3-Phase Monitor

 

• Monitors for Phase Loss or Reversal, Low and Over Voltage
• Automatic Reset
• CSA Certified
• 5 Year Unconditional Warranty

 

Description

The Model 246 3-Phase Monitor is designed to continuously monitor 3-phase power lines for abnormal conditions. This device features solid-state voltage and phase angle sensing circuits, which drive a SPDT electromechanical relay.

A neutral is not required, allowing the Model 246 to be used with either Wye or Delta systems.

Three versions of the Model 246 cover the 120 and 208/240 VAC, 60Hz and the 380 VAC, 50Hz ranges. In addition, the models A246 and B246 are now CSA Certified.

Each option on the Model 246 monitor is adjustable throughout its operating range. The adjustment pots and LED indicators of OVER VOLTAGE and UNDER VOLTAGE are mounted on the front of the unit, for easy access.

 

Specifications

Model	A246	B246	EX246
Nominal AC Voltage	120	208/240	380
Adjustment Range Low: High:	85-125 V 110-140 V	160-260 V 210-280 V	300-400 V 350-450 V
Frequency	60Hz	60Hz	50Hz
Power Consumption (per phase)	1W	1.5W	2W
Transient Protection	2500V for 10ms
Repeat Accuracy	±0.1% of set point (fixed conditions)
Response/Reset Time	50ms
Reset type	Automatic
Dead Band	2%
Contact Rating	SPDT 10A at 240VAC resistive
Expected Relay Life	Mech: 10 million operations Elec: 100,000 at rated load
Operating Temperature	- 20° to +131° F
Humidity Tolerance	0-97% w/o condensation
Enclosure Material	ABS plastic
Weight	6 oz.
Mounting	8-pin socket *order separately
Agency approval	CSA	CSA

Downloads

Document	File Type	File Size	Download
Model 246 Datasheet	PDF	439 KB

© 2023 Relay Specialties, Inc.
17 Raritan Road, Oakland, NJ 07436 | 800-526-5376
Created By: G.Dezines