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What size generator would it take to run a 400 hp 480 volt motor?
Wiki User
∙ 10y ago
Well, if 80kW is your PEAK value, then you need an 80kw generator. If 80kW is your nominal current, you need to figure out what your peak current is. This will depend on the type of load. Is mostly motor loads? If so, your peak current may be significantly more than nominal, depending on the starting sequences of the motors. Clear as mud?
Wiki User
∙ 14y ago
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In trying to reduce residential power bill is there a way to couple a generator to a electric motor then power house service through this setup reducing the amount of kilowatts used?
It would take pretty much the same amount of electricity to turn a generator and the generator would make. Tightening up windows, making sure lights are turned off when not in use, raising the AC temp a bit and adding a fan will get you more benefit. If I understand this right, you want to take your service and run it into a motor, use the motor to turn a generator, and power the house off the generator. The only possible way you could save money here is to severly undervoltage your appliances, and you would not be happy with the results. If you run your home at the right voltage you will use the same amount of power as before, plus the losses incurred in the motor-generator rig. Not to mention appropriately sized motors and generators would be cost prohibitive, you would spend more than you would save setting this up. Also motors of the size needed are generally 3 phase, which requires more expensive service. This is the power saving equvalent of a get-ritch-quick scheme or fad diet. Just turn off appliances you arn't using, buy flourescent lights (whole fixtures are better than CFLs, for reasons beyond this scope), set your thermostat so your heater/AC doesn't run as often, draft proof your house, and insulate it well. That will save you much more money than this ever would.
What is generator KVA size for 3 phase 415 volt 7.5 kw 10 hp 19.5 A motor?
The only relevant number is the kw. Then you just divide by the power factor to get the KVA. 0.8 is a pretty typical PF, so that would give you a KVA of about 9.4. But motors can take up to 5 times their rated current on start-up, so you need to make sure you have a generator that will handle that instantaneous current.
Would 8 kva generator run a small house?
Yes, an 8kVA generator can run a small house. A generator this size should be able to adequately power a one ton air conditioner, 18 cubic foot refrigerator, and other small appliances normally found in a small house.
What size electric motor will replace a 16 hp gas motor?
Horsepower is horsepower, so a 16 hp electric motor could, on the surface, replace a 16 hp gas motor. Things to consider, however, include RPM and torque. Gas engines are inefficient, to replace a 16 hp gas engine it would take only a 8 hp electric. standard closest size would be a 10 hp. I have done this several times on air compressors and hydraulic pumps.
Will a 3 phase motor work on grounded B phase?
If the motor is connected to an ungrounded delta supply service there will be no effect on the operation of the motor. If the motor is connected to a wye system supply service and the B phase grounds out, the motor's overload protection would take the motor off line from the electrical supply.
How much current will take a starter initially to start a generator?
This depends on many factors, such as the size of the generator engine, for example. It is basically like the starter motor on a car engine.
How long does it take a residential backup generator to kick in (on average)?
Depending on the size of the motor, a small backup generator can take as long as five to ten minutes to start supplying adequate power to your house. But it's still a great investment if you lose power.
What size generator would it take to start and run a 6 horsepower 220 volt electric motor on a air compressor?
To answer this question the full load amperage of the motor and what phase the motor is, should have been given. This answer uses the motor amperage give in the electrical code book and will be close for your purpose. A 6 HP is not a common size motor. 7.5 HP motor is 25.3 amps. Using a power factor of 90%. W = I x E x 1.73 x pf, W = 25.3 x 220 x 1.73 x .9 = 8666 watts. A 10kW three phase generator will probably start the motor if it is not under load when it starts. A 15 kw generator would be better. A single phase 7.5 HP motor draws 40 amps. W = I x E x pf = 40 x 220 x .9 = 7920. Again A 10kW single phase generator will probably start the motor if it is not under load when it starts. A 15 kw generator would be better.
Whether you can use motor as generator?
Yes. You can run it backwards, spin the rotor of the motor and take electricity out.
Does a generator produce DC electrical current?
Yes, provided its a stationary field type generator and it has split rings on its armature. take a general dc motor used in tape recorders and observe it. it you give supply, its a dc motor if you rotate it by the help of other and take the output from its leads its a dc generator thats simple
How do you remove the generator from the motor?
you take the blue wire and connect it with the red then connect it to the yellow then you cut the green wire and there you go!
Can you take a 12000 watt gas powered generator and replace the gas engine with a electric motor to run the generator?
A 15 KW generator won't likely run everything in your house, but besides that it is not efficient. You will be using more electricity to run the generator than the power would deliver. You also defeat the reason for the generator - run your house when power goes out. Now if you had a wind turbine turning a generator you have a positive contribution to house power. This is how wind power works. There are also lots of issues associated with a power transfer switch and feeding power back into the grid.
What size motor do you need for your boat it weighs 160 lbs?
the max motor size should be on your capacity plate. Length x width have more to do with motor size than weight. Wider boats take more HP, and Longer, skinnier boats take less HP.
Short note on metadyne and amplidyne?
an amplidyne is usually an ac motor driving a dc generator with modifications to increase the power gain available. a small electrical signal can control the position of a large motor using this approach. an amplidyne is a special type of motor-generator, which uses regeneration to increase its gain. energy comes from the motor, and the power output is controlled by changing the field current of the generator. in a typical generator, the load brushes are positioned perpendicular to the magnetic field flux. to convert a generator to an amplidyne, we need to connect, what would be the load brushes together and take the output from another set of brushes that are parallel with the field. the perpendicular brushes are now called the quadrature brushes. this simple change can increase the gain by a factor of 10000 or more.
Can a 1 hp electric motor run a 3000 watt alternator?
Usual configuration, it is an engine that is used to turn a generator not a motor. If you mean it the other way around, will a 3000 watt generator have enough output to operate a 1 HP motor. 1 HP is equal to 746 watts. Keep in mind when a motor start it can take up to 300% of its full load amperage.
In trying to reduce residential power bill is there a way to couple a generator to a electric motor then power house service through this setup reducing the amount of kilowatts used?
It would take pretty much the same amount of electricity to turn a generator and the generator would make. Tightening up windows, making sure lights are turned off when not in use, raising the AC temp a bit and adding a fan will get you more benefit. If I understand this right, you want to take your service and run it into a motor, use the motor to turn a generator, and power the house off the generator. The only possible way you could save money here is to severly undervoltage your appliances, and you would not be happy with the results. If you run your home at the right voltage you will use the same amount of power as before, plus the losses incurred in the motor-generator rig. Not to mention appropriately sized motors and generators would be cost prohibitive, you would spend more than you would save setting this up. Also motors of the size needed are generally 3 phase, which requires more expensive service. This is the power saving equvalent of a get-ritch-quick scheme or fad diet. Just turn off appliances you arn't using, buy flourescent lights (whole fixtures are better than CFLs, for reasons beyond this scope), set your thermostat so your heater/AC doesn't run as often, draft proof your house, and insulate it well. That will save you much more money than this ever would.
What is generator KVA size for 3 phase 415 volt 7.5 kw 10 hp 19.5 A motor?
The only relevant number is the kw. Then you just divide by the power factor to get the KVA. 0.8 is a pretty typical PF, so that would give you a KVA of about 9.4. But motors can take up to 5 times their rated current on start-up, so you need to make sure you have a generator that will handle that instantaneous current.
