Schweitzer Engineering Laboratories SEL-387E - Page 194

5-22 Metering and Monitoring Date Code 20080110
SEL-387E Instruction Manual
Self-Test Condition Limit Protection
Disabled
ALARM
Output
Description
5 V REG Warning
Failure
+4.80 V
+5.20 V
–4.80 V
–5.20 V
+4.65 V
+5.40 V
–4.65 V
–5.40 V
No
Yes
Pulsed
Latched
Periodically
measures the
regulated
±5 V power supply.
12 V PS Warning
Failure
+11.50 V
+12.50 V
–11.50 V
–12.50 V
+11.20 V
+14.00 V
–11.20
–14.00 V
No
Yes
Pulsed
Latched
Periodically
measures the
±12 V power supply.
15 V PS Warning
Failure
+14.40 V
+15.60 V
–14.40 V
–15.60 V
+14.00 V
+16.00 V
–14.00 V
–16.00 V
No
Yes
Pulsed
Latched
Periodically
measures the
±15 V power supply.
TEMP Warning –40°C
+85°C
No Periodically
measures the main
board temperature.
RAM Failure Yes Latched Periodically
performs a
read/write test at
each RAM location.
ROM Failure checksum Yes Latched Periodically
performs a
checksum test on the
relay program
memory.