Raritan PX3-3000 series, Руководство пользователя

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Appendix F: PX3 Models with Residual Current Monitoring
707
IEC 62020 specification PX3 with RCM characteristics
Connection of load
conductors Monitored line is directly connected.
Fault indicating means Visual, with other output signals.
Ability to directly
discriminate Directionally non-discriminating.
Rated residual operating
current 0.5A (highest value).
Residual currents with
direct current components Model dependent.
Models ending in -M5 are Type A, and -M11 or
–M18 are Type B.
RCM Self-Test
PX3 with RCM have a built-in self-test feature that performs these
functions:

When residual current is less than 3mA, 15mA is momentarily added
to determine whether the low reading is due to a faulty sensor. The
residual current added is done in a safe manner which does not run
current into ground or pose operator risk.

The RCM state sensor changes to SELF-TEST and then back to its
original state if self-test passes, or to the FAILURE state if self-test
fails. These state changes are useful to verify your monitoring
systems (SNMP, syslog, or email) are correctly set up to receive PX3
event notifications.
Note: If self-test fails, the FAILURE state persists until another self-test
runs and passes.