10.5
Date Code 20170814
Instruction Manual
SEL-700G Relay
Testing and Troubleshooting
Commissioning Tests
Step 8. Locate the 14-pin connector J2 on the board.
It has four jumpers on pins 1-2, 3-4, 5-6, 13-14. Please remove
these jumpers and save them for restoring the relay to normal
operation after test.
Connect the low-level signal connector of the C700G cable to
J2, as shown in Figure 10.1 and Figure 10.2 (for example,
ribbon cable C700G connector of SEL-RTS Test System).
Step 9. Insert the board back into Slot
E
.
Refer to the SEL-RTS Instruction Manual for additional detail.
When simulating a delta PT connection, DELTAY_m := DELTA (m = X or Y),
with the low-level test interface referenced in Figure 10.1, apply the following
signals:
➤
Apply low-level test signal VAB to Pin VA.
➤
Apply low-level test signal –VBC (equivalent to VCB) to
Pin VC.
➤
Do not apply any signal to pin VB.
Commissioning
Tests
SEL performs a complete functional check and calibration of each SEL-700G
before it is shipped. This helps to ensure that you receive a relay that operates
correctly and accurately. Commissioning tests confirm that the relay, control
signal inputs, and control outputs are properly connected.
The following connection tests help you enter settings into the SEL-700G and
verify that the relay is properly connected. Brief functional tests ensure that
the relay settings are correct. It is unnecessary to test every element, timer, and
function in these tests. Modify the procedure as necessary to conform to your
standard practices. Use the procedure at initial relay installation; you should
not need to repeat it unless major changes are made to the relay electrical
connections.
Required Equipment
➤
The SEL-700G, installed and connected according to your
protection design
➤
A PC with serial port, terminal emulation software, and serial
communications cable
➤
SEL-700G Settings Sheets with settings appropriate to your
application and protection design
➤
The ac and dc elementary schematics and wiring diagrams for
this relay installation
➤
A continuity tester
➤
A protective relay ac test source
➢
Minimum: single-phase voltage and current with phase
angle control
➢
Preferred: three-phase voltage and current with phase
angle control
Содержание SEL-700G Series
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