11.1. Terminal Positions
11.2. Power Terminals
www.west-cs.co.uk
21
11. Wiring instructions
The Thyristor unit could be susceptible to interferences lost by near equipments or by the power supply, for this
reason in accord to the fundamental practices rules is opportune take some precautions:
•
The coil contactor, the relays and other inductive loads must be equipped with opportune RC filter.
• Use shielded bipolar cables for all the input and output signals.
• The signal cables must not be near and parallel to the power cables.
• Local regulations regarding electrical installation should be rigidly observed.
Use 75°C copper (CU) conductor only, wire ranges (AWG), wire terminal type (ZMVV), terminal tightening
torque in the table below.
Power cable torque (suggested)
Type
Connector
Type
Torque Lb-in
(N-m)
Wire Range
mm² (AWG)
MAX Current
Terminals
Wire Terminals UL
Listed (ZMVV)
060
090
120
Screw M6
70.8 (8.0)
16(5)
25(3)
35(2)
150
Fork/Spade Terminal
Copper Tube Crimp.
Lug
150
180
210
Screw M8
141,6 (16.0)
50(0)
70(00)
90(000)
250
Fork/Spade Terminal
Copper Tube Crimp.
Lug
Warning:
Before connecting or disconnecting the unit check that power and control cables
are isolated from voltage sources.
Terminal Description
L1
Line Input Phase 1
T1
Load Output Phase 1
L2
Line Input Phase 2
T2
Load Output Phase 2
L3
Line Input Phase 3
T3
Load Output Phase 3
Cable dimensions of the Command Terminals 0.5 mm² (AWG 18)
Cable dimensions of the Earth (suggested)
16 mm² (AWG 6) up to 120A
25 mm² (AWG 4) up to 210A