Submersible motors 50/60 Hz - Burdick lit/MS6/L-MS6-PG-01 0310.pdf · Submersible motors 50/60 Hz...

GRUNDFOS PRODUCT GUIDE

MS6

Submersible motors50/60 Hz

MS6.book Page 1 Wednesday, March 17, 2010 4:46 PM

Contents

2

Mission

IntroductionGeneral 5Product variants 5

Features and benefitsFeatures and benefits 6

ApplicationsApplications 7

IdentificationIdentification 8Type key 8Nameplate 9Product number key 9Example 10

Product rangeProduct range 12Product range, North America 13

ConstructionConstruction 24Sectional drawing, MS6 up to 9.2 kW/12 hp 24Sectional drawing, MS6 11 kW/15 hp and above 25Exploded view, MS6 up to 9.2 kW/12 hp 26Exploded view, MS6 11 kW/15 hp and above 27Material specification 28Construction 29Sand slinger 31Strainer 31Filter 31Valve 31Radial bearings 31Motor liquid 32

ApprovalsApprovals 33Approvals in general terms 33MS6 approvals 33

Operating conditionsOperating conditions 34Pumped liquids 34Ambient pressure 34Positional requirements 34Cooling 34Calculation of flow velocity past the motor 34Flow sleeves 35Variable frequency drive operation 36Soft starter 37Direction of rotation 38Supply voltage 38Voltage and current unbalance 38Start/stop frequency per hour 38Service factor 38

InstallationInstallation 39Preparation 39Checking of liquid in motor 39Refilling of motor liquid 39Fitting the submersible drop cable 39Installation depth below water level 39Fitting the motor to the pump 39Lowering the motor 40Electrical connection 40Motor protection 41Required motor starter settings 41Lightning protection 41Electrical connection 42Fitting a Pt100/Pt1000 sensor 43

MaintenanceMaintenance and service 45Service 45

Fault findingFault finding 46Checking of motor and cable 47Winding resistance 47


3

Contents

AccessoriesAccessories 48Flow sleeve 48Pt100 48Booster support 48MP 204 49Cable termination kit, type KM 49Zinc anodes 49Motor cable program 50Lightning protection 50Cable clips 50

Dimensions and weights

Electrical dataElectrical data 53

CurvesCurves 56Description 56


MS6

4

Mission

- It is our mission - the basis of our existence - to successfully develop, produce and sell high-quality pumps and pumping systems world-wide, contributing to a better quality of life and a healthy environment

• One of the 3 largest pump companies in the world• The second largest manufacturer of submersible motors in the world• World headquarters in Denmark• North American headquarters in Kansas City - Manufacturing in Fresno, California• 80 companies in 45 countries• More than 16 million motors and pumps produced annually worldwide• North American companies operating in USA, Canada and Mexico• Continuous reinvestment in growth and development enables the company to

BE responsible, THINK ahead, and INNOVATE

Bjerringbro, Denmark

Fresno, California Olathe, Kansas

Monterrey, Mexico Allentown, Pennsylvania Oakville, Ontario


5

MS6Introduction

GeneralThe MS6 is a submersible motor designed to power submersible pumps.The MS6 can be fitted to all Grundfos SP pumps without the use of adapters.The MS6 is designed to fit pump ends manufactured according to NEMA standards. The standard product range includes 50 Hz and 60 Hz versions up to 30 kW.

Fig. 1 MS6 motors

The MS6 is available in a variety of models. Each model is designed to meet specific application requirements.General characteristics:• 6” diameter.• High efficiency. • Stator completely encapsulated in stainless steel.• The MS6 is cooled by the pumped liquid.• Hermetically sealed, canned motor with a dry stator.• Enclosure class IP 68 provided by the double shaft

seal.• Bearings lubricated by the motor liquid.• Pressure-equalizing system.• The MS6 is factory-filled with Grundfos motor liquid

SML-3. Type MS6RESDT30 is filled with demineralized water.

• Built-in temperature transmitter (Tempcon).• The motor temperature can be monitored via a Pt100

or Pt1000 sensor.• The MS6 is CE-marked.

Product variants The MS6 product range is divided into two:• a standard product range • an FPV product range (FPV products are customized

product variants).The standard product range is listed in Product range on page 12.All standard product numbers can be identified via the product number key, see Product number key on page 9.The product range is built up in a modular structure.

GrA

3996


MS6

6

Features and benefits

Features and benefitsThe MS6 product range includes motor types withfeatures such as:• Silicon-carbide-based (SiC/SiC) sealing system for

applications with sand or other abrasives.• Super stainless-steel version EN 1.4539 (AISI 904 L)

with silicon-carbide-based (SiC/SiC) sealing system and FKM rubber parts for applications in aggressive and slightly contaminated environment, possibly containing oils.

• Possibility of monitoring the motor temperature via a Pt100 or Pt1000 sensor in case of a defective Tempcon temperature transmitter, see Fitting a Pt100/Pt1000 sensor on page 43.

• Grundfos MP 204 motor protector available, seeMP 204 on page 49.


7

MS6Applications

ApplicationsGrundfos submersible motors are designed for a wide range of applications such as:• deep-well water supply • irrigation• groundwater regulation • pressure boosting • industrial water transfer and similar applications.The MS6 is available in a wide range of variants to suitdifferent kinds of applications.Recommended applications:• MS6T30 for operation in common groundwater.• MS6WT30 with tungsten-carbide/SiC bearings for

applications where horizontal operation is common and turbine operation may occur.

• MS6RESWT30 for operation in aggressive liquids with abrasive particles in applications where horizontal operation is common and turbine operation may occur.

• MS6EST30 for operation in neutral liquids with content of oil and dissolved gasses.

• MS6REST30 for operation in aggressive liquids with temperatures t < 86 °F (30 °C).

• MS6T60 for operation in common groundwater with temperatures t < 140 °F (60 °C).

• MS6REST60 for operation in aggressive liquids with temperatures t < 140 °F (60 °C).

• MS6RESWT60 for operation in aggressive liquids with temperatures t 140 °F (60 °C) and with abrasive particles in applications where horizontal operation is common and turbine operation may occur.

• MS6RESDT30 for applications where a high degree of process control is required, e.g. in chip manufacturing. The motor is factory-filled with demineralized water.


MS6

8

Identification

Identification

Type key-

Example MS 6 R E S W D T60

Type range(Motor Submersible)

Motor diameter in inches

Material• Blank = stainless steel EN 1.4301 (AISI 304)• R = stainless steel EN 1.4539 (AISI 904L)

Rubber parts• Blank = NBR• E = FKM

Shaft seal• Blank = ceramics/carbon• S = SiC/SiC

Radial bearings• Blank = carbon/stainless steel• W = SiC/tungsten carbide

Motor liquid• Blank = SML-3• D = demineralized water

Maximum liquid temperature• T30 = 86 °F (30 °C)• T60 = 140 °F (60 °C)


Identification MS6

9

NameplateThe nameplate marking follows the IEC 34-1 standard.

Fig. 2 MS6 nameplate

Product number keyThe product number key applies only to the numbers without packing (78XXXXXX).The product number consists of eight digits. Each digit applies to a specific characteristic of the motor.

Example:Product number 78195541, see Product number key on page 9:• 78: motor type: MS6• 19: supply voltage 3 x 380-415 V, 50 Hz• 55: version

– built-in Tempcon– stainless steel EN 1.4301 and NBR rubber– shaft seal: carbon/ceramics

• 41: output power: 5.5 kW, 7.5 hp.Note: 96XXXXXX product numbers are consecutive numbers which means that they do not comply with the product number key.

TM03

612

7 43

06

MS6REST30

MADE IN HUNGARY

Phase[-]3 500 50 18.5 1.00 2840

[V] [Hz] [kW] [hp] [-] [min ]Voltage Frequency SF n

No.78395647 SN: 10000001 PC P10715Model: AP2

max.

-1

3 525 50 18.5 1.00 28603 575 60 18.5 25 1.15

31.0[A]

Max. SF. C.

29.531.0

0.88[-]

Cos

0.860.88 3430

Weight: 64 kg/141lbDuty S1 Transmitter temp. pmax. 30 bar kVA code D IP 68 Ins.cl. F

417

18

2021

19

5

89

10

11

12

67

2223

3 1 1413 16152

USC

tLiquid 30°C at 0.15 m/s /86°F at 0.5 ft/s Connection D

P2

24

Pos. Description Pos. Description

1 Pump generation (A = first generation) 13 Service factor2 Output power in [kW] and [hp] 14 Serial number

3 Product number78XXXXXX: Product number without packing 15 Cos ϕ

4 Type designation 16 Production code

5 Number of phases 17 Rated speed in min-1

6 Supply voltage 18 Rated current7 Frequency of the voltage supply 19 Net weight in [kg] and [lb]8 Max. liquid temperature at min. flow past the motor 20 Enclosure class9 Motor designed for continuous operation 21 Insulation class10 Built-in Tempcon temperature transmitter 22 Country of origin11 CE-mark and various approvals 23 Motor windings coupled 12 Maximum operating pressure 24 Locked rotor kVA per hp


Identification MS6

10

ExampleExample 78 19 55 41

Motor type• 78 = MS6

Supply voltage• 09 = 3 x 200 V, 50 Hz / 3 x 200-220 V, 60 Hz• 10 = 3 x 220-230 V, 50 Hz• 19 = 3 x 380-400-415 V, 50 Hz• 60 = 3 x 220-230 V, 50 Hz, SD• 63 = 3 x 400 V, 50 Hz / 3 x 400-440 V, 60 Hz, SD• 64 = 3 x 400 V, 50 Hz / 3 x 400-440 V, 60 Hz, DOL/SD• 69 = 3 x 380-400-415 V, 50 Hz, SD• 28 = 3 x 208-230 V, 60 Hz• 33 = 3 x 380 V, 60 Hz• 35 = 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz• 39 = 3 x 500-525 V, 50 Hz / 3 x 575 V, 60 Hz• 80 = 3 x 208-230 V, 60 Hz, SD• 83 = 3 x 380 V, 60 Hz, SD

Standard versions45

- MS6T30, without Tempcon - Materials: EN 1.4301 and NBR rubber- Shaft seal: carbon/ceramics, radial bearing: carbon/steel

