Ampcontrol Pty Ltd – ABN 28 000 915 542
IPD USER MANUAL
IPDB014 Version 14 – SEP/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
APPROVED FOR EXTERNAL DISTRIBUTION
– PROPERTY OF AMPCONTROL PTY LTD
– NOT TO BE REPRODUCED IN PART
9.2.1 Cable Connection Modules
A cable connecting module, which is a resistive isolation device, is used to interface the power
conductors to the IPD Relay. Modules are selected in the Group 1 Settings (Level 8, Position 3) for
rated line voltages of 110V, 415V, 1000V or 3.3kV.
IPD Cable Connection Modules (CCMD) are the preferred modules and must be used when the
‘Insulation Test’ function is required.
IPA Cable Connecting Modules (CCMA) are available with rated voltages of 110V, 415V & 1000V for
use with the IPD Relay. The use of these modules only allows the normal (Intrinsically Safe) EFLO Test
to be carried out. The High Voltage DC ‘Insulation Test’ is not available with the CCMA Modules. The
3.3 kV CCMA is not to be used in conjunction with the with the IPD relay.
An IPA CCMA110V Cable Connecting Module is available for use when the relay is installed to control
the high-tension supply and/or to provide voltage related functions via 110V PT’s. In this application the
EFLO and Insulation test functions are not provided.
When CCM None is selected the IPD Relay does not provide an EFLO or ‘Insulation Test’, or voltage
functions. Also under voltage checking does not occur.
The ‘CCM None’ and ‘CCMA110V’ Modes MUST NOT BE USED in
applications where EFLO is required by mining regulations.
9.2.2 Intrinsically Safe EFLO Test
The initial earth fault lockout function tests the resistance of the 3 phase lines to earth by applying an
intrinsically safe signal prior to the closure of the main contactor in accordance with AS/NZS 2081.4
2002. The test is initiated by closure of the start button once all starting conditions are met (See
Section 14.3, Operational Sequence). This test takes 1 second.
If the value is less than the pre-set level; (See Specifications in Section 18) a trip occurs. The “EF” LED
on the Remote Display Module is illuminated and the open collector output on the relay is switched on
to provide remote monitoring if required. To reset the relay following an earth fault lockout trip, operate
the reset button.
The earth fault leakage level (EF) of the three phases is displayed on the RDM “Earth Fault
Information” page as a % of the trip level and relates to the last earth fault lockout test performed
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