TECHNICAL CHARACTERISTICS HEM

39HEM

TECHNICAL CHARACTERISTICS HEM

REFERENCE FS3510MOUTPUT AC Output Power (kVA/kW) @50°C [1] 3510

AC Output Power (kVA/kW) @40°C [1] 3630Operating Grid Voltage (VAC) 34.5kV ±10%Operating Grid Frequency (Hz) 60HzCurrent Harmonic Distortion (THDi) < 3% per IEEE519Power Factor (cosine phi) [3] 0.5 leading … 0.5 lagging adjustable / Reactive Power injection at night

INPUT MPPt @full power (VDC) 934V-1310VMaximum DC voltage 1500VNumber of PV inputs [2] Up to 36Number of Freemaq DC/DC inputs [4] Up to 6Max. DC continuous current (A) [4] 3970Max. DC short circuit current (A) [4] 6000

EFFICIENCY & AUXILIARY SUPPLY Efficiency (Max) (η) 97.80% including MV transformerCEC (η) 97.51% including MV transformerMax. Power Consumption (KVA) 20

CABINET Dimensions [WxDxH] (ft) 21.7 x 7 x 7Dimensions [WxDxH] (m) 6.6 x 2.2 x 2.2Weight (lb) 30865Weight (kg) 14000Type of ventilation Forced air cooling

ENVIRONMENT Degree of protection NEMA 3RPermissible Ambient Temperature -35°C to +60°C / >50°C Active Power deratingRelative Humidity 4% to 100% non condensingMax. Altitude (above sea level) [5] 2000mNoise level [6] < 79 dBA

CONTROL INTERFACE Communication protocol Modbus TCPPlant Controller Communication OptionalKeyed ON/OFF switch Standard

PROTECTIONS Ground Fault Protection GFDI and Isolation monitoring device General AC Protection MV Switchgear (configurable)General DC Protection FusesOvervoltage Protection AC, DC Inverter and auxiliary supply type 2

CERTIFICATIONS Safety UL 1741, CSA 22.2 No.107.1-16Compliance NEC 2017Utility interconnect IEEE 1547.1-2005 / UL 1741 SA-Feb. 2018

[1] Values at 1.00•Vac nom and cos Ф= 1. Consult Power Electronics for derating curves.[2] Consult Power Electronics for other configurations.[3] Consult P-Q charts available: Q(kVAr)=√(S(kVA)2-P(kW)2).

[4] Consult Power Electronics for Freemaq DC/DC connection configurations.[5] Consult Power Electronics for altitudes above 1000m.[6] Readings taken 1 meter from the back of the unit.

POWER ELECTRONICS



INPUT MPPt @full power (VDC) 913V-1310VMaximum DC voltage 1500VNumber of PV inputs [2] Up to 36 Number of Freemaq DC/DC inputs [4] Up to 6Max. DC continuous current (A) [4] 3970Max. DC short circuit current (A) [4] 6000










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Transformer Information | HEM/PCSM | Rev 3 Page | 1

Application Note

HEM & PCSM

MV Transformer Information Rev 03

Power Electronics España S.L.

Polígono Pla de Carrases B.

CV-35 Ctra. Salida 30

46160 Lliria, Valencia, SPAIN

Sales: (+34) 96 136 65 57

Fax: (+34) 96 131 82 01

Email: [email protected]

Website: www.power-electronics.com

Power Electronics, USA

1510 N Hobson St

Gilbert, AZ 85233

Sales: +1 (602) 354-4890

Email: [email protected]


Revision Table

Version Date Author Update

1.0 Nov 02 2018 S Shah

2.0 June 14 2019 S Castagno Updated for HEM v2.0

models

3.0 Nov 9 2020 S Castagno Included PCSM


1. Purpose:

The purpose of this document is to provide technical information on the MV Transformer (MVT)

integrated into the Freesun HEM and Freemaq PCSM series inverters. The information is typical of

the transformer manufacture’s data. The scope of this document is for following models:

