Schweitzer Engineering SEL-387-0, Instruction Manual

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10.8
SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
Testing and Troubleshooting
Acceptance Testing
c. Execute the PULSE n command for each output
contact.
Verify that the corresponding target LED illuminates
and output contact closes for approximately one
second. For example, type
PUL OUT101 <Enter> to
test output contact
OUT101
.
d. Repeat this step for each output. Use the TARGET F
command to display the appropriate output elements.
Step 2. Purpose: Verify externally connected circuitry is operational.
Method:
a. Isolate all circuitry connected to the output contacts
except the circuit under test.
b. Set the target LEDs to display the contact outputs by
typing TAR F OUT101 <Enter> . The bottom row of
the front-panel LEDs will follow Row 41 of the Relay
Word where OUT101 is listed.
c. Execute the PULSE n command for each output
contact.
Verify that the corresponding target LED illuminates
and output contact closes for approximately one
second. For example, type
PUL OUT101 <Enter> to
test output contact
OUT101
.
d. Repeat this step for each output. Use the TARGET F
command to display the appropriate output elements.
Verify that the connected circuitry operates as expected.
Inputs
Step 1. Purpose: Verify that logic inputs assert when control voltage is
applied across the respective terminal pair.
Method:
a. Set the target LEDs to display the level-sensitive inputs
by typing TAR F IN101 <Enter> . The bottom row of
the front-panel LEDs will follow logic inputs IN101
through IN106, which is Relay Word Row 27.
b. Apply the appropriate control voltage to each input and
make sure the corresponding target LED turns on.
c. Repeat this step for each input. Use the TARGET F
command to display the appropriate output elements.
Metering
Step 1. Purpose: Connect simulated power system secondary current
sources to the relay.
Method:
a. Turn power off to the relay and connect current sources.
If three current sources are available, connect them to
the relay in a full three-phase connection, as shown in
Figure 10.3 . If only two current sources are available,
connect the sources as shown in Figure 10.4 to generate
balanced positive-sequence currents:
b. Connect the A-phase and B-phase current sources to the
dotted A and B current input terminals.
c. Connect both undotted A and B current input terminals
to the undotted C current input terminal.