Outgoing Feeder, Medium M02; Features - ABB REX 521 Technical Reference Manual, Standard Configurations

REX 521
10.3.
10.3.1.
158
Protection Relay
Technical Reference Manual, Standard Configurations

Outgoing feeder, Medium M02

Features

This application example describes an outgoing feeder of a single busbar including:
• auto-reclosure function
• overcurrent protection
• directional earth-fault protection
• phase discontinuity protection
• thermal overload protection for cable/line
The network is either compensated or isolated. Three-phase current measurement is
established with a set of current transformers and the neutral current is measured
with a cable transformer. The residual voltage is measured with a set of voltage
transformers in an open-delta connection.
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Application Example 7
REX 521 M02
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