GE Multilin™ M60 Motor protection system Underpower Protection

Two-Speed Motor Protection

The two-speed motor protection feature

allows for the protection of motors that

can operate at two different speeds and

have different full load capacity levels at

each speed. This feature can be used on

motors that have two sets of windings

on each stator, where each set is used to

operate the motor at a different speed.

Underpower Protection

The underpower protection feature

provides for sensitive detection of a

loss of load condition.  The underpower

protection element can be more sensitive

for detecting loss of load conditions

caused by process-related problems than

is possible using a standard undercurrent

element.

Reduced Voltage Starting

The reduced voltage starting feature

provides the controls for signaling the

motor to switch over from a reduced

voltage (that is used during startup) to the

full voltage for motor running operation.

This feature can issue the command

to switch to full operating voltage, by

detecting: a) if the motor load has reached

a preset current level, or b) if a time delay

has elapsed (after starting), or c) both of

these conditions combined.