ABB AC Motor High Low Voltage NV Series

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Brand Name:ABBModel Number:HXR 400 SeriesType:Squirre Cage Motor
Frequency:50.2 HzOutput Power:350 KWProtect Feature:Explosion-proof
Phase:Three-phaseCertification:CEAC Voltage:690V
Place of Origin:Shanghai China (Mainland)Efficiency:IE 1Packaging Detail::EXPORT STANDAR WOODEN CASE
StructureAsynchronous MotorFunctionDriving UsageUniversal

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Q:In the main circuit of AC motor, fuse can be used as short circuit protection, can it play the role of overload protection at the same time, why?
Therefore, the overload protection of the motor requires the use of a thermal relay that can accumulate heat effects. When the accumulated heat reaches a certain degree, the protection is started, and the motor is not allowed to continue heating up.
Q:Can AC motors use direct current?
Ordinary asynchronous AC motors are not allowed.But some live brush AC motors are slightly modified and can be powered by direct current.
Q:Is DC motor energy saving or AC current?
AC motor energy saving using frequency converter
Q:What are the speed regulating methods of AC motors? What are the characteristics of each?
Winding motor rotor series resistance speed control method: line induction motor rotor series of additional resistance, so that the motor slip increases, the motor at a lower speed operation. The greater the resistance in series, the lower the speed of the motor. This method is simple in equipment and convenient in control, but the differential power is consumed in the form of heating. The utility model belongs to a class speed regulation, and the mechanical characteristics are softer.
Q:What's the difference between DC motor carbon brush and AC motor carbon brush?
DC motor carbon brush and AC motor carbon brush is the same, so there are AC and DC dual series motor.
Q:Why are DC motors more powerful than AC motors of the same power?
This statement is inaccurate, and the output torque is the same under the same power and configuration.The reason for this intuitive illusion is that there is a difference between the two. AC motor as the power supply connection method or different structure, small starting torque, and starting current of DC motor often exceeds the rated current, starting torque exceeds the rated torque, thus starting load is more common. In order to start smoothly, the AC motor must not enlarge the output torque in order to overcome the insufficiency of the starting torque or change the connection method to increase the starting current. This gives a very intuitive appearance, the same power, AC motor can not drive, while the DC motor is easily competent.
Q:How large AC contactor and thermal relay should be used for the motor of 3KW? There are steps to calculate better.
1, rated current = power *2, or 6A2, the selection of AC contactor, the current domestic > = rated current, usually for a minimum of 9A. The reason is why recommend you go with CJX1 0922 or CJX2 0911 9A.3 、 thermal relay is usually a current range, rated current included in the range, preferably near the middle, which is ideal.Selection of domestic products, circuit breakers, contactors and other appropriate amplification, because the quality is not reassuring.
Q:Please exchange the motor. Is it possible to adjust the speed with a governor?
At present, the most preferential speed regulation mode is frequency converter with the best performance, while the output torque is constant at low speed.
Q:Is the 380V single-phase AC motor the same as that of the 220V AC motor?
First of all, we should understand the meaning of alternating current, that is, the line of fire. There are four lines in the alternating current power supply 380V line, one of which is the zero line. Suppose that A, B, C [phase line], D [zero line], referred to as "three-phase four wire", in the three-phase any one phase line and D line [zero line] combination is referred to as "single-phase second-line"". Three-phase four wire power also referred to as "380V", also referred to as the single-phase two-wire 220V electricity; if it is 380V should be called the motor three-phase AC motor, if 220V motor can be called single-phase AC motor, the motor wiring is of course quite different. If the three-phase AC motor is not in phase (or bad), it can not work. If the single-phase AC motor is wrongly connected to the 380V, the second phase is very dangerous, and the motor will be burned immediately.
Q:Can the welding line of AC welding machine be dead?
Electric welder no-load voltage in 50V ~ 90V, and the highest level of safety voltage 42V, no-load voltage is higher than the safe voltage, this is not the main safety factors of two lines; in addition, the general electric welding arc ignition, working voltage 16V ~ 35V needed to maintain the arc, although in a safe voltage range but, in the bad environment such as welding on metal structures, metal containers, pipes or under water and wet locations for welding, welding if the poor body condition, body resistance is very low, may cause electric shock, safe voltage is not absolutely safe.

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