MIW II - Legacy Directional Power Protection System
Manufacturing for this product has been discontinued. As an alternative, please refer to the Multilin 350 or 889 relays.
The MIW II, a member of the M II Family of Relays, is a digital device that provides directional power and loss of field protection for generators. Operation of the MIW II is based on the calculated direction of 3 phase power flow. The MIW II can be ordered with either one of the following two option packages:
Four protection elements for directional power
Three protection elements for directional power, one loss of field element, and one fuse failure element
Configurable logic, curves, I/Os and LEDs
Flash memory for field upgrades
Two settings groups
Password protection for local operation
Automatic display of information from last 5 faults
Drawout case for easy maintenance
AC/DC power supply
Access via front panel keypad or communication links
Diagnostic features - event recording and analog/digital oscillography
Isolated front RS232 serial port
Controlling power flow in AC generator applications of any size
Available versions are three power protection elements (32_x) for MIWII1000 and four power protection elements for MIWII2000
Loss of field/excitation protection element (40)
VT fuse failure protection element (60)
6 outputs, four configurable, plus trip and alarm
Metering values for Ia, voltage values, P, Q, S, V1, V2, and angle
24-event record
Analog/digital oscillography - 24 cycles at 8 samples per cycle
Information displayed on last 5 relay trips
2x16 character LCD display
6 LED indicators with 4 configurable in function and in color
Front RS232 and rear RS485 ports using ModBus® RTU protocol up to 19,200 bps
EnerVista software - an industry leading suite of software tools that simplifies every aspect of working with GE Multilin devices
