Specifications

G6
GE Limitamp
®
Medium Voltage Motor Control
Components
G
Applications
• Management and primary protection of distribution feeders
• Management and backup protection of busses, transformers
and power lines
• Reliable distributed generation interconnection protection
system
Key Benefits
• Unique built-in control features – comprehensive feeder
protection plus automatic Transfer Scheme, Under Voltage
and Under Frequency auto-restore
• Best in class man machine interface (MMI) – large backlit
display with 40 characters to view relay information and
settings in direct sunlight, full numerical keypad, and set-
point navigation keys.
• Accurate metering under sever system disturbances –
tracks power system frequency and adjusts sampling rate
accordingly
• Improve uptime of auxiliary equipment – through I/O mon-
itoring
• Reduce troubleshooting time and maintenance costs –
IRIGB time synchronization, event reports, waveform capture,
data logger
• Minimize replacement time – draw-out construction
• Simplify testing – built-in simulation features
• Cost Effective Access information – via Modbus RTU and
DNP 3.0 Level 2 protocols, through standard RS232, RS485
& RS422 serial ports, and optional Modbus RTU over TCP/IP
through embedded Ethernet Port to connect to 10MB
Ethernet local or wide area networks
• Complete asset monitoring – analog I/O full metering
including demand & energy
• Follow technology evolution – flash memory for product
field upgrade
• Long lasting life – when exposed to chemically corrosive
and humid environments with optional conformal coating
Features
Protection and Control
• Complete time, instantaneous & directional phase, neutral,
ground and negative sequence overcurrent
• Time, instantaneous & directional sensitive ground overcurrent
• Voltage restraint overcurrent
• Bus phase and line auxiliary undervoltage
• Bus phase overvoltage
• Neutral overvoltage
• Negative sequence voltage
• Undervoltage automatic restoration
• Bus underfrequency
• Underfrequency automatic restoration
• Automatic bus transfer
• Breaker failure
• Manual close control
• Cold load pickup control
• Power factor control
• 4 shot recloser
• 4 setting groups
• Syncrocheck - V, f, Hz, & dead-source
• 20 Programmable logic inputs
Monitoring and Metering
• Fault locator, record of last 10
• Breaker operation & trip failure
• VT Failure
• Power factor – two independent stages
• Analog input – level and rate
• Total breaker arcing current
• Event recorder
• Oscillography and Data Logger
• Metering: V I Hz W var VA PF
• Demand: Ia , Ib , Ic , MW, Mvar, MVA
User Interface
• Fr
ont Panel LEDs, full key pad, and backlit LCD display
• RS232, RS485 and RS422 ports - up to 19,200 bps
• Ethernet port – 10Mbs
• Multiple protocols – ModBus
™
RTU, ModBus
™
RTU TCP/IP,
DNP 3.0 Level 2
• Includes EnerVista software
Multilin 750/760 Feeder Protection System