GE Multilin MII Family Modular Microprocessor Family

GE Multilin MII Family Modular Microprocessor Family

Key Benefits

• Ease of use and installation - same front panel programming,

common cutout

• Follow technology evolution - Flash memory for product field

upgrades

• Low priced scalable options - event reports, waveform

capture, recloser, breaker fail

• Reduce troubleshooting and maintenance cost - Event

reports, waveform capture

• Design flexibility - Easy to use programming logic

• Asset monitoring - Breaker health, and breaker failure

protection

• Access to information - Modbus RTUTM communications

• AC/DC power supply

• Easy access via front panel keypad or communication links

Applications

Feeder protection

• Main protection for small generators and motors

• Backup/Auxiliary protection for transformers, motors,

generators and busbars

• Overload protection

• Automatic transfer equipment

• Load shedding and restoration schemes

• Backup directional overcurrent protection

• Reverse power protection

• Synchrocheck

Features

Features and Benefits

Digital relay

Incorporates protection, and controlLocal and remote user interfaces

.Internal memory

Diagnostic features - event recording, and oscillographyUser interface and ProgrammingFront Panel LEDs, key pad, and 2x16 character LcD display6 LED indicators, 4 configurable in function and colorFront Rs232 and rear Rs485 ports using ModBus@ RTUprotocol up to 19,200 bps

PHASE TIME OVERCURR ENT

Pickup level: 10 – 240% of CT rating

Curve shapes: Definite time, inverse, very

inverse, extremely inverse,

custom

Time multiplier: 0.05 – 2.00 in steps of 0.01

Definite time: Up to 99.99 sec (10 msec steps)

Accuracy:

Level: ±3% in the complete range

Time: Greater of ±3% or ±25 ms

GROUND TIME OVERCURR ENT

Pickup level: 10 – 240% of CT rating

Curve shapes: Definite time, inverse, very

inverse, extremely inverse,

custom

Time multiplier: 0.05 – 2.00 in steps of 0.01

Definite time: Up to 99.99 sec (10 msec steps)

Accuracy:

Level: ±3% in the complete range

Time: Greater of ±3% or ±25 ms

PHASE INSTANT ANEOU S

Pickup level: 10 – 3000% of CT rating

Definite time: Up to 99.99 sec (10 msec steps)

Accuracy:

Level: ±3% in the complete range

Time: Greater of ±3% or ±25 ms

GROUND INSTANT ANEOU S

Pickup level: 10 – 3000% of CT rating

Definite time: Up to 99.99 sec (10 msec steps)

Level: ±3% in the complete range

Time: Greater of ±3% or ±25 ms

GROUND DIRECT ION AL

Torque angle: -90°, +90° (1° steps)

Direction: Forward/back (rew)

Loss of voltage polarization logic:

Enable/disable

ISOL ATED GROUND DIRECT ION AL (MIN option s)

Voltage pickup levels: Vh 2 – 70 V in steps of 0.01 V

Vi 2 – 70 V in steps of 0.01 V

Current pickup levels: I low 5 – 400 mA in steps of 1 mA

I hi 5 – 400 mA in steps of 1 mA

Definite time: 0 – 99.99 sec in steps of 10 msec

Instantaneous trip deviation time:

0 – 99.99 sec in steps of 100 msec

Torque angle: -90°, +90° (1° steps)

PETERSEN CO IL GROUND DIRECT ION AL

Voltage pickup levels: Vh 2 – 45 V in steps of 0.1 V

Current pickup levels: I low 5 – 100 mA in steps of 1 mA

Real power pickup levels:

10 – 4500 mW in steps of 0.1 mW

Definite time: 0.03 – 3 sec in steps of 10 msec

Instantaneous trip deviation time:

1 – 10 sec in steps of 100 msec

Torque angle: -90, +90 (0.01 steps)

DIRECT ION AL REVERSE POWER

Power pickup level: 0.01 – 0.99 x Rated MW

Time delay: 0.2 – 120 seconds in steps of 0.1

Block from online: 0 – 5,000 sec.

DIRECT ION AL LO W FOR WARD POWER

Power pickup level: 0.01 – 0.99 x Rated MW

Time delay: 0.2 – 120 seconds in steps of 0.1

Block from online: 0 – 15,000 sec.

LO SS OF EXCITATION

Circle 1 diameter: 2.5 – 300 ohm

Circle 1 offset: 2.5 – 150 ohm

Circle 1 trip delay: 0.1 – 10 sec

Circle 2 diameter: 2.5 – 300 ohm

Circle 2 offset: 2.5 – 150 ohm

Circle 2 trip delay: 0.1 – 10 sec

THERMAL IMAGE UN IT

Tap current: 10 – 240% of CT rating

Cool rate:

T1 3 – 600 min

T2 1 – 6 x T1

K 1 – 1.2

Alarm level: 70 – 100%