Testing The Synchronizing Function - ABB RET670 Installation And Commissioning Manual

Section 13
Verifying settings by secondary injection
13.11.1.1
176
U-Bus1
Test
equipment
U-Bus2
U-Line2
U-Line1
N
IEC05000481 V3 EN
Figure 67: General test connection for a 1½ breaker diameter with one-phase
voltage connected to the line side

Testing the synchronizing function

This section is applicable only if the synchronizing function is included.
The voltage inputs used are:
UP3LN1 UL1, UL2 or UL3 line 1 voltage inputs on the IED
UP3BB1 Bus1 voltage input on the IED
Testing the frequency difference
The frequency difference is in the example set at 0.20 Hz on the local HMI, and the
test should verify that operation is achieved when the FreqDiffMax frequency
difference is lower than 0.20 Hz. The test procedure below will depend on the
settings used.
1. Apply voltages
IED
U3PBB1
U3PBB2
U3PLN2
N
U3PLN1
UMeasure
Ph/N
Ph/Ph
N
IEC05000481-3-en.vsd
Installation and commissioning manual
1MRK 504 088-UEN C