VOLUME: IIIC SCHEDULE LOCAL ISOLATING SWITCH...

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/7: 1 DCPL-11Z02

VOLUME: IIIC

SCHEDULE‐IIIC/7

LOCAL CONTROL BOARDS/PANELS LOCAL ISOLATING SWITCH UNITS

AND LOCAL PUSH BUTTON STATIONS 1.0 EQUIPMENT 1.1 Make : 1.2 Type : 1.3 Reference Standard : 1.4 Construction a) Degree of protection : b) Sheet metal thickness mm : c) Floor channel sills, vibration damping pads and kick plate furnished? : 1.5 Equipment Mounting a) All Supervision relays, with flag

indicator are flush mounted ? : 1.6 Nameplate a) Material : b) Thickness : c) Size for - Equipment : Panels : 1.7 Internal Illumination a) Volt : b) Watt : c) Door switch controlled : 1.8 Space Heater


a) Volt : b) Watt : c) Thermostat Controlled ? : 1.9 Plug Socket a) Type : b) Rating : 1.10 Illumination, space heater & plug socket circuits provided with individual switch fuse units ? : 1.11 A.C./D.C. Supply Type & rating of isolating switch fuse units for - a) Incoming A.C. supply : b) Incoming D.C. supply : 1.12 Internal Wiring a) Wire type : b) Voltage grade : c) Conductor material : d) Conductor size for - i) Current/control circuit : ii) Voltage circuit : e) Wires identified at both ends with ferrules ? : 1.13 Terminal block a) Make : b) Type/Catalogue No. : c) 20% spare terminals furnished? : 1.14 Ground Bus


a) Materials : b) Size mm : 1.15 Painting a) Type of finish : b) Colour Shade - Inside/ Outside : c) Details of painting procedure furnished ? : 1.16 Mimic a) Material : b) Width : 2.0 LAMPS 2.1 Make : 2.2 Type : 2.3 Reference Standard : 2.4 Voltage : 2.5 15% Extra lamps furnished ? : 3.0 AUXILIARY RELAYS Make Type Cat. No. 3.1 General Service A.C. Relay : 3.2 General Service D.C. Relay : 3.3 General Service Latch Relay : 3.4 Heavy Duty AC & DC Relay : 3.5 Timers - Electronic plug- in Type Version : 3.6 Circuit Supervision A.C. relay : 3.7 Circuit Supervision D.C. relay : 4.0 SWITCHES A.C. D.C. 4.1 Load Break Switch


a) Make : b) Type : c) Reference Standard : d) Breaking Current at 415V A.C. or 220V D.C. : i) : ii) : iii) : iv) : 4.2 Breaker Control Switch a) Make : b) Type : c) Reference Standard : d) Contact Development as per specification Drawing ? : Yes/No e) Contact Rating 240V A.C. 220V D.C. i) Make & Continuous Amp. : ii) Break (Inductive) Amp. : 4.3 Meter Selector Switch a) Make : b) Type : c) Reference Standard : d) Contact Rating 240V A.C. 220V D.C. i) Make & Continuous Amp. : ii) Break (Inductive) Amp. : 5.0 FUSE 5.1 Make :


5.2 Type : 5.3 Reference Standard : 5.4 Rupturing Capacity KA rms (Sym) :

5.5 Continuous current at 50 Deg.C

ambient and within cubicle Amps. : 5.6 Cut-off currents KA peak : 5.7 Fuse characteristics furnished

for various fuse rating ? : 6.0 PUSH BUTTON 6.1 Make : 6.2 Type : 6.3 Reference Standard : 6.4 Contact Rating : 240V A.C. 220V D.C. a) Make & Continuous Amps. : b) Break (Inductive) Amps. : 6.5 No. & type of contacts provided per button : 7.0 INDICATING INSTRUMENT Ammeter Voltmeter 7.1 Make : 7.2 Type : 7.3 Reference Standard : 7.4 Type of Movement : 7.5 Accuracy class : 7.6 Scale in Degrees :


