ABB RELION RET670, Installation And Commissioning Manual

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A secondary injection test set with the possibility to alter the phase angle by
regulation of the resistive and reactive components is needed. The test set must also
be able to generate different frequencies on different outputs.
The description below applies for a system with a nominal
frequency of 50 Hz but can be directly transferred to 60 Hz.
SESRSYN can be set to use different phases, phase to earth or
phase to phase. Use the set voltages instead of what is indicated below.
Figure 66 shows the general test connection principle, which can be used during
testing. This description describes the test of the version intended for one bay.
Figure 67 shows the general test connection for a 1½ breaker diameter with one-
phase voltage connected to the line side.
Test
equipment
UMeasure
Ph/N
Ph/Ph
IEC05000480-2-en.vsd
U-Bus
U-Line
N
IED
U-Bus
N
UL1
UL2
UL3
N
Input Phase
L1,L2,L3
L12,L23,L31
IEC05000480 V2 EN
Figure 66: General test connection with three-phase voltage connected to the
line side
1MRK 504 088-UEN C
Section 13
Verifying settings by secondary injection
175
Installation and commissioning manual