Over/Under 3-Phase Monitor

Description

The Models 269/269R Over & Under 3-Phase Monitor continuously monitors 3-phase lines for high voltage, low voltage, phase loss or phase reversal, and an adjustable .3 - 5 minute restart delay. This device features a solid-state voltage and phase angle sensing circuit, which drives a SPDT output relay.

The Models 269/269R is independent of the system load, and may be used on any horsepower motor. When phase sequence is correct, and the voltage remains between the upper and lower trip points, the output relay remains energized. When a fault condition is sensed, the output relay drops out.

The Models 269/269R does not require a neutral connection, and can be used on Wye or Delta systems. Each of the four voltage versions can be adjusted over a wide range. An adjustable restart delay (0.3-5 minutes) allows compressor head pressures to bleed off, in the event of short-term power failures. OVER and UNDER voltage failure indicators aid in cali bration and system troubleshooting.

Specs

Model 

A269R 

B269R 

C269R 

EX269R 

Nominal AC Voltage
(phase to phase)

 120VAC

208/240VAC 

480VAC 

380VAC 

Adj. Range
-Upper
-Lower


110-145V
80-115V


210-280V
170-240V


400-540V
380-460V


350-450V
300-400V

Frequency

 60Hz

50Hz 

Power Consumption

1.5W 

3W 

6W 

6W 

Transient Protection

 2500 VRMS for 10 msec

Repeat Accuracy

 ±0.1% of set point (fixed conditions)

Trip Delay

Fixed approx. 2 seconds

Restart Delay

Adjustable 0.3 to 5 minutes

Reset Type

 Automatic

Dead Band

Approximately 2% 

Output Contacts

SPDT   10A @ 240VAC   resistive

Expected Relay Life

        Mech:     10 million operations
        Elec:       100,000 at rated load 

Operating Temp

- 40º to +130º F 

Humidity Tolerance

 97% w/o condensation

Enclosure Material

ABS Plastic 

Mounting

Surface 

Weight

 9 oz.

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