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
Page 16 of 96
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4.2.3 Phase Current Transformers (CTs)
The IPD relay measures the phase currents from two
of the
outlet’s three phases. Using these measured
current values, the IPD is able to implement its
overload and short circuit protections functions.
The IPD requires two (2) current transformers to
measure the phase currents.
The phase current transformers are available in two
standard sizes: 45mm inner diameter and 88mm inner
diameter.
The current transformers are panel mounted units.
4.2.4 Earth Leakage Toroid
The IPD requires a summation toroid to be installed
around the outlet’s three phase conductors. This toroid
allows the IPD to measure the magnitude of outlet’s earth
leakage current.
Only one (1) earth leakage toroid is required per IPD.
Earth leakage toroids are available in two standard sizes:
60mm inner diameter and 112mm inner diameter.
4.2.5 Remote Display Module Type D (RDM-D)
The IPD requires a Remote Display Module (RDM-D)
to configure the IPD’s parameters. This unit also allows
the user to check the status of the outlet, including trip
type and status, as well as the position of the run
output relay (MCR).
This unit is certified for use in hazardous areas,
allowing the IPD’s protection settings to be modified
external to the enclosure.
The RDM-D is panel mounted via the mounting screws
located on the unit’s fascia.
