ABB REF542plus - Page 71

71
Table 18.1.- 1 Connection table for conventional instrument
transformers (Continued)
9 T5/3
10 T3/1
11 T1/R T1/1
12 T8/1
13 T4/3
14 T2/B T2/2
15 T6/3
16 T7/B T7/2 T7/A
17 T4/B T4/2
18 T2/3
19 T6/B T6/2
20 T7/R T7/3 T7/B
21 T4/R T4/1
22 T2/R T2/1
23 T6/R T6/1
24 T7/1
B: Black wire for voltage transformer.
R: Red wire for voltage transformer.
1: 1 A input for current transformer.
2: Common input for current transformer.
3: 5 A input for current transformer.
Example:
To determine the pins for the analog input module 1VCF750170R0817:
3CTs, 3VTs, 1CTs; used with transformers with 1 A on the secondary
windings.
The following connection must be done:
Analog input 1; the current transformer for phase 1 must be connected on pins
11 and 3 (common).
Analog input 2; the current transformer for phase 2 must be connected on pins
22 and 14 (common).
Analog input 3; the current transformer for phase 3 must be connected on pins
10 and 2 (common).
Analog input 4; the voltage transformer for phase 1 to earth must be
connected on pins 21 and 17.
1MRS755869
Multifunction Protection and Switchgear Control
Unit
Operator's manual
REF542plus