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if it is a three phase motor it can be run an the single phase mains but it woild require a hand start in either direction, if you put a capacitor on line two and three and the live and neutral on line one and two then it should work
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoUndervoltage is defined as a condition where the applied voltage drops to 90% of rated voltage, or less, for at least 1 minute. Low-voltage conditions occur when a facility asks for more power than the line can deliver. But take note that it's not always an issue of the electric utility not having adequate capacity - Transformers can act like a choke, restricting how much total power gets through to your system. Perhaps the facility (or a neighbor on the same electric utility transmission line) added new equipment and increased the load beyond what the line could deliver. In isolated cases, maybe the facility added a motor with a long cable run, and the voltage drop in that circuit resulted in low voltage at that motor. Brief low-voltage conditions can also happen when someone starts a large load without notifying the power company, or when the power is shorted to ground or to another line. Even loose cable connections can cause low voltage.
For an electric motor, torque changes as the square of the voltage applied. A 10% increase in voltage, for example, will boost torque 21% (1.1×1.1=1.21). Conversely, at 90% of rated voltage, the motor suffers a 19% reduction in torque (0.9×0.9=0.81). A more severe undervoltage condition, 20% below rated value, would reduce the motors torque to only 64% of rating (0.8×0.8 =.64). The effects are a 156% overload and catastrophic failure.
Wiki User
∙ 15y agomotor magnetizing current will increase with increase in voltage, therefore power factor of motor will decrease and motor will draw more current than rated.
Wiki User
∙ 13y agoThe effect of low voltage on induction motors raises the current that the motor will draw.
Wiki User
∙ 13y agoThe current will be higher than the rated full load amps that is stamped on the name plate.
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What is the cause of fluctuation in amps and pf in a 6000hp syncrhonous motor?
When the line voltages of a polyphase motor induction motor are not equal, unbalanced currents in the stator windings will result. A small percentage voltage unbalance will result in a much larger percentage current unbalance. Consequently, the temperature rise of the motor operating at a particular load and percentage voltage unbalance will be greater than the motor operating under the same conditions with balanced voltages. NEMA Standards MG 1-1998, 12.46 recommends against operating a motor with a voltage unbalance greater than 1%. This will increase operating temperature, vibration, nuisance trips and failures.
What happens if you under power an electric motor you have a 3 hp single phase motor that requires 39A but your generator only outputs 23.2A?
If you make the connection, the breaker on the generator will trip. The motor will not get up to running RPM. Check and see if the motor is dual voltage. If it is, run it on the higher voltage. This will reduce your run current to about half of what it is on the lower voltage.
Principle and working of single phase induction motor?
Will the principle operation is very complex and would require a fair amount of reading in a text book. But the simple operation of a split phase motor is when a single phase motor has two windings. The main operating winding a and auxiliary winding used to create a rotating magnetic field. The main winding is large wire with lots of turns so under locked rotor conditions it is seen as a large inductive reactance and the aux. winding the smaller wire with fewer turns so it is seen a mainly resistive. This 90 degree phase shift is used to produce more starting torque. If a resistive split phase motor aux. winding is switched out shortly after starting. The aux. winding can also be phase shifted by using a capacitor installed in series with it. This is in the case of capacitor start and capacitor run motors.
Can you run a 7.5 hp 3 phase motor on solar energy?
The output from solar panels is a d.c. voltage which, using an inverter, is converted into an a.c. single-phase voltage. So under normal conditions, the answer would be no.
What does a Rotating magnetic field do?
The Field which is continuously rotating with a particular axis is known as rotating magnetic field. It will be created in Three phase induction motor's stator. When the supply is given to stator of three induction motor, the flux of each phases (that are displaced by 120 degrees) will interact. Due to this the resultant Field will be rotating Magnetic Field will be Produced.
