Brand:
WANTAIItem NO.:
Low-voltage SeriesOrder(MOQ):
1Payment:
T/TProduct Origin:
ChinaColor:
BlueShipping Port:
ShanghaiLead Time：
90 DaysWeight：
0.5T-3.0T1. Product Introduction
1140V or 660V mining explosion-proof and intrinsically safe AC frequency converter is mainly used in coal mines with explosive hazardous environments such as coal dust and gas. As a frequency conversion speed regulation for AC motors, it is suitable for asynchronous motors and permanent magnet synchronous motors. It has the function of starting and rotating. It has the characteristics of large torque,high speed regulation accuracy,long power supply distance,energy saving and high effciency, safety and reliability.
The inverter unit of this series of 1140V products adopts NPC type three-level topology, which has the advantages of large output capacity, high output voltage, few voltage spikes and pulses, and low harmonic content of current output.
It can be widely used in coal mine underground winches,belt conveyors,scraper conveyors,crushers,transfer machines, elevators,water pumps,emulsion pumps,coal feeders and other equipment.
2. Features
● Using advanced SVPWM space vector PWM modulation control, the output torque is large,150% of the rated torque can be reached at 0.5Hz, and the maximum torque output can reach 220%.
● The frequency converter adopts a three-level inverter topology, with small input and output harmonics, meeting the requirements of EMC standards; the built-in output filter unit reduces the motor insulation stress,and the output cable can be up to 3000 meters long.
● Excellent over-curent suppression and over-voltage suppression functions to avoid frequent failures and meet the requirements of complex working conditions.
● The builtin insulation monitoring system can monitor the insulation status between the inverter and the motor in real time to achieve effective leakage protection.
● A daptive power balancing function can provide precise load distribution control,and the power imbalance is less than 2%.
● Built-in PID regulator can match various sensors to form closed-loop control
● Full Chinese display interface,matrix keyboard operation,intrinsically safe design,safe and reliable
● External intrinsically safe Ethernet port to facilitate program debugging and data transmission
● Meet the communication requirements of smart mines and have standard communication interfaces
★ Multi-parameter data collection: The equipment is capable of real-time collection of more than 80 electrical parameters such as voltage,current,power and harmonic data; it cooperates with the industrial big data platform to automatically generate historical trend curves such as curent, voltage and power of load equipment; according to different regions, Comparative analysis of energy consumption in different periods to achieve accurate energy consumption management
★ Predictive maintenance of equipment: Based on the analysis of various electrical parameters of the load equipment, the industrial big data platform is used to build an equipment failure prediction model, and the operating status of the equipment and the priority of equipment maintenance are analyzed in a timely manner to realize the predictive maintenance function of the load equipment.
★ Multiple communication interface support: 485 interface, Ethernet interface, wifi, 5G, 4G and other communication interfaces; supports Modbus, MQTT, HTTP, IEC-60870 and other communication protocols.
3. Technical parameter
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Product name |
Flame-proof and intrinsically safe dual power supply and dual frequency converter speed controller for ventilators |
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Rated input voltage(V) |
AC660V,AC1140V;50Hz |
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Voltage fluctuation:±15%Frequency fluctuation:±2.5% |
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Rated output characteristics |
Three-phase AC0~660V,AC0~1140V,0.5~50Hz(frequency up to 400Hz) |
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Overload capacity |
150%rated current for 60s;200%rated current for 3s |
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Control motor form |
Asynchronous motor,permanent magnet synchronous motor,permanent magnet synchronous electric drum |
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Control motor form |
Asynchronous motor,permanent magnet synchronous motor,permanent magnet synchronous electric drum |
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Modulation |
SVPWM space vector PWM modulation |
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Control method |
Vector control, VF control |
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Main control |
Frequency accuracy |
Digital setting:maximum frequency ×±0.1%;analog setting:maximum frequency ×±0.5% |
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Frequency resolution |
Digital setting:0.01Hz;Analog setting:Maximum frequency×±0.1% |
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Slip compensation |
Automatic slip compensation range:0~150%,open-loop speed stability accuracy 0.5%,closed-loop speed stability accuracy 0.02% |
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Carrier frequency |
Self-tuning based on internal temperature,manually adjustable range 0.7~16kHz |
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Acceleration and deceleration curve |
Two types of curves: straight line and arbitrary S-curve; seven acceleration times (multi-step speed) |
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Display operation display |
Rated frequency,output frequency,voltage,current,power,motor speed, load rate,etc. |
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Faultstatus display |
Overvoltage, undervoltage, overcurrent, overload, overheating, phase loss, short circuit, stall, leakage, etc. |
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Show |
Braking method |
Feedback braking, DC braking |
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braking torque |
150%(up to 220%) |
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Brake |
Starting torque |
More than 150%,zero speed torque is adjustable from Oto 100% |
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Speed control range |
Open loop1:100,closed loop 1:1000(relative rated speed) |
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process control |
Built-in PID regulator can form a closed-loop control system through various transmitters |
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Automaticvoltage adjustment |
When the grid voltage changes,it can automatically and appropriately change the basic frequency to protect the motor load capacity. |
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Frequency setting |
Digital setting, analog setting, control panelsetting, serial communication setting, power balance setting |
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Run command given |
Control panel given, external terminal given, serial communication given |
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Analog input/output |
0~10V,4～20mA |
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Main control operation |
Digital input |
10 programmable inputs to achieve far/near control,forward/reverse rotation, start/stop,and preset speed |
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Analog output |
Speed,load,bipolar load,and PID variables can all be connected to external instruments |
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Switching output type |
5 relay outputs(250V/10A contacts) |
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Switching output |
Operation output,fault output,remote control status output |
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Communication function |
Modbus-rtu,Modbus-tcp |
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Usage environment |
Application scope |
Dangerous places with gas,coal dust and explosive gas |
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Altitude |
The altitude is not less than-1500m and not more than 2000m (over this altitude, derating is required) |
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Ambient temperature |
-20℃~40℃ |
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Relative humidity |
5%~95%RH(no condensation) |
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Protective function |
Overvoltage, undervoltage, overcurrent, overload, overheating, phase loss, short circuit, stall, leakage, etc. |
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Explosion-proof signs |
Exdb[ib Mb]l Mb |
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Cooling method |
Circulating water cooling(or external water supply cooling) |
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4. Size
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Power |
Size(L*D*H)(mm) |
Weight(T) |
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22～45kW (Two Quadrants) |
900×800×1150 |
0.5 |
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90~400kW(Two Quadrants) |
1682×1072×1305 |
1.5 |
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90~400kW(Four Quadrants) |
1950×1175×1305 |
1.9 |
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315~500kW(Two Quadrants) |
1855×1175×1315 |
1.8 |
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315~500kW(FourOuadrante |
1855×1175×1315 |
2.2 |
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500~710kW(Four Quadrants) |
1990×1225×1300 |
2.0 |
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500~710kW(Four Quadrants) |
2250×1240×1480 |
2.5 |
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800~1120kW(Four Quadrants) |
2462×1181×1444 |
2.5 |
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800~1120kW(Four Quadrants) |
2462×1181×1444 |
3.0 |
Tel : +8618355333980
Tel : +840949930668(CDCP)
Email : contact@wantaiglobal.com
Address : Intersection of Guohuai Road and Chunshen Street, Shannan New District, Huainan City, Anhui province, China
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