10.4
SEL-700G Relay
Instruction Manual
Date Code 20170814
Testing and Troubleshooting
Testing Tools
Access the low-level test interface connectors by using the following
procedure.
Step 1. Loosen the mounting screws and the ground screw on the back
and remove the back cover.
Step 2. Remove the 4 ACI/3 AVI, 1 ACI, or 3 ACI board from Slot
Z
.
Step 3. Locate the 16-pin jumper assembly J3 on the board and move
the four jumpers from CT to AMS positions.
CT position (normal) jumpers are between 1-2, 5-6, 9-10 and
13-14 pin numbers.
AMS position (test) jumpers are between 3-4, 7-8, 11-12 and
15-16 pin numbers.
Step 4. 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 5. Insert the 4 ACI/3 AVI, 1 ACI, or 3 ACI board back into its
Slot
Z
.
Step 6. Remove the 3 ACI/4 AVI, 2 AVI, 3 ACI, or 3 ACI/2 AVI board
board from Slot
E
.
Step 7. Locate jumper assembly J3 and change it from CT (normal
position) to AMS (low-level test position) as described in
Step 3.
VAY
J2 on Slot
E
card
250 V
218.4
VBY
J2 on Slot
E
card
250 V
218.4
VCY
J2 on Slot
E
card
250 V
218.4
VN
J2 on Slot
E
card
250 V
218.4
VS
J2 on Slot
E
card
250 V
218.4
Table 10.2
Resultant Scale Factors for Inputs
(Sheet 2 of 2)
Channel
Label
Circuit Board and
Connector
Nominal Input
Scale Factor
(A/V or V/V)
CAUTION
The relay contains devices sensitive
to Electrostatic Discharge (ESD).
When working on the relay with the
front panel removed, work surfaces
and personnel must be properly
grounded or equipment damage may
result.
NOTE:
You can use the 14-pin
connectors of the SEL-RTS ribbon
cable C700G. The connectors are not
keyed; refer to Table 10.1: Cable C700G
Connection Options.
Summary of Contents for SEL-700G Series
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