ADR141A /
Ref ID : ADR241A/IM/PLF
Rev No. : 02
4 PROTECTION FUNCTION & LOGIC FUNCTIONS
4.1 Overview
This section describes the ADR141A/ ADR241A Feeder Management IED settings, including
the protection elements and basic functions as well as the settings associated with the
protection function.
Application data.
Describes the list of information that you will need to know about the protected equipment
before calculating the relay settings.
Relay Settings.
List of settings that configure the IED inputs to accurately measure and interpret the ac
current input signals.
Breaker Failure (LBB).
Describes the Breaker Failure setting and logic needed for Breaker failure.
Trip Circuit Supervision.
Describes the Trip Circuit Supervision setting and logic needed for Trip Circuit Supervision.
Phase over current.
Describes all the over current settings and logic needed for protection for the Phase over
current fault
Ground over current (EF).
Describes all the Ground over current settings and logic needed for protection for the Phase
to Ground fault.
Cold Load.
Describe all the Cold Load settings and logic needed for protection for Cold Load protection.
4.2 Application Data
It is required to have the field data which is used to calculate the parameter settings which
has to be set in the IED. Hence the following inputs are required to calculate the parameter
settings in the relay.
• Highest expected load current.
• Current transformer primary and secondary ratings and Connections
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