Test
equipment
UMeasure
Ph/N
Ph/Ph
en08000027.vsd
U-Bus
U-Line
N
IED
U-Bus
N
UL1
UL2
UL3
N
Input Phase
L1,L2,L3
L12,L23,L31
IEC08000027 V1 EN
Figure 12:
General test connection with three-phase voltage connected to the
line side
6.7.1.1
Testing the synchronizing function
This section is applicable only if the synchronizing function is included.
The voltage inputs used are:
ULine
UL1, UL2 or UL3voltage inputs on the IED
U-Bus
Bus 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
1.1. U-Line = 100%
UBase
and f-line = 50.0 Hz
1.2. U-Bus = 100%
UBase
and f-bus = 50.2 Hz
2.
Check that a closing pulse is submitted and at closing angle less than 2
degrees from phase equality. Modern test sets will evaluate this automatically.
3.
Repeat with
1MRK 511 248-UEN -
Section 6
Testing functionality
73
Commissioning Manual