7.7 VA Burden a) Current Coil : b) Voltage Coil : 8.0 ANNUNCIATOR 8.1 Make & model : 8.2 Type : 8.3 Reference Standard : 8.4 Sequence designation : 8.5 No. of windows per group : 8.6 Overall dimension of a group (mm) : 8.7 Detailed write-up furnished ? : 9.0 TEMPERATURE SCANNER 9.1 Make & model : 9.2 Type : 9.3 Reference Standard : 9.4 No. of points per scanner : 9.5 Common alarm relay provided ? : 9.6 Overall dimension (mm) : 9.7 Detailed write-up furnished ? : 9.8 Rating of output contacts : 9.9 No. of 4-20 mA outputs provided : 10.0 CONTACTORS 10.1 Make : 10.2 Type : 10.3 Reference Standard : 10.4 Duty class :


10.5 Utilization category : 10.6 Pair of Contacts/contactor : 10.7 Contact rating 204V A.C. 220V D.C. a) Make and continuous Amp : b) Break (inductive) Amp : 11.0 LOCAL PUSH BUTTON STATION 11.1 Make : 11.2 Type : 11.3 Enclosure : 11.4 Degree of protection : 11.5 Local Push Button Station enclosure furnished with : a) Inscription plate : b) Knock out for cable/circuit entry : c) Cable entry from bottom/side only : Yes/No 11.6 Contacts of each push button a) Number furnished :

b) Current rating make & continuous break (inductive) :

11.7 Stop P.B having provision of

locking in lockout position :


VOLUME: IIIC

SCHEDULE‐IIIC/8

GENERATOR TRANSFORMER, UNIT TRANSFORMER

STANDBY TRANSFORMER AND HT AUXILIARY TRANSFORMER

A. GENERATOR TRANSFORMER 1.0 General 1.1 Make : 1.2 Type : 1.3 Number of Winding per Phase : 1.4 Number of Phase : 1.5 Number of Unit per set : 1.6 Reference Standard : 2.0 Rating 2.1 Type of Cooling : 2.2 Rated Output MVA :

i) With ONAN Cooling :

ii) With ONAF Cooling :

iii) With OFAN Cooling :

iv) With OFAF Cooling : 2.3 Rated Voltage KV

H.V. :

L.V. : 2.4 Rated Current Amps.

H.V :


L.V. :

2.5 Rated Frequency Hz : 2.6 Connection

H.V. :

L.V. : 2.7 Vector Group Reference : 2.8 Voltage Withstand Time Sec.

a) 110% of rated voltage :

b) 125% of rated voltage :

c) 140% of rated voltage :

d) 150% of rated voltage : 2.9 Overfluxing Capability

a) For Overfluxing Factor 1.1... Sec. :

b) 1.25 ..Sec. :

c) 1.4….Sec. : 3.0 Temperature 3.1 Reference Ambient Temperature : 3.2 Temperature rise over

reference ambient Deg.C :

a) Of Top oil by thermometer :

b) Of winding by resistance :

3.3 Maximum continuous over

loading capacity of the transformer without exceeding the specified winding temperature :

4.0 Tappings 4.1 Type :


4.2 Capacity : 4.3 Range - Steps x % Variation : 4.4 Taps provided on HV/LV Winding : 5.0 Insulation Level KVp/KV 5.1 H.V. : 5.2 L.V. : 5.3 H.V. Neutral : 5.4 L.V. Neutral : 6.0 Impedances at Principal Tap

at Rated Frequency and 75 Deg.C winding temperature % :

6.1 Base MVA : 6.2 Impedance : 6.3 Reactance : 6.4 Resistance at 75 Deg.C : 6.5 Zero Sequence Impedance at 75 Deg.C : 6.6 Capacitance of Windings micro farad/phase :

a) H.V. - Earth :

b) L.V. - Earth :

c) H.V. - L.V. : 7.0 Guaranteed Losses at

Principal Tap, Full Load and 75 Deg.C KW :

