3-Phase Voltage Unbalance Monitor

 

• Detects Unbalanced Voltages
• Percent of Unbalance Adjustment
• Automatic Reset

 

Description

The Model 200 3-Phase Voltage Unbalance Monitor is designed to continuously monitor a three-phase line 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 200 to be used with shunt breakers, so that the breaker can shut off the main power without tripping the monitor.

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.

When an acceptable voltage balance is reapplied, the Model 200 will automatically reset the relay.

 

Specifications

Model	A200	B200A	B200B	C200	D200	EX200
Nominal AC Voltages	120VAC	208VAC	240VAC	480VAC	575VAC	380VAC
Voltage Range	± 15%	± 15%	± 15%	± 15%	+5 to -15%	± 15%
Frequency	60Hz	60Hz	60Hz	60Hz	60Hz	50Hz
Power Consumption (per phase)	0.5W	1W	1W	2W	2W	2W
Transient Protection	2500VRMS for 10ms
Repeat Accuracy	± 0.1% (fixed conditions)
Unbalance Adjustment	2% to 10%
Response Time	100ms
Reset Time	Fixed 1 sec
Dropout Time	Adjustable 0.2 to 20 seconds
Reset Type	Automatic
Dead Band	0.5% max
Contact Rating	DPDT 10 amps at 240VAC resistive
Expected Relay Life	Mech: 10 million operations Elec: 100,000 operations at rated load
Operating Temp	- 20° to +131° F
Humidity Tolerance	0-97% w/o condensation
Mounting	Surface
Enclosure Material	ABS plastic
Weight	10 oz.

Downloads

Document	File Type	File Size	Download
Model 200 Datasheet	PDF	519 KB

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17 Raritan Road, Oakland, NJ 07436 | 800-526-5376
Created By: G.Dezines