China Frequency Control Speed/VFD/VSD/VVVF/ Frequency Inverter
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- Loading Port:
- Dalian
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 10000 unit/month
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General Introduction
From the above, different voltage output, the quantity of power units is different, but the working theory is exactly identical. All power units receive the indicator from same central process controller. There is a phase difference in secondary windings of transformer which provide energy for power unit, in this way, most of the harmonics current caused by independent power unit will be eliminated, so the primary winding current is approximately sine wave, the harmonics current flowing into power grid are so few, even under the rated load, the harmonics contents is lower of 3%.
The power unit is AC-DC-AC structure, equivalent to a low-voltage power source inverter of 3-phase input single-phase output. The rectifier side is diode three-phase full bridge circuit and the IGBT inverter bridge can be controlled through sine PWM mode to output single-phase AC. All power units are fully identical in structure and electrical performance, very easy for maintenance and replacement.
Technical Features
Voltage source High-high frequency inverter, it can realize No-step speed regulation, which makes the typical motors into intelligent motors.
Low harmonics input and high power factor, the typical value for power factor is 0.95 through whole speed regulation, even more higher, no need for power factor compensation.
WLD-HVF output few harmonics, the motor does not generate extra heat and noise.
Modularized design of power units, interchangeable and easy to produce and repair, the equipment can find any fault exactly based on advanced diagnostic procedures in MPU.
The inverter still can operate even the faults for part of power units exists, if there are faults happen for inverter, the system can switch to power frequency through bypass function.
Applicable to all kinds of power grid at home and abroad and suitable for typical high voltage motor.
Colorful touch screen, easy to operate and maintenance.
Able to realize remote control, DCS operation and communications with Host, and support all kinds of communications interfaces such as CAN, Profibus, Modbus, RS232, RS485 etc.
Applied latest components, master control chip adopted TI’s DSP F28335 and ALTERA’s FPGA of EP3C to realize powerful processing capacity; Sampling adopted AD’s AD7606 with 16 bit to ensure control accuracy of the system.
The switchgear can satisfy safety requirements, and the pressure-relief channel of high voltage switch can ensure safe use of operators.
Energy Saving Fields
Power Generation: Induced draft fan, forced draft fan, condensate pump, feed pump, primary air fan, secondary air fan, booster fan, circulating pump, mill fan, slurry pump etc
Cement: draft fan, high-temperature fan, air blower, dust collection fan, grinding machine etc.
Metallurgy: blast furnace blower, slurry pump, feed water pump, dust fan, compressor etc.
Petroleum&Chemical: Water injection pump, crude oil pump, Compressor, fan, circulation pump, etc
Urban water supply: Water delivery pump, water intake pump, water supply pump, sewage treatment industry, self-fractionating pump etc
Minerals & Mining: Mud pump, ventilation fan, belt conveyor, slurry pump etc
Others: Loads such as fan, pump and compressor in pharmaceutical, paper making and wind tunnel test
- Q:Old printing machine transformation, 37KW6 polar frequency motor with brake, inverter 55KW, now found running,
- The frequency is too low or the brake gap is small
- Q:ASUS and dell notebook power adapter can be universal?
- You do not indiscriminate use as well, we recommend that you contact the after-sales department for your service.
- Q:If it is 8-pole variable frequency motor, enter the motor nameplate parameters in the inverter input for the 4 pole can?
- If the control accuracy is not high, then you can use the ordinary control. Since the choice of the inverter, it is best based on the motor nameplate to set parameters to ensure the stability of the motor running
- Q:How does the laptop's power adapter open
- First put the power adapter on a clean desktop, with electric knife to the upper and lower cover along the edge of the gap slowly pry open, you can also use the hammer gently tapping the back of the electric knife, so you can turn on the laptop power adapter
- Q:Is the laptop power adapter long-haul?
- As long as the power, regardless of your access to the computer, the adapter is working. In fact, not much harm, anyway, five years of notebook life, this thing as long as not deliberately to damage, will be very durable, worse than the important parts of the computer slow. As long as the big brand, nothing Even if you broke, this thing can value a few money? In fact, the proposal or pull it, on the ground stumbling ... ...
- Q:6-pole motor, speed 8000 rpm, corresponding to the frequency converter output frequency is how much?
- Such a high speed estimated motor can not reach, to increase the gearbox Specific algorithm: n = 60f / p P is the number of pole pairs, f is the frequency. The pole pair number of the 6 pole motor is 3. F = n * p / 60 = 8000 * 3/60 = 400 Hz.
- Q:What is the difference between the electronic governor and the frequency converter on the motor speed regulation?
- Probably the wider range of frequency converter applications! There is a more comprehensive protection of the motor on the inverter
- Q:How do I protect the inverter when the three-phase two-pole motor is running?
- Three-phase two-pole motor running inverter protection, should be based on the protection of tips, check the corresponding manual to deal with. When the inverter protection has a corresponding protection tips (such as over-current, over-voltage, speeding, stall ... ... etc.), the product manual will generally give the corresponding protection tips. According to these measures to check, deal with, you can solve the problem.
- Q:Delta VFD-A frequency converter motor number of poles set
- The frequency parameters of the inverter motor are not set, because the inverter will automatically detect the number of pole pairs of the motor during operation, and it will not need to be set.
- Q:What is the maximum speed adjustable for a 4-stage motor with a rated frequency of 50Hz / 60Hz?
- Asynchronous motor speed depends on the maximum speed of the bearing, theoretically look at what the choice of bearing, above the rated speed into the constant power area, with the increase in speed torque becomes smaller, but the motor constant power area is limited, usually ordinary asynchronous motor rated Voltage is 380v motor constant power area is the motor rated speed of 2.5 to 3 times, if you want to get a higher constant power area can be reduced by the way to reduce the rated voltage constant power area, if you do not consider the reasons for mechanical bearings, asynchronous motor Speed depends on what speed the motor torque can overcome the resistance to maintain the speed.
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China Frequency Control Speed/VFD/VSD/VVVF/ Frequency Inverter
- Ref Price:
-
- Loading Port:
- Dalian
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 10000 unit/month
OKorder Service Pledge
OKorder Financial Service
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