Installation
057-233 ISSUE: 1 Page 30 of 90
3.1.6 S1 VOLTAGE SENSING
NOTE: The above table describes connections to a three phase, four wire alternator. For
alternative wiring topologies, please see the ALTERNATIVE AC TOPOLOGIES section of this
manual.
Size
Notes
38 S1 L1 (R) voltage monitoring
1.0 mm²
AWG 18
Connect to S1 L1 (R) incoming supply (AC)
(Recommend 2A fuse)
39 S1 L2 (S) voltage monitoring
1.0 mm²
AWG 18
Connect to S1 L1 (S) incoming supply (AC)
(Recommend 2A fuse)
40 S1 L3 (T) voltage monitoring
1.0 mm²
AWG 18
Connect to S1 L1 (T) incoming supply (AC)
(Recommend 2A fuse)
41 S1 Neutral (N) input
1.0 mm²
AWG 18
Connect to S1 N incoming supply (AC)
3.1.7 LOAD CURRENT TRANSFORMERS
WARNING!: Do not disconnect this plug when the CTs are carrying current.
Disconnection does open circuit the secondary of the C.T.’s and dangerous voltages may then
develop. Always ensure the CTs are not carrying current and the CTs are short circuit
connected before making or breaking connections to the module.
NOTE: The module has a burden of 0.5VA on the CT. Ensure the CT is rated for the burden
of the controller, the cable length being used and any other equipment sharing the CT. If in
doubt, consult your CT supplier.
Size
Notes
42 CT Secondary for Load L1
2.5 mm²
AWG 13
Connect to s1 secondary of L1 monitoring CT
43 CT Secondary for Load L2
2.5 mm²
AWG 13
Connect to s1 secondary of L2 monitoring CT
44 CT Secondary for Load L3
2.5 mm²
AWG 13
Connect to s1 secondary of L3 monitoring CT
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