7.1 No load losses : 7.2 Load losses : 7.3 Cooler losses : 7.4 Tolerance on losses : 8.0 Efficiency at 75 Deg.C and

0.8 Power Factor Lag % :


8.1 At full load : 8.2 At 3/4 full load : 8.3 At 1/2 full load : 8.4 Maximum Efficiency : 8.4.1 Load and Power Factor at

which it occurs : 9.0 Regulation at Full Load at 75 Deg.C % : 9.1 At unity power factor : 9.2 At 0.8 power factor lagging : 10.0 No Load Current referred to HV Amps. : 10.1 At 90% rated voltage : 10.2 At 100% rated voltage : 10.3 At 110% rated voltage : 10.4 At 125% rated voltage : 10.5 At 140% rated voltage : 11.0 Approximate Maximum Flux density Web/Sq.m :

11.1 At 90% rated voltage : 11.2 At 100% rated voltage : 11.3 At 110% rated voltage : 11.4 At 125% rated voltage : 11.5 At 140% rated voltage : 12.0 Maximum Current Density Amps/Sq.cm : 12.1 H.V. Winding : 12.2 L.V. Winding : 13.0 Withstand Time without

injury for Sec.


13.1 Three phase dead short- circuit at terminal with rated voltage maintained on the other side :

13.2 Single phase short-circuit

at terminal with rated voltage maintained on other side :

14.0 Cooling System 14.1 a) No. x Capacity of

cooling unit furnished :

b) No. of cooling units required for full load operation :

14.2 Each Cooling Unit is

provided with :

a) No. x KW of oil pump motor :

b) No. x KW of fan motor :

c) No. of standby fan : d) No. of standby oil pumps :

14.3 Motors rated for voltage-

phase-frequency : 14.4 Automatic Operation of

cooler pumps and fans provided ? :

14.5 Transformer is capable of

delivering rated output under following conditions : a) Failure of all pumps and fans of one cooling unit :

i) Continuous in % rated, MVA :

ii) Rated output for... min. :

b) Failure of one complete cooling unit including radiator, fans, pumps etc. :



ii) Rated output for ... min. :

c) Failure of fans and pumps of all the cooler units :



d) Failure of complete cooling system including radiators, fans, pumps, etc. :

i) Continuous in % rated, MVA : ii) Rated output for... min. : 14.6 Schematic Flow Diagram of the Cooling System Furnished ? : 14.7 Oil Pumps

a) Make : b) Type : c) Catalogue Furnished :

15.0 Details of Tank 15.1 Material : 15.2 Thickness of sides mm : 15.3 Thickness of bottom mm : 15.4 Thickness of cover mm : 15.5 Tank Designed for :

Vacuum : ...... mm of Hg

Pressure : ...... 16.0 Core 16.1 Type - Core or shell : 16.2 Core material : 16.3 Thickness of lamination mm : 16.4 Insulation of lamination : 16.5 Equivalent cross-sectional area:


17.0 Coils 17.1 Type of Coil :

a) H.V. : b) L.V. : 17.2 Conductor Material : 17.3 Insulating Material :

a) H.V. - Turn :

b) L.V. - Turn :

c) L.V. - Earth :

d) H.V. - L.V. :

e) H.V. Earth : 18.0 Tap Changer 18.1 Make : 18.2 Type : 18.3 Rated Voltage KV : 18.4 Rated Current Amps. : 18.5 Auxiliary Power KW : 18.6 Time required for one step

change Secs. : 18.7 Rated Voltage Volts :

a) Tap-change motor :

b) Control circuit : 18.8 Control

a) Manual/Local Electrical/ Remote Electrical :

b) Group/Solo :

18.9 Voltage Control


Automatic/Non-automatic : 18.10 Provision for parallel

operation Yes/No : 18.11 Maximum Short Circuit Current withstand capability :

a) Current :

b) Time :

