Inputs Specifications - GE MM300 Instruction Manual

CHAPTER 1: INTRODUCTION

Inputs specifications

MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
AUXILIARY VOLTAGE INPUT (UNDERVOLTAGE RESTART SOURCE)
External VT primary:.......................................... 110 to 690 V AC in steps of 1 (if used)
Input range: ........................................................... 60 to 300 V AC
Nominal frequency: ........................................... 50 or 60 Hz
Accuracy:................................................................ ±5% of reading
DIGITAL INPUTS (IO_C MODULE)
Fixed pickup: ......................................................... 65 V AC
Recognition time: ................................................ 2 cycles
Current draw at rated voltage:..................... 75 mA @ 120 V AC for 200 µs every cycle
Input impedence:................................................ 1.7 kΩ
Type: ......................................................................... opto-isolated inputs
External switch: ................................................... wet contact
Maximum input voltage:.................................. 300 V AC
DIGITAL INPUTS (IO_E MODULE)
Fixed pickup: ......................................................... 20 V DC
Recognition time: ................................................ 2 cycles
Current draw at rated voltage:..................... 7 mA @ 24 V DC
Input impedence:................................................ 1.23 kΩ
Type: ......................................................................... opto-isolated inputs
External switch: ................................................... wet contact
Maximum input voltage:.................................. 60 V DC
GROUND CURRENT INPUT (50:0.025)
CT primary: ............................................................ 0.5 to 15.0 A
Nominal frequency: ........................................... 50 or 60 Hz
Accuracy (CBCT): ................................................. ±0.1 A (0.5 to 3.99 A)
Burden: .................................................................... <8.6 mVA at 25 A
PHASE CURRENT INPUTS (INCLUDING RESIDUAL GROUND CURRENT)
Range: ...................................................................... 0.2 to 40 A (8 × CT), direct connection up to 5 A FLA
Input type:.............................................................. Combined 1 A / 5 A
Frequency: ............................................................. 50 or 60 Hz
Accuracy:................................................................ ExtCT: ±2% of reading or ±1% of 8× CTPrimary, whichever is
Withstand (at 5A nominal): ............................. 0.2 s at 100×
Burden: .................................................................... <4 mVA at 1A
PHASE VOLTAGE INPUTS (THREE-PHASE VOLTAGE)
Input range: ........................................................... 208 to 690 V
Nominal frequency: ........................................... 50 or 60 Hz
Accuracy:................................................................ ±2% of reading, or ±1 V, whichever is greater
RTD INPUTS
Sensor type: .......................................................... Three-wire RTD (100 ohm Platinum)
Sensing current:................................................... 5 mA
Accuracy:................................................................ ±3°C
60 mA @ 240 V AC for 800 µs every cycle
14 mA @ 48 V DC
±0.2 A (4.0 A to 15 A)
greater
Direct: ±2% of reading or ±0.1 A, whichever is greater
1.0 s at 50×
2.0 s at 40×
continuous at 3× rated current
<0.1 VA at 5 A
SPECIFICATIONS
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