The classification stray load loss includes all losses which vary with the load but which are not accurately determinable. Such losses are caused by:
1. Eddy currents in armature conductors.
2. Short-circuit currents in coils under commutation.
3. Eddy currents in bolts and other solid parts of the armature.
4. Flux pulsations produced by change in the reluctance of the magnetic path at teeth and slots; and flux pulsations produced by currents in coils under commutation.
5. Distortion of the flux in the armature produced by the armature reaction.
Inasmuch as the stray load losses are not accurately determinable, but do actually exist, the recommendation of the American Institute of Electrical Engineers is that they be assumed as 1 per cent of the power output when calculating conventional efficiency of machines having an output of 30 or more hp.
j
j
Pruned
A Field Loss Relay protects the motor or connected machinery from damage that could be caused by a sudden loss of power to the motor field. In a DC motor, reducing the field current causes an increase in rotor speed (Field Weakening control utilises this to run motors above their base speed). However, if the field current suddenly drops off, the armature will try to accellerate to infinite speed. Sometimes this will just blow the fuses on the drive, but I have witnessed a DC motor self-destruct because of field loss - the armature accellerated to such a speed that the centrefugal force ripped apart the rotor. The motor was only good for a boat anchor afterwards. - OK, now for my free advertising: if anyone needs a good reliable source for repairs of motor drives, PLC's, operator panels and other electronics, call AFI Systems LLC at (704)889-2404. We also design industrial control systems and circuit boards, and buy & sell used industrial electronics! Thanks for reading this post! - Andy Fleming.
It is not only 3 phase motor, but every electrical device heats up. The reason is the current flowing through the windings causes the I^2*R heat loss. Apart from that, in case of an induction motor, the alternate cycle of magnetization and demagnetization of core material causes the hysterisis loss and eddy current loss. Last but not the least, there are friction and windage losses for a rotating electrical machine. All of these losses are dissipated as heat energy and hence the machine heats up.
What would cause loss of motor function in upper thighs
The motor cortex.
alcohol intoxication
Sleepyness, loss of motor control, hallucinations.
Akinesia is the loss of the ability to control motor muscles.
j
No,
No, not all seizures involve a complete loss of motor control. Seizures can vary widely in presentation; some, like tonic-clonic seizures, do involve loss of motor control, while others, such as absence seizures, may result in brief lapses of awareness without significant motor changes. Additionally, focal seizures can lead to specific muscle movements or sensations without a total loss of control.
Debit loss of motor vehicleCredit vehicle account
Generally neurological damages, such as nerve damage or brain damage, result in the loss of motor functions. This can be due to severe burns, electrical shock, or blunt force trauma to the head, neck, and or spine.
j
You will most likely have a bad blower resister..............