22VB

The 22VB 3-Phase Voltage Band Monitor provides essential protection for industrial equipment. This device offers comprehensive monitoring capabilities, including phase loss, phase reversal, over/under voltage, and voltage unbalance, ensuring operational integrity across 190-480 VAC systems. Its auto-ranging feature simplifies setup. Users can precisely configure protection parameters with an adjustable trip delay ranging from 1 to 30 seconds and a restart delay from 1 to 500 seconds. This flexibility allows for tailored responses to transient voltage events, minimizing downtime and preventing equipment damage. The monitor's 2X SPDT output contacts, rated at 10A at 240VAC resistive, facilitate reliable control integration. Designed for DIN Rail or surface mounting, the 22VB offers a robust solution for maintaining system stability and extending machinery lifespan.

A microcontroller-based universal 3-phase voltage band monitor for
protecting 3-phase motors of any size from abnormal power conditions.
The Model 22VB can detect under voltage, over voltage, voltage
unbalance, reverse phase, and single-phasing even when regenerated
voltage is present. Status of the 3-phase system is indicated by LEDs
.Relay operation is fail-safe, i.e. the two SPDT output contacts drop
out when a fault condition or loss of power occurs. Under and over
voltage trip points are both adjustable. The under voltage adjustment
has two scales, 185-240VAC and 370-480VAC. The over voltage adjustment
also has two scales, 208-264VAC and 416-528VAC. The Model 22VB will
auto-range to the appropriate scale. Trip and restart delay adjustments
are provided to preventing nuisance tripping during power fluctuations
or short cycling in compressor applications. Voltage unbalance trip
point is fixed at 6%.The Model 22VB does not require a neutral
connection and can be used on either Wye or Delta systems. Operating
power for the Model 22VB is drawn from phases A and C. !

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Specifications

Monitored Conditions	Phase Loss, Phase Reversal, Over/Under Voltage and Voltage Unbalance
Operating Voltage	190-480 VAC
Frequency	50/60Hz
Measurement Type	RMS
Auto Ranging	Yes
Under Voltage Trip Range	185-480VAC
Under Voltage Reset	Trip setting +3%
Over Voltage Trip Range	208-528VAC
Over Voltage Reset	Trip setting -3%
Voltage Unbalance Trip	6%, Fixed
Voltage Unbalance Reset	5% Fixed
Trip Delay (Over, Under, & Unbalanced)	1-30 sec., adjustable
Trip Delay (Single-Phasing Faults)	1 sec., fixed
Trip Delay (Unbalance > 15%)	1 sec., fixed
Restart Delay	1-500 sec., adjustable
Reset Type	Automatic
Output Contacts	2X SPDT
Contact Rating	10A at 240VAC resistive
Power Consumption	6W at 480VAC
Operating Temperature	-20° to +140° F
Humidity Tolerance	0-97% w/o condensation
Terminal Torque (Power and Relay)	9 in lbs max
Terminal Torque (Manual Reset)	4.4 in lbs max
Wire Size (Power and Relay)	12-22 AWG
Wire Size (Manual Reset)	12-30 AWG
Enclosure Material	NORYL plastic
Mounting	DIN Rail or Surface Mount
Mounting Hole Diameter	0.25 in
Config: Low Current Option	Models ordered with suffix "/SG" have silver with gold flash contacts
Warranty	5-year Unconditional Warranty

FAQs

What voltage ranges does the 22VB monitor support?

The 22VB monitor supports an operating voltage range of 190-480 VAC. It features an under voltage trip range of 185-480VAC and an over voltage trip range of 208-528VAC.

How are trip and restart delays configured on this monitor?

The 22VB offers an adjustable trip delay for over, under, and unbalanced conditions from 1 to 30 seconds. The restart delay is also adjustable, ranging from 1 to 500 seconds.

What types of voltage anomalies does the 22VB detect?

The 22VB monitors for phase loss, phase reversal, over voltage, under voltage, and voltage unbalance. It also detects unbalance greater than 15% with a fixed 1-second trip delay.