ABB RER670 - Testing the Current Reversal Logic; Testing the Weak-End Infeed Logic

First, test the two step residual overcurrent protection function EF2PTOC and then
the current reversal and weak-end infeed logic according to the corresponding
instructions. Then continue with the instructions below.
10.10.4.1 Testing the current reversal logic
M13936-9 v7
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.
Section 10 1MRK 506 377-UEN C
Testing functionality by secondary injection
160 Railway application RER670 2.2 IEC
Commissioning manual