Siemens High Efficient High Low Voltage AC Motor

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Siemens High Efficient High Low Voltage AC Motor

Q: Why is DC motor wider than AC motor? High speed regulation accuracy? How do you know?: The speed regulation of DC motor usually depends on changing the voltage at the two ends of the armature. The speed and voltage are basically linear, so the speed regulation accuracy is high. However, due to the brush limit, the DC power is generally not largeThe speed change of an AC motor depends on changing the pole number or changing the frequency, while the mechanical characteristic is related to the rotor resistance, armature current and so on. The ancient and lower precision, to achieve servo control should be introduced into the closed loop control system.

Q: We know on undervoltage an ac motor will tend to draw overcurrent. But this should be due to the frequency factor, with frequency acting as a set point for the speed. But is this applicable to dc motor, which doesnt have such set point, and hence in a dc motor current should be proportional to voltage right?: DC or AC doesn't matter. All motors draw high current on starting and it drops as they generate counter EMF. Big motors may have to be started incrementally. Small motors can handle the load but only for seconds. Low voltage is a problem either way. If a motor can't start and run, it can't generate counter EMF and becomes a pure resistance load. Since most motors have low resistance when stalled, they tend to burn. They all do that, AC or DC. If you can't get the motor turning fast enough, it'll burn. It isn't about frequency factor as much as about getting the motor to run fast enough to generate counter EMF. This is a problem at campgrounds where people burn out air conditioning units in their trailers because the voltage is too low after coming through the campground lines. It would be the same if it was DC.

Q: blower does not come on with switch and fuse is good.: Should be in the right rear quarter area

Q: Is DC motor energy saving or AC current?: AC motor energy saving using frequency converter

Q: Is there any standard deviation range for AC motor speed? For example, the speed of 4 motors reached 1500, turn failed?: AC motor: a machine used to convert mechanical energy and alternating current energy. AC motor has become the most common motor because of the great development of AC power system. Compared to the AC motor and DC motor, because there is no commutator (see DC motor commutation), therefore has the advantages of simple structure, convenient manufacture, relatively strong, easy to make high speed motor, high voltage, high current, large capacity. The coverage of AC motor power greatly, from a few watts to several 101000 watts, even millions of kilowatts. In the early 1980s, the largest turbo generator reached 1 million 500 thousand kilowatts.

Q: Is it possible to run an AC motor off DC current and still have it function correctly?: if it is a universal motor (has brushes) yes. if it is an induction motor, no

Q: I have a window unit AC. Lately, even when I turn it completely off, the motor runs sporadically. It does not blow air when it does this. It didn't do this until the past few weeks (I've had it several years). It continues to work well other than this.. ols well and everything.: What is running intermittently? The compressor or the fan motor? Some have energy saver features that cause the fan to come on every so often to check the room temp to see if it needs to cycle the unit on. Possibly the energy save feature is malfunctioning? Have you tried unplugging it for awhile then replugging it to see if it stops doing it? Might reset something? Electronics can do weird things sometimes that a reboot takes care of. *update* Easy way to tell whats running when you first plugged it in did you feel air blowing out or did it just make noise?

Q: Would it be used in factories, Cars, some household appliances stuff like that: Each okorder /

Q: I dont need to control the speed. What is the easiest way to convert and what would be the least expensive way. Thanks.: A transformer and a bridge rectifier would work. The transformer needs to be a primary 110 to secondary 90 volts AC rated at 1700 VA. Or a smaller transformer, say 110 volts to 20 VAC rated at 300 VA, wired in series opposition to the 110 volt line, followed by the rectifiers. Be sure that you really have a 110 volt line, not 120 volts, as that changes the numbers. US nominal is between 117 and 125 volts, depending on where you live. Another alternative is to just rectify the AC via a bridge rectifier which gets you about 110 VDC, and use a switching circuit to reduce that to 90 volts DC. This would be a lot lighter but a lot more expensive.

Q: 3/4 HPVOLTS 230/460 1725 RPM FRAM 42CYZHZ 60: AC Volt. HZ 60 means frequency 60 cycles per sec., which is the characteristics of Alternating Current. DC Volt does not have frequency, as it flows continuously.

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