CNO - TI 20201023 SG3400HV-30 and SG3125HV-30 Series P-Q Diagram V40 de 2024

Version 1.0

SG3400HV-30 and SG3125HV-30 Series P-Q Diagram(with overload up to 3781kVA) Technical Information PreliminaryConfidential

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1. Introduction This document describes the P-Q diagram used for SG3125HV-30,SG3400HV-30, SG3125HV-MV-30 ,SG3400HV-MV-30. For SG3125HV-MV-30 and SG3400HV-MV-30, the PQ capacity is the output characteristic of LV side of the transformer.

This document is intended to be used by the specific addressees. No part of this document may be reproduced or distributed in any form or by any means without the prior written permission of Sungrow Power Supply Co., Ltd.

2. P-Q Capability Inverter can support the grid by supplying the reactive power in different ways. The shaded area in the figure below shows the inverter’s P-Q capability.

φ P (kW) Q (kVar) Ind. Cap.2062kVar

3781kVA@PF=0.80

2750kW 2269kVar P=99%Pn Vn 0.9Vn 2475kW 1856kVar 1856kVar P=110%Pn 1.1Vn 3025kW 2062kVar 2269kVar

3437kVA@PF=0.80

3093kVA@PF=0.80

Ambient temperature: 25℃

3781kVA@PF=0.91

0.85Vn

2921kVA@PF=0.80

2337kW P=93.5%Pn 1753kVar 1753kVar

a) P-Q Curve at 25℃

Ambient temperature: 25℃

3781kVA@PF=0.91

0.85Vn

2921kVA@PF=0.80

2337kW P=93.5%Pn 1753kVar 1753kVar

a) P-Q Curve at 25℃ The Pmax=3437kW, Pn=3125kW , Smax=3781kVA at the grid voltage 660Vac and 25℃; The Max. Q is +/-2269 kVar (72.6%), when the power factor is +/-0.8, at the grid voltage 660Vac and 25℃; The Q is +/-2062 kVar (66%), when the power factor is +/-0.8, at the grid voltage 600Vac and 25℃; The Q is +/-1856 kVar (59.4%), when the power factor is +/-0.8, at the grid voltage 540Vac and 25℃; The Q is +/-1753 kVar (56.1%), when the power factor is +/-0.8, at the grid voltage 510Vac and 25℃;Confidential

2 φ P (kW) Q (kVar) Ind. Cap.2062kVar

3781kVA@PF=0.80

2750kW 2269kVar P=99%Pn Vn 0.9Vn 2475kW 1856kVar 1856kVar P=110%Pn 1.1Vn 3025kW 2062kVar 2269kVar

3437kVA@PF=0.80

3093kVA@PF=0.80

Ambient temperature: 45℃

3781kVA@PF=0.91

0.85Vn

2921kVA@PF=0.80

2337kW P=93.5%Pn 1753kVar 1753kVar

b) P-Q Curve at 45℃

Ambient temperature: 45℃

3781kVA@PF=0.91

0.85Vn

2921kVA@PF=0.80

2337kW P=93.5%Pn 1753kVar 1753kVar

b) P-Q Curve at 45℃ The Pmax=3437kW, Pn=3125kW , Smax=3781kVA at the grid voltage 660Vac and 45℃; The Max. Q is +/-2269 kVar (72.6%), when the power factor is +/-0.8, at the grid voltage 660Vac and 45℃; The Q is +/-2062 kVar (66%), when the power factor is +/-0.8, at the grid voltage 600Vac and 45℃; The Q is +/-1856 kVar (59.4%), when the power factor is +/-0.8, at the grid voltage 540Vac and 45℃; The Q is +/-1753 kVar (56.1%), when the power factor is +/-0.8, at the grid voltage 510Vac and 45℃;

φ P (kW) Ind. Cap.1875kVar 2500kW P=90%Pn 0.9Vn 2250kW 1687kVar 1687kVar P=100%Pn 1~1.1Vn 1875kVar

3125kVA@PF=0.80

2812kVA@PF=0.80

Ambient temperature: 50℃

0.85Vn

2656kVA@PF=0.80

2125kW P=85%Pn 1594kVar 1594kVar Q(kVar)

c) P-Q Curve at 50℃ The Pmax=3125kW, Pn=3125kW , Smax=3125kVA at the grid voltage 660Vac and 50℃ ;Confidential

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Q(kVar)

c) P-Q Curve at 50℃ The Pmax=3125kW, Pn=3125kW , Smax=3125kVA at the grid voltage 660Vac and 50℃ ;Confidential

3 The Q is +/-1875kVar(60%), when the power factor is +/-0.8, at the grid voltage range of 600Vac ~660Vac and 50℃; The Q is +/-1687kVvar(54%), when the power factor is +/-0.8, at the grid voltage 540Vac and 50℃ ; The Q is +/-1594kVar(51%), when the power factor is +/-0.8, at the grid voltage 510Vac and 50℃ ;