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MINE EXPLOSION-PROOF AND INTRINSICALLY SAFE VARIABLE-FREQUENCY ELECTRONIC CONTROL DEVICES
Category : Coal
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Product introduction:
Explosion-proof converter is a new frequency electronic control product that integrate into computer control technology,bus technology,explosion-proof technology, inverter technology and heat pipe cooling technology.
Environment:
Environment temperature: 0 ℃ ~ 40 ℃;
The average relative humidity: ≤95% (25℃)
Protection grade: IP54
Application range:
Applied to coal mine belt conveyor, scraper conveyor, hoist, fan speed regulating motor equipment and other harsh occasions including explosion-proof, coal dust, gas, humidity. This product has single-quadrant and four-quadrant two types, widely used in fans, pumps, belt conveyors, winches, hoist and so on.
Applied to coal dust, gas, humidity and other harsh working conditions of explosion-proof. this product has single-quadrant and four-quadrant two types, widely used in mine hoists, belt conveyors, fans, pumps, pumping stations and other emulsion speed control of electrical equipment.
Working principle:
It will make frequency power to the rectifier and voltage regulator by on-off action of power semiconductor devices, then the DC that after the rectifier voltage can transform into another electric power control device of which frequency and voltage are continuous adjustable.
Unique advantage:
1/ Advanced technology:
a.SVC vector control technology, self-tuning to identify motor, power grid parameters, high starting torque, fast response speed and high accuracy, good stability,a smooth start overloading.
b. Main circuit adopts the bi-directional inverter scheme, the grid side uses the unity power factor PWM rectifier control scheme, with renewable energy feedback grid function, realize four-quadrant operation, efficient energy conversion, low current harmonic, there is no need of power factor compensation and harmony wave suppression device, and the energy-saving effect is remarkable.
c. a clear display, capable of displaying various parameters and operation curve.
d. have synchronous control function, achieve more than one inverter synchronous control.
e. the motor side has a variety of control including frequency control, vector control, direct torque control.
f. Quick open structure, the standardized design, compact structure, easy maintenance.
2/ safe and reliable:
a. it has achieved explosion-proof certificate and security standard certificate of explosion-proof inverter which ensure the safety of use.
b. self-tuning to identify motor and power grid parameters solve poor low-speed characteristics and feedback unstable situation when the load change
c. Stared smoothly, with excellent torque characteristics and superior overload capacity.
d. fully considered the moistureproof, drip and other harsh environment design.
e. perfect protection functions, including overvoltage, undervoltage, overload, short circuit, phase failure, and overtemperature.
3/ simple structure, easy maintenance:
standardized design, compact structure, convenient maintenance.
a. Accurate fault recording function, recording several historic failure, and various electrical parameters and waveform data when the failure occurred.
b. a good man-machine interface, easy operation by button control, direct display, recording multiple historical fault and fault parameters and waveform.
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| Contact Information |
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o. 63 Taihang West Road, Jiaozuo City, Henan Province, China 454000
Jiaozuo
/ China
Tel : +86 391 2971115
Fax : +86 391 2903928
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Url :
http://en.jzhfdq.com
E-mail :
Contact Person : Zhongbo Shang
/ Sales Manager
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