Variable Frequency Inverter/VFD for fan and Water Pump
- Ref Price:
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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.
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.
Patented automatic recovery technology
With real-time monitoring, the VFD system can identify the causes of power cell bypass, and automatically restarts once it detects the problems are fixed. It ensures equipment to operate continuously and stably when the bus power supply has instantaneous failure.
Our VFD’s ventilation system is centralized and vertical. It has significant advantage over the distribution type in terms of temperature field control, air flow distribution, and wind speed uniformity. Since the capacitor units are located at the ventilation ducts, it is estimated that the lifetime of capacitor can be doubled, and thus the overall system service time is prolonged with this cooling mechanism.
- Q: How do I protect the inverter when the three-phase two-pole motor is running?
- A: At this time to put the heart in the stomach, wait and see the change, what do not move (to prevent the accident to expand), until the motor stops, and then confirm, what kind of protection: alarm (alarm automatically after the release) or failure , Such as: over-voltage, overload, over-temperature, etc., and then the right medicine; inverter in the run which is not allowed, forced parking stop. Otherwise it will cause serious damage to the inverter.
- Q: What is the application of variable frequency speed control?
- Frequency control speed ratio is relatively large, in other words, the speed is accurate, smooth speed. Widely used, the basic works can be used
- Q: What are the differences and links between the soft starters and the frequency converters, and their respective principles and uses?
- The soft starter is activated by adjusting the voltage and current, and the frequency converter starts the motor by changing the frequency of the power supply. The soft starter can theoretically smooth and gradually start the motor to the maximum speed. No impact current (ordinary start-up current is 6-7 times the rated current) The inverter is best suited for tap water and fans, etc. The soft starter is not suitable for everything except for heavy load start.
- Q: Lenovo laptop power adapter side of the feet which is positive
- Power adapter is a small portable electronic equipment and electrical and electronic power supply conversion equipment, generally by the shell, power transformer and rectifier circuit, according to its output type can be divided into AC output and DC output type; by way of connection Divided into wall and desktop.
- Q: Notebook plug in the power adapter lights, but can not open the machine
- This is a contradictory problem: First, the power adapter lights because the power is good, but does not mean that the computer is good; Second, can not open the machine with the power adapter is lit, it is your computer reasons. Recommendation: Check the computer hardware. Asked: But the battery can be used to start ah answer: Remove the battery plug in the adapter or put the battery installed plug in the adapter, if you can not open the machine, then it is a hardware conflict. The solution to the hardware conflict is that you try another adapter. Asked: the battery removed to die, but as long as there is a battery can answer: it shows that your adapter is bad. Asked: the more magical is plug in the adapter and the battery, the battery will not consume Answer: get you electronic city so that they give you a test. You can say to buy an adapter, and then try, you can use the words to buy, can not use the words and then think of other methods.
- Q: Speed regulation method of three - phase asynchronous motor
- This is the two-speed motor 1 will be the UI VI WI connected to the third phase of the remaining joint empty at this time for the four 2 U2 V2 W2 connected to the other three junctions at this time for the two levels This is the angle - there are many binary speed In addition there are three-speed motor in this no longer introduced The number of variable pole pairs can be varied, but the more variable the number of logarithmic materials Like a two-speed motor with a set of windings Three-speed motor has two sets of windings So the current single-board frequency conversion speed up
- Q: There is no inverter comes with simple PLC programming function
- Inverters are generally digital input, and analog input, a digital output, etc., can also be controlled by means of communication. Digital input can be used as a positive and negative and reset the alarm, the analog input can be given as a speed, and how to use the inverter to see the specific model. Take the Siemens inverter, MicroMaster420,567 terminal 3 digital input, 8 for the 24V, 9 for the 0V, you can usually open the point on the 8th 24V back to 567, as a digital input, you can also directly into the switching power supply Of the 24V, but the switch power supply 0V and 9 terminals connected to the potential, or the inverter may not be able to identify the outside world 24V. (DP communication, USS communication, etc.), with the terminal input on the P0700 = 1, the user can set the command source, the panel can be input, 2, P0701 to P0703 corresponding to the three digital functions: parameters set to 1 forward, 2 for the reverse ... ... a lot of features and control methods, see the corresponding product manual like
- Q: How to choose a Siemens inverter for a 5.5KW three-phase motor (2 pole)?
- Beijing easy to create a website with Siemens inverter selection manual! You can log on online! Or contact them directly, they will give you professional answers!
- Q: Whether the inverter can control the start and stop of the horizontal monopole centrifugal pump
- Can be installed by a simple float level control to achieve, the general frequency is to constant pressure, of course, start and stop is completely controlable Oh. It's good for the pump to start the speed change
- Q: How to learn the inverter debugging and design parameters
- You can find the basic inverter manual, see a few times to try, under normal circumstances, the inverter on the use of manual functions such as research to understand that most of the applications are no problem.
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Variable Frequency Inverter/VFD for fan and Water Pump
- 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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