P.11.10
SEL-411L Relay Protection Manual Date Code 20151029
Testing and Troubleshooting
Testing Features and Tools
Main Board Processing Module Tests
Use signals from the SEL-4000 Low-Level Relay Test System to test the relay
processing module. Apply appropriate signals to the low-level test interface
J12 from the SEL-4000 Relay Test System (see Figure 11.2). These signals
simulate power system conditions, taking into account PT ratio and CT ratio
scaling. Use relay metering to determine whether the applied test voltages and
currents produce correct relay operating quantities.
The UUT Database entries for the relay in the SEL-5401 Relay Test System
Software are shown in Table 11.5 and Table 11.6.
Table 11.5 UUT Database Entries for SEL-5401 Relay Test System Software—
5ARelay
Label Scale Factor Unit
1IAW75 A
2IBW75 A
3ICW75 A
4IAX75 A
5IBX75 A
6ICX75 A
7VAY150V
8VBY150 V
9VCY150 V
10 VAZ 150 V
11 VBZ 150 V
12 VCZ 150 V
Table 11.6 UUT Database Entries for SEL-5401 Relay Test System Software—
1ARelay
Label Scale Factor Unit
1IAW15 A
2IBW15 A
3ICW15 A
4IAX15 A
5IBX15 A
6ICX15 A
7VAY150V
8VBY150 V
9VCY150 V
10 VAZ 150 V
11 VBZ 150 V
12 VCZ 150 V
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