Hitachi Relion 670 Series Commissioning Manual page 192

Section 11
Testing functionality by secondary injection
ANSI07000107 V2 EN-US
Figure 48:
where:
1
2
2. Apply voltage higher than the highest set value of VDTrip, V1Low and V2Low to the V1 three-phase
inputs and to one phase of the V2 inputs according to figure 48.
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
V2Low.
11.6.5.3 Check of voltage differential trip and alarm levels
Procedure
1. Connect voltages to the IED according to valid connection diagram and figure 49.
186
VA
VB
VC
VN
Connection of the test set to the IED for test of V2 block level
is three-phase voltage group1 (V1)
is three-phase voltage group2 (V2)
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VA
VB
1
VC
VN
VA
2
VB
VC
ANSI07000107-1-en.vsd
Line distance protection REL670
1MRK506371-UUS Rev. M
SEMOD175258-104 v3
Commissioning manual