50- MS6WT30, with Tempcon - Materials: EN 1.4301 and NBR rubber- Shaft seal: carbon/ceramics, radial bearing: tungsten carbide/SiC

51- MS6RESWT30, with Tempcon - Materials: EN 1.4539 and FKM rubber- Shaft seal: SiC/SiC, radial bearing: tungsten carbide/SiC

52- MS6EST30, with Tempcon- Materials: EN 1.4301 and FKM rubber- Shaft seal: SiC/SiC, radial bearing: carbon/ceramics

55- MS6T30, with Tempcon - Materials: EN 1.4301 and NBR rubber- Shaft seal: carbon/ceramics, radial bearing: carbon/ceramics

56- MS6REST30, with Tempcon - Materials: EN 1.4539 and FKM rubber- Shaft seal: SiC/SiC, radial bearing: carbon/ceramics

58- MS6T60, with Tempcon - Materials: EN 1.4301 and NBR rubber- Shaft seal: carbon/ceramics, radial bearing: carbon/ceramics

59- MS6REST60, with Tempcon - Materials: EN 1.4539 and FKM rubber- Shaft seal: SiC/SiC, radial bearing: carbon/ceramics

61- MS6RESWT60, with Tempcon - Materials: EN 1.4539 and FKM rubber- Shaft seal: SiC/SiC, radial bearing: tungsten carbide/SiC

86- MS6RESDT30, with Tempcon - Materials: EN 1.4539 and FKM rubber, factory-filled with demineralized water- Shaft seal: SiC/SiC, radial bearing: carbon/ceramics


Identification MS6

11

Example 78 19 55 41

Output power• 39 = 3.7 kW, 5.0 hp• 40 = 4.0 kW, 5.5 hp• 41 = 5.5 kW, 7.5 hp • 42 = 7.5 kW, 10 hp• 43 = 9.2 kW, 12 hp• 44 = 11 kW, 15 hp• 45 = 13 kW, 18 hp• 46 = 15 kW, 20 hp• 47 = 18.5 kW, 25 hp• 48 = 22 kW, 30 hp• 49 = 26 kW, 35 hp• 50 = 30 kW, 40 hp


MS6

12

Product range

Product rangeNorth America product range is as follows:• 3 x 208-230 V, 60 Hz• 3 x 400 V, 50 Hz• 3 x 440-460 V, 60 Hz• 3 x 575 V, 60 Hz

– Especially for the Canadian market.

Product numbers of the standard product range are included. Other products are available; contact Grundfos.This product range section contains information about:• supply voltage• power, P2• starting method, DOL (direct-on-line starting) or SD

(star-delta starting)• product number.


Product range MS6

13

North America

Note: All motors in packing are including cable.

Symbol Description

Motors for DOL/SD starting

Motors for DOL starting only

Motors for SD starting only

– Not in the standard program

Supply voltage Frequency Motor type

Output power P2

3.7

kW /

5 hp

4 kW

/ 5.

5 hp

5.5

kW /

7.5

hp

7.5

kW /

10 h

p

9.2

kW /

12 h

p

11 k

W /

15 h

p

13 k

W /

18 h

p

15 k

W /

20 h

p

18.5

kW

/ 25

hp

22 k

W /

30 h

p

26 k

W /

35 h

p

30 k

W /

40 h

p

3 x 208-230 V 60 Hz

MS6T30 -MS6WT30 - - - - - - - - - - - -MS6T30 -

MS6EST30 - - -MS6RESWT30 - - - - - - - - - - - -MS6REST30 -

MS6T60 - - - - - - - - - - - -MS6REST60 - - - - - - - - - - - -

MS6RESWT60 - - - - - - - - - - - -MS6RESDT30 - - - - - - - - - - - -

3 x 400 V3 x 440-460 V 60 Hz

MS6T30 -MS6WT30 -MS6T30 -

MS6EST30 -MS6RESWT30 -MS6REST30 -

MS6T60 - - - - - - - - - - - -MS6REST60 - - - - - - - - - - - -

MS6RESWT60 - - - - - - - - - - - -MS6RESDT30 -

3 x 500-525 V*3 x 575 V

50 Hz60 Hz

MS6T30 -MS6WT30 - - - - - - - - - - - -MS6T30 -

MS6EST30 - - - - - - - - - - - -MS6RESWT30 - - - - - - - - - - - -MS6REST30 -

MS6T60 - - - - - - - - - - - -MS6REST60 - - - - - - - - - - - -

MS6RESWT60 - - - - - - - - - - - -MS6RESDT30 - - - - - - - - - - - -

.


Product range MS6

14

Product range, North AmericaThis product range is divided into the following:

Motors without Tempcon temperature transmitter

MS6T30• 3 x 208-230 V, 60 Hz• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz• 3 x 500-525 V, 50 Hz / 3 x 575 V, 60 Hz

Motors with Tempcon temperature transmitter

MS6T30• 3 x 208-230 V, 60 Hz• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz• 3 x 500-525 V, 50 Hz / 3 x 575 V, 60 Hz

MS6WT30• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz

MS6REST30• 3 x 208-230 V, 60 Hz• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz• 3 x 500-525 V, 50 Hz / 3 x 575 V, 60 Hz• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz

MS6EST30• 3 x 208-230 V, 60 Hz• 3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz

Service factorService factor for the 60 Hz motors in this section:SF = 1.15.


Product range MS6

15

MS6T30

3 x 208-230 V, 60 Hz

Motor typePower P2

Starting method Tempcon Product number[kW] [hp]

MS6T30

3.7 5DOL

No

78284539SD 78804539

5.5 7.5DOL 78284541SD 78804541

7.5 10DOL 78284542SD 78804542

9.2 12DOL 78284543SD 78804543

11 15DOL 78284544SD 78804544

13 18DOL 78284545SD 78804545

15 20DOL 78284546SD 78804546

18.5 25DOL 78284547SD 78804547

22 30DOL 78284548SD 78804548

26 35 SD 7880454930 40 SD 78804550

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2


MS6T30

3.7 5 DOL

No

783545395.5 7.5 DOL 783545417.5 10 DOL 783545429.2 12 DOL 7835454311 15 DOL 7835454413 18 DOL 7835454515 20 DOL 78354546

18.5 25 DOL 7835454722 30 DOL 7835454826 35 DOL 7835454930 40 DOL 78354550


Product range MS6

16

(3 x 500-525 V, 50 Hz)*3 x 575 V, 60 Hz

Motor typePower P2


MS6T30

3.7 5 DOL

No


18.5 25 DOL 7839454722 30 DOL 7839454826 35 DOL 7839454930 40 DOL 78394550


Product range MS6

17

MS6T30

3 x 208-230 V, 60 Hz

Motor typePower P2

Starting method TempconProduct number

[kW] [hp] Excl. packing Incl. packing

MS6T30

3.7 5DOL

Yes

78285539 96168842SD 78805539

5.5 7.5DOL 78285541 96168843SD 78805541

7.5 10DOL 78285542 96168844SD 78805542

9.2 12DOL 78285543 96168845SD 78805543

11 15DOL 78285544 96168846SD 78805544

13 18DOL 78285545 96168847SD 78805545

15 20DOL 78285546 96168848SD 78805546

18.5 25DOL 78285547 96168849SD 78805547

22 30DOL 78285548 96168850SD 78805548

26 35 SD 7880554930 40 SD 78805550

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2



MS6T30

3.7 5 DOL

Yes

78355539 961688225.5 7.5 DOL 78355541 961688237.5 10 DOL 78355542 961688249.2 12 DOL 78355543 9616882511 15 DOL 78355544 9616882613 18 DOL 78355545 9616882715 20 DOL 78355546 96168828

18.5 25 DOL 78355547 9616882922 30 DOL 78355548 9616883026 35 DOL 78355549 9616883130 40 DOL 78355550 96168832


Product range MS6

18

(3 x 500-525 V, 50 Hz)*3 x 575 V, 60 Hz

Motor typePower P2



MS6T30

3.7 5 DOL

Yes


18.5 25 DOL 78395547 9616880922 30 DOL 78395548 9616881026 35 DOL 78395549 9616881130 40 DOL 78395550 96168812


Product range MS6

19

MS6WT30

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2


MS6WT30

3.7 5 DOL

Yes


18.5 25 DOL 7835504722 30 DOL 7835504826 35 DOL 7835504930 40 DOL 78355050


Product range MS6

20

MS6REST30

3 x 208-230 V, 60 Hz

Motor typePower P2



MS6REST30

3.7 5DOL

Yes

78285639 96305402SD 78805639

5.5 7.5DOL 78285641 96305403SD 78805641

7.5 10DOL 78285642 96305404SD 78805642

9.2 12DOL 78285643 96305405SD 78805643

11 15DOL 78285644 96305406SD 78805644

13 18DOL 78285645 96305407SD 78805645

15 20DOL 78285646 96305408SD 78805646

18.5 25DOL 78285647 96305409SD 78805647

22 30DOL 78285648 96305410SD 78805648

26 35 SD 7880564930 40 SD 78805650

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2


MS6REST30

3.7 5 DOL

Yes


18.5 25 DOL 7835564722 30 DOL 7835564826 35 DOL 7835564930 40 DOL 78355650


Product range MS6

21

(3 x 500-525 V, 50 Hz)*3 x 575 V, 60 Hz

Motor typePower P2


MS6REST30

3.7 5 DOL

Yes


18.5 25 DOL 7839564722 30 DOL 7839564826 35 DOL 7839564930 40 DOL 78395650


Product range MS6

22

MS6RESDT30

MS6RESWT30

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2


MS6RESDT30

3.7 5 DOL

Yes


18.5 25 DOL 7835864722 30 DOL 7835864826 35 DOL 7835864930 40 DOL 78358650

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2


MS6RESWT30

3.7 5 DOL

Yes


18.5 25 DOL 7835514722 30 DOL 7835514826 35 DOL 7835514930 40 DOL 78355150


Product range MS6

23

MS6EST30

3 x 208-230 V, 60 Hz

Motor typePower P2



MS6EST30

3.7 5 DOL

Yes


18.5 25 DOL 78285247 9616878922 30 DOL 78285248 96168790

3 x 400 V, 50 Hz3 x 440-460 V, 60 Hz

Motor typePower P2



MS6EST30

3.7 5 DOL

Yes


18.5 25 DOL 78355247 9616876922 30 DOL 78355248 9616877026 35 DOL 78355249 9616877130 40 DOL 78355250 96168772


MS6

24

Construction

ConstructionThe MS6 is a 2-pole, asynchronous, squirrel-cagesubmersible motor.

