ABB REF601 User Manual

1MDU07212-YN Rev. C Section 4
Protection and Control Function
REF601 / REJ601 37
Application Manual
Figure 8: Application diagram of TCS function
When the circuit breaker is open, TCS measure the voltage across the trip contact
through Rext (external shunt resistance shown in below figure) and trip coil. When
the circuit breaker is close, TCS measure the voltage across the trip contact through
CB internal contact and trip coil. Below table shows the specification for the Rext
for the TCS circuit.
Table 24: TCS functionality specification
Description
Value
Auxiliary
voltage range
48
-
250V AC/DC
Current drain through the supervision circuit
~1.5 mA
Minimum voltage over the TCS contact
20 V AC/DC
Operating voltage Vaux
48 V DC
60 V DC
110 V DC
220 V DC
Recommended shunt resistor R
ext
1.2 kΩ, 5 W
5.6 kΩ, 5 W
22 kΩ, 5 W
33 kΩ, 5 W
Whenever TCS functionality is enabled, it is recommended to connect R
ext
.
Otherwise, TCS sees a faulty trip circuit in open circuit breaker position.
Table 25: TCS functionality parameters and selection range
Name
Value (Range)
Unit
Step
Default
Description
Operate delay time
1…10
Sec
1
1 Settable
10…300
Sec
1
Reset delay time
0.5
Sec
---
0.5
Fixed

ABB REF601 Specifications

General

Brand	ABB
Model	REF601
Category	Protection Device
Language	English