ABB REQ650 1.3 IEC, Commissioning Manual

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U-Bus1
U-Line1
N
Test
equipment
IED
U-Bus1
N
IEC11000273-2-en.vsd
N
UMeasure
Ph/N
Ph/Ph
U-Bus2
U-Line2
U-Bus2
U-Line2
U-Line1
IEC11000273 V2 EN-US
Figure 14: General test connection for a 1½ breaker diameter with one-phase voltage
connected to the line side
7.7.1.1 Testing the synchronizing function
M2377-21 v6
This section is applicable only if the synchronizing function is included.
The voltage inputs used are:
U-Line UL1, UL2 or UL3 line 1 voltage inputs on the IED
U-Bus Bus voltage input on the IED
Testing the frequency difference
M2377-116 v7
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. Input STARTSYN must be
activated during the test.
1. Apply voltages
1.1. U-Line = 100%
GblBaseSelLine and f-Line = 50.0 Hz
1.2. U-Bus = 100%
GblBaseSelBus and f-Bus = 50.2Hz
2. Check that a closing pulse is submitted at a closing angle less than 2 degrees from phase
equality. Modern test sets will evaluate this automatically.
3. Repeat with
3.1. U-Bus = 80%
GblBaseSelBus and f-Bus = 50.25 Hz, to verify that the function does
not operate when frequency difference is above limit.
4. Repeat with different frequency differences for example, 100 mHz with f-Bus nominal and
line leading and for example 20 mHz (or just above
FreqDiffMin) to verify that
independent of frequency difference the closing pulse occurs within 2 degrees.
5. Verify that the closing command is not issued when the frequency difference is less than
the set value FreqDiffMin.
1MRK 505 293-UEN B Section 7
Testing functionality
Breaker protection REQ650 79
Commissioning manual
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