Sungrow MVS6250 - Cable Lug Tightening Torques

System Manual 11 Parameters
57
Storage ambient
temperature*
-35°C~+70°C
Relative humidity
0% to 95%(no-condensing)
Max. operating altitude
1000m(standard)/>1000m(optional)
Degree of protection
IP54
*Parameters may vary subject to specific project requirement
Table 11-1 Correspondence between nominal current and short circuit breaking current
Manufacturer
Nominal
voltage
Frequency
Nominal current
Short circuit
breaking current
ABB
24kV
50Hz
630A
16kA
60Hz
600A
36kV
50Hz
630A
20kA
60Hz
600A
Siemens
24kV
50Hz
630A
20kA
60Hz
Ormazabal
36kV
50Hz
630A
20kA
60Hz
11.2 Tightening Torques
Tighten the cable with proper torque shown below to prevent the poor contact, high contact
resistance, or fire caused by the looseness of cable lugs:
Screw
Torque (N·m)
Screw
Torque (N·m)
M3
0.7~1
M8
18~23
M4
1.8~2.4
M10
34~40
M5
4~4.8
M12
60~70
M6
7~8
M16
119~140
Secure the cable in proper place to reduce the pressure of cable lug.