Description

RXEDA/RAEDA – Time-overvoltage relay and protection assemblies

RXEDA 1 is a microprocessor-based time-overvoltage relay. The relay can be used for AC or DC. The AC input can be single-, two-, or three-phase, with or without neutral.

The relay may also be used as an instantaneous single-phase undervoltage relay. In case of three-phase undervoltage applications using one relay only, the relay will set the required undervoltage in all phases in order to operate.

Since the relay does not need a separate auxiliary DC supply, it is suitable as a replacement for electromechanical relays.

RXEDA 1 has a built-in timer and an LED indication of the time-delayed trip function. A starting output can be used as an alternative to having both outputs operated after the time-delay.

Main Features:

• Setting voltage ranges are 20-300 V DC and 15-210 V AC, 15-400 Hz
• Setting time range of 0-10 s definite time
• Two output changeover contacts: one for start and one for time function, or both for time function
• High resetting ratio; > 97 %
• No auxiliary voltage required