The motor is a hermetically sealed, canned motor with a dry stator and bearings lubricated by the motor liquid.

• Enclosure class: IP 68• Insulation class: F.

Sectional drawing, MS6 up to 9.2 kW/12 hp

Fig. 3 MS6 up to 9.2 kW/12 hp, position numbers refer to Material specification on page 28.

TM03

615

4 43

06


Construction MS6

25

Sectional drawing, MS6 11 kW/15 hp and above

Fig. 4 MS6 11 kW/15 hp and above, position numbers refer to Material specification on page 28.

TM03

615

3 43

06


Construction MS6

26

Exploded view, MS6 up to 9.2 kW/12 hp

Fig. 5 MS6 up to 9.2 kW/12 hp, position numbers refer to Material specification on page 28.

TM03

615

5 43

06


Construction MS6

27

0.1 Exploded view, MS6 11 kW/15 hp and above

Fig. 6 MS6 11 kW/15 hp and above, position numbers refer to Material specification on page 28.

TM03

618

8 44

06


Construction MS6

28

Material specification

Pos. Component Description

Material

MS6T30MS6WT30MS6T60

MS6EST30

MS6REST30MS6RESWT30MS6REST60

MS6RESWT60MS6RESDT30

201 Stator, complete Sleeve: Stainless steel Flange: Cast stainless steel

EN 1.4301EN 1.4308

EN 1.4301EN 1.4308

EN 1.4539EN 1.4517

202 Shaft with rotor Stainless steelBearing bush*

EN 1.4462EN 1.4462

EN 1.4462EN 1.4462

EN 1.4462EN 1.4462

203 Thrust bearing, stationary Cast stainless steel EN 1.4125 EN 1.4125 EN 1.4125

205 Bearing retainer, upper Cast stainless steelBearing**

EN 1.4016Graphite

EN 1.4016Graphite

EN 1.4016Graphite

206 Thrust ring, rotating Graphite Graphite Graphite207 Strainer Stainless steel EN 1.4310 EN 1.4310 EN 1.4310

207a Filter Sintered stainless steel Hastelloy, C-22 Hastelloy, C-22 Hastelloy, C-22208 Thrust ring support Cast stainless steel EN 1.4016 EN 1.4016 EN 1.4016209 Turbular pin Stainless steel EN 1.4310 EN 1.4310 EN 1.4310210 Thrust bearing support Cast stainless steel EN 1.4016 EN 1.4016 EN 1.4016212 Diaphragm Rubber NBR FKM FKM213 End cover Cast stainless steel EN 1.4308 EN 1.4308 EN 1.4517215 Screw Stainless steel A2 A2 A2216 Washer Stainless steel EN 1.4301 EN 1.4301 EN 1.4301

216b Nut Stainless steel A2 A2 A2217 Spring retainer Stainless steel EN 1.4539 EN 1.4539 EN 1.4539218 Spring Stainless steel EN 1.4462 EN 1.4462 EN 1.4462219 Thrust bearing housing Cast stainless steel EN 1.4308 EN 1.4308 EN 1.4517

220 Motor cable

Flat cableSingle leadsSleeve: stainless steelCast stainless steelRubber part

EPDMXLPE

EN 1.4462EN 1.4517

FKM

EPDMXLPE

EN 1.4462EN 1.4517

FKM

EPDMXLPE

EN 1.4462EN 1.4517

FKM220a O-ring Rubber FKM FKM FKM222 Valve Stainless steel/rubber EN 1.4462/FKM EN 1.4462/FKM EN 1.4462/FKM

222b O-ring Rubber NBR FKM FKM224 O-ring Rubber NBR FKM FKM226 Shaft seal housing Cast stainless steel EN 1.4308 EN 1.4308 EN 1.4517

226a Shaft seal, stationary Ceramics SiC SiC226b Shaft seal, rotating Carbon SiC SiC

229 Sand slinger Stainless steelRubber

EN 1.4539FKM

EN 1.4539FKM

EN 1.4539FKM

231 O-ring NBR FKM FKM

232 Lip seal Stainless steelRubber

EN 1.4401FKM

EN 1.4401FKM

EN 1.4401FKM

236 Bearing retainer, lower Cast stainless steelBearing**

EN 1.4016Graphite

EN 1.4016Graphite

EN 1.4016Graphite

236a Screw Stainless steel A2 A2 A2242 Upthrust spacer Composite PP PP PP248 Screw Stainless steel 1.4539 1.4539 1.4539

Motor liquid SML-3 SML-3 SML-3***

* The motors are available with tungsten-carbide bearings, see Product number key on page 9.** SiC if the motor has tungsten-carbide bearings, see Product number key on page 9.*** MS6RESDT60 motors are factory-filled with demineralised water, see Product number key on page 9.


Construction MS6

29

Construction Position numbers in drawings in this section refer to Material specification on page 28.

Motor topThe MS6 submersible motors are designed to fit pump ends manufactured according to NEMA standards, which define their physical dimensions, electricalratings, and thrust ratings.

StatorThe stators for the MS6 are tailored to North America.

The stators have been specially designed for theoperating conditions in North America.

• North America versions are specially designed to handle 60 Hz power supply including service factor load (SF = 1.15). Winding and liquid temperatures are observed for reliability at 10 % unbalanced power supply at 10 % overvoltage with maximum pump size. The ability of each motor to survive phase drop and locked-rotor conditions on theaverage American motor protection is verified.

Motors designed for high temperatures (T60)Operating temperatures up to 60 °C increase the need for cooling. This is the reason why these motors (T60) are physically longer than the T30 motors. Further-more, there are increased demands on the flow past the T60 motors, see Cooling on page 34.

At full load, the winding temperature rise is 50-60 °F (10-20 °C) lower compared to a standard MS6 motor, depending on the motor size.

RotorFor stability reasons, the MS6 is kept as short aspossible. Stability is also considered in the balance between efficiency and shaft size and by the position of bearings.

DiaphragmThe purpose of the diaphragm is to compensate for pressure and volume variations. It does so bycontinuously compensating for volume variations due to temperature.

The change of volume is known to cause sedimentbuild-up in the end cover over time which mayeventually block the movement of the diaphragm.

To prevent sediment build-up, the vent hole of thediaphragm casing is provided with a super stainless-steel filter.

To prevent the up to 3.28 ft (1 meter) high liquid column in the motor from pressing the diaphragm outwards, thediaphragm is supported by a spring. The spring load prevents dry running of shaft seals and top bearings when the position of an "underfilled" motor is changed from horizontal to vertical.

Contrary to the rubber, the spring remains constant thus making the diaphragm system more stable when the motor temperature changes.

Shaft sealThe quality of the shaft seal is vital to ensure long and trouble-free operation of a submersible motor.

Fig. 7 Shaft seal, position numbers refer to Material specification on page 28.

As a unique feature, any MS6 incorporates a double shaft seal. The double shaft seal consists of• a rubber lip seal and• a mechanical seal.The rubber lip seal supports the primary mechanical seal as the first barrier protecting against large abrasive particles and deposits. This function is particularly important when the motor is installed in a newlydeveloped water well.

The primary mechanical seal prevents exchange of the motor liquid on long term.

The seal faces of the mechanical seal are made of either carbon/ceramic for multiple purposes or silicon carbide (SiC/SiC) for use in abrasive environment.

The double shaft seal enables IP 68 rating for all MS6 models.

Thrust bearingsThe sliding materials in the thrust bearings are carbon and steel.

TM03

781

1 49

06


Construction MS6

30

Fig. 8 Thrust bearing, up to 9.2 kW/12 hp, positionnumbers refer to Material specification onpage 28.

Fig. 9 Thrust bearing, 11 kW/15 hp and above, position numbers refer to Material specification onpage 28.

The rotating partTo prolong the bearing life, the rotating part with a larger surface is made of soft carbon material. Thecarbon disk is polished for optimum surface finish.

The stationary partThe stationary part is made of tempered stainless steel. This segmented component is cast as a one-in-all cost-effective unit. By design, each pad becomes flexible as required for good functionality.

The segmented surface is finally polished to a specially designed shape.

Rubber parts (seals and diaphragm)Materials: Both NBR and FKM rubber parts are used.

TM03

781

2 49

06

TM03

781

3 49

06


Construction MS6

31

Rubber parts/material:

• NBR is used for diaphragm, O-rings. • FKM is used for

– lip seals for friction and wear reasons.– lead plugs for standardization reasons.

• FKM rubber is standard in MS6 motors for operation in liquids with oil content and/or high temperatures. Motor types featuring exclusively FKM rubber:

• MS6EST30• MS6REST30• MS6RESWT30• MS6REST60• MS6RESWT60• MS6RESDT30.

Sand slingerThe sand slinger protects the lip seal, shaft seal, shaft end and coupling from erosion caused by sand and other deposits.

Fig. 10 Sand slinger, position number refers to Material specification on page 28.

StrainerThe strainer prevents the diaphragm from getting into contact with the rotating parts.

Fig. 11 Strainer, position number refers to Material speci-fication on page 28.

FilterThe sintered stainless-steel filter in the vent hole of the diaphragm casing prevents sediment build-up.

Fig. 12 Filter, position number refers to Material specifi-cation on page 28.

ValveThe valve equalises the pressure and facilitates re-fill-ing of motor liquid.

Fig. 13 Valve, position number refers to Material specifi-cation on page 28.

The valve equalizes the pressures in cases where the diaphragm is in an extreme position and cannotcompensate for varying pressures.

Radial bearingsThe radial bearings absorb radial forces and keep the shaft in line.

Fig. 14 Radial bearings, position numbers refer to Material specification on page 28.

The bearing and support are designed for low shaft deflection to prevent wear on the spline and shaft end.

W-motors (see Type key on page 8) have radialbearings made of tungsten carbide to enable operation in rough environment without reducing the motor life.

