Ampcontrol Pty Ltd
– ABN 28 000 915 542
OCS USER MANUAL
MAG-182 Version 5
– FEB/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 19 of 72
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5
COMMISSIONING AND CALIBRATION
Prior to being put into service, the electrical protection system must be correctly commissioned. This
manual does not cover system commissioning; the full scope of commissioning tests should be
determined during the risk assessment or FMEA covering the design of the electrical protection system.
The following test can provide guidance on checking the correct operation of the Cassette Protection
Element during commissioning. These tests should be performed on each individual Cassette within the
installed OCS.
This is not intended to provide an exhaustive commissioning checklist, but should be considered to be a
minimum set of tests.
5.1 Earth Leakage
Test the correct operation of earth leakage circuits by injecting a fault current through the Earth Leakage
CT. Ensure that all relevant tripping circuits operate successfully and that latched trips may be reset in
the appropriate manner.
Disconnect the toroid from the Cassette Protection Element and ensure that an EL CT fault trip is issued
with similar effect.
5.2 Residual Voltage
This is applicable to the Residual Voltage Protection Element Version only. Test the correct operation of
residual voltage detection circuitry by injecting a residual voltage onto the phases. Ensure that all
relevant tripping circuits operate successfully and that latched trips may be reset in the appropriate
manner.
These tests can be facilitated using residual voltage test relays, built into the Cassette Protection
Element. These rel
ays are controlled using the Cassette Protection Element’s communications interface.
5.3 Earth Fault Lockout
Test the correct operation of Earth Fault Lockout protection by connecting suitably rated test resistors to
the power conductors. Attempt to energise the outlet and confirm that the Cassette Protection Element
trips on Earth Fault Lockout.
WARNING!
If the Earth Fault Lockout does not trip during this test,
full system
voltage and power may be subsequently applied to the test
resistors
.
5.4 Earth Continuity
Test that the Earth Continuity protection is operational by creating an open circuit on the pilot conductor.
Ensure that all relevant tripping circuits operate successfully and that latched trips may be reset in the
appropriate manner.
Repeat with a short circuit between pilot and earth.
These tests can be facilitated using earth continuity test relays, built into the Cassette Protection
Element. These relays are controlled using the Cassette Protection Element
’s communications interface.
5.5 Insulation Test (High Voltage)
If the Earth Fault Lockout and Earth Continuity tests are successful, check that an automatic HV
insulation test is initiated by the Cassette Protection Element when the module is started.