18.12 Loose equipment and provisions for remote control furnished as per specification ? : 18.13 Local manual operation feasible from

standing height from ground ? : 18.14 Local indicator furnished for :

a) Tap position :

b) Operation counter : 18.15 In case of off-circuit tap changer :

a) Padlocking provided : Yes/No b) Auxiliary switch for interlock provided : Yes/No

c) Safety limit switch provided : Yes/No d) Discrepancy detector provided : Yes/No 18.16 In case of On-load tap changer :

A . Interlocks as per specification provided : Yes/No

B. a) Voltage Regulating relay provided :

i) Make : ii) Type : iii) Sensitivity (Dead band) and nominal value range : iv) Timer range :


v) Literature furnished ? :

b) Under voltage Relay :

i) Voltage range : ii) Timer range : 19.0 Insulating Oil 19.1 Approximate volume Litre : 19.2 10% excess oil furnished ? : 19.3.1 Oil conforms to : 19.3.2 Details of oil furnished : 19.4 a) Oil preservation system provided ? :

b) Type :

20.0 Bushings H V/LV HVN/LVN 20.1 Make : 20.2 Type : 20.3 Reference Standard : 20.4 Voltage class KV : 20.5 Type of atmosphere : 20.6 Creepage Distance mm : 20.7 Weight : 20.8 Free space required for

bushing removal : 20.9 Test terminals for H.V.

bushing provided ? : 20.10 One minute power frequency withstand voltage KV rins : 20.11 Impulse withstand voltage KV peak : 21.0 Minimum Clearance 21.1 Between Phases :


a) In air

i) HV mm : ii) LV mm : b) In oil

i) HV mm :

ii) LV mm 21.2 Between Phase & Earth : a) In air


i) HV mm :

ii) LV mm : 22.0 Terminal Connections 22.1 H.V. : 22.2 L.V. : 22.3 H.V. Neutral : 22.4 L.V. Neutral : 23.0 Marshalling Box 23.1 Weatherproof, suitable for

outdoor duty : 23.2 Degree of protection : 24.0 Terminal Blocks 24.1 Make : 24.2 Type : 24.3 20% spare terminals furnished ? : 25.0 Wiring 25.1 Cable type : 25.2 Voltage grade Volt :


25.3 Conductor Size Sq.mm : Material Cu. : Stranded Yes/No : 26.0 Trip and Alarm Contacts Ratings

220V D.C

240V A.C.

26.1 Voltage Volt : 26.2 Rated Amps. :

Making Current : Breaking Current (Inductive Breaking) :

Each transformer furnished with fittings and accessories as per specification ? Yes/No:

28.0 Detail of Conservator 28.1 Volume of Conservator : 28.2 Volume of oil between the

highest and lowest levels : 29.0 Pressure Release Device a) Minimum pressure the device is set

to operation/rupture KN/Sq.m : b) Alarm and trip contacts provided : 30.0 Spare Parts

Each transformer furnished with spare parts as per specification :

31.0 Approximate Overall Dimension 31.1 Length mm : 31.2 Breadth mm : 31.3 Height mm : Crane lift (a) for untanking core and coil

assembly (including sling) (b) tank cover


in case of Bell type tank mm : 32.0 Approximate Weights 32.1 Core and Coil Kg. : 32.2 Tank cover for Bell type tank Kg. : 32.3 Tank and fittings Kg. : 32.4 Oil Kg. : 32.5 Total Weight Kg : 33.0 Shipping Data 33.1 Weight of the heaviest package Kg. :

33.2 Dimension of the largest

package (L x B x H) mm : 34.0 Tests to be conducted on

each Transformer 34.1 Routine tests as per speci-

fication/relevant standard : 34.2 Tank pressure test on each

transformer :

a) Test Pressure KN/Sq.m:

b) Duration Hours :

c) Permanent deflection : 34.3 Tank vacuum test on each transformer :

a) Vacuum KN/Sq.m :

b) Duration Hours :

c) Permanent deflection : 34.4 Oil leak test on each transformer :

a) Test pressure :

b) Duration :

