Hitachi RER670 Commissioning Manual page 128

Section 10
Testing functionality by secondary injection
Test
equipment
IEC15000310 V2 EN-US
Figure 31:
10.9.1.1 Testing the synchronizing function
The voltage inputs used are:
U2PLN
U2PBB
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 = 0.2 Hz
FreqDiffMin = 0.01 Hz
tBreaker = 0.080 s
1. Apply voltages
1.1. U-Line = 100% UBaseLine and f-Line = 16.7 Hz
1.2. U-Bus = 100% UBaseBus and f-Bus = 16.85 Hz
2. Check that a closing pulse is submitted at a closing angle equal to calculated phase angle
value from the formula below. Modern test sets will evaluate this automatically.
Closing Angle = |( (f
f
Bus
f
Line
tBreaker = Set closing time of the breaker
3. Repeat with
122
U-Bus
U-Line
N
General test connection with two-phase voltage connected to the line side
UL1 or UL2 line voltage inputs on the IED
Busbar voltage input on the IED
– f
Bus Line
= Bus frequency
= Line frequency
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IED
UMeasure
U2PBB
Ph/Ph
N
Input Phase
L1,L2
Pos.Seq.
UMeasure
U2PLN
Ph/Ph
UL1
UL2
Input Phase
N
L1,L2
Pos.Seq.
IEC15000310-2-en.vsdx
) * tBreaker * 360 degrees) |
1MRK 506 377-UEN Rev. L
M2377-21 v8
M2377-116 v11
Railway application RER670
Commissioning manual