Winco DSE7300 Series - Manual (Page 31)

DSE Model 7000 Series Control & Instrumentation System Operators Manual
Part No. 057-074 7000 Series OPERATING MANUAL ISSUE 5 15/10/2009 ADM 31
Connection of CT s1 terminal
PIN
No
DESCRIPTION CABLE
SIZE
NOTES
51 CT Secondary for Gen L1
2.5mm²
AWG 13
Connect to s1 secondary of L1 monitoring CT
52 CT Secondary for Gen L2
2.5mm²
AWG 13
Connect to s1 secondary of L2 monitoring CT
53 CT Secondary for Gen L3
2.5mm²
AWG 13
Connect to s1 secondary of L3 monitoring CT
Connection to terminals 54 & 55 (DSE7200 SERIES)
Pin
No
Description CABLE
SIZE
54 DO NOT CONNECT
55 Common for CTs connected to L1,L2,L3 (s2)
2.5mm²
AWG 13
NOTE:- Terminals 56 to 59 are not fitted to the 7200 / 7300 series controller.
NOTE:- Take care to ensure correct polarity of the CT primary as shown overleaf. If in doubt, check
with the CT supplier.
Connection to terminals 54 & 55 (DSE7300 SERIES)
The function of terminals 54 and 55 CHANGES depending upon what kind of earth fault protection (if any) is being used:
Topology Pin
No
Description CABLE
SIZE
No earth fault measuring
54 DO NOT CONNECT
55
Connect to s2 of the CTs connected to
L1,L2,L3,N 2.5mm²
AWG 13
Restricted earth fault measuring
54
Connect to s2 of the CTs connected to
L1,L2,L3,N 2.5mm²
AWG 13
55
Connect to s1 of the CT on the neutral
conductor 2.5mm²
AWG 13
Un-restricted earth fault measuring
(Earth fault CT is fitted in the neutral to earth
link)
54
Connect to s1 of the CT on the neutral to
earth conductor.
55
Connect to s2 of the CT on the neutral to
earth link.
Also connect to the s2 of CTs connected
to L1, L2, L3. 2.5mm²
AWG 13
NOTE:- Terminals 56 to 59 are not fitted to the 7200 / 7300 series controller.