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:Laptop adapter heat
- In fact, as long as the power adapter temperature is within the design range, that is, the temperature in the normal range, the general is not dangerous! So why is the power supply hot? What kind of temperature range is the normal range? Switching power supply conversion efficiency can only reach 75% -85% or so. The answer is here. Switching power supply conversion efficiency is high enough, it is still difficult to find a better way to convert. Switching power supply in the voltage conversion, a part of the energy loss, in addition to a small part of the loss in the form of waves, the majority of the way out of the heat. Switching power supply power is missing, the loss of energy is also missing, the power of the heat is also large. This is why the desktop power supply to add a fan for cooling reasons. We may wish to count, a 100W switching power supply, in the use of how much energy loss in the above!
- 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
- Q:How many types of CVT are classified?
- Power transmission Power transmission is basically divided into three categories: One is the electromagnetic sliding type, it is in the asynchronous motor to install an electromagnetic slip clutch, by changing its excitation current to speed, which belongs to a more backward speed mode. Its features simple structure, low cost, easy operation and maintenance: sliding the largest, low efficiency, serious heat, not suitable for long-term load operation, it is generally only used for low-power transmission. The second class is a DC motor type, by changing the magnetic flux or change the armature voltage to achieve speed. It is characterized by large speed range, high precision, but the equipment is complex, high cost, maintenance difficulties, generally used for medium power range (dozens to hundreds of kilowatts), has been gradually replaced by AC motor. Three types of AC motor type, through the pole, voltage regulator and frequency control. The most practical application for the frequency control, that is, using a horn to obtain variable amplitude power supply, and then drive the motor speed. It is characterized by good speed performance, large range, high efficiency, can be automatically controlled, small size, wide applicable power range: mechanical characteristics in the slow speed section of constant torque, low efficiency and low efficiency is not smooth, Maintenance need professionals. In recent years, the inverter as an advanced, excellent speed device rapid development of the mechanical CVT had a certain impact.
- Q:65w adapter and 90w laptop power adapter What is the difference?
- According to ibm specification T6 x6 r6 series power supply is compatible The difference is x6 this thin model with 65 The official explanation is (original English), in the 90w models using 65w machine may be in high power consumption, can not meet the system requirements. That is, while the side of the charge side of the use, it is possible that the computer can not run at full speed. In fact, the use of and there is no problem, but also little, at least the machine is no harm. For psychological factors, you can buy a 90w, Taobao fake a lot, you are not professional or to Jingdong to buy, about 250 yuan, although it is more expensive, really is the original.
- Q:Inverter ACS355 If the speed is outside the allowable range, how to set the limit value
- 2. Set the minimum speed allowed in 2001 MINIMUM SPEED.A positive minimum (or zero) defines two ranges, a positive range, A negative range. A negative minimum defines a speed range.
- 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 a load, it may be less than the torque. So it can not run.
- Q:In the official website to buy ThinkPad notebook, to the power adapter?
- Tak City gifted, genuine low, 7 days unconditional return. 300 brand-name notebooks for you to choose.
- Q:Please recommend a high performance laptop power adapter?
- Power adapter can recommend you what model you get what model ah he is a standard can not just recommend
- Q:Pump frequency converter instantaneous restart and restart the problem
- Speed tracking start, with them better. Speed search time is less than the free downtime, not too small too much, will be over-voltage protection. I do not understand and contact me. Your inverter voltage level, manufacturers.
- Q:Computer frequency changer to do cd frequency changer how points positive and negative
- This inverter is 380V of the bar, the capacitor series is to increase the pressure, and then parallel to increase the capacity of the capacity of the capacitor and the inverter is proportional to the power, the greater the capacity of the capacitor capacity requirements are greater.
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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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