Schweitzer Engineering Laboratories SEL-587Z - Outputs; Inputs; Metering

10.8
SEL-587Z Instruction Manual Date Code 20020903
Testing and Troubleshooting
Acceptance Testing
Outputs
Step 1. Purpose: Verify that contact outputs operate when you execute
the PULSE command.
Method:
a. Isolate all circuitry connected to the output contacts.
b. Set the target LEDs to display the contact outputs by
typing TAR 13 <Enter>. The front-panel LEDs should
now follow Row 13 of the Relay Word where the
outputs are listed.
c. Execute the PULSE OUTn (n = 1 to 4) command for
each output contact. Verify that the corresponding target
LED illuminates and output contact closes for
approximately one second. For example, type PUL
OUT1 <Enter> to test output contact OUT1.
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 contact inputs by
typing TAR 6 <Enter>. The fourth and fifth front-panel
LEDs should now follow logic inputs IN1 and IN2,
which are in Relay Word Row 6.
b. Apply the appropriate control voltage to each input and
make sure the corresponding target LED illuminates.
Note that the control voltage required to assert an input
is jumper selectable.
c. If you suspect the jumpers to be different from the
factory default, refer to Circuit Board Jumpers and
Battery on page 2.8 in Section 2: Installation for the
jumper locations.
Metering
Step 1. Purpose: Connect simulated power system secondary current
sources to the relay.
Method: Turn power off to the relay and connect current
sources. If three current sources are available, connect them to
the relay as shown in Figure 10.5 on page 10.9. If only two
current sources are available, connect the sources as shown in
Figure 10.6 on page 10.9 to generate balanced positive-
sequence currents.
Set the current sources to deliver 1A secondary. Set the current
angles (e.g., B-phase lags A-phase by 120°) according to the
phase rotation setting PHROT (i.e., PHROT = ABC or ACB).
Step 2. Purpose: Verify correct current levels.
Method: Turn relay power on, and use the METER command
to display the currents applied in Step 1. With applied currents
of 1A secondary per phase and a current transformer ratio of
120:1 (assuming setting CTR = 120), the displayed line
currents should be close to 120 amperes primary.