Wenzhou Ginri Power Automation Co., Ltd.
Wenzhou Ginri Power Automation Co., Ltd.
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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