What is an inducting motor?
induction motor has two control system one is stator control another rotor control And it comes under the category of asynchronous motors. The term induction is because the rotor of an a.c motor does not receive the electric power through conduction but by induction same as the secondary of the transformer receives the power from primary. And so an induction motor can also be called as a rotating transformer i.e. one in which primary is stationary and secondary is free to rotate.
What is the cause of fluctuation in amps and pf in a 6000hp syncrhonous motor?
When the line voltages of a polyphase motor induction motor are not equal, unbalanced currents in the stator windings will result. A small percentage voltage unbalance will result in a much larger percentage current unbalance. Consequently, the temperature rise of the motor operating at a particular load and percentage voltage unbalance will be greater than the motor operating under the same conditions with balanced voltages. NEMA Standards MG 1-1998, 12.46 recommends against operating a motor with a voltage unbalance greater than 1%. This will increase operating temperature, vibration, nuisance trips and failures.
What happens to a dc motor when it is run under voltage?
Not much, but it depends on the load and the cooling.
What will happen if you stop the rotor and supply is continue in induction motor?
This is done under blocker rotor test of induction motor in which the rotor of the motor is stopped by some external mechanical means and the supply is increased slowly from the autotrasformer until the rated motor current is reached and the V , I ,W readings are taken . As the rated current flows the winding temperature increases but upto rated current this temperature rise is within the safe limits . In the blocked rotor condition the rated current is achieved at around 20-25% of the rated supply voltage . If we further increase the voltage then the current flowing is more than it's rated or permissible value so windings get dengerously hot and they get burnt or damaged .
What happens if you under power an electric motor you have a 3 hp single phase motor that requires 39A but your generator only outputs 23.2A?
If you make the connection, the breaker on the generator will trip. The motor will not get up to running RPM. Check and see if the motor is dual voltage. If it is, run it on the higher voltage. This will reduce your run current to about half of what it is on the lower voltage.
Why does under voltage cause overheating?
Overheating is a result of too much current flowing. AC motors are constant power devices, meaning they require the same amount of power to spin under a specific load. Power is equivalent to voltage times current. If voltage to a motor sags, the motor will attempt to make up the lack of voltage with an increase in current so the power stays the same. If voltage sags too much, the motor will overheat.
When servicing a 2 hp motor your amp reading is 3.10 amps what voltage is the motor operating under?
It depends on whether the motor is run on load or whether it's running light.
Where is the 2004 lesabre blower motor resistor?
blower motor resistor may be located in the blower motor housing, under dash on passenger side, motor brushes may be the issue rather than the resister, suggest check voltage to motor...
Where is the blower motor resistor on a 2004 buick lesabre?
blower motor resistor may be located in the blower motor housing, under dash on passenger side, motor brushes may be the issue rather than the resister, suggest check voltage to motor...
1987 Jeep Cherokee heater will not blow?
First check fuse under dash. Then check voltage to blower motor. Then replace resistor under glove compartment. Then move to switch behind dash panel. Then blower relay if no voltage.
The ac-heater blower motor stopped working on your 1998 Pontiac Bonneville SE - What could be wrong?
check for voltage at the blower motor on all settings. if no voltage check the blower motor resistor or relay. if it has a resistor it will be right beside the blower motor, if it has a relay it will be the relay on the firewall under the hood.it will probably have a purple,orange,blue,and black wires.
Principle and working of single phase induction motor?
Will the principle operation is very complex and would require a fair amount of reading in a text book. But the simple operation of a split phase motor is when a single phase motor has two windings. The main operating winding a and auxiliary winding used to create a rotating magnetic field. The main winding is large wire with lots of turns so under locked rotor conditions it is seen as a large inductive reactance and the aux. winding the smaller wire with fewer turns so it is seen a mainly resistive. This 90 degree phase shift is used to produce more starting torque. If a resistive split phase motor aux. winding is switched out shortly after starting. The aux. winding can also be phase shifted by using a capacitor installed in series with it. This is in the case of capacitor start and capacitor run motors.
