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Voltage protector

RM-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
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 50V~450V

Rated frequency

50/60Hz

Overvoltage(U>)setting range

220~300V

Undervoltage(U<) setting range

120~210V

Hysteresis

2%

Reset/start delay

Ts: 5s~600s

Overcurrent faults trip delay range

Ta: 5s~600s

Overvoltage(U>) trip delay

<0. 5s

Undervoltage(U<) trip delay

≥120V: 0.5s,<120V: <0.1s

Overcurrent(l>) trip delay

ln<lr *<lmax: Ta; Ir * ≥lmax:≤0.1s

Voltage measurement accuracy

≤1%(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 temperature

-5℃~40℃


*Operating current value

 

 

 

Technical parameter

Setting range

Step

Factory setting

Overvoltage trip value

220V~300V

1V

250V

Undervoltage trip value

120V~210V

1V

170V

Reset/start delay

5s~600s

1s

15s

Overcurrent faults trip delay

5s~600s

1s

90s


Current specification

25A

32A

40A

50A

63A

Rated operating current(ln,A)

1-25

1-32

16-40

16-50

16-63

Maximum operating current lmax ( A ,within 10min)

32

40

50

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