TM03

781

4 49

06TM

03 7

815

4906

TM

03 8

412

1407

TM03

841

1 14

07TM

03 7

816

4906


Construction MS6

32

Motor liquidThe motor is factory-filled with Grundfos motor liquid SML-3.

Frost-proof down to –4 ° F (–20 °C).

Specification of SML-3

Corrosion protectionGrundfos motor liquid protects metals and alloys inthe equipment against all forms of corrosion. Thecombination of low toxicity and FDA-approvedingredients with a high level of corrosion protection makes Grundfos motor liquid unique in the market.

The anti-corrosion performance is demonstrated according to ASTM D 1384.

Compatibility and mixabilityGrundfos motor liquid is compatible with most other heat transfer fluids based on mono-propylene glycol. Grundfos motor liquid should only be mixed with clean water. The product can be delivered as a dilution mixed with the proper amount of purified water.

Toxicity and safetyGrundfos motor liquid consists of FDA-approvedcomponents for heat transfer fluids with incidental food contact.

Exception: MS6RESDT30 motors are factory-filled with demineralized water.


33

MS6Approvals

Approvals

Approvals in general termsAn approval should not be mistaken for a standard.

A standard is a stipulation/recommendation according to which a motor has been developed and tested. Whether a product fulfills the stipulations/recommendations of a standard can be tested by an independent third body, such as UL or CSA.

Approvals are required all over the world for a number of different reasons.

Typically customers require approvals to be sure that safety regulations, choice of materials, temperature rise, etc. have been met according to a specificstandard.

An unloaded motor (in Grundfos, the load wouldtypically be a pump) is regarded as a component which is the reason why the motor will normally "only" be approved as a component. The user will then have to secure a system approval afterwards. But this process will of course be made much easier if the motor has received a component approval from a recognizedvalidating body such as UL, CSA or others.

MS6 approvalsStatus of MS6 approvals:

Approval Description Status

cCSAus

Approval by the Canadian Standards Association. This approval means that the MS6 is a recognized electrical component for the 60 Hz market, SF > 1.The "C" and "US" indicators adjacent to the CSA mark signify that theproduct has been evaluated to the applicable CSA and ANSI/UL standards for use in Canada and the U.S., respectively.

Pending

NSF61 North American approval for drinking water Will be applied for at a later stage


MS6

34

Operating conditions

Operating conditions

Pumped liquidsThe MS6 motors are available in several versions for use in various liquids.

The MS6 motors are designed for use in common groundwater applications, see Applications.

In case of doubt, please make an analysis of the liquid and contact Grundfos.

Sand content

Maximum permissible sand content in the liquid: 50 ppm.

Ambient pressureMaximum 60 bar ~ 6.0 MPa.

It is generally not recommendable to use the motor for operation in a vacuum.

If this cannot be avoided, please contact Grundfos.

Positional requirementsThe motor can be installed either vertically orhorizontally.

Fig. 16 Positional requirements

Note: During operation, the motor must always becompletely submerged in the liquid.Please consult the pump manufacturer's NPSH data.

CoolingThe maximum liquid temperature and the minimumliquid velocity past the motor appear from the table below.

It is recommended to install the motor above the well screen in order to achieve proper motor cooling.

In cases where the stated liquid velocity cannot be achieved, a flow sleeve must be installed.

If there is a risk of sediment build-up, such as sand around the motor, a flow sleeve should be used to ensure proper cooling of the motor.

Operation with MS6 T30 versions is possible at a liquid temperature above 86 °F (30 °C). In general, however, this will shorten the life of the installation. It isimpossible to say by how much, as this depends on a number of other parameters, e.g. voltage supply, aggressiveness and sand content of the water, motor cooling conditions, etc.

Calculation of flow velocity past the motorThe motor must always be installed above the well screen. If a flow sleeve is used, the motor can be placed in the screen.

Calculation of flow velocity

Legend:v = flow velocity past the motor [m/s]Q = rated flow [m/h]353 = constantDborehole = internal borehole diameter [mm]Dmotor = outer motor diameter [mm].

Example:Water temperature = 40 °CQ = 40 m3/hDmotor = 138 mm (6”)Dborehole = 203 mm (8”)

Calculation of the flow velocity past the motor:

v = 0.64 [m/s]

TM00

135

5 50

92

Allowed

Not allowed

MotorInstallation

Flow pastthe motor Vertical Horizontal

MS6(T30 versions)

0.15 m/s(0.5 ft/s)

30 °C*(~86 °F)

30 °C*(~86 °F)

MS6(T60 versions)

1 m/s(3.3 ft/s)

60 °C(~140 °F)

60 °C(~140 °F)

v Q 353×

Dborehole2 Dmotor

2–

---------------------------------------------------------------- m s⁄[ ]=

v 40 353×

2032 1382–

--------------------------------- m s⁄[ ]=


Operating conditions MS6

35

Flow sleevesAt cooling water temperatures above maximumfull-load temperature, the motor must be derated.This means that an oversize motor is to be used.Furthermore, the cooling water flow rate of 0.15 m/s must be ensured, e.g. by fitting a standard Grundfos flow sleeve.

The flow sleeve is fitted to the submersible motor so that the liquid passes close by the motor on its way towards the pump suction interconnector thus ensuring optimum cooling of the motor, see fig. 17.

Fig. 17 Flow sleeve function

The flow sleeve is designed so that the flow velocity past the motor is minimum 0.5 m/s and maximum3 m/s to ensure optimum pump operating conditions.

Use this formula to calculate the flow velocity:

Legend:

v = flow velocity past the motor [m/s]

Q = rated flow [m/h]

353= constant

D = internal flow sleeve diameter [mm]

d = outer motor diameter [mm].

Due to the special-design flow-through spacing ring, see PI-058 fig. 6, pos. 2, to be fitted around the bottom of the motor, cooling is achieved already from the thrust bearing of the motor and up.

As already mentioned, the flow sleeve can be used for both vertical and horizontal installation (for horizontal installation supporting brackets are required).

Sleeve coolingApart from warranty considerations, there are four important arguments for installing a flow sleeve.

1. The quality of the pumped liquidIf the pumped liquid contains much iron (plus many iron bacteria), manganese and lime, thesesubstances will be oxidized and deposited on the motor surface, which is approx. 40 to 60 °F(5-15 °C) warmer than the influx water. This build-up of a heat insulating layer may result in hot spots in the motor winding insulation. This temperature in-crease may reduce the insulating ability and conse-quently the motor life.

2. The aggressiveness of the pumped liquidIf the groundwater is aggressive or containschloride, the corrosion rate will double for every59 °F (15 °C) increase in temperature of steel andwater. A flow sleeve will therefore reduce the risk of motor corrosion.

3. Oxidation of the pumped liquidAt the top of the well, there will be oxidized rawwater. If this oxidized water reaches the well screen, deposits may result in a reduction of the flow through the screen over time. This will reduce the efficiency and consequently the capacity of the well.

A warm submersible motor without flow sleeve will heat up the surrounding water when switched off. The thermal effect will make the heated water move towards the top of the well. At the same time,oxidized water will move towards the screen setting.

When using a flow sleeve, the motor will run at a lower temperature and when the motor stops, the flow sleeve will absorb the residual heat from the motor and consequently prevent water from moving upwards because of the thermal effect and oxidated water from moving downwards. This will contribute to longer periods between well scalings.

4. Horizontal operationIt is recommended always to use flow sleeves in horizontal installations to ensure proper motorcooling. Local heating caused by sunlight on the motor is often found in fountain applications. A flow sleeve will also minimize the risk of vortexes.For these applications, the risk of local heating should be considered, particularly in connection with horizontal installations and where several pumps are installed next to each other. In such cases, flow sleeves should always be used.

TM01

050

9 12

97

v Q 353×

D2 d2–

-------------------- m s⁄[ ]=



36

Fig. 18 MS6 nameplate

Variable frequency drive operationGrundfos MS6 motors can be connected to a variable frequency drive (VFD).

Generally, the motor must be protected againstoverload through setting of the current limiter of thevariable frequency drive to the same value as the rated current or the maximum actual current of thesubmersible motor.

Note: Operation of an MS6 motor via a variablefrequency drive will cause a fuse in the temperature transmitter to melt which will make temperaturemonitoring of the motor via the temperature transmitter and MP 204 impossible.

The fuse cannot be replaced!

Note: To enable monitoring of the motor temperature, Grundfos recommends you to install a Pt100 or Pt1000 sensor together with a PR 5714 relay.

If the motor is repaired or reconditioned at a later stage, the nameplate must therefore reflect the fact that the temperature transmitter is not functioning, see fig. 18.

The rated frequency must not be exceeded. Permissible frequency ranges: 30-50 Hz and 30-60 Hz.

A reduction of the frequency will often result in an increased generation of heat in the motor even if the motor load is reduced. The reason is that the reduction of the power input will only be very small as the major part of the power input of a submersible motor isconsumed to overcome the static head.

Besides, the flow past the motor will be reduced, i.e. the cooling will be poor. It is therefore important never to adjust the frequency (and thus the pump speed and the flow) to a lower level, as there must still be a sufficient flow of pumped liquid past the motor. The minimumpermissible flow is 10 % of rated flow. The motor must still cut out immediately if the pump stops pumping water.

Ramp times: Maximum 3 seconds for start and stop.

Depending on the type, the variable frequency drive may cause increased acoustic noise from the motor. Furthermore, it may expose the motor to detrimental voltage peaks. This can be abated by installing an LC filter between the variable frequency drive and the motor.

For further details, please contact your variablefrequency supplier or Grundfos.

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560

9 39

06

MS6REST30

MADE IN HUNGARY

Phase[-]3 380 50 30 1.00 2840

[V] [Hz] [kW] [hp] [-] [min ]Voltage Frequency SF n

No.78195650 SN: 10000001 PC P20639Model: AP2

max.

-1

3 400 50 30 1.00 28703 415 50 30 1.00

67.0[A]

Max. SF. C.

65.065.5

0.88[-]

Cos

0.840.80 2880

Weight: 78 kg/ lbDuty S1 Transmitter temp. pmax. 60 bar IP 68 Ins.cl. F

USC

tLiquid 30°C at 0.15 m/s / °F at 0.5 ft/s Connection D

P2



37

Soft starterGrundfos only recommends the use of soft starters which control the voltage on all three phases and which are provided with a bypass switch.

