ABB RELION RET670, Commissioning Manual, Page: 244 / 328

ANSI05000481-4-en.vsd
ANSI05000481 V4 EN
Figure 52: General test connection for a breaker-and-a-half diameter with one-
phase voltage connected to the line side
11.10.1.1 Testing the synchronizing function
The voltage inputs used are:
V3PL1 VA, VB or VC line 1 voltage inputs on the IED
V3PBB1 Bus1 voltage input on the IED
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the frequency
difference between bus and line is less than set value of
FreqDiffMax and above set value
of FreqDiffMin . The test procedure below will depend on the settings used. Input
STARTSYN must be activated during the test.
FreqDiffMax = 50.2 Hz
FreqDiffMin = 50.01 Hz
tBreaker = 0.080 s
1. Apply voltages
Section 11
1MRK 504 165-UUS -
Testing functionality by secondary injection
238 Transformer protection RET670 2.2 ANSI
Commissioning manual