HEM Model Numbers: PCSM Model Numbers*: - FS3190M - FS3270M - FS3350M - FS3430M - FS3510M

- FP3190Mx - FP3270Mx - FP3350Mx - FP3430Mx - FP3510Mx (*“x” – no. of DC inputs for multi-input PCSM models)

2. Overview:

The transformer is factory assembled into the inverter as part of the complete turn-key

HEM/PCSM platform. The transformer protection is provided by an integrated MV switchgear at

the 34.5kV terminals. A single transformer design is used for all HEM/PCSM models, tapped for

each inverter LV configuration shown in section 6.

3. Transformer General Datasheet:


4. Short Circuit Information

Short circuit reactance: 8.5% (Typ.)

Short circuit resistance: 0.78% (Typ.)

X/R: 10.8 (Typ.)

Zero Sequence Impedance (R & X): >9999 pu

5. Routine Testing (sample can be provided upon request)

Standard: C57.12.01and C57.12.91

Turns ratio and phase displacement

AC voltage withstand

Induced AC Voltage

Partial Discharge

No load loss & current measurement

Winding resistances

Load loss and SC impedances

6. Transformer Taps:

6.1. Tap Configurations:

The transformer contains a total of 9 taps that will be factory configured by Power Electronics for

each inverter’s nominal LV voltage and 34.5kV at the HV terminals. The following tables show

the nominal tap steps and MVT power capacity per inverter model. The taps are set by

terminating jumpers across tap terminal per MVT nameplate.

6.2. MVT capacity in FS3190M/FP3190Mx – 600V

LV (Vac) HV (Vac) Capacity (kVA)

(50C/40C)

600V +5.0% 3190/3300

600V +2.5% 3190/3300

600V 34.5k nom 3190/3300

600V -2.5% 3190/3300

600V -4.8% 3190/3300


LV (Vac) HV (Vac) Capacity (kVA)

(50C/40C)

615V +5.1% 3270/3380

615V +2.5% 3270/3380

615V 34.5k nom 3270/3380

615V -2.4% 3270/3380

615V -4.7% 3270/3380



LV (Vac) HV (Vac) Capacity (kVA) (50C/40C)

630V +5.1% 3350/3465

630V +2.5% 3350/3465

630V 34.5k nom 3350/3465

630V -2.3% 3350/3465

630V -4.5% 3350/3465



645V +4.9% 3430/3550

645V +2.4% 3430/3550

645V 34.5k nom 3430/3550

645V -2.3% 3430/3550

645V -4.7% 3430/3550



660V +4.7% 3510/3630

660V +2.3% 3510/3630

660V 34.5k nom 3510/3630

660V -2.5% 3510/3630

660V -5% 3510/3630

Shaping the future. Once again.

Delivering true valueHigher power, lower LCOE

Since its founding 20 years ago, LONGi has been deeply involved in the photovoltaics industry and has continuously promoted its breakthrough innovations.

Every LONGi’s successive technological innovation had brought about an industrial transformation.

LONGi believes that the value of every innovation lies in real world applications. With scale, volume production of the product delivers true value. LONGi is committed to delivering maximum value for our global partners and customers.

Propelling thetransformation

02

LONGi roadmap industry benchmarkFrom standard monocr ystalline to monocr ystalline PERC to P-Type PERC bifacial technology and M6 (166mm) size wafer with gallium-doped technology, ever y LONGi’s new product spearheads the transformation of the photovoltaics industr y and becomes a new benchmark for the entire industr y.

Global Monocrystalline market share up to

Global market share of crystalline solar product

Mono Poly

2015 2016 2017 2018 2019 2020（estimate）

18%

82% 77%73%

44%

32%

10%

23% 27%

56%

90%

68%

90%

－

03

Leading LCOE, realizing the value of technological innovation in volume production

Monofacial application ($ cent/kWh)Bifacial application ($ cent/kWh)

1.5GW

2015

5.8

5GW

2016

5.1

6.5GW

2017

4.814.45

8.8GW

2018

4.404.07

14GWLONGi capacity

2019

3.963.67

Bifacial power generation technology

MONOSILICON

Mono technology

PERC

Mono PERC technology M6 larger size wafer

Data source: ITRPV.*LCOE calculation: 1500kWh/kWp first-year power generation for monofacial modules (bifacial gain: 8%)；80% debt with 4% interest rate; 2% discount rate; 20-year straight line depreciation.

