Description

The 50R series single-phase voltage monitor has a voltagesensing

circuit which constantly monitors the single-phase

power for a low voltage condition. Single-phase motors on fans,

compressors, air conditioners, heat pumps, well pumps, sump

pumps and small conveyor motors are all applicable to the

50R Series.

When a harmful condition is detected, the MotorSaver’s output

relay is deactivated after a specified trip delay. The output relay

reactivates after power line conditions return to an acceptable

level and a specified amount of time has elapsed (restart

delay). The trip delay prevents nuisance tripping due to rapidly

fluctuating power line conditions.

FEATURES BENEFITS

Proprietary voltage

sensing circuitry

Constant monitoring of single-phase power for

a low voltage condition

Adjustable trip delay

(-3 models) and restart

delay (-2 models) settings

Prevent nuisance tripping due to rapidly

fluctuating power line conditions and allows

staggered start up of multiple motors, after a

fault, to prevent a low voltage condition

High voltage detection

(-9 models)

Trips and resets at a fixed percentage of the

setpoint: trip 110 , reset 107 .

600 V rated relay

contacts available

on some models

Eliminates the need for a control transformer

to step voltage down to 120–240 V for a control

circuit