ABB RED670 User Manual

11.11.4 Local acceleration logic ZCLCPSCH
M11758-32 v5
Prepare the IED for verification of settings outlined in Section "Preparing the IED
to verify settings".
The logic is checked during the secondary injection test of the impedance
measuring zones.
11.11.4.1 Verifying the settings
M11758-37 v4
1.
Provide the IED with conditions equivalent to normal load for at least two
seconds.
2. Deactivate the conditions for accelerated function.
3. Apply a phase-to-earth fault at 100% of line impedance.
4. Check that the fault is tripped with the second zone time delay.
5. Provide the IED with conditions equivalent to normal load for at least two
seconds.
6. Activate the condition for accelerated function either by the autorecloser or
by the loss-of-load.
7. Apply a phase-to-earth fault at 100% of line impedance.
8. Check that the fault is tripped instantaneously.
11.11.4.2 Completing the test
M11758-57 v4
Continue to test another function or end the test by changing the TESTMODE
setting to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
11.11.5 Scheme communication logic for residual overcurrent
protection ECPSCH
M13926-2 v6
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
Before testing the communication logic for residual overcurrent protection function
ECPSCH, the four step residual overcurrent protection function EF4PTOC has to
be tested according to the corresponding instruction. Once this is done, continue
with the instructions below
.
If the current reversal and weak-end infeed logic for earth-fault protection is
included, proceed with the testing according to the corresponding instruction after
testing the communication logic for residual overcurrent protection. The current
reversal and weak-end-infeed functions shall be tested together with the permissive
scheme.
11.11.5.1 Testing the directional comparison logic function
M13926-7 v2
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 243
Commissioning manual

ABB RED670 Specifications

General

Rated Frequency	50/60 Hz
Product Type	Protection Relay
Rated Voltage	100-240 V AC/DC
Communication Protocols	IEC 61850, IEC 60870-5-103, DNP3
Operating Temperature Range	-25°C to +55°C
Protection Functions	Differential protection, distance protection, overcurrent protection
Outputs	Binary outputs
Enclosure	IP54
Mounting	19" rack mounting