34.5 Core bolt withstand voltage for 1 minute on each transformer KV :


35.0. NEUTRAL CURRENT TRANSFORMER 35.1 General 35.2 Make : 35.3 Type : 35.4 Reference Standard : 35.5 Use : 35.6 Rating a) C.T. Ratio : b) Class : c) Insulation level : d) Burden : 35.7 Insulation Class a) Temperature rise at rated burden over

top oil temperature Deg.C : 35.8 Characteristics a) Secondary resistance Rct Ohm at 75 Deg.C :

b) Knee point voltage Vk Volt : c) Excitation current at Vk/2 Amps. : 35.9 Dimensions and Weights a) Dimension (L x B x H) mm : b) Weight Kg. : c) Tests As per Standard ? :


B. UNIT TRANSFORMER, STANDBY TRANSFORMER AND HT AUXILIARY TRANSFORMER

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

1.0 General 1.1 Make : 1.2 Type : 1.3 Number of Winding per Phase : 1.4 Number of Phase : 1.5 Number of Unit per set : 1.6 Reference Standard : 2.0 Rating 2.1 Type of Cooling : 2.2 Rated Output MVA :

i) With ONAN Cooling :

ii) With ONAF Cooling :

iii) With OFAN Cooling :

iv) With OFAF Cooling : 2.3 Rated Voltage KV

H.V. :

L.V. : 2.4 Rated Current Amps.

H.V :

L.V. : 2.5 Rated Frequency Hz : 2.6 Connection

H.V. :


UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

L.V. :

2.7 Vector Group Reference : 2.8 Voltage Withstand Time Sec.

a) 110% of rated voltage :

b) 125% of rated voltage :

c) 140% of rated voltage :

d) 150% of rated voltage : 2.9 Overfluxing Capability

a) For Overfluxing Factor 1.1... Sec. :

b) 1.25 ..Sec. :

c) 1.4….Sec. : 3.0 Temperature 3.1 Reference Ambient Temperature : 3.2 Temperature rise over

reference ambient Deg.C :

a) Of Top oil by thermometer :

b) Of winding by resistance :

3.3 Maximum continuous over

loading capacity of the transformer without exceeding the specified winding temperature :

4.0 Tappings 4.1 Type : 4.2 Capacity : 4.3 Range - Steps x % Variation :


4.4 Taps provided on HV/LV Winding : UNIT

TRANSF. STANDBY TRANSF.

HT AUX. TRANSF.

5.0 Insulation Level KVp/KV 5.1 H.V. : 5.2 L.V. : 5.3 H.V. Neutral : 5.4 L.V. Neutral : 6.0 Impedances at Principal Tap

at Rated Frequency and 75 Deg.C winding temperature % :

6.1 Base MVA : 6.2 Impedance : 6.3 Reactance : 6.4 Resistance at 75 Deg.C : 6.5 Zero Sequence Impedance at 75 Deg.C : 6.6 Capacitance of Windings micro farad/phase :

a) H.V. - Earth :

b) L.V. - Earth :

c) H.V. - L.V. : 7.0 Guaranteed Losses at

Principal Tap, Full Load and 75 Deg.C KW :

7.1 No load losses : 7.2 Load losses : 7.3 Cooler losses : 7.4 Tolerance on losses : 8.0 Efficiency at 75 Deg.C and

0.8 Power Factor Lag % : 8.1 At full load :


8.2 At 3/4 full load :

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

8.3 At 1/2 full load : 8.4 Maximum Efficiency : 8.4.1 Load and Power Factor at

which it occurs : 9.0 Regulation at Full Load at 75 Deg.C % : 9.1 At unity power factor : 9.2 At 0.8 power factor lagging : 10.0 No Load Current referred to HV Amps. : 10.1 At 90% rated voltage : 10.2 At 100% rated voltage : 10.3 At 110% rated voltage : 10.4 At 125% rated voltage : 10.5 At 140% rated voltage : 11.0 Approximate Maximum Flux density Web/Sq.m :

11.1 At 90% rated voltage : 11.2 At 100% rated voltage : 11.3 At 110% rated voltage : 11.4 At 125% rated voltage : 11.5 At 140% rated voltage : 12.0 Maximum Current Density Amps/Sq.cm : 12.1 H.V. Winding : 12.2 L.V. Winding : 13.0 Withstand Time without

injury for Sec.


