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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Item specifice
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:The laptop power adapter is burned
- You this situation or the first adapter to try, it is likely that the adapter power shortage. If you change the adapter or so, then your problem is big, there may be your laptop to protect the isolation circuit and the charging circuit is a problem, in the insurance repair is free, if the insurance, and to be afraid of a little fear Small expensive, the adapter to buy a cottage on the line, as long as tens of dollars.
- Q:Is the speed of the motor controlled?
- Armature for the cast steel made of cylindrical structure, which is connected with the squirrel cage induction motor shaft, commonly known as active part; Pole made of claw-shaped structure, mounted on the load shaft, commonly known as the moving part. The active and slave parts are mechanically free of any contact.
- Q:5.5 kW 4-pole motor with the fastest speed can exceed the rated speed?
- Can not be exceeded Although the inverter can run out of the motor rated speed as the motor will soon burn You want your running speed of 2m / s you have to run 5m / s so go eggs do not pull the
- Q:The inverter is running independently
- Principle of operation The main circuit is to provide asynchronous motor to the frequency conversion power supply part of the inverter, the main circuit of the inverter can be divided into two categories: voltage is the voltage source of the DC converter for the exchange of the inverter, DC circuit filter Is a capacitor. Current type is the current source of the DC into AC inverter, the DC loop filter is the inductance. It consists of three parts, the frequency power supply is converted to DC power "rectifier", absorbing in the converter and the inverter voltage ripple "smooth circuit." The basic composition of the rectifier unit: the fixed frequency of alternating current converted to direct current. High capacity capacitance: store converted energy. Inverter: high-power switching transistor array composed of electronic switches, the DC into different frequency, width, amplitude of the square wave. Controller: According to the set program work, control the amplitude of the output square wave and pulse width, so that superimposed as an approximate sine wave AC, drive AC motor.
- Q:Laptop power adapter in the ring is how is it?
- Is the voice of the transformer, do not have to buy, will be used on the line.
- Q:A water supply project, how to choose electrodes and frequency converters, such as giving a 7-storey water supply
- 3. Take a doorway as an example: choose DN50, N = 7.5Kw enough. About 50 cubic meters / H.
- Q:Laptop power adapter problem
- Third, since the book is very old, the original factory may not have such a transformer spare parts, then a reasonable idea is to let this book off, rather than the provincial money to take their own little life joke, a notebook and then expensive It will not be more expensive than your life, the money is very unreasonable province. A notebook with a decade is also completely considered the best use of the matter, you are stingy stingy Ye Hao, there are emotional sustenance worth mentioning, it should be eliminated or out of it.
- 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 is the adapter?
- USB adapter Buy a USB adapter: http://cew.earch14 /usb-adapters Audio-Video Adapter: Also offers the following types of audio-video adapters: O DVI to HDMI audio video adapter O DVI to VGA audio video adapter O RCA adapter O SCART adapter O XLR adapter O audio adapter
- Q:On the laptop power adapter problem
- Notebook power adapter matching the principle of the principle is: the input voltage to meet the requirements of the domestic exchange is 220V; output voltage and the original with the same output current must be greater than or equal to the original adapter output current, your future output current is less than the original will appear Power from time to time unexpected shutdown caused by increased data loss, the battery charge is not easy to rush to cause the battery aging process, the other adapter long-term work will increase the heat caused by increased safety risks.
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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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