3/3.3kV/6/6.6kV/10/11kV Compact AC VFD Drive
- 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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Working Principle
WLD-HVF series medium voltage inverter adopts Power Units in series and overlapping technology to obtain MV directly by means of overlap wave. Low voltage power unit is an actually improved motor variable frequency inverter, which takes full advantage of mature technology. WLD-HVF belongs to High-high voltage source inverter, the customer can connect high voltage (3/6/10KV) directly to WLD-HVF, then WLD-HVF output high voltage (3/6/10KV) correspondingly. WLD-HVF consists of phase-shifting transformer, power unit cabinet and controller, for example:
6KV Series: Consisting of 15 AC power units with 690V. Every 5 power units are connected in series to form one phase (phase voltage 3450V), 3-phase Y-type connection, so the Line voltage can reach to 6KV.
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 pre-charge technology
The pre-charging function can effectively control the charging speed of the capacitors, and thus charging shock can be prevented. Together with IGBT intelligent driving technology, the innovations can double the lifetime of the capacitors, from 5 years to 10 years for instance. The maintenance cost can be lowered significantly.
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.
Patentedventilation and heat dispersion method
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: A 4-pole AC motor into a 2-pole AC motor, the motor is controlled by the inverter, to make the maximum speed of the 2-pole motor and the original 4-pole
- The upper limit frequency transferred to 25HZ, the number of poles changed to 2, try to run when the motor speed test
- Q: 380V motor addition to the inverter, but also how to change its speed?
- Rotary motor rotor series resistance adjustable speed. 4. Change the slip electromagnetic speed (slip motor)
- Q: The laptop power adapter is burned
- If the power adapter is burned, you should check the laptop's power outlet, if the socket short circuit will lead to the power adapter burned. Maintenance method is not a power adapter and only use the battery boot try, can not boot, then the laptop itself is a problem, to send maintenance department maintenance; if you can boot, you can confirm that the power outlet is short, can be opened Laptop case, swap a new power outlet to solve the problem.
- Q: Pump frequency converter instantaneous restart and restart the problem
- How the frequency converter works: The frequency converter is a power control device that transforms the power frequency power supply into another frequency by the on-off function of the power semiconductor device. We are now using the inverter is mainly used to pay - straight - cross mode (VVVF frequency conversion or vector control frequency), the first frequency AC power through the rectifier into a DC power supply, and then convert the DC power supply frequency, voltage can be controlled AC power supply to the motor. The circuit of the inverter is usually composed of four parts: rectifier, intermediate DC link, inverter and control. Rectifier part of the three-phase bridge uncontrollable rectifier, inverter part of the IGBT three-phase bridge inverter, and the output for the PWM waveform, the middle of the DC link for the filter, DC energy storage and buffer reactive power.
- Q: What is the working principle of high voltage electrodes and frequency converters?
- High voltage inverter from high - low - high; low - high; high - high points. The following are the same as the " High-low-high-mode high-voltage inverter is the high-voltage power transformer with a step-down, with low-voltage inverter control, and then step up the transformer voltage to the voltage we use, the supply of high-voltage motor.
- Q: ASUS notebook power adapter can be universal? is it?
- Yes, see the same parameters as the interface on the line
- Q: Laptop computer about electricity no electricity, is the power adapter problem?
- This situation is definitely not about what power off, if it is really about electricity no electricity, then your laptop is a one-time shutdown, rather than the screen flashing. I think this situation is more like a laptop screen lamp problem. Is unlikely to be a power problem. The screen flashes from the surface that there may be enough current. If the adapter can not provide enough current for the notebook, then the notebook will be over-current protection, which automatically shut down. You can find an adapter with the same output voltage as your adapter, the output power is greater than or equal to your adapter other adapter, if the situation remains the same, then it is certainly the problem of the lamp. But the inferred will not be a power problem.
- Q: What is the laptop adapter
- 4, the working principle: the use of unstable power supply switching power supply principle through the conversion circuit into the notebook computer needs constant voltage DC, to the laptop computer power supply and charging; it is worth noting that: this conversion circuit, there must be protection circuit (Overcurrent protection circuit, overvoltage protection circuit short circuit protection circuit, etc.), to prevent accidents, the protection of the laptop will not burn.
- Q: The motor is 2 pole with the inverter frequency to 50hz why the speed is only 1500 rpm
- The speed displayed on the display may be the speed of the deceleration or transmission. It is also possible that your inverter parameter ratio is not set, you need to modify and adjust, you want to help.
- Q: What is the meaning of the bipolar polarity in the inverter ah There is a +10V signal input is a -10V What is the meaning of ah?
- Analog signal input: Reference setting Input voltage Positive terminal (0 --- 10V)
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3/3.3kV/6/6.6kV/10/11kV Compact AC VFD Drive
- 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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