Ramp times:

• Run-up time (until the voltage stated on thenameplate is reached): 3 seconds.

• Run-out time: 3 seconds.If the above run-up and run-out times are followed, unnecessary heating of the motor is avoided.

Soft starter with bypass switch: Soft starters with bypass switch will only be in operation during run-up and run-out. This reduces both the load on the soft starter and the energy consumption in comparison with operation without bypass switch.

The soft starter must not be used in connection with operation via a generator.

Fig. 19 Soft starter

The starting voltage is minimum 55 % of the value stated on the nameplate.

If a high locked-rotor torque is required or if the electricity supply is not optimal, the starting voltage should be higher.For further details, please contact your soft starter supplier or Grundfos.

TM00

568

9 13

95

100%

55%

0

Operation

Stop

[V]

Start

3 s 3 sTime [s]



38

Direction of rotationWhen the MS6 is fitted to a Grundfos SP or SPAsubmersible pump, the correct direction of rotation is counter-clockwise as seen from the shaft end.

Note: If the motor is started without being connected to a pump, the shaft end must be shielded.

Supply voltageThe supply voltage must comply with the following: Example: Voltage-range motors:3 x 380-400-415 V, 50 Hz, tolerances must be within– 10 %/+ 6 %.Example: Motors for supply voltages without a range: 3 x 380 V, 60 Hz, tolerances must be within– 10 %/+ 10 %.

Voltage and current unbalanceThe voltage and current unbalance between the phases must be within the limits below:

• Maximum voltage unbalance: 2 %• Maximum current unbalance: 5 %.

Start/stop frequency per hourThe MS6 is designed for continuous as well asintermittent operation.

Frequency of starts and stopsMin. number of starts: 1 per year is recommended.Max. number of starts: 30 per hour/300 per day.

Note: The maximum number of starts applies only to the motor. The maximum number of starts may belimited by the pump design. To ensure sufficient cooling and lubrication of the shaft seal, the motor must be completely submerged in the pumped liquid during operation.

The MS6 can be installed either horizontally orvertically. When installed horizontally, the shaft end must not fall below the horizontal level. The use of a flow sleeve is always recommended when the motor is installed horisontally.

Most of the MS6 motors have a built-in temperature transmitter for monitoring of motor temperature via the MP 204, see Product number key on page 9.

Service factorThe service factor (SF) allows the motor to provide power under optimum conditions at the nameplate rated power P2 times the SF. At rated conditions (i.e. 100 hp motor with a SF of 1.15 is designed to provide 115 hp under continuous load).

Grundfos recommends that motor loading does not exceed 100 % of the horsepower rating stated on the nameplate.

Consider the SF a contingency against overloading as a result of low voltage, current unbalance and/or adverse ambient conditions.


39

MS6Installation

InstallationInstallation must comply with local regulations and accepted codes of good practice.

Preparation• Before installation, check that the motor is intact.• check that the motor cable is undamaged.• check that the nameplate data correspond to order

data.• check the motor liquid level.

Checking of liquid in motorThe MS6 motors are factory-filled with a specialnon-poisonous Grundfos motor liquid, typeSML-2 or SML-3. The liquid is frost-proof down to–4 °F (–20 °C). Exception: MS6RESDT60 motors are factory-filled with demineralized water, see Demineralized water on page 39.

Note: The level of the liquid in the motor must be checked and the motor must be refilled, if required. Use clean water.

Note: If frost protection is required, special Grundfos liquid, type SML-2 or SML-3, must be used to refill the motor. Otherwise clean water may be used for refilling (however, never use distilled water).

Refilling of liquid, see Refilling of motor liquid on page 39.

DefinitionClean water means tap water that fulfills the European Community Council Directive on the Quality of Water Intended for Human Consumption, 98/83/EC,November 3, 1998, Annex I, Part B.

Demineralized waterMS6RESDT60 motors, which are filled with demineralized water, must be stored in a frost-free location.

Frost protectionIf the motor has to be stored after use, it must be stored in a frost-free location, or it must be ensured that the motor liquid is frost-proof.

Refilling of motor liquidIf the motor is delivered from stock, the liquid level must be checked before the motor is installed, see fig. 20.

In the case of service, the liquid level must be checked, see fig. 20.

Filling procedureThe filling hole for motor liquid is placed at the top of the motor.

1. Position the motor as shown in fig. 20.The filling screw must be at the highest point of the motor.

2. Remove the screw from the filling hole. 3. Inject liquid into the motor with the filling syringe,

fig. 20, until the liquid runs back out of the filling hole.

4. Replace the screw in the filling hole and tightensecurely before changing the position of the motor.

Torque: 3.0 Nm.

The motor is now ready for installation.

Fig. 20 Motor position during filling

Fitting the submersible drop cableBefore fitting the submersible drop cable to the motor, make sure that the cable socket is clean and dry.To facilitate the fitting of the cable, lubricate the rubber parts of the cable plug with non-conducting silicone paste.Tighten the screws holding the cable to 5.5 Nm.

Installation depth below water levelMaximum 984 ft (300 m).Exception: MS6 motors with tungsten-carbide bearings: 1968 ft (600 m). These motors are mainly used for booster applications.

Fitting the motor to the pumpFit the motor to the pump as follows:1. Use pipe clamps when handling the motor.2. Place the motor in vertical position at the borehole

seal, see fig. 21.

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07

45°


Installation MS6

40

Fig. 21 Motor in vertical position

3. Lift the pump part by means of pipe clamps fitted to the extension pipe, see fig. 13.

Fig. 22 Lifting the pump into position

4. Place the pump part on top of the motor.5. Fit and tighten the nuts, see the table below.Note: Make sure that the coupling between the pump and motor engages properly.

When fitting the motor to the pump part, the nuts must be tightened diagonally to the torque stated in the table below:

Note: Make sure that the pump chambers are aligned when assembly has been completed.

Lowering the motorIt is recommended to check the borehole by means of an inside calliper before lowering the motor to ensure unobstructed passage.Lower the motor carefully into the borehole, taking care not to damage the motor cable and the submersible drop cable.Note: Do not lower or lift the motor by means of the motor cable.

Electrical connectionThe electrical connection should be carried out by an authorized electrician in accordance with local regulations.

The supply voltage, rated maximum current and cos ϕ appear from the loose data plate that must be fitted close to the installation site.

The required voltage quality for MS6 submersible motors, measured at the motor terminals, is – 10 %/+ 6 % of the rated voltage during continuous operation (including variation in the supply voltage and losses in cables).

Furthermore, it must be checked that there is voltage symmetry in the electricity supply lines, i.e. samedifference of voltage between the individual phases. See also Checking of motor and cable on page 47,point 2.

Note: The motor must be earthed.

Note: The motor must be connected to an external mains switch with a minimum contact gap of.118 inches (3 mm) in all poles.

If MS6 motors with a built-in temperature transmitter (Tempcon) are not installed together with an MP 204 or similar Grundfos motor protection, they must be connected to a 0.47 μF capacitor approved for phase-phase operation (IEC 384-14) to meet the EC EMC directive (2004/108/EC). The capacitor must be connected to the two phases to which the temperature transmitter is connected; see fig. 23.

TM00

525

9 24

02TM

02 5

263

2502

Pump/motorstaybolt diameter

Torque[Nm]

1/2 UNF 50


Installation MS6

41

Fig. 23 Connection of capacitor

The motors are wound for direct-on-line starting orstar-delta starting and the starting current is between4 and 6 times the rated current of the motor.The run-up time of the motor is only about 0.1 second. Direct-on-line starting is therefore normally approved by the electricity supply authorities.

Motor protectionMS6 motors are available with or without a built-intemperature transmitter.

Motors with a built-in and operational temperature transmitter must be protected by

• a motor starter with thermal relay or• an MP 204 and contactor(s).Note: MP204 not for 575 V use.

Motors without or with a non-operational temperature transmitter must be protected by

• a motor starter with thermal relay or• an MP 204 and contactor(s).A Pt100 sensor is available as an accessory, see Pt100 on page 48.

Motors with a Pt100 sensor must be protected by

• a motor starter with thermal relay or• an MP 204 and contactor(s).Motors without a Pt100 sensor must be protected by• a motor starter with thermal relay or• an MP 204 and contactor(s).

Required motor starter settingsFor cold motors, the tripping time for the motor starter must be less than 10 seconds at 5 times the ratedmaximum current of the motor.

Note: If this requirement is not met, the motor warranty will be invalidated.

To ensure optimum protection of the submersible motor, the starter overload unit should be set inaccordance with the following guidelines:

1. Set the starter overload to the rated maximumcurrent of the motor.

2. Start the motor and let it run for half an hour atnormal performance.

3. Slowly grade down the scale indicator until themotor trip point is reached.

4. Increase the overload setting by 5 %.The highest permissible setting is the rated maximum current of the motor.

For motors wound for star-delta starting, the starter overload unit should be set as above, but the maximum setting should be as follows:

• Starter overload setting= Rated maximum current x 0.58.

The longest permissible start-up time for star-delta starting or autotransformer starting is 2 seconds.

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96

Colors of the leads

Lead Flat cable Single leads

1 = L1 Brown Black

2 = L2 Black Yellow

3 = L3 Grey Red

PE Yellow/green Green

0,47 µF

1 2

3 4

1 = L1: Brown2 = L2: Black3 = L3: Grey4 = PE: Yellow/green

0.47 μF


Installation MS6

42

0.2 Lightning protectionThe installation can be fitted with a special overvoltage protective device to protect the motor from voltage surges in the electricity supply lines when lightning strikes somewhere in the area, see fig. 24.

Fig. 24 Fitting an overvoltage protective device

The overvoltage protective device will not, however, protect the motor against a direct stroke of lightning.The overvoltage protective device should be connected to the installation as close as possible to the motor and always in accordance with local regulations. Ask Grundfos for lightning protective devices.

Electrical connectionFor electrical connection via the MP 204, see theseparate installation and operating instructions for this unit.

When a conventional motor starter is being used, the electrical connection should be carried out as described below.

