Performance characteristics
The device combines series & parallel thyristor, professional insulating material imported with original packing and modern power & electric control technology, which is applicable to large and medium high voltage soft starting equipments with motor.
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Model : WGQH high voltage cage motor soft start / soft stop
Description: National patent owned ,digital intelligent control
1) Main function
High voltage motor will creat big shake if start or stop directly, heavily influence the motor service life and loaded equipment , some times motor burnt .
WGQH motor soft start/ stop is high-tech national patented product .
1) reduce motor start current, high efficient in saving power
2)much motor protection function (as following introduction)
3)easy install, free maintenance, save maintenance cost
4)highly increase the motor service life
5)accurate setup start torque /start current/start time/ stop time/ etc
6) can connect to computer, PLC
2)USING AREA:
suitable motor AC squirrel cage motor
Rated voltage <=10KV
Rated current 75A ~ 600A
Rated power 500KW ~11000KW
cabinet size mm 2300X1300X1560
working condition ( if special, pls clarify) temperature -20C ~ + 50C
air humidity <=90%
Altitdue normal 2000m
power frequency 50Hz +/-2Hz
3)Working principle:
1> IT adopts DSP controlling technique,power and electron technique, and multiple SCR series/parallel to motor, to protect the motor completely.
2> it has a high effect of over 96%(top to 97%)
3>:the device combines series¶llel thyristor, professional insulating material imported with original packing and modern power& electric control technology
4)Unique Feature:
1> It perfectly protect the stator and motor from faults like short circuit, over current,current limiting, over-voltage, under-voltage,over load, open-phase, 3 phase unbalance, over heat, communication fault,
2>the main circuit is equippment with component-based structure,modularized installation method, can reach the target of multiiple onver-voltage absorption and protection.
3>it multiply limiting the clamp of transient dv/dt, lighting impulse voltage,operation wave over-voltage and that of transient transition process. it has unique measure and methos to reach pressure balancing of di/dt, valve recanalizing and turn-off.
4>different current intensities are isolated perfectly, the system adopts high anti-interferential digital contactor, matched with fiber/CT isolation transforming technology, which help to avoid interference of each current, making the high voltage performance is as reliable and safe .
5>:the specially designed fault detection return and judging system can pass the detecting result to the control circuit in time and start the sound and light alarm
6>unique heat dissiipation design can effectively cool the thyristor and machine
7>it is of small volume, low power dissipation, high sensitivity, and non-contact and so on, also easy to install.
Jjr3000 series intelligent soft starter adopts international advanced electronics technology, mcp technology and modern control theory to efficiently limit start voltage of asynchronous motor. The equipment could be widely applied to fan, pump, conveyor, and compressor and other heavy load equipment. It is an excellent product to substitute traditional startup equipments such as star/triangle transition, self -coupling voltage reduction, magnetron voltage reduction and so on.
Model: Efficient 75kw to 10000kw AC wound rotor motor soft starter
1) direct starting problem
motor will create big current shake if start directly ( 5-8 times more than rated current), it makes big strike for electic grid and loaded equipment, heavily reduce motor and equipment service life,Sometimes motor burnt .so,stepless smooth start and stop is neccessory
2) intelligent WYQ6 main function
1:smooth start, without shook to equipment, extend the using life,save equipment maintain cost
2:reduce start current, reduce temperature increasing of motor, largely extend the long of motor,
3:Full protect motor and loaded equipment
3)range of application:
suitable to heavy load soft starting of wound rotor asynchronous motor,
especially in industrial or mines with unstable or lower voltage
4)unique feature:
1: low starting current: the starting current is<= 1.3Ie(A)
2: simple structure, easy for install and maintenance
3:it can start under a lower voltage, for example, start in 5.5KV when rated voltage 6KV
4: Good uniformity, applicable to coiling motor soft s tarting under any load situation, specially for heavy load starting
5: Multiple protection function like starting overtime, over stroke, over temperature,etc
6: can started continuously for 5-10 times
7: adpts worm gear and worm lifter as the transformation tool, which is stable,reliable and noiseless
5)operating principle:
For wound rotor asynchronous motor, when the grid voltage and frequency are invariant,
the connection of the starting resistor to the rotor loop will reduce the starting current and get a larger starting torque.
putting special compound electrolyte into the rotor loop of the controlled winding motor as the liquid resistance, when the stator receive the signal of the motor starting, it will change the location of the electrolyte automatically, so as to reduce the resistance value gradually. when the resistance reached the minimum level, the sensor closed and motor rotor star connected directly, then the equipment start smoothly with a low current, large torque.
suitable motor AC wound rotor motor
Rated voltage 380V~ 10KV
Rated power 75KW ~11000KW
Start current less than motor rated current 1.5 times at least
continous start time 5~10 times
cabinet size mm To demand
working condition ( if special, pls clarify) temperature -40C ~ + 50C
air humidity <=90%
Altitdue normal 2000m
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soft starter is one of industry's most featured digital soft starters. It is designed to soft start and stop standard AC induction motors from 5.5kW to 850kW with a maximum voltage rating of 500VAC, designed in accordance with IEC, UL&CSA standards and conforming with CE, EMC and LV directives.
Key Features
Voltage ratings for 3 phase systems up to 500VAC 50/60Hz
Output current from 14 to 1290 Amps, in 16 rating sizes for continuous operation from 50 - 120%
Maximum applicable motor up to 700kW/400V in Class 10, and up to 600kW/400V in Class 20
Current limiting up to 700%
Frequency range 45-65Hz
Working ambient temperature 0-55�¦C. ratings derated 1.5%/�¦C above 40�¦C
Relative humidity 95%
Alfa-numeric programming keypad with status monitoring indication
Programming Software tool
Global Standards CE, IEC, UL & CSA