Medium Voltage Drive VFD 2250KW 6.6KV HIVERT-Y 6.6/243

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Medium Voltage Drive VFD  2250KW 6.6KV HIVERT-Y 6.6/243

Torque limiting function

The torque limit function is used to accurately control and limit the torque in order to prevent overload of the motor,
electricity supply system or VFD itself. This prevents damage to the motor when stationary, for example, with a
locked rotor, when starting with high inertia or high initial friction load.

 

The torque limit function can also be used to prevent or limit the return of power from the motor to the VFD in the event
of an over-hauling load causing the motor speed to exceed the commanded speed.

 

Spinning start (Flying start)

The RMVC 5100 can automatically identify that the motor is already spinning at the moment of the start request and
institute a controlled sequence to enable the drive to pick up the spinning motor without the need to stop the motor or
the risk of a system trip. The sequence requires an initial estimate of the spinning motor speed by scanning the
motor voltage while changing the output frequency. Steps are taken to reduce the time needed to estimate the motor
speed.

 

Examples of when a Flying Start would be used

∙ The mechanical load causes the motor to be spinning, even though no electric power is applied to the motor.
∙ Manual reset after trip
∙ Automatic restart after a shutdown.
∙ Restart after Low-Voltage Ride-Through (temporary loss of supply power).
∙ Restart after an automatic Power Cell Bypass.

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Q:Laptop power adapter bad what is the phenomenon?
Either the power is bad or the machine on the power supply module is bad to repair service
Q:In the case of the inverter, why can not the normal operation after removing the gearbox? The motor is 4 pole.
If there is no load, the demolition of the gearbox is the same can be run.
Q:The parameters of the inverter is 4, 6 motor can be used
The inverter is mainly composed of rectifier (AC variable DC), filter, inverter (DC variable AC), brake unit, drive unit, detection unit micro-processing unit and so on. The inverter will adjust the voltage and frequency of the output power by the breaking of the internal IGBT, according to the actual needs of the motor to provide the required power supply voltage, and then achieve the purpose of energy saving, speed control, in addition, the inverter has a lot of protection , Such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, the inverter has also been a very wide range of applications.
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:There is no inverter comes with simple PLC programming function
The inverter is an AC speed control device, like DC speed control device, DC speed is to change the armature and excitation current, and it is the input AC through the internal circuit into DC, DC and then DC, the last DC AC output, this is the original 50Hz frequency AC can output other frequencies of alternating current, because the speed v is proportional to the frequency f, so you can set the frequency of the inverter to change the speed of the control motor. It does not have its own programming function. But there are servo drives, in fact, is a frequency converter, but can handle some of their own signals, usually from the servo motor on the encoder, and then control the servo motor to achieve precise control.
Q:On the notebook power adapter output current and voltage issues
This current is the maximum current value of the adapter output, Voltage matching, of course, can be charged. It is recommended to select an adapter with an output current value that is slightly larger than the original.
Q:Quartet of the TA, TC terminals have positive and negative?
This can not be said to be positive and negative, should be called the public, TA, is the common.
Q:Lenovo g450 laptop power adapter specifications is what?
Lenovo g450 laptop power adapter specifications is what? Wrqwgp520 | viewed 4426 times Recommended at 2016-05-26 08:52:41 Best answer Lenovo Lenovo 19V4.74A G450 G470 Laptop AC Adapter: 【Power supply technical parameters】 1. Input voltage: AC100-240V.50-60Hz.1.5A 2. Output voltage: 19V 3. Output current: 4.74A 4. Work efficiency:> 85% 5. Output power: 90W 6: Input interface: Plum triangular interface 7: Output interface: 5.5 * 2.5
Q:5.5 kW 4-pole motor with the fastest speed can exceed the rated speed?
Because the frequency converter can reach 60 Hz frequency, while the three-phase power supply is the standard 50 Hz. So the inverter can make the motor speed faster than the rated 1500 rpm. The fastest up to about 1800 turn.
Q:Laptop adapter
This principle is not, try, look at how the charge situation, if you can charge, can be filled, just a long time, to no harm However, the heat may be high, long-term so, there is a risk

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