Guodian Nanzi PSC641U Capacitor Protection and Control Device

1 Overview
The PSC 641U Capacitor Protection and Control Device is a multifunctional device with basic configurations including current and voltage protection and unbalance protection. It integrates various measurement
and control functions, suitable for shunt capacitors at voltage levels of 35kV and below. Its application areas cover industries such as power, water conservancy, transportation,
petroleum, chemical, coal, metallurgy, etc.
1.1 Protection Function Configuration
a) Two-stage phase current protection
b) Two-stage zero-sequence current protection
c) Overcurrent inverse time protection
d) Zero-sequence inverse time protection
e) Undervoltage protection
f) Overvoltage protection
g) Three independent unbalance protections
h) Automatic switching function
i) Non-electrical protection
j) TV disconnection detection
1.2 Measurement and Control Function Configuration
a) Measurement quantities such as current, voltage, power, power factor, etc.
b) 14 external switch input telemetry collection
c) Circuit breaker position, manual tripping, and accident telemetry
d) Remote control of normal circuit breaker opening and closing
e) 2 pulse inputs, electric energy accumulation
f) GPS time synchronization input (adaptive to minutes and seconds)