3-Phase Wye Voltage Unbalance Monitor

Description

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.

Specs

Model 2002Y-XXX/YYY 

2002Y-69/120

2002Y-120/208 

2002Y-138/240 

2002Y-220/380 

2002Y-240/415

2002Y-277/480 

Phase-Neutral Voltage

 69VAC

120VAC 

138VAC 

220VAC 

240VAC 

277VAC 

Phase-Phase Voltage

120VAC

208VAC 

240VAC 

380VAC 

415VAC 

480VAC 

Voltage Range

 ±15%

 ±15%

 ±15%

 ±15%

 ±15%

 ±15%

Frequency

 50Hz - 60Hz

Power Consumption
(per phase max)

 2.0W

 2.0W

 2.0W

 2.0W

 2.0W

 2.0W

Transient Protection

 2500VRMS for 10msec

Repeat Accuracy

 ±0.1% (fixed conditions)

Unbalance Adjustment

 2% to 10%

Response Time

 150 msec

Reset Time

 Fixed 1 sec

Dropout Time

Adjustable 0.2 to 20 seconds 

Reset Type

Automatic 

Dead Band

 0.5% max

Contact Rating

DPDT 10amps at 240VAC resistive 

Expected Relay Life                                             Mech:   10 million operations
                                            Elec:   100,000 operations at rated load
Operating Temp

 -40° to +131°F

Humidity Tolerance

 0-97% w/o condensation

Mounting

 Surface

Enclosure Material

 ABS Plastic

Weight

10 oz.

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