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

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

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

TYPICAL WIRING

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)

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)

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)

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)

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

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

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)

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

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

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

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

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

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

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