Sungrow SC50HV - DC Fuse and AC Circuit Breaker Requirements

28
Com.1
Com.3
Com.2
Com.4
BAT Input AC Output
PE Cable
9 10 11 12
Fig. 6-1 Connection Cabinet Description
*Image shown here is for reference only. Actual product you receive may differ.
No.
Name
Description
1
Start / Stop button
Start / Stop the PCS.
2
Battery switch
Protective components to safely disconnect
DC side current.
3
Configuration circuit
board
Communication cable connection and
configuration
4
Network Port
Used for EMS communication
5
Battery crimping terminal
Battery input cable access
6
AC crimping terminal
AC output cable access
7
PE terminals
PE cable access
8
AC switch
Protective components to safely disconnect
from AC side.
9
Communication cable
glands
For Communication cable connection
Knockout diameter for COM cable is 28.5mm
10
Battery cable gland
For battery cables connection
Knockout diameter for BAT cable is 75.5mm
11
AC cable gland
For AC cables connection
Knockout diameter for AC cable is 75.5mm
12
PE cable gland
For PE cable connection
6.2 DC fuse and AC circuit breaker requirements
At altitudes <2000m, the specifications for DC fuses and AC circuit breakers are
as follows:
Item
Rated voltage
Rated current
DC fuses
≥1500Vdc
≥150A
AC circuit breakers (SC50HV)
≥400Vac
≥100A
AC circuit breakers (SC65HV)
≥480Vac
AC circuit breakers (SC75HV)
≥600Vac
If the altitude exceeds 2000 meters, the actual withstand current and voltage of
the DC fuse and AC circuit breaker need to meet other parameters besides the