The BE1-CDS240 Current Differential System is an economical, microprocessor based, multifunction

system that provides a four input, three-phase percentage differential with harmonic restraint protection.

Also included is three-phase with voltage control, ground, and negative-sequence overcurrent protection,

voltage and frequency protection, breaker failure for up to four breakers, breaker monitoring for four

breakers, transformer monitoring, and metering functions, all in an integrated system with several

communications options. The BE1-CDS240 Current Differential System is intended for use in any low

impedance current differential protection application including transformer, generator, motor, and bus

protection. Four setting groups are provided for adaptive relaying with automatic selection logic for cold

load pickup and/or dynamic setting group changes.