GE Multilin F650

Multilin F650

Cost effective protection, automation and control of distribution feeders

The Multilin F650 has been designed for the protection, control and automation of feeders or related applications.

The Multilin F650 feeder protection relay provides high speed protection and control for feeder management and bay control applications, and comes with a large LCD and single line diagrams that can be built for bay monitoring and control for various feeder arrangements including ring-bus, double breaker or for breaker and half.

Key Benefits

Comprehensive and flexible protection and control device for feeder applications

Increased system uptime and improved stability with load shedding and transfer schemes

Advanced automation capabilities for customized protection and control solutions

Human machine interface (HMI) with graphical LCD, programmable buttons, and easy keys for selecting setting menus, and submenus

Reduced replacement time with modular draw-out construction

Reduced troubleshooting time and maintenance costs with IEEE 1588 (PTP), IRIG-B and SNTP time synchronization (configuration of two different SNTP masters), event reports, waveform capture, and data logger

Simplified system integration with communications supporting serial and Ethernet interfaces as well as multiple protocols

Embedded IEC® 61850 protocol (and support for edition 2), IEC 60870-5-103/104. IEC 62439/PRP/HSR, IEEE 802.1D/RSTP

Proven interoperability and KEMA 61850 Edition 2 certified

Applications

Primary or back-up protection and control for feeders on solidly grounded, high impedance grounded or resonant grounded systems

Bus blocking/Interlocking schemes

High-speed fault detection for arc flash

Throw over schemes (bus transfer scheme applications)

Load shedding schemes based on voltage and frequency elements

Distributed Generation (DG) interconnect protection, including active and passive anti-islanding

Key Features

Time, instantaneous & directional phase, neutral, ground and sensitive ground overcurrent

Manual close with cold load pickup control, Forward Power and Directional Power Units

Load encroachment supervision

Wattmetric ground fault detection

Positive and negative sequence based over/under voltage elements

2nd Harmonic restraint

CT Supervision

Four-shot autorecloser with synchronism check

Trip circuit supervision, breaker control and

breaker failure

Frequency protection (rate of change and six

stages of under and over frequency)

Broken conductor and locked rotor

Programmable digital inputs and outputs

6 Setting Groups

The F650 feeder protection relay provides high speed protection and control for feeder management and bay control applications, including:

25    Synchrocheck

27/27X    Bus/Line Undervoltage

32    Sensitive Directional Power

32FP    Forward Power

32N    Wattmetric zero-sequence directional

46    Negative Sequence Time Overcurrent

47    Negative Sequence Voltage

48    Blocked Rotor

49    Thermal Image - overload protection

50 BF    Breaker Failure

50PH/PL    Phase Instantaneous Overcurrent (High/Low)

50N    Neutral Instantaneous Overcurrent

50G    Ground Instantaneous Overcurrent

50SG    Sensitive Ground Instantaneous Overcurrent

50IG    Isolated Ground Instantaneous Overcurrent

51N    Neutral Time Overcurrent

51G    Ground Time Overcurrent

51SG    Sensitive Ground Time Overcurrent

51PH/V    Voltage Restraint Phase Time Overcurrent

51PL/V

59/59X    Bus/Line Overvoltage

59NH/NL    Neutral Overvoltage - High/Low

67P    Phase Directional Overcurrent

67N    Neutral Directional Overcurrent

67G    Ground Directional Overcurrent

67SG    Sensitive Ground Directional Overcurrent

79    Autorecloser

81 U/O    Under/Over Frequency Broken Conductor Detection

81R    Frequency Rate of Change

VTFF    VT Fuse Failure Detection

Load Encroachment

Key Features

Fault locator, fault and event recorder

Comprehensive breaker monitoring

High resolution oscillography and Data Logger, with programmable sampling rate

Metering: V, I, Hz, W, VA, PF

Demand: Ia, Ib, Ic, Ig, Isg, I2. MW, MVA

Breaker Arcing Current (I2t)

Fault Locator

Monitoring & Metering

The F650 provides advanced monitoring and metering that includes:

Current Transformer Failure

In event of abnormal behaviour of the CT or a loss of phase the F650 detects a change in zero sequence current to initiate a CT failure event and an output that can be used to block critical protection functions. 

This feature can be inhibited either by zero sequence voltage, ground /sensitive ground current.

2nd harmonic inhibit

The F650 provides 2nd harmonic detection that can be used to block sensitive elements, especially during transformer energization. 

The setting can be based on any phase, any two phases, all three phases or an average of the 3 phases.