ABB RET 54 Series - Page 65

1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
65
The following values are recommended for the resistor R
ext
in Figure 5.1.11.-1
below:
TCSclose_b
Fig. 5.1.11.-1 Operating principle of the trip-circuit supervision (TCS), without
an external resistor. The TCS blocking switch is set, blocking the
TCS1 when the circuit breaker is open. The terminal numbers are
related to HSPO1.
Operating voltage Uc
Shunt resistor R
ext
48 V DC
1.2 k
, 5 W
60 V DC
5.6 k
, 5 W
110 V DC
22 k
, 5 W
220 V DC
33 k
, 5 W
+
-
Rs
TCS1
BS
TCSSTATE
ALARM
HW
SW
10
11
12
13
TCS
R
int
X4.1
CBPOS_open
TCS blocking