Model 2002Y 3-Phase Wye Voltage Unbalance Monitor
The Model 2002Y 3-Phase Voltage Unbalance Monitor is designed to continuously monitor a three-phase line with a neutral connection for unbalanced voltage conditions.
This device will only energize the relay if an unbalance exists. Zero volts on all three phases is considered a balanced condition. This allows the Model 2002Y to be used with shunt breakers, so that main power can be restored without resetting breakers.
The solid-state sensing circuit drives an internal electromechanical relay. Indicator lights on the monitor show when the voltage balance is within an acceptable range; when an unbalance exists; and when the relay is actually tripped.
50Hz - 60Hz
(per phase max)
2500VRMS for 10msec
±0.1% (fixed conditions)
2% to 10%
Fixed 1 sec
Adjustable 0.2 to 20 seconds
DPDT 10amps at 240VAC resistive
|Expected Relay Life|| Mech: 10 million operations|
Elec: 100,000 operations at rated load
-40° to +131°F
0-97% w/o condensation