High Voltage Frequency Drive 6.6KV 450KW VFD

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General Introduction

No need of extra output filtering device
Directly driving the general medium voltage synchronous or asynchronous motor and the temperature of the motor will not be increased.
No need of motor derating operation
No dv/dt damage to insulation of motor and cable
No torque ripple induced by harmonics, and the service life of motors and mechanism devices can be extended
No cable length limited when voltage drop is in the allowable range.

Besides the above advantages, medium voltage variable frequency drive has the following functions :

Protection of overload, overheat, over-current, open-phase, grounding, over-voltage, negative sequence.
Current limited function
Interlock protection of control power supply
Two sets of control power hot standby for redundancy
Power cell by-pass function
Control cabinet automatic bypass function
Cabinet door opening alarm function
Lock-phase function
Synchronizing switch function between variable frequency and power frequency (optional)
Soft start of motors, no impact to mechanical equipment and network
Voltage source High-high variable frequency drive, it can realize No-step speed regulation, which makes the typical motors into intelligent motors.

Medium voltage variable frequency drive has the following features:

High quality power input: By phase shifting of the secondary winding and multi-pulse diode rectifier, isolated powers can be acquired and supplied for power cells. (18 pulses for 3/3.3kV, 30/36 pulses for 6/6.6kV, 48/54 pulses for 10/11kV) By using the technique of multi-pulse rectifier, the harmonic current could be eliminated greatly.
Power cell communicate with controller through optic-fiber, completely electric isolated
Inner set PID regulator, can realize running in closed-loop
Multiple communication methods with host computer, isolated RS485 interface, standard MODBUS RTU, communication protocol, PROFIBUS DP (optional), industrial Ethernet communication protocol (optional)
Accurately fault records, can inquiry information and locate fault
Compact construction, reasonable layout (can do customer-design)
Very good protective design to dust, ferrum pulveratum, acid mist, moisture etc.
Bypass cabinethas a function of "five-protection", meanwhile, it has a pressure relief channel to ensure the safety of operators.
Modularized design of power units, interchangeable and easy to produce and repair.

Specification

Model	A03/050~ A03/100	A03/100~ A03/175	A03/175 ~A03/220	A03/220~A03/400	A03/220~A03/610
Capacity(kVA)	250~630	630~900	900~1150	1150~2000	2000~3125
Rated output current (A)	50~100	100~175	175~220	220~400	400~610
Motor power (kW)	200~400	400~710	710~900	900~1600	1600~2500
Input frequency	45Hz~55Hz
Rted input voltage	3000V±10%
Input power factor	0.95 (>20%load)
Efficiency	0.96 with rated load
Output frequency	0.5Hz~120Hz
Frequency resolution	0.01Hz
Overload capacity	120% 1 min, 150% immediately
Analogue input	0~10V/4~20mA
Analogue output	0~10V/4~20mA
Acceleration/deceleration time	0.1~3000s
Digital output/input	expanded according to requirement
Ambience temperature	0~40°C
Storage/transport temperature	-40~70°C
Cooling	air cooling
Ambience humidity	<90% without condensation
Altitude	<1000 m
IP class	IP20
Size(mm)(W×H×D)	3300×2480×1200 3900×2480×1200		4900×2480×1200 6000×2580×1200		6000×2580×1300
Weight (kg)	3000 ~5000		5000 ~7300		7300~9200

Q: Three-phase asynchronous AC motor speed control method: Second, the frequency control method Frequency control is to change the frequency of the motor stator power supply, thus changing its synchronous speed control method. Frequency converter system can be divided into AC - DC - AC inverter and AC - AC inverter two categories, most of the current domestic use - cross - frequency converter. Its characteristics: High efficiency, no additional loss during the speed control process; Wide range of applications, can be used for cage type asynchronous motor; Speed ??range, the characteristics of hard, high precision; Complex technology, high cost, maintenance and repair difficult. This method is suitable for applications requiring high precision and better speed performance.

Q: Laptop power adapter is broken, which brand is better domestic: What brand of your laptop brand? It is best to be original,

Q: Laptop computer about electricity no electricity, is the power adapter problem?: "The adapter light is bright" is just a matter of line between the AC power supply and the power adapter, and the power adapter to the computer that line may be bad or the computer interface is not good. Practice shows that the adapter's computer interface where the line is most likely broken

Q: Laptop power adapter (no power supply, but indicator light): Notebook power adapter can not charge, but the indicator light does not light the common reasons are: 1, the power adapter is broken or the connector is broken. 2, the power adapter output problem, no output or output is too low, can not give the computer charge. 3, the notebook charging interface is broken, not into the electricity charge. 4, the notebook power management circuit out of the fault, resulting in can not charge.

Q: Huichuan frequency converter drag a 4-kilowatt four-pole motor to change the six pole can?: Change 6 will only be slower, the fan is no longer role. The frequency converter has a power parameter, as long as the motor is less than or equal to this power can be.

Q: On the notebook power adapter output current and voltage issues: This look at your computer is what brand if it is DELL may not be charged, some other brands can be used with some can not, if you can use the charge can then only charge time will be longer than the original power supply, the computer no effect, The current is not bigger than the original big line for a long time on the battery and the motherboard is not good!

Q: Is the laptop power adapter long-haul?: Oh, the power adapter is a transformer, we use the electricity is 220, after it will be converted into a suitable computer voltage, or notebook can not withstand 220V, so as long as the power inside the transformer will work, If you do not have a computer, it is best to unplug the plug on the power outlet, even if the computer has to pull out from the outlet, or will have an impact on the life of the adapter.

Q: Delta VFD-A frequency converter motor number of poles set: According to the actual needs of the motor To provide the required power supply voltage, and then to achieve the purpose of energy saving, speed control, in addition, the inverter there are many protection features, such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, frequency conversion The device has also been very widely used.

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: The laptop's power adapter can be used on a desktop computer: that is the adapter is only one output input desktop machine needs a lot of different The interface can not be used completely Well

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