DEEP SEA ELECTRONICS DSE4520 - Generator Current Transformers; CT Connections

Installation – Terminal Description
29
4.1.5 GENEATOR CURRENT TRANSFORMERS
NOTE: Current Sensing (terminals 29 to 32) is not fitted to the DSE45xx-01 variant.
WARNING!: Do not disconnect this plug when the CTs are carrying current.
Disconnection will 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.
Pin
No
Description
Cable
Size
Notes
29 CT Secondary for L1
2.5mm²
AWG 13
Connect to s1 secondary of L1 monitoring CT
30 CT Secondary for L2
2.5mm²
AWG 13
Connect to s1 secondary of L2 monitoring CT
31 CT Secondary for L3
2.5mm²
AWG 13
Connect to s1 secondary of L3 monitoring CT
32 CT Common
2.5mm²
AWG 13
4.1.5.1 CT CONNECTIONS
p1, k or K is the primary of the CT that ‘points’ towards the GENERATOR
p2, l or L is the primary of the CT that ‘points’ towards the Load
s1 is the secondary of the CT that connects to the DSE Module’s input for the CT measuring
s2 is the secondary of the CT that should be commoned with the s2 connections of all the other CTs
and connected to the CT common terminal of the module.
TO GENERATOR
TO LOAD
POLARITY OF CT PRIMARY
labelled as p1,
k or K
labelled as p2,
l or L