Changing the industr y status quo with monocr ystalline technology.

Brings forth the onset of the low attenuation and high efficiency

module.Opens more application scenarios.

Leads the industry into a new era of 450W+ ultra-high power.

－

-32%LCOE

LONGi insists on research-based methods to achieve industr y breakthroughs and quickly promote the commercialization of ever y innovation.

04

05

06

Product specifications 540W

Power output Module efficiency540W LR5-72HBD

● M10 wafer with gallium-doped technology

● P-PERC cell technology

● Half-cut cell with multi-busbars

● 72-cell format

● Voc: 49.5V

● Imp: 13.0A

● Power temperature coefficient: -0.35%/℃

● Weight: 32.3kg

21%+2256mm

1133mm

Lowest LCOE solutionsfor ultra-large power plants

07

Lower logistics cost

Improved system capacity ratio

Reduce equipment & material cost

Saves labor cost

Power generationOptimizes use of containers spacein transport.Logistics costs 10% lower than mainstream products.

Matched with string inverters, cost per watt on the AC side is reduced.

Hi-MO 5 enables higher power per string, significantly reducing racking, pile foundation, cable, combiner box and land cost.

Reduce installation costs for modules, cables, etc.

● High module power and excellent power generation performance

under low light. ● Low power temperature coefficient.● Reliable bifacial module power. generation gain.● Industry-leading power warranty.

Lowest LCOE solutions for ultra-large power plants

08

BOS analysis : scenario 01Location: Jiuquan, China. 100MWdc solar plant with 1500V central inverters, each standard solar subarray with a 3125kVA transformer, and a DC-to-AC ratio of 1.2 for different types of solar modules.

*Considering difference in power degradation warranty but not the difference in bifacial energy yield.

BOS

LCOE

-20.9%

-5.3%

-4.1%

BOS analysis (F ixed-t i l t racking with 4L solar modules -21℃ for design lowest temperature, 110kV uti l i ty gr id voltage)

BOS

Mounting system

Combiner box

Cable

Labor

Land

Total BOS

158.75, 72C

410W

27

11.07kW

Reference

Reference

Reference

Reference

Reference

Reference

Reference

163.75, 78C

465W

25

11.625kW

-3.1%

-6.7%

+0.5%

-8.66%

-2.8%

-1.2%

-0.6%

210, 50C

495W

26

12.87kW

-6.0%

-13.4%

-7.2%

-13.91%

-3.6%

-2.6%

-1.0%

72C

540W

27

14.58kW

-8.1%

-26.8%

-9.3%

-20.9%

-5.3%

-4.1%

-2.9%

BoS

LCOE

Labor cost

Land cost

BOS cost

Product

Power

No. of Module / String

Power / String

-2.9%

09

BOS

BoS

LCOE

163.75, 78C

465W

28

13.02W

Reference

Reference

Reference

Reference

Reference

Reference

Reference

210, 50C

495W

29

14.355kW

0.5%

9.0%

-11.2%

-5.2%

-1.1%

-1.0%

-0.5%

72C

540W

30

16.2kW

5.7%

-18.2%

-18.4%

-10.6%

-4.9%

-2.9%

-2.4%

-10.6%

-2.9%

-4.9%

BOS analysis : scenario 02Location: Qatar, Middle East. 100MWdc solar plant with 1500V central inverters, each standard solar subarray with a 6250kVA transformer, and a DC-to-AC ratio of 1.06 for different types of solar modules.

