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
Once activated, the timer runs until the set value
tDelay
is elapsed. The time
characteristic is according to DT. When the operation timer has reached the maximum
time value, the
ALARM
output is activated. If a drop-off situation occurs during the
operate time up counting, the reset timer is activated.
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.
11.2.7
Technical data
Table 207:
TCSSCBR Technical data
Function
Range or value
Accuracy
Operate time delay
(0.020 - 300.000) s
± 0,5% ± 110 ms
Section 11
1MRK 502 048-UEN A
Secondary system supervision
320
Technical manual
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