No. Information Type of
Informa-
tion
Comments
167 Fail U balance OUT Failure: Voltage Balance
171 Fail Ph. Seq. OUT Failure: Phase Sequence
175 Fail Ph. Seq. I OUT Failure: Phase Sequence Current
176 Fail Ph. Seq. U OUT Failure: Phase Sequence Voltage
30110 Fail balan. IM1 OUT Fail.: Current Balance meas. location 1
30111 Fail balan. IM2 OUT Fail.: Current Balance meas. location 2
30112 Fail balan. IM3 OUT Fail.: Current Balance meas. location 3
30113 Fail balan. IM4 OUT Fail.: Current Balance meas. location 4
30114 Fail balan. IM5 OUT Fail.: Current Balance meas. location 5
30115 FailPh.Seq IM1 OUT Failure: Phase Sequence I meas. loc. 1
30116 FailPh.Seq IM2 OUT Failure: Phase Sequence I meas. loc. 2
30117 FailPh.Seq IM3 OUT Failure: Phase Sequence I meas. loc. 3
30118 FailPh.Seq IM4 OUT Failure: Phase Sequence I meas. loc. 4
30119 FailPh.Seq IM5 OUT Failure: Phase Sequence I meas. loc. 5
Trip Circuit Supervision
The differential protection relay 7UT6x is equipped with an integrated trip circuit supervision. Depending on
the number of binary inputs with isolated control inputs that are still available, a choice can be made between
monitoring with one or two binary inputs. If the masking of the required binary inputs does not match the
selected monitoring type, then a message to this effect is generated (
TripC ProgFail
).
Functional Description
Supervision with Two Binary Inputs
If two binary inputs are used, they are connected according to Figure 2-118, one in parallel to the assigned
command relay contact of the protection and the other parallel to the circuit breaker auxiliary contact.
A precondition for the use of the trip circuit supervision is that the control voltage for the circuit breaker is
higher than the total of the minimum voltages drops at the two binary inputs (U
Ctr
> 2 · U
BImin
). Since at least
19 V are needed for each binary input, the supervision function can only be used with a system control
voltage of more than 38 V.
[ausloeselogik-2be-bsp-ausloesekreis1-121102-st, 1, en_GB]
Figure 2-118 Principle of trip circuit supervision using two binary inputs
2.19.2
2.19.2.1
Functions
2.19 Monitoring Functions
SIPROTEC 4, 7UT6x, Manual 259
C53000-G1176-C230-5, Edition 09.2016
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