BOS

LCOE

Labor cost

Land cost

BOS cost

BOS analysis (Horizontal s ingle-axis tracker with 2P solar modules,

9.8℃ for design lowest temperature, 132kV uti l i ty gr id voltage).

Mounting system

Combiner box

Cable

Labor

Land

Total BOS

Product

Power

No. of Module / String

Power / String

-2.4%*Considering difference in power degradation warranty but not the difference in bifacial energy yield.

10

Outstanding designReliable real world applications

11

Smart soldering Improved packing density, reliability and conversion efficiency

2/3Cell gapreduction

Cell stressreduction

Gain in moduleefficiency20% 0.3%

normal gap 2.0mm gap

micro-gap 0.6mm gapCell

Integratedsegmented ribbon

Cell

Round ribbon

LONGi's smart soldering technology uses integrated segmented ribbons. The triangular section maximizes light capturing while the flat section reliably connects cells with reduced gap. Smart soldering technology reduces the tensile stress of the cell by 20%, enabling higher reliability.

12

100%

80%0 1 20 25 30 year10

Leading power warranty

-0.45%Linear annual degradation

after the 1st year

98%

84.95%

0.45% / year0.55% / year

84.8%

87.2%

1st year degradation

≤2%

Gallium-doped technology P-type module with lowest LIDLONGi products use gallium-doped PERC cells.Better LID performance with stable, long-term power generation.

Bifacial module Monofacial module

13

5400/2400 Pa

Crossbeam

Crossbeam

Installation methoddouble glass bifacial module

Front/rear side loading

Double-glass with frameThe strongest bifacial moduleHi-MO 5 adopts bifacial double-glass with frame which provides exceptional strength for higher load capacity.Qualified for 5400Pa static load on the front when there is no cross-beam on the back of the module (as shown in the figure).Avoids shading loss due to cross-beam at the back of the module.

14

The maximum input current range of.The new-generation of inverters.

15%Bifacial gain

13A

15A

Hi-MO 5 operating current（with bifacial impp gain）.

Hi-MO 5 operating current .

1P Horizontal single axis tracker

2P Horizontal single axis tracker

Optimized electrical parametersFully compatible with invertersThe operating current of LONGi Hi-MO 5 module is about 13A.Including bifacial gain, the operating current remains within the maximum input current range of advanced inverters, hence there is no power generation loss.

Optimized module sizePerfectly matched with tracking systemsA Hi-MO 5 module length is about 2.25 meters.Compatible with mainstream 1P and 2P horizontal single axis tracking system.Bifacial module + tracking system can achieve the lowest LCOE in low latitude areas.

15

* Sort in alphabetical order.

Adani Group Corporate Brochure

We embrace innovationswith our global customersWe embrace innovationswith our global customersLONGi partners with global customers to build demonstration power plants around the world to jointly prove the superior value of Hi-MO 5 system solutions.

LONGi partners with global customers to build demonstration power plants around the world to jointly prove the superior value of Hi-MO 5 system solutions.

16

1.50GW12.0GW

Global capacity13.5GW

Once again, we take the lead in volume productionLONGi believes that the core value of innovation lies in real world application, and volume production of the technology delivers visible value. LONGi is committed to creating the maximum value for our global partners and customers.

（Except U.S. market）Global capacity U.S. market

2021 Q12020 Q3 for

17

Most cost-effectivemainstream product

72c

Floating power station

C&I rooftop

Large ground power station

60c

Best for rooftopDG projects

Residential rooftop

Optimal choicefor ultra-largepower plants

Ultra-large power station

66c/72c

Optimal choicefor ultra-largepower plants

Ultra-large power station

66c/72c

LONGi product portfolioHi-MO 5 extends the Hi-MO series of LONGi’s high performance module products. Concurrently available with Hi-MO 4, LONGi’s product portfolio is suited for a wide range of photovoltaic applications.

C&I rooftop

18

en.longi-solar.comLONGi Solar. All rights reserved.

NEXTracker.com | Tel: +1 510.270.2500 | 6200 Paseo Padre Pkwy | Fremont, CA 94555

Nextracker, Inc.

