Zhuhai Wanlida Electric Co., Ltd.
Contact Us
  • Contact Person : Mr. wu daniel
  • Company Name : Zhuhai Wanlida Electric Co., Ltd.
  • Tel : 86-756-3395623
  • Fax : 86-756-3395201
  • Address : Guangdong,ZHUHAI,Relay Protection Industrial Park, No.1 Technology Road, Science and Technology Innovation Coast, High-tech Zone
  • Country/Region : China
  • Zip : 519085

Wanlida Low Voltage Motor Protection Relay

Wanlida Low Voltage Motor Protection Relay
Product Detailed
Wanlida Motor protection relays mainly applies to the low-voltage motor integrated controlling and protecting of AC 380V~1.2KV Wanlida Low Voltage Motor Protection Relays Application Fields

The MMPR-230 motor protection relay works with external primary current transformer, mainly applies to the low-voltage motor integrated controlling and protecting of AC 380V~1.2KV. The products from this series can be used in petrochemical, hydro-electric power, thermal power, smelting and water pumping station.

Device featuresUses high-performance 16-bit industrial microprocessors, high  integration,  functions  strong, fast. Three phase current, voltage AC sampling, perfect measuring and controlling functions.Small size, under-power  consumption,  suitable  for  installation  in  the  switchgear  or  on  centralized panel.LCD display with wide temperature range.Strong anti-interference capability: Level IV of rapid transient interference, level IV of  electrostatic discharge interference, electromagnetic interference III radiation level, pulse interference III-class group.With perfect protective function, automatic start functions when power restores. All kinds of reduction voltage start control modes, two-way and two-speed start control modes. Local start/stop switch and control mode selection switch.Remote start stop control with terminal control mode or communication control mode.Keeps records even power is off.4~20mA output with Optical isolation.Equipped with Profibus and Modbus-RTU  communication  method,  remote  measuring,  remote signal and remote control can be achieved through communication network and background monitor system.Technical specifications and indicators

1. Rated parameters

1.1 AC voltage input: ~380V(direct measuring),~100V(PT measuring).

1.2 AC current: 1~200A.

1.3 Rate frequency: 50Hz.

1.4 Power supply: AC/DC220V,AC/DC110V.

2. Main specifications

2.1 Accuracy: the measuring error of protective current, voltage does not exceed ±1%; the measuring error of active power, reactive power does not exceed ±3%; the error of  power  factor does not exceed ±1%; and the frequency error does not exceed ±0.02Hz. 

2.2 Time delay and trip setting accuracy: 

a) Trip setting accuracy: the error does not exceed ±3%, current trip setting accuracy: the error does not exceed ±3% or ±30mA,current unbalance setting accuracy: the error does not exceed ±3%. 

b) Time delay accuracy: the error does not exceed ±100ms when time delay setting is 0s, the error does not exceed ±25ms when time delay setting is 0.1~2s, the error does not exceed ±1% of setting when time delay setting is over 2s. 

c) Time delay accuracy of Thermal protection: the error does not exceed ±100ms or ±5%; 

d) Trip setting accuracy of Under-power  protection: the error does not  exceed ±5%; Time delay  accuracy of Under-power protection: the error does not exceed ±300ms; 

2.3 Output contact rating: AC250V,8A.

3. Power consumption

Maximum power consumption ≤ 5W.

4. Environmental specifications

4.1 Atmospheric pressure: 80kPa~110kPa(below 2000m of sea level).

4.2 Humidity: 5% ~ 95%

4.3 Operating temperature: -20°C~+55°C.

4.4 Operating Environment: Does not contain materials that lead to metal corrosion or damage to the insulation of gas and more serious mold and dust, does not contain fire explosion hazard. 

Wanlida Low Voltage Motor Protection Relay

Copyright Notice @ 2008-2012 ECVERY Limited and/or its subsidiaries and licensors. All rights reserved.