0.2.1 Checking of direction of rotationWhen the motor has been connected to the electricity supply, determine the correct direction of rotation as follows:1. Start the motor and check the direction of rotation

by watching the motor shaft.2. Compare the result from point 1 with the demand of

the pump.3. Interchange two of the phase connections in case

the direction of rotation is wrong. 4. In the case of motors wound for star-delta starting,

exchange U1 by V1 and U2 by V2.

0.2.2 Motors wound for direct-on-line startingThe connection of MS6 motors wound for direct-on-line starting appears from the table below and fig. 25.

Fig. 25 Motors wound for direct-on-line starting

Motors wound for star-delta startingThe connection of MS6 motors wound for star-delta starting appears from the table below and fig. 26.

TM00

135

7 36

05

825045 825017

L1L2

PEL3

L

PEN

MainsCable/connection

Grundfos MS6 motors

PE PE (yellow/green)L1 U (brown)L2 V (black)L3 W (grey)

TM03

209

9 37

05

Connection Grundfos MS6 motors

PE Yellow/green

U1 Brown

V1 Black

W1 Grey

W2 Brown

U2 Black

V2 Grey

L1

PE WVU

PE

M

L3L2

3


Installation MS6

43

Fig. 26 Motors wound for star-delta starting

If star-delta starting is not required, but direct-on-line starting is, the motors should be connected as shown in fig. 27.

Fig. 27 Motors wound for direct-on-line starting

Fitting a Pt100/Pt1000 sensorIf the Tempcon temperature transmitter is not operating as described in Variable frequency drive operation on page 36, it is possible to install a Pt100 or Pt1000sensor in the motor.

A Pt100 sensor allows

• continuous monitoring of the motor temperature and• protection against too high motor temperature.The Pt100/Pt1000 sensor is placed in a specially made staybolt.

Fig. 28 Fitting a Pt100/Pt1000 sensor

TM03

210

0 37

05TM

03 2

101

3705

L2L1

M

L3PE

W2 U2 V2

PE U1 W1V1

3

L2L1

M

L3PE

W2 U2 V2

PE U1 W1V1

3

TM03

545

3 36

06

B

D

1 2

5 7 1 4

A

C


Installation MS6

44

To fit the Pt100 sensor, proceed as follows:

See fig. 28.

1. Slacken the four hexagon-head screws in the motor top.

2. Check the motor liquid level.3. Remove one of the hexagon-head screws close to

the plug, pos. A.4. Fit the special staybolt in the motor top, pos. C.5. Fit the motor to the pump. Tighten the screws

diagonally to 50 Nm.6. Pull the union nut, pos. B, and the rubber gasket,

pos. D, up behind the sensor and then press the sensor to the bottom of the bolt, pos. C.

7. Tighten the union nut so that the sensor cable issecured by the rubber gasket.

8. Check whether the sensor cable and the motorcable can be placed in the cable guard.

9. If not, fit the sensor cable on the side of the cable guard so that the cable is protected against damage when the pump is lowered into the borehole.

10.Fit the cable guard.11.Fasten the sensor cable to the motor cable with

cable clips.To protect the motor, it is necessary to include a PR 5714 relay in the installation, see Pt100 on page 48.

Installation and operating instructions for the PR 5714 relay is included.


45

MS6Maintenance

Maintenance and serviceThe MS6 motor is maintenance-free.

The motor is easy to service.

Service kits and service tools are available fromGrundfos.

Service videos are available at WebCAPS:

• Grundfos Insite\Toolbox\WebCAPS\Service\MS6.• From Grundfos.com:• Grundfos.com\WebCAPS\WebCAPS\Service\MS6.

ServiceThe motors can be serviced at a Grundfos servicecenter.

If Grundfos is requested to service the motor, Grundfos must be contacted with details about the motor liquid, etc. before the motor is returned for service. Otherwise Grundfos can refuse to accept the motor for service.

Possible costs of returning the motor are paid by the customer.


MS6

46

Fault finding

Fault findingFault Cause Remedy

The motor does not run.

The fuses are blown.Replace the blown fuses. If the new ones blow too, the electric installation and the submersible drop cable should be checked.

The ELCB or the voltage-operated ELCB has tripped out. Cut in the circuit breaker.

No electricity supply. Contact the electricity supply authorities.

The motor starter overload has tripped out.Reset the motor starter overload (automatically or possibly manually). If it trips out again, check the voltage. Is the voltage OK, see items e) - h).

Motor starter/contactor is defective. Replace the motor starter/contactor.

Starter device is defective. Repair/replace the starter device.

The control circuit has been interrupted or is defective. Check the electric installation.

The pump/submersible drop cable is defective. Repair/replace the pump/cable.


Fault finding MS6

47

Checking of motor and cable

Winding resistancePlease consult WebCAPS/WinCAPS to check the value measured. If the value measured does not match the value stated in WebCAPS/WinCAPS, the motor is defective. Consult the Service instructions for diagrams of how to measure the winding resistance.

1. Supply voltage

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137

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92

Measure the voltage between the phases with a voltmeter.Connect the voltmeter to the terminals in the motor starter.

The voltage should, when the motor is loaded, be within the range specified for the motor.The motor may burn if there are larger variations in voltage.Large variations in voltage indicate poor electricity supply, and the pump should be stopped until the defect has been remedied.

2. Current consumption

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92

Measure the amps of each phase while the pump is operating at a constantdischarge head (if possible, at the capacity where the motor is most heavily loaded).For maximum operating current, see nameplate.

The difference between the current in the phase with the highest consumption and the current in the phase with the lowest consumption should not exceed 5 %.If so, or if the current exceeds the rated current, there are the following possible faults:

• Contacts of the motor starter burnt. Replace the contacts.

• Poor connection in leads, possibly in the cable joint. See item 3.

• Too high or too low supply voltage. See item 1.• The motor windings are short-circuited or partly

disjointed. See item 3.• Damaged pump is causing the motor to be overloaded.

Pull out the motor for overhaul.• The resistance value of the motor windings deviates

too much. Move the phases in phase order to a more uniform load. If this does not help, see item 3.

Items 3 and 4: Measurement is not necessary when the supply voltage and the current consumption are normal.3. Winding resistance

TM00

137

3 50

92

Disconnect the submersible drop cable at the motor starter.Measure the winding resistance between the leads of the drop cable.

The deviation between the highest and the lowest value should not exceed 10 %.If the deviation is larger, pull out the motor.Measure motor, motor cable and drop cable separately, and repair/replace defective parts.

4. Insulation resistance

TM00

137

4 50

92

Disconnect the submersible drop cable at the motor starter.Measure the insulation resistance from each phase to earth (frame).Make sure that the earth connection is made carefully.

If the insulation resistance is less than 0.5 MΩ, the motor should be pulled out for motor or cable repair.Local regulations may specify other values for theinsulation resistance.


MS6

48

Accessories

Accessories

Flow sleeve

Pt100A Pt100 temperature sensor kit is available for the MS6. The sensor cable is connected to the PR 5714 relay fortemperature read-out.

Booster supportFor booster application, support kits are available for supporting the non-drive end of the motor.

Product Description Product number

TM01

075

1 21

97 -

TM01

075

0 21

97

Standard flow sleeves are easily adaptable to the MS6. The motor is prepared for a sleeve by a set of threads in one end of the mo-tor and spacers at the pump.

For further information about Grundfos flow sleeves, see Product Information PI-058, Flow sleeves 50/60 Hz.

Contact Grundfos

Product Description Cable length [m] Product number

TM03

528

1 32

06

Pt100 sensor including PR 5714 relay and cable

20 9640895340 9640868160 9640895480 96408955100 96408956

Pt100 sensor including cable

20 9640895740 9640868460 9640895880 96408959100 96408960

PR 5714 relay 96621274


Accessories MS6

49

MP 204

Cable termination kit, type KM

Zinc anodes


TM03

147

1 22

05

The MP 204 is an electronic motor protector and data collecting unit. Apart from protecting the motor, it can also provide information via GENIbus, like for instance:• trip• warning• energy consumption• input power• motor temperature.The MP 204 protects the motor primarily by measuring the motor current by means of a true RMS measurement.The pump is protected secondarily by measuring the temperature witha Tempcon sensor, a Pt100/Pt1000 sensor and a PTC sensor/thermal switch.The MP 204 is designed for single- and three-phase motors.See Product Information PI-076, Modular Controls, for further information.MP204 not for 575 V use.

96079927

Product Description VersionProduct number

TM00

788

5 22

96

For watertight shrink-joining of motorcable and submersible drop cable.

Enables the joining of• cables of equal size.• cables of different sizes. • a cable lead and a single lead.

The joint is ready for use after a fewminutes and requires no long hardening time as do resin joints.

The joint cannot be separated.

Motor cable [mm2]Number of leads

Flat cable 1.5 - 6.01.5 - 4.0

34 116251

Flat cable 6 - 1010 - 16

43 116252

Flat cable 16 - 25 34 116255

3 single leads 1.5 - 6.0 3 1162533 single leads 10 - 25 3 1162544 single leads 1.5 - 4.0 4 1162574 single leads 6 - 16 4 116258Single lead 35 - 120 1 116256

For watertight joining of motor cable and submersible drop cable by means of shrink-screw-glue casting

Screw-shrinking

6 - 5019 - 9535 - 18570 - 240

4

96636867966368689663727896637279

Reduce from 3 or 4 leads to one as from drop cable to single leads

Reducer-shrinking

10 - 5010 - 5016 - 7016 - 70

3434

96637318966373309663733196637332


TM01

443

1 01

99 -T

M01

443

0 01

99

Cathodic protection by means of zinc can be used for corrosion protection in chloride-containing liquids such as brackish water and sea water.Sacrificial anodes are placed on the outside of the pump and motor as protection against corrosion.The number of anodes required depends on the pump and motor inquestion.

Liquid temperatures:Sea water: up to 95 °F (35 °C).Brackish water (min. 1500 g/m3 chloride): up to 95 °F (35 °C).

Anode life:The zinc anodes have a life of one to four years, depending on operating conditions (temperature, flow and chloride content).

Please contact Grundfos for further details.

