Technical Specifications; Protection - GE Multilin MM3 Motor Manager 3 Instruction Manual

TECHNICAL SPECIFICATIONS

NOTE
1.2.1

Protection

1–6
1.2 Technical specifications
Design and specifications subject to change without notice.
ACCELERATION TIME
Range:......................................0.5 to 125 seconds or OFF
Accuracy:................................± 0.5 seconds
GROUND FAULT TRIP TIME
Accuracy:................................–0 ms/+50 ms; 0.0 = less than 50 ms
OVERLOAD CURVES TRIP TIME
Accuracy:................................± 200 ms up to 10 seconds
± 2% of trip time over 10 seconds
Detection level: ....................± 1% of primary CT amps
SINGLE PHASE
Range:......................................greater than 30% U/B
Accuracy:................................± 2 percentage points
Trip delay:...............................5 seconds, ±1 second
if I
Calculation method: .........
AV
if I
AV
where I
deviation from I
STALLED ROTOR
Range:......................................1.15 to 4.50 × FLC or OFF
Delay range:..........................0.5 to 5 seconds
Accuracy:................................± 0.5 second
THERMAL COOLING
Range: .....................................5 to 1080 minutes when motor stopped
50% of motor stopped value when motor running.
Accuracy: ...............................± 1 minute
UNDERCURRENT
Range:......................................10 to 100% × motor FLC or OFF
Delay range:..........................1 to 60 seconds
Accuracy:................................±1 second
UNDERVOLTAGE
Undervoltage:.......................65% of nominal (120 or 240 V AC);
immediate restart for maximum dip time of 0.1 to 0.5 seconds or OFF;
delayed restart for maximum dip time of 0.1 or 10.0 seconds or unlimited
Delay restart range: ..........0.2 to 300 seconds
Delay restart accuracy: ...±0.2 seconds
I I
–
M AV
≥ I : UB% × 100
-------------------- -
=
FLC
I
AV
I I
–
M AV
< ×
I : UB% 100
-------------------- -
=
FLC
I
FLC
= average phase current, I
AV
, and I = motor full load current setting
AV FLC
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
= current in a phase with maximum
M