38 EVOLUTION SERIES E9000 MOTOR CONTROL CENTER
Size 3 (Standard and Ambient Comp.)
Heaters for mag-break® controllers
The Mag-Break protector is factory adjusted to the
minimum trip setting
For continuous-rated motors with a service factor
of 1.15 to 1.25, select the appropriate heaters for
the motor full-load current. For continuous-rated
motors with a service factor of 1.0, multiply the
motor full-load current by 0.9 and use this value to
select heaters.
Use the heater table to verify that the Mag-Break
and current limiter rating is correct for the motor
full-load current. Then set the Mag-Break trip
setting to the recommended value.
If the Mag-Break trips during motor startup,
increase the trip setting by one step at a time until
the motor can be consistently started. Do not
exceed the maximum trip setting shown in the
heater table.
the minimum value of heater full-load current
multiplied by 1.25.
Size 4 (Standard and Ambient Comp.)
Size 5 (Standard and Ambient Comp.)
Motor Full-
Load Amps
Heater
Number
Motor Full-
Load Amps
Heater
Number
Motor Full-
Load Amps
Heater
Number
Motor Full-
Load Amps
Heater
Heater
Number
Motor Full-
Load Amps
Heater
Number
Motor Full-
Load Amps
Heater
Number
To maintain overload, short-circuit, and
groundfault protection, use the following
instructions to select heaters and to adjust
the Mag-Break trip setting.
Circuit breaker tripping may be an
indication that a fault current has
been interrupted. To provide continued
protection against fire or shock hazard,
examine all current-carrying parts and
other components of the motor controller
and replace any damaged components.
If heater burnout occurs, the complete
overload relay must be replaced.
To Next Page
Loading...