6200 Paseo Padre Parkway

Fremont, CA 94555

U.S.A

September 23rd, 2020

Regarding: Tracker Noise Levels

Attention: To Whom it May Concern,

The below information is in regard to NEXTracker’s Horizon Single Axis Tracker motor noise levels. Each of the Horizon tracker rows are independently powered by a 24V 1.5A brushless DV motor. The motors are essentially inaudible relative to the background noise.

The motor noise will be ~40db @ 10ft, or ~20db @ 100ft when the motor is running. The motor runs for 5-10 seconds every 1-2 minutes.

Test condition Motor speed Distance

Noise level

Test 1 No load 5.2RPM 0.3 meter 59.7dB

Test 2 No load 5.2RPM 1 meter 55.5dB

Test 3 Full load (120Nm) 4.2RPM 0.3 meter 74.5dB

Test 4 Full load (120Nm) 4.2RPM 1 meter 69.6dB

Kind Regards,

Bill Elwell

Director, Sales

m +1 415.328.7143

[email protected]

………………………………………………. NEXTracker.com

On-Site Acoustic Testing, LLC PO Box 145 Pawlet, VT 05761 USA 1-800-665-0080 Toll Free 1-802-233-8700 Main Office www.os-at.com

June 2019 - Sound Pressure Focus - P.E. Stephen Giguere Engineering Director Power Electronics USA Boston, MA Cell 1-508-479-1082 Office 1-602-354-4890 [email protected] www.power-electronics.com

RESULTS OF TESTING Noise Emissions Testing of Power Electronics HEM Inverter

On-Site Acoustic Testing, LLC is pleased to submit this report for services to support Power Electronics.

Scope of work

Frequency analysis (1/3rd octave band)

Total Sound Pressure

ASTM/ANSI/ ISO Specifications for testing protocols to be conducted

S1.4 – ANSI Standards for Sound Level Meters

ASTM E1124 – Standard Test Method for Field Measurement of SPL

ANSI/AHRI S – Standard 230 Sound Intensity Procedures

ANSI/ARHI Standard 575 Method of Measuring Machinery Sound Within an Equipment Space

ANSI/ASA S12.54 / ISO 3744 Acoustics - Determination of sound power levels and sound energy levels of noise

sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane

TESTING SERVICE

Testing equipment

Bruel & Kjaer 2270 Generation 4 analyzer running BZ-7223 (Frequency Analysis) software (ANSI Type 1 precision)

Bruel & Kjaer 4231 calibration instrument

http://www.os-at.com/

http://www.power-electronics.com/

Power Electronics Noise Emissions Testing HEM Inverter

On-Site Acoustic Testing, LLC 2

Project Deliverables

The following information is contained in this testing report:

Deliverable Description

Noise Level Measurements Noise level in dBA, dBC and 1/3 octave bands

Testing was conducted in Ft. Pierce, Florida at the Nextera Interstate PV site by Richard Alan Salz – CEO of On-Site

Acoustic Testing, LLC and Erika Ishkanian – Project Manager of On-Site Acoustic Testing, LLC

One HEM Inverter (serial number 30126792) was tested in an outdoor location.

The HEM Inverter was operation under typical (daylight) conditions.

The HEM Inverter was measured on front, back, right, left, and top measurement surfaces.

Individual measurements showing the sound pressure (with associated 1/3 octave band analysis) are shown below for

each measurement taken.



Sound Pressure Summary of all Measurements



Sound Pressure – All Measurements





















































































Summary of Results

Measurement Surface Total Sound Pressure - dBA

Front 80.5

Left 78.9

Back 80.5

Right 69.8

Top 69.9

Please feel free to contact us for any further information concerning the testing that was performed, or this report.

Best Regards,

Richard Salz – CEO

On-Site Acoustic Testing, LLC

Date post:	25-Mar-2022
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TECHNICAL CHARACTERISTICS HEM

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