Universal Frequency Converter FR-E740-1.5K-CHT For Change Current
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 kg
- Supply Capability:
- 2300 kg/month
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Specification
Fr-e740-1.5k-cht is an economical and high-performance type, 3-phase 400V power
supply, and the motor capacity is * large and suitable for three standard 4-
pole motors!
Detailed parameters of fr-e740-1.5k-cht:
1. Power of fr-e740-1.5k-cht: 1.5kw
2. Current of fr-e740-1.5k-cht: 4A
3. Voltage of fr-e740-1.5k-cht: 3-phase 380 ~ 480v
4. Frequency of fr-e740-1.5k-cht: 50Hz / 60Hz
5. Allowable fluctuation range of voltage and frequency of fr-e740-1.5k-cht:
325 ~ 528v50hz / 60Hz (plus or minus 5%)
6. Power capacity of fr-e740-1.5k-cht: 4.5KVA
7. Overload capacity of fr-e740-1.5k-cht: 150% 60s, 200% 3S (inverse time
characteristic)
8. Installation dimension of fr-e740-1.5k-cht: 140mm * 150mm * 135mm
9. Approximate weight of fr-e740-1.5k-cht: 1.9kg
10. Cooling mode of fr-e740-1.5k-cht: forced air cooling
Selection method of fr-e740-1.5k-cht:
1. Fr-e740-1.5k-cht is selected according to the following load torque
characteristics and is divided into the following three categories:
(1) Constant torque load (2) Constant power load (3) Fluid load
2. Fr-e740-1.5k-cht is selected according to the control mode and is divided
into the following five categories:
(1) V / F open loop control (2) V / F closed loop control (3) Vector
control without speed sensor (4) Vector control with speed sensor (5) Direct
torque control
Fr-e740-1.5k-cht selects the protective structure according to the use and
installation environment:
The protective structure of fr-e740-1.5k-cht should adapt to its installation
environment, which requires consideration of environmental temperature,
humidity, dust, pH, corrosive gas and other factors, which is of great
significance to the long-term, stable, safe and reliable operation of fr-e740-
1.5k-cht. It is divided into the following four categories:
(1) Open type (2) Closed type (3) Sealed type (4) Closed
type
1. Select the frequency converter according to the load characteristics,
If the load is constant torque load, Siemens MMV / MDV frequency converter
shall be selected. If the load is fan and pump load, Siemens eco frequency
converter shall be selected.
2. When selecting the frequency converter, the actual motor current value shall
be used as the basis for the selection of the frequency converter, and the
rated power of the motor can only be used as a reference. In addition, it
should be fully considered that the output of the frequency converter contains
high-order harmonics, which will deteriorate the power factor and efficiency of
the motor. Therefore, the current of the motor increases by 10% and the
temperature rise increases by about 20% compared with the power frequency power
grid. Therefore, when selecting motor and frequency converter, this situation
should be taken into account and appropriate allowance should be reserved to
prevent excessive temperature rise from affecting the service life of motor.
3. If the frequency converter wants to run with a long cable, measures should
be taken to restrain the influence of the long cable on the ground coupling
capacitance to avoid insufficient output of the frequency converter. The
frequency converter shall be selected by amplifying the first gear, or the
output reactor shall be installed at the output end of the frequency converter.
Shanghai Mitsubishi fr-e740-1.5k-cht
4. When the frequency converter is used to control several motors in parallel,
the length of the motor cable and the allowable range of the frequency
converter must be considered. If the specified value is exceeded, the frequency
converter shall be selected by amplifying the first gear or the second gear. In
addition, in this case, the control mode of the frequency converter can only be
Vif control mode, and the frequency converter cannot protect the overcurrent
and overload protection of the motor. At this time, it is necessary to add a
fuse on each motor to realize the protection.
- Q:What are the AC motor speed control methods? What are the characteristics of each
- Pressure control speed, limited speed range is limited use of variable pole speed, change the motor internal wiring speed, speed is a very speed according to the motor factory set to brand speed to speed control, change the motor input Frequency to speed, are stepless speed is now more popular
- Q:Laptop adapter heat
- Many friends to buy a laptop or laptop power, you may encounter the power did not take long to heat on the hot, and even hot to dare not get the situation, in the end is the quality of power problems or how is it? With the ever-changing notebook frequency, notebook power adapter power is also sesame flowering high, even to 100W or so, almost a small desktop power! Touch the hand, timid may be scared, obediently, is simply a hot potato! What will not fire? This is a lot of people worry! Compaq, IBM, such a large company to recover several back to the power adapter, it is because of fear that there may be defects due to power supply design, and will cause a fire!
- Q:What is the adapter?
- An adapter is a physical device that allows a hardware or electronic interface to interface with another hardware or electronic interface (adapt and without any loss).
- Q:Jd1a-40 motor speed controller and how to connect the motor
- First, variable pole alignment speed method This method of speed control is to change the stator winding winding red method to change the cage motor stator pole pairs to reach the speed control target, the characteristics are as follows: This method is suitable for production machinery which does not need stepless speed regulation, such as metal cutting machine, lift, lifting equipment, fan, water pump and so on. Second, the frequency control method Frequency control is to change the frequency of the motor stator power supply, thus changing the speed of its synchronous speed control method. Frequency converter system can be divided into exchange - DC - exchange converter and exchange - exchange inverter two categories, most of the current domestic use of cross - straight - cross frequency converter. Its characteristics: This method is suitable for the requirements of high precision, better speed performance.
- Q:5.5 kW 4-pole motor with the fastest speed can exceed the rated speed?
- The speed of the AC motor is related to the frequency of the power supply. Frequency AC frequency of 50hz, asynchronous motor rated speed of about 1440 r / min, increase the frequency of course can improve the speed, naturally can exceed the rated speed, provided that the motor load to be reduced. If you need to improve more, need to replace the inverter motor, improve the motor heat dissipation characteristics.
- Q:What is the maximum speed adjustable for a 4-stage motor with a rated frequency of 50Hz / 60Hz?
- Can be transferred to the rated frequency of 2 times, but to filter the mechanical characteristics of the motor and motor running time, to filter into the motor fever.
- Q:Will the motor suddenly stop when the inverter is suddenly powered down?
- but there are exceptions, such as head pump, water hammer effect after power failure will make the motor Reversal
- Q:If it is 8-pole variable frequency motor, enter the motor nameplate parameters in the inverter input for the 4 pole can?
- Motor brand above all, the general number of wrong is the inverter shows the speed is not right, for the speed control requirements are not high places will not be a problem, you can use
- Q:ABB frequency converter and the difference between domestic frequency converter
- Both the eyepiece and the objective lens are convex lenses with different focal lengths. The focal length of the convex lens of the objective lens is smaller than the focal length of the convex lens of the eyepiece.
- Q:Is the laptop power adapter long-haul?
- As long as the power, regardless of your access to the computer, the adapter is working. In fact, not much harm, anyway, five years of notebook life, this thing as long as not deliberately to damage, will be very durable, worse than the important parts of the computer slow. As long as the big brand, nothing Even if you broke, this thing can value a few money? In fact, the proposal or pull it, on the ground stumbling ... ...
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Universal Frequency Converter FR-E740-1.5K-CHT For Change Current
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 kg
- Supply Capability:
- 2300 kg/month
OKorder Service Pledge
OKorder Financial Service
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