System Manual
6 Electrical Installation
31
6.2.2
Aluminum Wire Connection
When the aluminum wire is selected, a copper-aluminum bi-metallic lug is needed as
shown below:
Fig. 6-2
Albronze filter connection
A
B
C
D
E
F
Copper Bus
copper-aluminum bi-metallic lug
Bolt
Spring washer
Flat washer
Nut
Aluminum cable connections for the transformer please refer to transformer
manual.
6.3
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 size
Torque(N.m)
Torque(lbf.inch)
M3
0.7~1
6.195~8.85
M4
1.8~2.4
15.93~21.24
M5
4~4.8
35.4~42.48
M6
7~8
61.95~70.8
M8
18~23
159.3~203.55
M10
34~40
300.9~354
M12
60~70
531~619.5
M16
119~140
1053.15~1239
6.4
Preparation before Electrical Connections
Cables inside the MV Station have been connected before delivery. The electrical
connection in this chapter is mainly the power cable, communication cable and power
supply cable related to the MV Station.
