Contents
What causes a motor to have a high no load current?
The most common causes of high no-load current after a motor is rewound are incorrect winding data and stator core damage. Incorrect winding data that increases the magnetic flux levels as compared with design levels will result in increased no-load current.
What happens to a motor with a 100 hp rating?
A motor with a power rating of 100 hp would therefore behave as if it were designed for 81 hp. At full rated load it would be overloaded by about 23% (100/81 × 100) because of its magnetically weak winding. The results would include overcurrent and operation at much lower-than-rated speed.
Can a bigger motor be used on a fishing boat?
The bigger issue is are you fishing tournaments? then buy a new and bigger boat with the maxed out motor. At that rate your will be going to a warrior, as they can operate the really big tillers. The coast guard formula is the bible for now……and for what it is worth also the law.
Is it OK to hang a larger engine on a boat?
They are afraid of the liability. So, if you buy the motor and hang it yourself you will be OK. That said…..if you are ever involved in a on water accident the opposing attorney will fillet you if they get the chance. IMO you are looking for trouble if you hang a 150.
Which is better bipolar or unipolar stepper motors?
Bipolar Series uses the full coil so it gives very good low speed torque. But because of the high inductance, the torque drops off rapidly. Bipolar Parallel also uses the full coil so it gives good low speed performance. And its low inductance allows the torque to be held out to high speeds.
What causes high current with 3 phase motor?
The most frequent concern about high current with a three-phase motor is high no-load current. But the broad issue of high no-load current isn’t the only three-phase motor issue to which plants should pay heed: High current with load and lower-than-expected no-load current are potential areas of concern, too.
How can you tell the polarity of a motor?
You will have to test to see what the polarity of the motor is, however. The center tap wire should have half the internal resistance of the full phase. The easiest option is to use a multimeter to find the two pairs of wires that have the maximum resistance.