Check Of Voltage Differential Trip And Alarm Levels - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
ANSI07000107 V2 EN-US
Figure 40: Connection of the test set to the IED for test of V2 block level
where:
1
2
2. Apply voltage higher than the highest set value of
phase inputs and to one phase of the V2 inputs according to figure 40.
The voltage differential PICKUP signal is set.
3. Decrease slowly the voltage in phase VC of the test set until the PICKUP signal resets.
4. Check V2 blocking level by comparing the voltage level at reset with the set undervoltage
blocking
10.6.5.2

Check of voltage differential trip and alarm levels

Procedure
1. Connect voltages to the IED according to valid connection diagram and figure 41.
Commissioning manual
VA
VB
VC
VN
is three-phase voltage group1 (V1)
is three-phase voltage group2 (V2)
V2Low .
Testing functionality by secondary injection
VA
VB
1
VC
VN
VA
2
VB
VC
ANSI07000107-1-en.vsd
VDTrip , V1Low and V2Low to the V1 three-
Section 10
SEMOD175258-104 v3
173