96421446

1

2

3


Accessories MS6

50

Motor cable program

Lightning protection

Cable clips

Length[m]

Flat cable Single leadsEPDM rubber XLPE rubber

3 x 4 mm2 + 1 G 4 mm2 3 x AWG 8 + 1 G AWG 8 4 x 1 G AWG 8 3 x 1 x AWG 8

3 96163476 5 96163539 96163474 961636608 9616371810 96163696 96163707 15 96163697 96163708 20 96163698 96163709 25 96163699 96163710 30 96163700 96163711 40 96163701 96163712 50 96163702 96163713 60 96163703 96163714 67 9616371970 96163704 96163715 80 96163705 96163716 100 96163706 96163717


TM00

135

7 36

05

Lightning protection is a special overvoltage protective device whichprotects the motor from voltage surges in the electricity supply lines when lightning strikes somewhere in the area.

825045

825045

L1L2

PEL3


Cable clips Rubber clips for fixing of the cable to the riser pipe, 7.5 m ~ 16 clips 115016


51

MS6Dimensions and weights

Dimensional sketch

3 x 208-230 V, 60 Hz, DOL

3 x 208-230 V, 60 Hz, SD

TM03

804

8 03

07

P2 Dimensions [mm] Weight [kg] Shipping volume [kW] [hp] L1 L2 d Net Gross [m³]3.7 5 608 535 143 35 42 0.0705.5 7.5 638 565 143 38 45 0.0707.5 10 663 590 143 41 48 0.0759.2 12 683 610 143 43 50 0.07511 15 781 708 143 49 58 0.09013 18 811 738 143 53 62 0.09015 20 856 783 143 58 67 0.090

18.5 25 911 838 143 64 73 0.10122 30 976 903 143 71 80 0.101

P2 Dimensions [mm] Weight [kg] Shipping volume [kW] [hp] L1 L2 d Net Gross [m³]3.7 5 608 535 143 35 - -5.5 7.5 638 565 143 38 - -7.5 10 663 590 143 41 - -9.2 12 683 610 143 43 - -11 15 781 708 143 49 - -13 18 811 738 143 53 - -15 20 856 783 143 58 - -

18.5 25 911 838 143 64 - -22 30 976 903 143 71 - -26 35 1041 968 143 78 - -30 40 1096 1023 143 84 - -


Dimensions and weights MS6

52

3 x 400 V, 50 Hz / 3 x 440-460 V, 60 Hz, DOL

3 x 500-525 V, 50 Hz / 3 x 575 V, 60 Hz, DOL


18.5 25 911 838 143 64 73 0.10122 30 976 903 143 71 80 0.10126 35 1041 968 143 78 88 0.11030 40 1096 1023 143 84 94 0.110


18.5 25 911 838 143 64 73 0.10122 30 976 903 143 71 80 0.10126 35 1041 968 143 78 88 0.11030 40 1096 1023 143 84 94 0.110


53

MS6Electrical data

Electrical data3 x 208 V, 60 Hz, DOL

3 x 208 V, 60 Hz, SD

3 x 230 V, 60 Hz, DOL

PowerSF

Current Line to LineResistance Efficiency Powerfactor Speed Thrust LRC LRT BT Moment

of inertia KVAFL SF

[kW] [HP] [Amp] [Amp] [Ohm] 50 % 75 % 100 % SF 50 % 75 % 100 % SF [rpm] [kN] [lbf] [%] [%] [%] [kgm²] [lbin2] CODE

3.7 5 1.15 15.6 18.2 0.800 78.5 82.0 82.0 81.0 0.77 0.83 0.85 0.84 3470 7.5 1686 380 110 200 0.0052 0.1234 F5.5 7.5 1.15 23.0 27.0 0.567 80.5 83.0 82.0 80.0 0.80 0.85 0.85 0.85 3450 7.5 1686 355 110 180 0.0061 0.1448 E7.5 10 1.15 30.5 36.5 0.407 81.5 83.5 82.5 80.5 0.80 0.85 0.86 0.85 3450 7.5 1686 370 110 185 0.0069 0.1637 F9.2 12.5 1.15 37.5 44.0 0.314 82.0 84.0 83.0 81.5 0.79 0.85 0.86 0.86 3450 7.5 1686 380 110 190 0.0075 0.1780 F11 15 1.15 44.5 52.0 0.245 82.0 84.5 84.0 82.5 0.77 0.84 0.86 0.86 3460 27.5 6182 395 110 195 0.0083 0.1970 F13 17.5 1.15 52.5 61.0 0.201 82.0 84.5 84.0 83.0 0.76 0.83 0.86 0.86 3470 27.5 6182 395 105 195 0.0092 0.2183 F15 20 1.15 60.0 70.0 0.174 82.5 84.5 84.0 83.0 0.78 0.84 0.86 0.87 3470 27.5 6182 400 105 185 0.0106 0.2515 F

18.5 25 1.15 73.5 85.5 0.133 83.0 85.0 84.5 83.5 0.79 0.84 0.86 0.87 3460 27.5 6182 415 110 185 0.0123 0.2919 F22 30 1.15 87.5 102.0 0.113 83.0 85.0 84.5 83.5 0.79 0.85 0.87 0.87 3460 27.5 6182 420 105 180 0.0143 0.3393 G

PowerS.F.

Current Line to LineEfficiency Powerfactor Speed Thrust LRC LRT BT Moment

of inertia KVAF.L. S.F. Resistance

[kW] [HP] [Amp] [Amp] [Ohm] 50 % 75 % 100 % SF 50 % 75 % 100 % SF [rpm] [lbf] [%] [%] [%] [lb*in2] CODE

3.7 5 1.15 15.6 18.2 0.800 78.5 82.0 82.0 81.0 0.77 0.83 0.85 0.84 3470 1686 380 110 200 0.1234 F5.5 7.5 1.15 23.0 27.0 0.567 80.5 83.0 82.0 80.0 0.80 0.85 0.85 0.85 3450 1686 355 110 180 0.1448 E7.5 10 1.15 30.5 36.5 0.407 81.5 83.5 82.5 80.5 0.80 0.85 0.86 0.85 3450 1686 370 110 185 0.1637 F9.2 12.5 1.15 37.5 44.0 0.314 82.0 84.0 83.0 81.5 0.79 0.85 0.86 0.86 3450 1686 380 110 190 0.1780 F11 15 1.15 44.5 52.0 0.245 82.0 84.5 84.0 82.5 0.77 0.84 0.86 0.86 3460 6182 395 110 195 0.1970 F13 17.5 1.15 52.5 61.0 0.201 82.0 84.5 84.0 83.0 0.76 0.83 0.86 0.86 3470 6182 395 105 195 0.2183 F15 20 1.15 60.0 70.0 0.174 82.5 84.5 84.0 83.0 0.78 0.84 0.86 0.87 3470 6182 400 105 185 0.2515 F

18.5 25 1.15 73.5 85.5 0.133 83.0 85.0 84.5 83.5 0.79 0.84 0.86 0.87 3460 6182 415 110 185 0.2919 F22 30 1.15 87.5 102.0 0.113 83.0 85.0 84.5 83.5 0.79 0.85 0.87 0.87 3460 6182 420 105 180 0.3393 G26 35 1.15 102.0 120.0 0.092 83.0 85.0 85.0 83.5 0.79 0.84 0.87 0.87 3460 6182 445 110 180 0.3868 G30 40 1.15 118.0 138.0 0.079 83.0 85.5 85.0 84.0 0.78 0.84 0.87 0.87 3460 6182 460 110 180 0.4271 G

PowerS.F.




3.7 5 1.15 14.0 16.0 0.800 77.5 81.5 83.0 82.5 0.72 0.80 0.83 0.84 3500 1686 490 145 245 0.1234 F5.5 7.5 1.15 20.4 23.4 0.567 79.5 83.0 83.5 83.0 0.76 0.82 0.85 0.86 3490 1686 475 145 230 0.1448 E7.5 10 1.15 27.5 31.5 0.407 80.0 83.5 84.0 83.5 0.73 0.81 0.85 0.86 3490 1686 490 150 235 0.1637 F9.2 12.5 1.15 34.0 39.0 0.314 80.5 83.5 84.5 84.0 0.71 0.80 0.84 0.85 3490 1686 495 145 240 0.1780 F11 15 1.15 41.5 47.0 0.245 80.0 83.5 84.5 84.5 0.66 0.77 0.82 0.84 3500 6182 505 145 250 0.1970 F13 17.5 1.15 50.0 56.0 0.201 80.0 83.5 84.5 84.5 0.64 0.75 0.81 0.83 3500 6182 500 140 250 0.2183 F15 20 1.15 56.0 63.5 0.174 80.5 84.0 85.0 85.0 0.68 0.78 0.83 0.85 3500 6182 510 140 245 0.2515 F

18.5 25 1.15 69.0 78.0 0.133 81.0 84.5 85.5 85.0 0.68 0.78 0.83 0.85 3500 6182 530 145 245 0.2919 F22 30 1.15 81.0 92.0 0.113 81.5 84.5 85.5 85.0 0.69 0.79 0.84 0.85 3490 6182 540 145 235 0.3393 G


Electrical data MS6

54

3 x 230 V, 60 Hz, SD

3 x 400 V, 60 Hz, DOL

3 x 460 V, 60 Hz, DOL

PowerS.F.




3.7 5 1.15 14.0 16.0 0.800 77.5 81.5 83.0 82.5 0.72 0.80 0.83 0.84 3500 1686 490 145 245 0.1234 F5.5 7.5 1.15 20.4 23.4 0.567 79.5 83.0 83.5 83.0 0.76 0.82 0.85 0.86 3490 1686 475 145 230 0.1448 E7.5 10 1.15 27.5 31.5 0.407 80.0 83.5 84.0 83.5 0.73 0.81 0.85 0.86 3490 1686 490 150 235 0.1637 F9.2 12.5 1.15 34.0 39.0 0.314 80.5 83.5 84.5 84.0 0.71 0.80 0.84 0.85 3490 1686 495 145 240 0.1780 F11 15 1.15 41.5 47.0 0.245 80.0 83.5 84.5 84.5 0.66 0.77 0.82 0.84 3500 6182 505 145 250 0.1970 F13 17.5 1.15 50.0 56.0 0.201 80.0 83.5 84.5 84.5 0.64 0.75 0.81 0.83 3500 6182 500 140 250 0.2183 F15 20 1.15 56.0 63.5 0.174 80.5 84.0 85.0 85.0 0.68 0.78 0.83 0.85 3500 6182 510 140 245 0.2515 F

18.5 25 1.15 69.0 78.0 0.133 81.0 84.5 85.5 85.0 0.68 0.78 0.83 0.85 3500 6182 530 145 245 0.2919 F22 30 1.15 81.0 92.0 0.113 81.5 84.5 85.5 85.0 0.69 0.79 0.84 0.85 3490 6182 540 145 235 0.3393 G26 35 1.15 97.0 108.0 0.092 81.0 84.5 85.5 85.5 0.67 0.78 0.83 0.85 3500 6182 570 150 235 0.3868 G30 40 1.15 112.0 126.0 0.079 81.0 84.5 85.5 85.5 0.66 0.77 0.82 0.84 3490 6182 585 155 235 0.4271 G

PowerS.F.




