Technical Data - ABB REL650 series Technical Manual

Section 10
Secondary system supervision
10.3.7
346
TCS_STATE
BLOCK
ANSI11000289 V1 EN
Figure 163: Functional module diagram
Trip circuit supervision generates a current of approximately 1.0 mA
through the supervised circuit. It must be ensured that this current will not
cause a latch up of the controlled object.
To protect the trip circuit supervision circuits in the IED, the output
contacts are provided with parallel transient voltage suppressors. The
breakdown voltage of these suppressors is 400 +/– 20 V DC.
Timer
The binary input BLOCK can be used to block the function. The activation of the BLOCK
input deactivates the ALARM output and resets the internal timer.

Technical data

Table 236: TCSSCBR Technical data
Function
Operate time delay
TCS
status
Timer
0-t
0
Range or value
(0.020 - 300.000) s
1MRK 506 335-UUS A
ALARM
Accuracy
± 0,5% ± 110 ms
Technical manual