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Big Pawer Electrical Technology Xiangyang Inc. Co., Ltd.

Liquid Resistor Starter, Resistor Starter, Mv manufacturer / supplier in China, offering Mv Ydq Series Liquid Resistor Rotor Soft Starter, Htr Series High Voltage Thermal Resistor Soft Starter, Easy-Start E6 Serial Soft Starter and so on.

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Mv Ydq Series Liquid Resistor Rotor Soft Starter

FOB Price: US $4,985-8,806 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $4,985-8,806/ Piece
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Production Capacity: 50, 000 PCS/Year.
Transport Package: Wooden Case
Payment Terms: L/C, T/T, Money Gram, Western Union

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Basic Info
  • Model NO.: YDQ
  • Trademark: Big Pawer
  • Origin: Xiangyang, Hubei Province
  • Starting Current: < 1.3 Times Rated Current
  • Specification: CCC, CQC
  • HS Code: 8535900090
Product Description
1   Overview
YDQ5 Liquid resistor rotor starters (hereinafter referred to as starters) are the new kind of starting devices developed for improving the starting feature of large- and medium sized wire-wound AC asynchronous motors. Having solved the problems of frequency sensitive resistor starters which are high in impact current, difficult in starting and not easy to operate, the starters of this series are suitable for the heavy-load starting of the motors of ball grinding mills, air compressors, crushers, large-sized blast fans and large-sized pumps which are used in the industrial branches of building materials, metallurgy, chemical industry, mining. They are the ideal substitutes for frequency sensitive starters and metal resistor starters.
2   Standard & criterion
GB4720-1984           electric control devices part I low-voltage electric control devices
GB4942.2-1993        low-voltage electric devices shell protection grade
GB/T5226.1-1996     industrial mechanical electric devices part I general technical condition
        GB/T13384-2008      mechanical electric products casing general technical condition
GB14048.4-2003      low-voltage switch devices and control devices
                                          low-voltage mechanical electric contactors and motor starters
3   Working condition
Upper limit of ambient temperature is no more than +50ºC, and lower limit is no less than -5ºC.
The relative humidity is no more than 85 percent. The height above sea level is no more than 2000m.
It should be placed on an indoor place without obvious shake and impact, without fire and explosive dangers and the vertical gradient is no more than 5º.
There must be no conductive dust and corrosive gas.
Power source is four-wire three-phase system of 380V/220V 20A, the undulation of voltage must be guaranteed within 15 percent of rated voltage.
Note:1)The heater needs to be installed additionally when the ambient temperature is under 0ºC over a long period of time, the user should explain it while ordering goods.
2)If the voltage of power source needs spcial design, the user should explain it while ordering goods.
4   Type explanation

Mv Ydq Series Liquid Resistor Rotor Soft Starter
4.1 Fundamental Principle
Allow the relative distance between the two parallel plates in the conductive liquid to decrease progressively up to zero through a mechanical driving device and make the resistance value run into the return circuit of motor rotor decrease continuously, so as to realize the heavy-load smooth starting of large- and medium-sized wire-wound motors.
4.2 Technical characteristics
4.2.1 The starting current is low but constant without impact on power network; the starting current is no more than 1.3 times the rated current. Therefore the requirements of the heavy-load starting of motor for transformer capacity can be decreased, reducing lump sum investment.
4.2.2 It is smooth in starting, so as to lower its impact on the mechanical equipment, and the service life of the mechanical equipment and motor can be prolonged by about 30 percent.
4.2.3 It is high in its heat capacity, and it can start for 3~10 times continuously.
4.2.4 It can still start under low voltage state. Smooth start can be ensured so long as the voltage of the power network can guarantee the motor to operate normally.
4.2.5 It is simple in structure, easy to maintain. Its reliability is more superior than that of frequency sensitive, oil-soaked type resistors.

TypeRated Motor capacity(KW)Resistor box temperature(ºC)Circulation pump(KW)Cooling water(t/h)
YQT3-220below 220<550.372
YQT3-315below 315<551.13.5
YQT3-450below 450<551.15.0
YQT3-630below 630<551.16.5
YQT3-800below 800<552.210
YQT3-1000below 1000<552.212
YQT3-1400below 1400<554.015
YQT3-2000below 2000<555.520
YQT3-2500below 2500<557.528
YQT3-3200below 3200<551138

Type Appearance dimension mmInstallation dimension mm
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