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RD-MV35(N)/36(N)/37(N)

Microcontroller based
Supply voltage measurement (True RMS)
Overvoltage, undervoltage, phase failure, asymmetry and
phase sequence protection
Protection parameters setting by knobs
Supply voltage:RD-MV35,36,37: 208V,220V,240V,380V,400V,415V,460V,480V RD-MV35N,36N,37N: 220V,230V,240V。
N phase failure protection for RD-MV35N/36N/37N
2 module DIN rail housing
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Three phase voltagemonitoring relay is used to protect the three-phase electric motors supplied from three-phase mains, against phase failure, incorrect phase sequence, voltage asymmetry, over and under voltage.

Technical data


Models

RD-MV35/36/37

RD-MV35N/36N/37N

Supply terminals

L1,L2,L3

L3,N

U> setting value

(105%-125%)×Un

U< setting value

(70%-95%)×Un

Asymmetry setting

5%~20%

U> trip delay

0.1 ~10s

U< trip delay

0.1 ~10s

Asymmetry trip delay

0.1 ~10s

Voltage hysteresis

6V

5V

Asymmetry hysteresis

2%

Trip time for incorrect phase sequence and phase failure

≤0.2s

Voltage measurement error

≤1%

Delay error

±5%+0.1s

Knob setting error

1% x scale value

Rated insulation voltage

480V

Output contacts

1C/0,1NO+1NC

Current rating

8A/250V AC1

Mechanical life

106

Electrical life

105

Protection degree

IP20

Pollution degree

3

Altitude

≤2000m

Wire size/Torque

0.5mm2~2.5mm2 /0.5Nm



●Models

 

 

 

 

 

Models

U>

U<

Phase failure

Phase sequence

Asymmetry

RD-MV35

 

 

RD-MV35N

 

 

RD-MV36

 

RD-MV36N

 

RD-MV37

RD-MV37N



Models

Supply voltage (Un)

RD-MV35/208

RD-MV36/208

RD-MV37/208

3×208/50Hz

RD-MV35/220

RD-MV36/220

RD-MV37/220

3×220/50Hz

RD-MV35/240

RD-MV36/240

RD-MV37/240

3×240/50Hz

RD-MV35/380

RD-MV36/380

RD-MV37/380

3×380/50Hz

RD-MV35/400

RD-MV36/400

RD-MV37/400

3×400/50Hz

RD-MV35/415

RD-MV36/415

RD-MV37/415

3×415/50Hz

RD-MV35/460

RD-MV36/460

RD-MV37/460

3×460/50Hz

RD-MV35/480

RD-MV36/480

RD-MV37/480

3×480/50Hz

RD-MV35N/220

RD-MV36N/220

RD-MV37N/220

3×380/220/50Hz

RD-MV35N/230

RD-MV36N/230

RD-MV37N/230

3×400/230/50Hz

RD-MV35N/240

RD-MV36N/240

RD-MV37N/240

3×415/240/50Hz



Front-face panel



Function diagrams



Wiring diagrams


    


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