3.7 5 1.15 7.4 8.5 3.199 78.0 81.5 82.5 82.0 0.75 0.81 0.84 0.85 3490 1686 440 130 225 0.1234 F5.5 7.5 1.15 10.6 12.4 2.269 80.0 83.0 83.0 82.0 0.78 0.84 0.85 0.86 3470 1686 420 125 205 0.1448 E7.5 10 1.15 14.4 16.8 1.627 81.0 83.5 83.5 82.5 0.77 0.83 0.86 0.86 3470 1686 440 130 210 0.1637 F9.2 12.5 1.15 17.6 20.4 1.254 81.0 84.0 84.0 83.0 0.75 0.83 0.85 0.86 3480 1686 445 130 215 0.1780 F11 15 1.15 21.2 24.2 0.978 81.0 84.0 84.5 84.0 0.72 0.81 0.84 0.86 3480 6182 460 130 220 0.1970 F13 17.5 1.15 25.0 28.5 0.804 81.0 84.0 84.5 84.0 0.71 0.80 0.84 0.85 3490 6182 455 120 225 0.2183 F15 20 1.15 28.5 32.5 0.697 81.5 84.5 85.0 84.0 0.73 0.81 0.85 0.86 3490 6182 465 120 215 0.2515 F

18.5 25 1.15 35.0 40.0 0.532 82.0 85.0 85.5 84.5 0.73 0.82 0.85 0.86 3480 6182 485 130 215 0.2919 F22 30 1.15 41.5 47.5 0.450 82.0 85.0 85.5 84.5 0.75 0.82 0.86 0.86 3480 6182 490 125 210 0.3393 G26 35 1.15 49.0 56.0 0.367 82.0 85.0 85.5 85.0 0.73 0.82 0.85 0.86 3480 6182 515 130 210 0.3868 G30 40 1.15 57.0 65.0 0.314 82.0 85.0 85.5 85.0 0.73 0.81 0.85 0.86 3480 6182 530 135 210 0.4271 G

PowerS.F.




3.7 5 1.15 7.1 8.1 3.199 77.5 81.5 83.0 82.5 0.72 0.80 0.83 0.84 3500 1686 490 145 245 0.1234 F5.5 7.5 1.15 10.2 11.6 2.269 79.5 83.0 83.5 83.0 0.76 0.82 0.85 0.86 3490 1686 470 140 230 0.1448 E7.5 10 1.15 13.8 15.8 1.627 80.0 83.5 84.0 83.5 0.73 0.81 0.85 0.86 3490 1686 490 150 235 0.1637 F9.2 12.5 1.15 17.0 19.4 1.254 80.5 83.5 84.5 84.0 0.71 0.80 0.84 0.85 3490 1686 495 145 240 0.1780 F11 15 1.15 20.8 23.4 0.978 80.0 83.5 84.5 84.5 0.66 0.77 0.82 0.84 3500 6182 505 145 250 0.1970 F13 17.5 1.15 25.0 28.0 0.804 80.0 83.5 84.5 84.5 0.64 0.75 0.81 0.83 3500 6182 500 140 250 0.2183 F15 20 1.15 28.0 31.5 0.697 80.5 84.0 85.0 85.0 0.68 0.78 0.83 0.85 3500 6182 510 140 245 0.2515 F

18.5 25 1.15 34.5 39.0 0.532 81.0 84.5 85.5 85.0 0.68 0.78 0.83 0.85 3500 6182 530 145 245 0.2919 F22 30 1.15 40.5 46.0 0.450 81.5 84.5 85.5 85.0 0.69 0.79 0.84 0.85 3490 6182 540 145 235 0.3393 G26 35 1.15 48.5 54.5 0.367 81.0 84.5 85.5 85.5 0.67 0.78 0.83 0.85 3500 6182 570 150 235 0.3868 G30 40 1.15 56.0 63.0 0.314 81.0 84.5 85.5 85.5 0.66 0.77 0.82 0.84 3490 6182 585 155 235 0.4271 G


Electrical data MS6

55

3 x 575 V, 60 Hz, DOL

3 x 400 V, 50 Hz, DOL

PowerS.F.




3.7 5 1.15 5.7 6.5 5.051 77.5 81.5 83.0 82.5 0.73 0.80 0.84 0.84 3500 1686 475 140 240 0.1234 F5.5 7.5 1.15 8.2 9.5 3.821 80.0 83.0 83.0 82.0 0.78 0.84 0.85 0.86 3470 1686 425 130 210 0.1448 E7.5 10 1.15 11.0 12.8 2.660 81.0 83.5 84.0 83.0 0.78 0.83 0.86 0.86 3470 1686 435 130 210 0.1637 E9.2 12.5 1.15 13.4 15.6 2.174 81.5 84.0 84.0 83.0 0.76 0.83 0.86 0.86 3470 1686 435 125 210 0.1780 E11 15 1.15 16.0 18.6 1.725 81.5 84.0 84.5 83.5 0.74 0.82 0.85 0.86 3480 6182 440 120 210 0.1970 E13 17.5 1.15 19.0 21.8 1.428 82.0 84.5 84.5 83.5 0.74 0.82 0.85 0.86 3480 6182 425 110 205 0.2183 D15 20 1.15 21.6 25.0 1.260 82.5 85.0 84.5 83.5 0.77 0.84 0.86 0.86 3470 6182 415 110 195 0.2515 D

18.5 25 1.15 26.5 30.5 1.003 83.0 85.0 85.0 83.5 0.78 0.84 0.86 0.87 3470 6182 425 110 190 0.2919 D22 30 1.15 31.5 36.5 0.814 83.0 85.0 85.0 84.0 0.78 0.84 0.86 0.87 3470 6182 440 110 190 0.3393 E26 35 1.15 37.0 43.0 0.663 83.0 85.5 85.0 84.0 0.78 0.84 0.86 0.87 3470 6182 460 115 185 0.3868 E30 40 1.15 43.0 49.5 0.546 83.0 85.5 85.5 84.5 0.76 0.83 0.86 0.87 3470 6182 495 125 195 0.4271 F

PowerS.F.


of inertiaF.L. S.F. Resistance

[kW] [HP] [Amp] [Amp] [Ohm] 50 % 75 % 100 % SF 50 % 75 % 100 % SF [rpm] [lbf] [%] [%] [%] [lb*in2]

3.7 5 1 8.1 3.199 81.1 82.8 82.6 0.78 0.84 0.86 2890 1686 500 165 250 0.12345.5 7.5 1 11.8 2.269 82.4 83.2 82.5 0.80 0.86 0.86 2870 1686 475 160 230 0.14487.5 10 1 16.0 1.627 82.6 83.5 82.9 0.78 0.84 0.86 2870 1686 495 165 235 0.16379.2 12.5 1 19.8 1.254 82.8 83.8 83.3 0.76 0.84 0.86 2870 1686 495 165 245 0.178011 15 1 24.0 0.978 82.4 83.9 83.7 0.70 0.80 0.84 2880 6182 500 165 255 0.197013 17.5 1 28.5 0.804 82.2 83.8 83.7 0.68 0.80 0.82 2880 6182 495 155 255 0.218315 20 1 32.0 0.697 82.9 84.3 84.1 0.72 0.82 0.84 2880 6182 510 155 250 0.2515

18.5 25 1 39.5 0.532 83.3 84.8 84.6 0.72 0.82 0.84 2880 6182 530 165 250 0.291922 30 1 47.0 0.450 83.6 84.8 84.6 0.74 0.82 0.84 2880 6182 540 160 240 0.339326 35 1 56.0 0.367 83.4 84.8 84.6 0.72 0.82 0.84 2880 6182 565 165 245 0.386830 40 1 65.0 0.314 83.3 84.7 84.6 0.70 0.80 0.84 2880 6182 580 170 240 0.4271


MS6

56

Curves

Curves

Description

Fig. 29 Example of MS6 performance curves

To get access to all the parameters shown, it is necessary to choose an operating point. In this case, rated power (P2 = 7.5 kW) was chosen. Parameters to be read out:

MS

6 75

kW

Parameter Reading

Motor type MS6T30

Rated power (P2) 7.5 kW

Supply voltage 3 x 400 V

Frequency 50 Hz

Actual power (P2) P2 = 7.5 kW

Power factor (cos ϕ) cos ϕ = 0.84

Efficiency (η) η = 81.5 %

Current I = 15.8 A

Power consumption (P1) P1 = 9.2 kW

Speed of rotation n = 2860


MS6

57


MS6

58


MS6

59


GRUNDFOS Pumps Corporation 17100 West 118th TerraceOlathe, Kansas 66061Phone: +1-913-227-3400 Telefax: +1-913-227-3500

GRUNDFOS Canada Inc. 2941 Brighton Road Oakville, Ontario L6H 6C9 CanadaPhone: +1-905 829 9533 Telefax: +1-905 829 9512

Bombas GRUNDFOS de Mexico S.A. de C.V. Boulevard TLC No. 15Parque Industrial Stiva AeropuertoApodaca, N.L. Mexico 66600Phone: +52-81-8144 4000 Telefax: +52-81-8144 4010

www.grundfos.com

L-MS6-PG-01 0310US© 2010 Grundfos Pumps Corp. Subject to alterations.

Being responsible is our foundationThinking ahead makes it possible

Innovation is the essence


Date post:	07-Mar-2018
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