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|Protection Functions:||Over&under Voltage,phase Loss,phase Sequence,phase Unbalance||Overvoltage Range:||390-490V|
|Undervoltage Range:||300-370V||Delay Time:||0.1-25s|
LCD 3 Phase Voltage Monitoring Relay , JVR1000 Time Delay Undervoltage Relay
The three-phase power supply monitor is a device that provides relay protection for the three-phase motor input power supply voltage is too high, voltage is too low, phase failure, reverse phase, three-phase voltage imbalance. The protector can timely break the contacts of the switch electrical appliances, disconnect the three-phase power supply of the motor, and quickly and reliably protect the motor.
1 . Reverse phase: The phase sequence of the power input to the protected device is incorrect.
2 . Overvoltage: The operating voltage of the protected equipment is higher than the set value.
3 . Undervoltage: The operating voltage of the protected equipment is lower than the set value.
4 . Static phase loss: refers to the phase failure of any phase when the protected device is in the non-operating state.
5 . Dynamic phase loss: refers to the phase failure of any phase when the protected device is in the running state.
6 . Three-phase voltage imbalance: refers to a kind of voltage imbalance protection that affects the safe operation of the equipment due to the unbalance of the three-phase voltage.
1. Its protection function is not affected by the size of the line or load current, inrush current, unbalanced current, and load properties.
2. Ability to perform full-performance, climate-wide long-term work to ensure normal and stable operation of appliances and motors.
3. There is no requirement for motor wiring when used for motor protection.
-- Built-in LCD and keypad afford a precise,digital setting
-- Three-phase monitoring of phase sequence, phase loss, over- and undervoltage and phase unbalance
-- Adjustable over- and undervoltage, phase unbalance threshold
-- Independent adjustable delay time for overvoltage, undervoltage, phase unbalance
-- Powered by the measuring circuit
-- 1 NO & 1NC contacts
-- Faulure recording
♦ Protective Functions
-- Phase sequence
-- Phase loss
-- Phase unbalance
♦ Typical Applications
• Pumps • Fans
• Blowers • Motors
• CE • CCC
♦ Technical data
Phase sequence,phase loss,overvoltage
|Overvoltage setting range||390-490V adjustable|
|Undervoltage setting range||300-470V adjustable|
Delay time for overvoltage
|Phase unbalance setting range||5%-29% adjustable|
|Delay time for phase loss||1s|
|Delay time for phase sequence||Instant|
|Indicators||LCD indicating voltage,current,operation status|
|Dimensions(H x W x D)||80*40*54mm|
Contact Person: sales