1.
Inject the polarizing voltage 2U0 to 5% of
UBase
and the phase angle between voltage and
current to 155°, the current leads the voltage.
2.
Inject current (
180° — AngleRCA
) in one phase to about 110% of the set operating current of
the four step residual overcurrent protection (
IN>Dir
).
3.
Check that the IRVL output is activated in the disturbance recorder after the set time
tPickUpRev
.
4.
Abruptly reverse the current to
AngleRCA
setting lagging the voltage, to operate the forward
directional element.
5.
Check that the IRVL output still is activated after the reversal with a time delay that complies
with the setting
tDelayRev
.
6.
Switch off the polarizing voltage and the current.
10.10.4.2
Testing the weak-end infeed logic
M13936-25 v2
If setting WEI = Echo
M13936-27 v8
1.
Inject the polarizing voltage 2U0 to (180° —
AngleRCA
) of
UBase
and the phase angle
between voltage and current to 155°, the current leads the voltage.
2.
Inject current (180° —
AngleRCA
) in one phase to about 110% of the setting operating current
(
IN>Dir
).
3.
Activate the CRL binary input.
No ECHO and CS should appear.
4.
Abruptly reverse the current to the setting of
AngleRCA
setup lagging the voltage, to operate
the forward directional element.
No ECHO and CS should appear.
5.
Switch off the current and check that the ECHO and CS appear on the corresponding binary
output during 200ms after resetting the directional element.
6.
Switch off the CRL binary input.
7.
Activate the BLOCK binary input.
8.
Activate the CRL binary input.
No ECHO and CS should appear.
9.
Switch off the polarizing voltage and reset the BLOCK and CRL binary input.
If setting WEI = Echo & Trip
M13936-52 v12
1.
Inject the polarizing voltage 2U0 to about 90% of the setting (
2U0>
) operating voltage.
2.
Activate the CRL binary input.
No ECHO, CS and TRWEI outputs should appear.
3.
Increase the injected voltage to about 110% of the setting (
2U0
) operating voltage.
4.
Activate the CRL binary input.
5.
Check that the ECHO, CS and TRWEI appear on the corresponding binary output or on the
local HMI.
6.
Reset the CRL binary input.
7.
Activate the BLOCK binary input.
1MRK 506 377-UEN Rev. K
Section 10
Testing functionality by secondary injection
Railway application RER670
137
Commissioning manual
© 2017 - 2021 Hitachi Power Grids. All rights reserved
Содержание Relion 670 series
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