what is the Space heater? why using in Electrical motor?
Answers were Sorted based on User's Feedback
Answer / ankamsreekar
Electric motors frequently have space heaters (or strip
heaters) installed to prevent moisture condensation in the
motor during times the motor is not running.
Many motor manufacturers use metallic or ceramic cartridge
heaters for this purpose. Because such heaters are small,
they must operate at a high surface watt density and
consequently high temperature.
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / ash
When a motor is built as a "totally enclosed" (TE) unit, no free interchange of air can take place between interior and exterior. That's good protection against entry of solid or liquid contaminants.
But no enclosure can be airtight. As the TE motor heats and cools between "on" and "off," or from day to night, outside air will "breathe", in and out, and the water vapor in that air will condense on interior surfaces of winding and bearings. The result will eventually be insulation failure and bearing corrosion.
To prevent that, the motor's interior needs to be kept warm — above the condensation temperature — whenever it's not running. This is particularly true for motors that run only a few hours a day, are seasonally idle, or are installed in unusually damp locations. It's not a function of motor size or type. The same conditions exist, and will be equally damaging, whether the motor is 1 horsepower or 1000.
Is This Answer Correct ? | 1 Yes | 0 No |
It is used to warm up inside of panel or motor .In case of
motor,now instead of flat space heater ,current is passed
through winding using a transformer
Is This Answer Correct ? | 0 Yes | 2 No |
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
Is this possible to synchronize the two different ratings of dg
Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?
Why we use circular(Stepped) cross section in transformer core?
why neutral and earth should not be connected on 3 phase 440v/50c/s supply at consumer side. where as on 25kv/ac/50c/s railway traction substation neutral and earth will be connected and track at substation. and track will act as neutral and earth. Reasons for this is needed urgently
how we can differentiate a motor and a generator just by a glance?
What is ST and specify its range of voltage.
What are approaches to tackle sedimentation problem of reservoir?
why buchholz relay installed in inclined position
a 50hz motor to give 60hz whats happening in motor.what happen the motor.
what is power factor
How to calulate cable size for 200KVA,160KVA& 40KVA load?