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a diode in the exciter has blown or leaking current back and forth, test diodes with a multi meter continuity test.
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It sounds like the field excitation voltage has been lost. Check that the field potentiometer has not been turned down to the off position. Check at the F1 and F2 outputs of the voltage regulator for any DC voltage.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoWhat do you mean?Are you getting zero power as output or less than the rated output power?If your output power is less than the rated then, you will have to see the losses that occur in the generator itself otherwise there must be losses in the prime-mover of the generator!! Let's assume that you are getting zero output power then, these might be the reasons.
1. Failure of the prime-mover( Less than the rated speed of rotation of generator)
2. Some faults in the prime-mover.(viz. broken/bent shaft & other mech. problems)
3. Faults that occur in the generator itself ( short circuit of conductors/windings,)
4. Faulty design of generator
I would suggest you to get your generator checked by an expert. Reply me if you are satisfied!!
Wiki User
∙ 13y agoSetting aside the fact that there are no electrical generators that get their power from electric motors except for some that are set up to convert house current into 3-phase,
What this question proposes is called "perpetual motion". A generator does not convert all of its energy input into electrical output. Quite a bit is converted into heat. The heat comes from the bearings, and the electrical resistance of the wires in the windings. Likewise, an electric motor does not convert all of its electrical input into mechanical force. Quite a bit is lost to heat, as well. Conversion of energy is always accompanied by loss of some sort, usually as heat.
Wiki User
∙ 12y agoresidual magnetism of field might be lost.
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How variable speed generator works and its specification?
First you have to understand how a generator works. Basically the excitation voltage is what varies according to generator output. Usually on a power source that has a inconsistant rpm, the excitation voltage will vary similar to a govenor in order to hold the generator output constant.
How do you troubleshoot generator that fails to supply ac voltage?
You first use the schematic diagram in the equipment service manual to understand the flow of the power and signals in the generator. The first thing to check is all of the power supply voltages. If one is missing, the generator can fail in such a way as to produce no output. Then you can use an oscilloscope to trace the problem backwards, from the output connector of the generator to to the source of the signal generation.
Why a given generator frequency is dictated by the size of the magnetic flux?
A generator's frequency is dictated by the power system frequency, and the number of poles in the generator. For 60 Hz power and a generator designed with two poles, the generator must turn at 3600RMPs (60 Hz * 60 seconds / minute). The magnetic flux is what induces the current in on the output winding. Spinning a synchronous generator faster or slower is not done to control the magnetic flux. The field winding voltage is varied to control this, and in turn control the output of the generator.
In an AC power supply system what component connects the 115 200 VAC main generator output to the main power buses?
GLC
How can an ac generator be converted to DC generator?
It may not be possible to physically convert AC generator to DC generator. What can be done is that 'Rectifier' of suitable capacity can be connected to the out put of AC generator to get DC supply.
How to calculate amp load for a generator?
Take the power output of the generator and divide it by the voltage output. I = W/E.
What is DC generator?
because DC generator generates generally generate DC power but as it has slip rings which convert it into ac output power
Discuss on the losses of generator power output?
The field excitation could have been lost. Check the output from the voltage regulator.
Advantages and disadvatages of a self excited induction generator?
The main disadvantage should be obvious - when the output voltage of the generator is used to provide field current to the generator....what happens if the output voltage sags? If the output voltage becomes depressed, the output power of the generator is compromised (becomes less and less), this in turn can cause the output to become more depressed, leading to an incrementally decreasing output capability. The main advantage is cost savings.
How variable speed generator works and its specification?
First you have to understand how a generator works. Basically the excitation voltage is what varies according to generator output. Usually on a power source that has a inconsistant rpm, the excitation voltage will vary similar to a govenor in order to hold the generator output constant.
Can we improve generator power factor for increasing active power?
The 0.8 Power Factor provided by generator manufacturers is not the load power factor, but it is the nominal power factor used to calculate the kW output of an engine to supply the power for a particular alternator kVA output. Alternators are therefore designed to supply their rated kVA at 0.8 lagging power factor.
A home generator puts out enough power to run how many applincesat a time?
Not all generators have the same output. Check the manual that came with your generator.
A generator produces 240volts at 25 amperes. If the mechanical and electrical power losses total 900 watts what is the efficiency of the generator?
Efficiency is measured as the ratio of power output to power input. In this case the power input of the generator is 240V * 25A = 6000 VA however the stated losses are 900 W so the power output is 6000 - 900 = 5100W. Then the efficiency would be 5100/6000 = 0.85 or 85% efficient.
How do you troubleshoot generator that fails to supply ac voltage?
You first use the schematic diagram in the equipment service manual to understand the flow of the power and signals in the generator. The first thing to check is all of the power supply voltages. If one is missing, the generator can fail in such a way as to produce no output. Then you can use an oscilloscope to trace the problem backwards, from the output connector of the generator to to the source of the signal generation.
What do you understand by efficiency of motor or generator?
The efficiency of any machine is the output power divided by the input power, usually expressed as a percentage.
Can you run an electric oven on a generator?
If the output of the generator is equal to or bigger than the power consumption of the oven - sure. And the voltage and current type has to match too.
Why a given generator frequency is dictated by the size of the magnetic flux?
A generator's frequency is dictated by the power system frequency, and the number of poles in the generator. For 60 Hz power and a generator designed with two poles, the generator must turn at 3600RMPs (60 Hz * 60 seconds / minute). The magnetic flux is what induces the current in on the output winding. Spinning a synchronous generator faster or slower is not done to control the magnetic flux. The field winding voltage is varied to control this, and in turn control the output of the generator.
