Auxiliary electric heater with standard grounding of low voltage motor
Auxiliary electric heater can not operate without some other components, for example, it can operate with low voltage motor, working process, the need for a ground operation. Now we know the auxiliary electric heater with low voltage motor for ground standards.
First, auxiliary heater actuator with the low voltage motor to near bare conductor, but it must be grounded or neutral.
Second, the insulation resistance value should be greater than 0.5M.
Third, if it is more than 100kW motor, you should measure each phase DC resistance value, each value should not be greater than the minimum value of the difference between 2%;
Four, no neutral point leads to the motor, measuring line between DC resistance values, each value should not be greater than the minimum value of the difference between 1%.