Specifications - GE MI-869 Instruction Manual

CHAPTER 1: INTRODUCTION
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Specifications

Device
Protection
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
Harsh Environment Coating is a standard feature on all 8 Series units.
Advanced security is only available with advanced communications (1E, 1P, 2A, 2E). When
the advanced communications option is selected, the Ethernet port on the main CPU is
disabled.
The "A" option on Slot H is only available if the "L" option is selected on Slot G.
To obtain the total operating time, i.e. from the presence of a trip condition to initiation of a
trip, add 8 ms output relay time to the operate times listed below.
CUSTOM CONFIGURATIONS
Config Mode:.........................................................Simplified, Regular
ARC FLASH HS PHASE/GROUND INSTANTANEOUS OVERCURRENT HS 50P/50G
Current:....................................................................Phasor Magnitude (special high speed algorithm)
Pickup Level:..........................................................0.050 to 30.000 x CT in steps of 0.001 x CT
Dropout Level: ......................................................97 to 98% of Pickup
Level Accuracy:....................................................For 0.1 to 0.2 x CT: ± 0.2% of reading or 1.5% of rated,
Operate Time:.......................................................4 ms at >6 x Pickup at 60 Hz
PERCENT DIFFERENTIAL (87S)
Methods: .................................................................Internal summation and Core balance
Pickup Level:..........................................................0.05 to 1.00 x CT in steps of 0.01
Slope 1 and 2: .......................................................1 to 100% in steps of 1
Break 1:....................................................................0.50 to 2.00 x CT in steps of 0.01
Break 2:....................................................................2.00 to 30.00 x CT in steps of 0.01
Operate Time:.......................................................<16 ms at >3 × Pickup at 60 Hz;
THERMAL MODEL (49)
Thermal Overload Curves: ..............................Motor curve, FlexCurve, Standard Motor curve with voltage
Motor Curve Time Multiplier:.........................0.00 to 25.00 in steps of 0.01
FlexCurve Time Multiplier: ..............................0.00 to 600.00 in steps of 0.01
IEC Curve Time Constant: ...............................0 to 1000 in steps of 1
Thermal Overload Pickup:...............................Overload factor x FLA
Overload Factor (OL):.........................................1.00 to 1.50 in steps of 0.01
Motor Full Load Current (FLA):.......................1 to 5000 A in steps of 1
whichever is greater
For > 0.2 x CT: ± 1.5% of reading
5 ms at >6 x Pickup at 50 Hz
4-8 ms at > (3-6) x Pickup at 60 Hz
4-10 ms at > (3-6) x Pickup at 50 Hz
<20 ms at >3 × Pickup at 50 Hz
dependent function, FlexCurve with voltage dependent
function, IEC curve
SPECIFICATIONS
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