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| Categories | Three Phase Voltage Monitoring Relay | 
|---|---|
| Brand Name: | GINRI | 
| Model Number: | JVR1000 | 
| Place of Origin: | CHINA | 
| MOQ: | 50Pcs | 
| Payment Terms: | L/C, T/T, Western Union,Paypal | 
| Supply Ability: | 20000Pcs | 
| Delivery Time: | 7 -10 working days | 
| Packaging Details: | 1 relay in 1 box | 
| Certification: | CE | 
| Voltage Range: | 300-490V | 
| measuring circuit: | L1,L2,L3 | 
| Reset: | Manual or Power Cycle | 
| Contact: | SPDT | 
JVR1000 Three Phase Voltage Monitoring Relay3 Phase Sequence Relay 380VAC 50Hz
♦ Protective Functions
-- Phase sequence
-- Phase loss
-- Phase unbalance
-- Overvoltage
-- Undervoltage
Applications Pumps / Fans Blowers / Motors / Compressors ,have the CE CCC Certain ,make sure every product Quality ,Meet industry standards
♦ Technical data
| Type | JVR1000 | 
| Measuring circuit | L1,L2,L3 | 
| Rated voltage | 380VAC ,50Hz | 
| Monitoring functions | phase sequence, phase loss, overvolatege, undervoltage,phase unbalance | 
| Overvoltage setting range | 390-490V adjustable | 
| Undervoltage setting range | 300-470V adjustable | 
| Hysteresis | 10V | 
| Delay time for overvoltage and undervoltage | 0.1-25s adjustable | 
| Phase unbalance setting range | 5%-29% adjustable | 
| Delay time for phase unbalance | 1-25s adjustable | 
| Delay time for phase loss | 1s | 
| Delay time for phase sequence | instant | 
| Indicators | LCD indicating voltage,current,operation status | 
| Output contacts | 1 NO,1NC | 
| Contact capacity | 6A ,250VAC | 
| Dimensions (H x W x D) | 80×40×54mm | 
| Mounting | DIN rail | 

In many three-phase AC applications, the correct phase sequence is sometimes a necessary condition. Incorrect phase sequence or phase loss may cause the device to work abnormally or even be damaged.
The phase sequence relay can be regarded as a three-phase asynchronous motor with long-term operation in the locked state in terms of function and structure. Its structure diagram and one-phase equivalent circuit are shown in the figure.
Phase sequence relay can be widely used in three-phase electric applications, with indicator light as phase sequence indicator, combined with contactor to complete automatic commutation function
                                 
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