Electrical cabinet layout

Internal components for B1 electrical cabinet

NO	Name	Quantity
1	MPPT	2
2	PCS	1
3	STS	1
4	EMS	1
5	Main circuit switch box	1
6	Control power box	1

Technical parameters for B1 electrical cabinet

B1 version electrical cabinet parameters

Electrical Parameters
MPPT Maximum Allowable Input Voltage	700 V
MPPT Maximum Input Power	100 kW × 2 or 50 kW × 2
PCS DC Input Voltage	615–950 V (3W + PE) / 650–950 V (3W + N + PE)
AC Rated Output Voltage	230/400 V
Rated Output Power	125 kW × N (Number of PCS Units)
Protection
DC Input Protection	Dual Protection: DC-side Fuse + Fast Circuit Breaker
AC Output Protection	Circuit Breaker
General Parameters
Dimensions (mm)	W846 ×D1368 ×H2205
Weight	640 ± 20 kg
Protection Rating	Electrical Compartment IPX4
Operating Temperature	-25℃ to 55℃ (Derating above 45℃)
Hight(m)	≤3000 m (Derating above 2000 m)
Cooling Method	Air Cooling
Communication
Communication Interface	RS485 / Ethernet
Communication Protocol	IEC 61850 / Modbus-RTU / Modbus-TCP

B1 electrical cabinet architecture diagram

Note: QF2 serves as the bypass circuit breaker (normally in the open position),designed to disconnect QF1/QF3 when abnormalities occur in the STS or PCS, then close the QF2 bypass circuit breaker to provide power to the load.