Variable Frequency Drive 3.3KV 850KW VFD

Variable Frequency Drive 3.3KV 850KW VFD

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 unit

Supply Capability:: 100000 unit/month

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General Introduction :

4.16kV /6kV Series VFD
3kV /3.3kV Series VFD
6.6kV Series VFD
10kV / 11kV/ 13.8kV Series VFD

Features :

Medium Voltage Variable Frequency Drives are designed to be highly reliable with high-performance, yet easy to use.It can satisfy users' need for changing the speed of fans or pumps,as well as improve the productivity. The series are compatible with all types of three-phase medium voltage asynchronous motors. The VFDs which are compatible with medium voltage synchronous motors are in the final stage of development. series of medium voltage VFD manufactured with the new type of IGBT with microprocessor control have the qualities as follows:
1. Voltage resource VFD, direct input of 3,3.3,4.16,6,606 and 10 kV,direct output of3,4.16, 6,6.6 and10 kV,no output transformer necessary. High input power factor, low harmonic current, no power factor corrective capacities and harmonic filters required.
2. Sinusoidal multi-level PWM output waveform, no output filter required, can be directly connected to standard induction motor,no harm to the insulation of the cable or the motor, low harmonics of the motor, reduction of vibration of the shafts or the vanes,with the maximal length of the output cable of 1000m.
3. Friendly human-machine interface.
4. Modular design of the power circuits simplifies maintenance routine.
5.The medium voltage circuits are linked with the controller by the optical fibers,which keep the controller safe and away from the disturbance.
6. The complete fault monitor circuit, accurate fault alarm and protection.
7. Integrated cooling blower
8. The control logic can be conveniently changed with the help of the integrated PLC.
9. Offer both field control and remote control in monitor station, providing convenient controlling options.
10. Support most of the industrial standard protocols (Profibus, Modbus, TCP/IP, etc.)
11. Compatible with industrial standard signal of 0-10V/4-20mA
12. Able to operate at either open loop control or closed loop control status with the integrated PID regulator.
13. Complete system parameter setup function of VFD
14. Easy installation
15. Excellent performance/price ration

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: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?: That is to say that the potentiometer at both ends of the line between + 10v and -10v, tap can be given with a potentiometer to control the positive and negative!

Q:What are the differences and links between the soft starters and the frequency converters, and their respective principles and uses?: Soft starters and frequency converters are two completely different uses of the product. The frequency converter is used for the need for speed control where the output not only changes the voltage but also changes the frequency; the soft starter is actually a voltage regulator for the motor to start when the output only changes the voltage and does not change the frequency. The frequency converter has all the soft starter functions, but its price is much more expensive than the soft starter, the structure is much more complex. Soft starter (soft starter) is a set of motor soft start, soft stop, light load energy saving and a variety of protection functions in one of the new motor control device, known as the Soft Starter abroad. The softener uses a three-phase anti-parallel thyristor as a voltage regulator, which connects it between the power supply and the motor stator. This circuit, such as three-phase full-bridge rectifier circuit. When using the soft starter to start the motor, the output voltage of the thyristor gradually increases, the motor gradually accelerates until the thyristor is fully conductive, the motor works at the mechanical characteristics of the rated voltage, smooth start, reduce the starting current and avoid starting the overcurrent trip. When the motor reaches the rated speed, the start-up process ends, the soft starter automatically uses the bypass contactor to replace the completed thyristor, providing the rated voltage for the normal operation of the motor to reduce the heat loss of the thyristor and prolong the service life of the soft starter , To improve its efficiency, but also to avoid the harmonic pollution to the grid. Soft starter also provides soft stop function, soft stop and soft start the process of reverse, the voltage gradually reduced, the number of revolutions gradually reduced to zero, to avoid free-wheeling caused by the impact of torque. How the frequency converter works

Q:The inverter flat rate transferred to 29, on the submersible pump to burn the coil ?!: 1. submersible pumps are generally the problem, far away from the reflection voltage, the pump insulation breakdown, in particular, to better pump. 2. Distance away, the inverter and pump connection thicker. 3. Then on the output filter.

Q:What are the types of power adapter used in notebooks?: The regulator wants the laptop adapter to not waste energy or add harmonics to the electricity lines. The first factor is that the adapter should plug the plug without any load, and it should be as small as possible to absorb power (standby). People are accustomed to the laptop adapter inserted in the socket, but not connected to the computer, the request can prevent the loss of this situation. The second factor is the recent requirement that it requires a specific average power efficiency at different load conditions (25%, 50%, 75%, and 100%) and is implemented by the global regulatory agencies in order to facilitate compliance with the specification And reduce overhead costs. Finally, the European and Japanese mandated reduction harmonics requirements have been applied to laptop power adapters because they have exceeded these standard specifications for the 75 W input power threshold. In a sense, the mobile / universal features of the laptop adapter make it the first mass production power product subject to the IEC1000-3-2 specification.

Q:Motor a speed, the inverter will burn what is going on, the inverter is a large yuan: Inverters Have not heard of it! East yuan heard. The inverter is most likely to be damaged by the motor is running suddenly grounded, the possibility of frying the module more than eighty percent, since a little better brand will blow up! Overload, overcurrent, short circuit, lack of phase caused by damage to the inverter, then the quality of the inverter is so good, and indeed the basic functions of these inverter protection.

Q:What is the laptop power adapter? Is it the battery?: so that the book can be normal operation, or else you think the notebook is 220V Is the voltage at work?

Q:Three motors, if coupled with the governor speed, is it necessary to add the inverter?: ?Fourth, the electromagnetic speed: electromagnetic speed motor by the cage motor, electromagnetic slip clutch and DC excitation power. DC excitation power is small, usually by single-phase half-wave or full-wave thyristor rectifier composition, change the thyristor conduction angle, you can change the size of the excitation current.

Q:Three sets of batteries (540V) DC power supply U / f inverter.: It is estimated that the battery should be string - and - series connection method, and then rectifier part of the converter (which may also be caused by the switch) is actually a series of diodes in series, positive and negative after the reverse is actually the battery is Negative shorts, resulting in burning, as to burn only one of the group of a few cells, it should be string - and - string and that group, because the parallel to bear it double voltage.

Q:Three-phase motor, quadrupole asynchronous motor to 15rpm, the inverter output how many volt voltage? The 4 V: The voltage is basically the same, the inverter changes the frequency of the power supply, not the voltage.

Q:What is the number of parameters of the motor frequency of the Siemens inverter?: It is best to provide the model of the inverter Oh!

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