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RD-MVA

Microcontroller based
Double 3 digit display for operating voltage value
Protect electrical device against overvoltage and undervoltage
Reset/start delay adjustable(5~600s)
Voltage measurement accuracy ≤1%
Parameters setting by keys
LEDs indication for overvoltage and undervoltage faults
3 Module, DIN Rail mounting
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Voltage protector is designed to protect home appliances (refrigerators, air conditioners, washing machines, television, video and audio equipment, etc.) against the unacceptable voltage fluctuations and unallowable current. The rated current can be set.

Technical data


Rated supply voltage

AC 220V

Operation voltage range

AC 100V~400V

Rated frequency

50/60Hz

Overvoltage(U>)setting range

220~280V

Undervoltage(U<) setting range

140~210V

Hysteresis

U:5V; <U:3V

Reset/start delay

Ts: 5s~600s

Overcurrent faults trip delay range

Ta: 5s~600s

OvervoltageU>) trip delay

<0.5s

UndervoltageU<trip delay

≥120V:0.5s,<120V: 0.1 s

Overcurrentl>) trip delay

ln<lr *<lmax: Ta; Ir *≥lmax:≤0.1s

Voltage measurement accuracy

2%(over the whole range)

Rated insulation voltage

400V

Output contact

1NO

Electrical life

105

Mechanical life

106

Protection degree

IP20

Pollution degree

3

Altitude

≤2000m


●Operating current value

 

 

 

Technical parameter

Setting range

Step

Factory setting

Overvoltage trip value

220V~280V

1V

250V

Undervoltage trip value

140V~210V

1V

170V

Reset/start delay

5s~600s

1s

5s

Overcurrent faults trip delay

5s~600s

1s

90s


Current specification

25A

32A

40A

50A

63A

Rated operation current(ln,A)

1-25

1-32

5-40

5-50

5-63

Maximum operating current lmax ( A ,within 10min)

32

40

40

60

80

Max. power of load(kW)

5.5

7

8.8

11

13.9

Maximum wire size(mm2)

6

8

10

16

16


Front panel



Function diagrams



Symbol



Wiring diagram



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