GE MM300 - Specifications

1–6 MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
Example of an MM300 order code
MM300-GEHS1CAXXXX: MM300 with graphical control panel and USB port, English
language display, high voltage 84 to 250 V DC and 60 to 300 V AC power supply, RS485
Modbus RTU communications, starter control, event recorder, undervoltage autorestart,
three-phase current, thermal overload, undercurrent, single phase underpower, two 10 A
form-A contact output relays, and six digital inputs.
Specifications
NOTE
NOTE:
Specifications are subject to change without notice.
Protection specifications
ACCELERATION TIMER
Pickup:......................................................................I
av
> I
pu
Dropout:.................................................................. I
av
< I
pu
or timer expired
Time delay:............................................................ 0.5 to 250.0 seconds in steps of 0.1
Timing accuracy:................................................ ±500 ms or 1.5% of total time
Elements:................................................................ trip and alarm
AUXILIARY UNDERVOLTAGE
Pickup level:........................................................... 60 to 90% of NCV
Time delay:............................................................ 1 to 60 seconds in steps of 1
Timing accuracy:................................................ ± 500 ms
Elements:................................................................ trip and alarm
CURRENT UNBALANCE
Range:...................................................................... 4 to 40% in steps of 1
Accuracy: ............................................................... ±2%
Time delay:............................................................ 1 to 60 seconds in steps of 1 s
Timing accuracy:................................................ ±500 ms
Elements:................................................................ trip and alarm
FUSE FAILURE (RUNNING STATE ONLY)
Timing:..................................................................... <500 ms
Elements:................................................................ trip and alarm
CALCULATION METHOD
If I
AV
≥ I
FLA
: ( [I
M
- I
AV
] /I
AV
) x 100%
If I
AV
≤ I
FLA
: ( [I
M
- I
AV
] /I
FLA
) x 100%
Where:
I
AV
= average phase current
I
M
= current in a phase with maximum deviation from I
AV
I
FLA
= MOTOR FULL LOAD CURRENT setpoint