Raritan PX3-4000 series, Руководство пользователя

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Appendix G: PX Models with Residual Current Monitoring
574
IEC 62020 specification PX with RCM characteristics
Ability to directly
discriminate
Directionally non-discriminating.
Rated residual operating
current
0.5A (highest value).
Residual currents with
direct current components
Type A.
RCM Self-Test
PX 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 PX
event notifications.
Note: If self-test fails, the FAILURE state persists until another self-test
runs and passes.
Web Interface Operations for RCM
The RCM is a PX inlet sensor. To view, configure or run self-test, click
the Inlet icon in the PX Explorer pane.
Checking RCM State and Current
A section titled 'Residual Current Monitor' is available on the Inlet page,
showing both the present RCM state and residual current.
To check RCM state and current on the Inlet page:
1. Click Inlet I1 in the PX Explorer pane, and the Inlet I1 page opens in
the right pane.
2. Locate the Residual Current Monitor section on the Inlet I1 page.

RCM State: There are five states - Normal, Warning, Critical,
Self-test active and Failure. See
RCM State Sensor
(on page
572) for information on these states.