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
APPROVED FOR EXTERNAL DISTRIBUTION
– PROPERTY OF AMPCONTROL PTY LTD
– NOT TO BE REPRODUCED IN PART
The trip settings alter slightly for the Residual Voltage Protection Element version. In this version, the
existing trip time and level (although extended in available values) settings are utilised for the series
earth continuity resistance only. The shunt trip time setting becomes the Pilot Interlock Trip Time Setting.
The Pilot Interlock Trip Time setting is also used for open circuit trip conditions (>100Ω). This means that
the EC settings that have a set trip point (shunt and open circuit faults) can have a separate trip time that
is significantly faster than the series EC setting, which is more commonly used for touch potential
protection.
7.3.1 Pilot Series
Table 8 Protection Element - Earth Continuity Series Trip Characteristics
Requires a general reset after the trip condition has cleared.
Alternatively the trip can be automatically reset depending on the
status of the EC Latch parameter.
Open Main Contactor Relay
Prevent Main Contactor from closing
Logged only if outlet is running
Trip time
Trip level
Trip latch enable
Available as the raw ohms measurement, resolution of 1Ω.
7.3.2 Pilot Shunt
Table 9: Protection Element - Earth Continuity Shunt Trip Characteristics
Requires a general reset after the trip condition has cleared.
Alternatively the trip can be automatically reset depending on the
status of the EC Latch parameter.
Open Main Contactor Relay
Prevent Main Contactor from closing
Trip time
Trip latch enable
Available as the raw ohms measurement, resolution of 100Ω.
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