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MIFII DIGITAL FEEDER PROTECTION A Cost Effective Protection Solution for Overcurrent Protection at Any Voltage Level

MIFII DIGITAL FEEDER PROTECTION A Cost Effective Protection Solution for Overcurrent Protection at Any Voltage Level. GE Multilin www.gemultilin.com. BLOCK DIAGRAM. MIFII Protection and Control characteristics:. Combines Overcurrent Protection and Multiple-shot Reclosing in One Compact Relay.

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MIFII DIGITAL FEEDER PROTECTION A Cost Effective Protection Solution for Overcurrent Protection at Any Voltage Level

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  1. MIFII DIGITAL FEEDER PROTECTIONA Cost Effective Protection Solution for Overcurrent Protection at Any Voltage Level GE Multilin www.gemultilin.com

  2. BLOCK DIAGRAM MIFII Protection and Control characteristics: Combines Overcurrent Protection and Multiple-shot Reclosing in One Compact Relay

  3. MIFII – OVERCURRENT PROTECTION REPLACE ALL THIS………………………………………….……….WITH MIFII +

  4. APPLICATIONS • The MIFII can be used for: • Applicable to Electric Utilities and Industrial Plants • 50 or 60 Hz Systems • Main Protection for Medium and Low Voltage Feeders • Main Protection for Power Transformers (less than 10MVA) • Core Balance Differential Protection for Motors • Backup Protection for Power Transformers (for any power level) • Backup Protection for Generators • Backup Protection for Transmission Lines • Backup Protection for Substation Busbars • Thermal Image Protection/Supervision for Cables, Power Transformers, Grounding Resistors and Generation Elements

  5. TYPICAL WIRING

  6. PROTECTION AND CONTROL MIFII Protective Functions include: • Phase Time Overcurrent (51P) 0.1 – 2.4 A (1Amp model) 0.5 – 12A (5Amp model) • Ground Time Overcurrent (51G) 0.1 – 2.4 A (1Amp model) 0.5 – 12A (5Amp model) • Phase Inst Overcurrent (50P-1, 50P-2) 0.1 to 30.0 (1 Amp model) 0.5 to 150.0 (5 Amp model) • Ground Inst Overcurrent (50G-1, 50G-2) 0.1 to 30.0 (1 Amp model) 0.5 to 150.0 (5 Amp model) • Sensitive and Very Sensitive Ground Overcurrent Models 0.005-0.12 A or 0.002-0.048A (1 Amp model) • Selectable Time Overcurrent Curves (Definite Time, ANSI, IAC or IEC)

  7. PROTECTION AND CONTROL MIFII Time Current Curve Options: • Preconfigured Overcurrent Curves, Definite Time Curve &One User Configurable Overcurrent Curve (FlexCurve) • Selectable ANSI, IAC or IEC curve option when ordering • IAC Option • IAC Extremely Inverse • IAC Very Inverse • IAC Inverse • IAC Inverse Long • IAC Inverse Short • ANSI Option • Extremely Inverse • Very Inverse • Inverse • IEC Option • Inverse (IEC Curve A) • Very Inverse (IEC Curve B) • Extremely Inverse (IEC Curve C)

  8. PROTECTION AND CONTROL MIFII Protective Functions include: • Thermal Image Protection (49) • Cold Load Pickup (available in Option 2 models)(Phase IOC & TOC multipliers) • Breaker Failure to Open (available in Option 2 models) • I2 Counter with Alarm for Breaker Health Monitoring (available in Option 2 models)

  9. PROTECTION AND CONTROL MIFII Programmable Logic & I/O Features • Logic Configuration (available in Option 2 models) • 4 logic groupings (Logic 1, Logic 2, Logic 3 and Logic 4)

  10. PROTECTION AND CONTROL MIFII Programmable Inputs, Outputs & LEDs: • Programmable Inputs and Outputs (available in Option 1 & 2 models)

  11. PROTECTION AND CONTROL MIFII Control Features: • Four Shot Recloser for Three-Pole Application (available in Option R models) • Select protective functions to be active before and after each reclose shot • Selectable shot dead times • Selectable reset time and incomplete sequence time • 2 Setting groups • Manual Open/Close Breaker • Security • Access password for setting changes • Local access password

  12. METERING & MONITORING MIFII Metering & Monitoring Features: • Phase and ground currents metering(Ia, Ib, Ic, Ig) on front display in primary or secondary values • Thermal image metering • 32 event recorder with analog and pickup/trip details (available in Option 1 and Option 2 models)

  13. METERING & MONITORING MIFII Metering & Monitoring Features: • One oscillography record (available in Option 1 and Option 2 models) • 8 samples per cycle with a length of 24 cycles (including 2 prefault cycles) • Instantaneous values Ia, Ib, Ic, Ig • Pickups • Trip inhibition by digital input • Trips • Ready (protection in service) • Auxiliary digital outputs • Digital inputs • Breaker 52A, Breaker 52B, (digital input status) • Breaker Closed (OPTION 2 models) • Breaker opening failure (OPTION 2 models) • I2 alarm (OPTION 2 models) • Cold load pickup (OPTION 2 models) • Group 2 selection by digital input • EEPROM failure • Default settings/User settings

  14. HARDWARE DISPLAY & LEDS • Text 2x16 display • 6 LEDs with customizable label panel (4 programmable with Option 1 and Option 2 models) • Able to Read Metering Display in Direct Sunlight KEYPAD • ESC/RESET key • UP/DOWN keys for easy navigation • ENTER function • Menu key FRONT PORT • Electrically isolated front RS232 communication port for programming, data retrieval and firmware update DRAWOUT CONSTRUCTION • Entire MIFII unit is removable from case

  15. DIMENSIONS OPTIONAL DEPTH REDUCING COLLAR (B1315P1) Compact Design in a Modular Package for Easy Maintenance

  16. EnerVista MII Setup Software (no-charge) MIIPC Software provides the following functions: Logic Settings Oscillography Metering Powerful Configuration Tool That Get the MIFII up and Running in Minutes

  17. COMMUNICATIONS • A front mounted RS232 and a rear RS485 port allow easy user interface via a PC • Modbus RTU protocol is used for all ports • The relay supports baud rates from 300 to 19200 bps. Settable Modbus Slave address. • Use optional MULTINET-FE to get Modbus TCP/IP connection (10MBps) • Compatible with Viewpoint Monitoring Software

  18. MIFII - ORDER CODE *** AC/DC Power Supply OPTION TO GET HARSH CONFORMAL COATING – H (last letter of model number)

  19. B1315P1 Depth reducing collar (reduces the mounting depth by 2.45 inches) B1343P1 S1/S2 case adapting collar for retrofit installations MIFII - ACCESSORIES OPTIONAL S1/S2 CASE ADAPTER COLLAR (B1343P1)

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