High voltage capacitor bank protection relay
CPR04
Trench Group
The Trench CPR04 is a comprehensive, numeric protection relay, featuring:
. Compact draw-out design
. Panel or 19 inch rack mounting
. Four software configurable measuring elements
. Five configurable output relays
. One self-supervision output relay
. Operating mode (Normal / H-Bridge) software selectable
. User configurable, to cater for a wide range of relay settings
. Two serial data ports (RS232 frontside / RS232 or RS485 rearside)
. Single wideband ac/dc power supply
. Time stamping function for trips & status register
Application
The CPR04 provides comprehensive protection for the capacitive, inductive and resistive elements of three phase medium voltage and high voltage shunt capacitor banks and harmonic filter circuits. The capacitor bank may have a single star, double star, delta or "H" configuration, with internally fused, externally fused or unfused capacitor units.
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