13.1 Three phase dead short- UNIT


.

HT AUX. TRANSF.

circuit at terminal with rated voltage maintained on the other side :

13.2 Single phase short-circuit

at terminal with rated voltage maintained on other side :

14.0 Cooling System 14.1 a) No. x Capacity of

cooling unit furnished :

b) No. of cooling units required for full load operation :

14.2 Each Cooling Unit is

provided with :

a) No. x KW of oil pump motor :

b) No. x KW of fan motor :

c) No. of standby fan : d) No. of standby oil pumps : 14.3 Motors rated for voltage-

phase-frequency : 14.4 Automatic Operation of

cooler pumps and fans provided ? :

14.5 Transformer is capable of

delivering rated output under following conditions : a) Failure of all pumps and fans of one cooling unit :



b) Failure of one complete cooling unit including radiator, fans, pumps etc. :


UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

i) Continuous in % rated, MVA : ii) Rated output for ... min. :

c) Failure of fans and pumps of all the cooler units :



d) Failure of complete cooling system including radiators, fans, pumps, etc. :

i) Continuous in % rated, MVA : ii) Rated output for... min. : 14.6 Schematic Flow Diagram of the Cooling System Furnished ? : 14.7 Oil Pumps

a) Make :

b) Type :

c) Catalogue Furnished : 15.0 Details of Tank 15.1 Material : 15.2 Thickness of sides mm : 15.3 Thickness of bottom mm : 15.4 Thickness of cover mm : 15.5 Tank Designed for :

Vacuum : ...... mm of Hg

Pressure : ...... 16.0 Core 16.1 Type - Core or shell :


16.2 Core material :

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

16.3 Thickness of lamination mm : 16.4 Insulation of lamination : 16.5 Equivalent cross-sectional area: 17.0 Coils 17.1 Type of Coil :

a) H.V. : b) L.V. : 17.2 Conductor Material : 17.3 Insulating Material :

a) H.V. - Turn :

b) L.V. - Turn :

c) L.V. - Earth :

d) H.V. - L.V. : e) H.V. Earth : 18.0 Tap Changer 18.1 Make : 18.2 Type : 18.3 Rated Voltage KV : 18.4 Rated Current Amps. : 18.5 Auxiliary Power KW : 18.6 Time required for one step

change Secs. : 18.7 Rated Voltage Volts :

a) Tap-change motor :


b) Control circuit :

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

18.8 Control :

a) Manual/Local Electrical/ Remote Electrical :

b) Group/Solo :

18.9 Voltage Control

Automatic/Non-automatic : 18.10 Provision for parallel

operation Yes/No :

18.11 Maximum Short Circuit Current withstand capability :

a) Current :

b) Time : 18.12 Loose equipment and provisions for remote control furnished as per

specification ? : 18.13 Local manual operation feasible from

standing height from ground ? : 18.14 Local indicator furnished for :

a) Tap position :

b) Operation counter : 18.15 In case of off-circuit tap changer :

a) Padlocking provided : Yes/No b) Auxiliary switch for interlock provided : Yes/No

c) Safety limit switch provided : Yes/No d) Discrepancy detector provided : Yes/No 18.16 In case of On-load tap changer :

A . Interlocks as per specification provided : Yes/No

B. a) Voltage Regulating relay


provided :

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

i) Make : ii) Type : iii) Sensitivity (Dead band) and nominal value range : iv) Timer range : v) Literature furnished ? :

b) Under voltage Relay : i) Voltage range : ii) Timer range : 19.0 Insulating Oil 19.1 Approximate volume Litre : 19.2 10% excess oil furnished ? : 19.3.1 Oil conforms to : 19.3.2 Details of oil furnished : 19.4 a) Oil preservation system provided ? :

b) Type :

20.0 Bushings H V/LV HVN/LVN 20.1 Make : 20.2 Type : 20.3 Reference Standard : 20.4 Voltage class KV : 20.5 Type of atmosphere : 20.6 Creepage Distance mm : 20.7 Weight :

20.8 Free space required for

bushing removal :


20.9 Test terminals for H.V. bushing provided ? :

UNIT


HT AUX. TRANSF.

