SR750-P5-G5-S5-HI-A20-G-E | GE Multilin Feeder Protection System Relay

Description

The GE Multilin 750-P5-G5-S5-HI-A20-G-E is a Feeder Protection System Relay that features 5 A phase current inputs, 5 A zero sequence inputs, eight 4 - 20 mA analog outputs, with an enhanced display and harsh chemical enviroment option.

The 750-P5-G5-S5-HI-A20-G-E is one of several digital relays from General Electric’s 750/760 Feeder Protection System line available here at AX Control.   These units are designed to make electrical connections to external equipment while providing protection and control of distribution feeders.    Units like this one are designed for mounting as a solitary unit or they can be mounted in conjunction with other SR series relay units using a standard 19-inch panel rack.  The 750-P5-G5-S5-HI-A20-G-E has 5 amp phase current inputs.  It is designed with 5 amp zero-sequence current inputs and 5 amp sensitive ground current inputs.  There are eight 4-20 mA analog outputs located on the unit.   The 750-P5-G5-S5-HI-A20-G-E uses an 88-300 VDC 70-265 VAC @48-62 Hz power supply.   It is rated for use within harsh chemical environments.  The 750-P5-G5-S5-HI-A20-G-E offers a number of standard features and benefits.  These include automatic bus transfer and synchro check (V, f, Hz, and dead source), reverse power protection, and restricted Earth Fault protection.   The unit has several networking interfaces including Ethernet,  RS232, RS485, and RS422 ports that can handle protocols like Modbus RTU, TCP/IP, and DNP 3.0. 

summarize The MIF II is a member of the MII family of protective relays that function as primary loop protection in distribution networks of any voltage level, as well as backup/auxiliary protection for transformers, generators and motors. Protection features include time-delay overcurrent, instantaneous overcurrent (two stages) and thermal image protection. Depending on the model selected, the overcurrent element can be either three-phase and grounded, or single-phase. Optional protection features include cold load start, circuit breaker failure protection, circuit breaker condition, configurable logic, and automatic reclosing. Each protection element can be selectively enabled or deactivated through the front panel or communication. Flexible setup and optional ANSI, IEC, IAC or EPTAR-C curve models ensure proper fit with other devices. The standard configuration of the MIF II relay has 2 fixed digital inputs and 6 fixed digital outputs. As an alternative, 2 inputs and 4 outputs can be configured by the user. The standard MIF II has 6 fixed status LED indicators, or 4 of them can be configured by the user. The panel also has a 5-key keypad and a 16x2 LCD display, which are easy to use user interfaces. The user can use the keyboard on the panel to set the communication baud rate and relay address. The relay is configured with a front RS232 communication port and a rear RS485 communication port to which the computer connects and accesses the relay via the ModBus®RTU protocol. By using an external converter, such as GE Multilin DAC300 or F485, the rear RS485 port can be converted to an RS232 port or a fiber optic port (plastic or glass fiber). Windows® based EnerVista software for setting up and configuring MIF relays is included free of charge. The MIF II relay is accessed from a computer using the MII EnerVista Setup software through the RS232 communication port located on the relay panel. Use EnerVista software to view or modify relay setting values and configure relays (input, output, LEDS and configurable logic), as well as display measurement information and real-time status of relays. If the relay is equipped with the appropriate options, EnerVista software can be used to display the latest fault information, such as incident reports and wave logging. The MIF has a drawout structure and is housed in a 1/4 19 "chassis.

Major advantage Excellent cost performance depending on the actual configuration - event reporting, waveform capture, reclosing, circuit breaker failure Reduce troubleshooting time and maintenance costs - event reporting, waveform capture Design flexibility - easy to use programmable logic Critical equipment monitoring - circuit breaker operating conditions and circuit breaker failure protection Information Access -Modbus RTU communication Configurable logic, curves, I/O and LEDS Flash technology for field upgrades Two sets of fixed values Password protection for on-site operation The latest fault information is automatically displayed AC/DC power supply Improved user interface Access via the keyboard or communication link on the front panel Compatible with EnerVista Isolated RS232 serial port on front panel use Main loop protection for any voltage level distribution network Transformer, generator and motor backup/auxiliary protection peculiarity Protection and control Phase and ground delay overcurrent and instantaneous overcurrent Thermal image protection "N" option for single-phase or grounded applications IAC time-current curve EPTAR-C Time-current curve Circuit breaker control Four times automatic reclosing Cooling load action element Configurable circuit breaker failure function Configurable I/O 6 outputs: for tripping, required operations, 4 assists

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