Sungrow SC50HV - Connection Procedure

31
No.
Description
Remark
B
Length of insulation to be
stripped off
Refer to Fig. 6-2Crimping the lugs
C
Insulation layer
-
D
Cross section of AC
cables
Range: 35mm
2
~70 mm
2
/ 4AWG~4/0AWG

If the aluminum cable is selected, in order to ensure a reliable electrical
connection, use the copper and aluminum conversion terminal to avoid direct
contact between the AC copper bar and the aluminum cable.
Aluminum cable
Conversion terminal
Directly connecting the aluminum cable to the copper bar will cause
abnormal operation or even device damage.
6.4.3 Connection Procedure
High voltage inside the PCS!
Ensure all cables are voltage-free before electrical connection.
Do not connect the AC circuit breaker until all PCS electrical
connections are completed.
Install an AC circuit breaker (recommended specification 125A/690V)
between the PCS and the AC side.
Step 1 Disconnect AC circuit breaker to prevent it from inadvertently
reconnecting.
Step 2 Loosen the six hexagon socket crews（M6×16） on the lower
connection cabinet.