Ampcontrol IPD - Voltage Related Functions; Main Contactor Fail Protection; Under-Voltage Trip

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 52 of 96
APPROVED FOR EXTERNAL DISTRIBUTION
– PROPERTY OF AMPCONTROL PTY LTD
– NOT TO BE REPRODUCED IN PART
11 VOLTAGE RELATED FUNCTIONS
The IPD relay uses the Cable Connection Module (CCMD/CCMA) to monitor the magnitude of the
voltage on the load side of the outlet’s main contactor. The voltage measurement is used to implement
the following functions:
 Main Contactor Fail Protection
 Under-Voltage Trip
 Voltage Metering
Figure 11.1: Voltage Monitoring Circuit Terminations
IPD
Relay
VCmA
03
VCmB
04
05
VCmC
A B C
Phase Conductors
From Contactor
CCMD
VcmA
VcmB
VcmC
Earth
Minimum 4mm
2
Va
Vb
Vc
Flying Leads
RL4 110Vcom
See EFLO
Connections
Ensure type matches
system voltage
MC
MCI+
27
MCI-
28
Main Contactor
Position Feedback