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Help CenterME-JVR1000 Multifunction 3-phase Sequence Protection Relay With Counting and Timing
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| Items | Paramenters |
| Rated supply voltage | 3-phase 380-450VAC |
| measuring range | 300-490VAC |
| Fault records | last 3 times |
| Working condition | -10~+55'C humidity ≤85% RH no condensation |
| weight | 130g |
| Voltage measurement accuracy | 0.01 |
| Output contact | 1NO,1NC |
| Contact capacity | 6A/250VAC |
| Mechanical durability | 1000000 cycles |
| Dielectric strength | ≥2kVAC |
| Working frequency | 50HZ |
| Parameters | Setting range | Step | Default | Trip time | Hystersis |
| Overvoltage | 390-490V,OFF | 1V | 437V | 0.1-25s | 10V |
| Undervoltage | OFF,300-370V | 1V | 342V | 0.1-25s | 10V |
| Phase unbalance ratio | 5%-29% OFF | 1% | 5% | 1-25s | 2% |
| Phase loss | >29% phase unbalance | / | / | 1s | / |
| Phase sequence | / | / | ON | instant | / |
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1.Introduction of 3-phase And Voltage Relay
ME-JVR1000 is Multi-function monitoring and protection device which includes voltage show, phase sequence protection and phase unbalance protection. It uses advanced microprocessor chip and nonvolatile storage technology. English LCD is easy to operate. It can show the current supply voltage. The relay will cut off the power to protect the equipment from overvoltage, undervoltage, phase loss, phase reversal and phase unbalance faults. Products are widely used in air compressor, electric motos, power distribution boxes, pumps, fuel pumps, centrial air conditioning units, electrical control boxes, distribution cabinets, crances, etc.
2.Protective Funtion of 3-phase And Voltage Relay
A.Phase Loss protection:power will be cut off during phase lose;
B.Phase sequence protection:power will be cut off during when wrong phase sequence;
C.Under voltage protection:power will be cut off during under-voltage;
D.Over voltage protectionpower will be cut off during over-voltage;
E.Phase unbalance protection;
F.Voltage display:show the current supply voltage;
G.Fault records:recording the times and the tatal time of the errors.
3.Feature of 3-phase And Voltage Relay
A.Built-in LCD and keypad afford a precise,digital setting;
B.Three-phase monitoring of phase sequence, phase loss, over- and undervoltage;
C. Adjustable over- and under voltage threshold ;
D.Independent adjustable delay time for phase sequence, phase loss, overvoltage, undervoltage;
E.Powered by the measuring circuit;
F.1 C/O & 1NC contacts;
G.with Timing, counting and faulure recording
4.Applications of 3-phase And Voltage Relay
A.Pumps;
B.Fans;
C.Blowers;
D.Motors;
E.Compressors;
We are a professional manufacturer of Digital Panel Meter for many years. Our company has formed a perfect full-service system integrated by the R&D, manufacture and domestic trading and foreign sales.Based on the trading belief 'Focus on customers,' our company has been calmly handled the market oscillations. For our trading process, we are not just selling our product but also focusing on customers' satisfaction......
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