20.10 One minute power frequency withstand voltage KV rins : 20.11 Impulse withstand voltage KV peak : 21.0 Minimum Clearance 21.1 Between Phases :

a) In air i) HV mm : ii) LV mm : b) In oil

i) HV mm :

ii) LV mm 21.2 Between Phase & Earth : a) In air


i) HV mm : ii) LV mm : 22.0 Terminal Connections 22.1 H.V. : 22.2 L.V. : 22.3 H.V. Neutral : 22.4 L.V. Neutral : 23.0 Marshalling Box 23.1 Weatherproof, suitable for

outdoor duty : 23.2 Degree of protection :


24.0 Terminal Blocks

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

24.1 Make : 24.2 Type : 24.3 20% spare terminals furnished ? : 25.0 Wiring 25.1 Cable type : 25.2 Voltage grade Volt : 25.3 Conductor Size Sq.mm : Material Cu. : Stranded Yes/No : 26.0 Trip and Alarm Contacts Ratings

220V D.C

240V A.C.

26.1 Voltage Volt : 26.2 Rated Amps. :

Making Current : Breaking Current (Inductive Breaking) : 27.0 Accessories

Each transformer furnished with fittings and accessories as per specification ? Yes/No:

28.0 Detail of Conservator 28.1 Volume of Conservator : 28.2 Volume of oil between the

highest and lowest levels : 29.0 Pressure Release Device a) Minimum pressure the device is set

to operation/rupture KN/Sq.m :


b) Alarm and trip contacts provided :

UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

30.0 Spare Parts

Each transformer furnished with spare parts as per specification :

31.0 Approximate Overall Dimension 31.1 Length mm : 31.2 Breadth mm : 31.3 Height mm : Crane lift (a) for untanking core and coil

assembly (including sling) (b) tank cover in case of Bell type tank mm :

32.0 Approximate Weights 32.1 Core and Coil Kg. : 32.2 Tank cover for Bell type tank Kg. : 32.3 Tank and fittings Kg. : 32.4 Oil Kg. : 32.5 Total Weight Kg : 33.0 Shipping Data 33.1 Weight of the heaviest package Kg. :

33.2 Dimension of the largest

package (L x B x H) mm : 34.0 Tests to be conducted on

each Transformer 34.1 Routine tests as per speci-

fication/relevant standard : 34.2 Tank pressure test on each

transformer :

a) Test Pressure KN/Sq.m:


UNIT


HT AUX. TRANSF.

b) Duration Hours :

c) Permanent deflection : 34.3 Tank vacuum test on each transformer :

a) Vacuum KN/Sq.m :

b) Duration Hours :

c) Permanent deflection : 34.4 Oil leak test on each transformer :

a) Test pressure :

b) Duration :

34.5 Core bolt withstand voltage for 1 minute on each transformer KV : 35.0. NEUTRAL CURRENT TRANSFORMER 35.1 General 35.2 Make : 35.3 Type : 35.4 Reference Standard : 35.5 Use : 35.6 Rating a) C.T. Ratio : b) Class : c) Insulation level : d) Burden : 35.7 Insulation Class a) Temperature rise at rated burden over

top oil temperature Deg.C :


UNIT TRANSF.

STANDBY TRANSF.

HT AUX. TRANSF.

35.8 Characteristics a) Secondary resistance Rct Ohm at 75 Deg.C :

b) Knee point voltage Vk Volt : c) Excitation current at Vk/2 Amps. : 35.9 Dimensions and Weights a) Dimension (L x B x H) mm : b) Weight Kg. : c) Tests As per Standard ? :

Date post:	25-Mar-2018
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VOLUME: IIIC SCHEDULE LOCAL ISOLATING SWITCH...

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