Transmission Line Protection

L30 Line current differential System

Key Benefits

Cost effective Current Differential System for high-speed Lines and Cables

• Proven current differential protection ensures secure highspeed tripping

• Adaptive restraint characteristic provides excellent security against measurement errors including CT saturation.

• Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P&C life cycle costs

• Advanced fault and disturbance recording, including internal relay operating signals thus eliminating the need for external recording devices

• Increased sensitivity through dynamic charging current compensation and communication channel asymmetry compensation

• Phasor Measurement Unit - Synchronized phasor information according to IEEEC37.118 standard

Applications • Overhead lines and underground cables of different voltage levels • Circuits with tapped transformer feeders • Suitable for three terminal line configurations, with channel redundancy and direct transfer tripping (DTT)

• Wide area system monitoring and control and using integrated protection and synchrophasor measurement • Applications requiring three-pole autoreclosing and independent synchrocheck supervision

Features Protection and Control

IEC 61850 Process Bus Interface

• Line current differential with adaptive restraint

• Robust communications with up to 8 HardFiber Bricks

• Stub bus protection

• Seamless integration with existing L30 functions

• Breaker failure

• Redundant architecture for dependability and security

• Three pole Autoreclose • Underfrequency protection • Non-Directional overcurrent: Phase, neutral and negative sequence • Phase over/under voltage, negative sequence overvoltage • Two independent Synchronism check elements

Monitoring and Metering • Real time monitoring of remote, local and differential per phase currents • Oscillography - 64 samples/cycle, up to 64 records • Event Recorder - 1024 time tagged events, with 0.5ms scan of digital inputs

Communications

• Data Logger - Up to 16 channels with user selectable sampling rate

• Networking interfaces – 100Mbit Fiber Optic Ethernet, RS485, RS232, RS422, G.703, C37.94

• Synchronised measurement of voltage & current and sequence component phasors - 1 to 60 phasors/sec

• Multiple Protocols - IEC61850, DNP 3.0 Level 2, Modbus RTU, Modbus TCP/IP, IEC60870-5-104

EnerVista™ Software

• Direct I/O – secure, high-speed exchange of data between L30s for Direct Transfer Trip applications • Embedded Managed Ethernet Switch with 4 - 100 Mbit Fiber optic ports and 2 copper ports

g

Multilin

• Graphical Logic Designer and Logic Monitor to simplify designing and testing procedures • Document and software archiving toolset to ensure reference material and device utilities are up-to-date

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Transmission Line Protection

L30 Line Differential System

Protection and Control

L30 - Protection, Metering, Monitoring and Control

The L30 is a cost effective line current differential protection relay intended for sub-transmission and medium voltage lines and cables providing reliable and secure operation even under the worst case power system conditions. The L30 provides secure high-speed fault detection and clearance suitable for three-pole tripping applications. Part of the Universal Relay family, the L30 comes with a variety of versatile features truly integrating protection, monitoring, metering, communication and control in one easyto-use device. The Universal Relay family offers a high degree of modularity in its design and functionality providing superior performance in protection and control meeting the toughest requirements of the marketplace.

The L30 is the single point for protection, control, metering, and monitoring in one integrated device that can easily be connected directly into DCS or SCADA monitoring and control systems like Viewpoint Monitoring as shown.

Current Differential Protection The L30 current differential protection relay uses superior and patented algorithms to address the challenges of bandwidth , security, dependability and sensitivity in current differential relaying. Bandwidth requirements are effectively addressed by means of a patented new data consolidation technique called “phaselets”. This permits application within a communications bandwidth of 64 Kbps, and can detect faults within a half cycle plus channel delay. The L30 innovative dual slope adaptive restraint characteristic, based on estimates

of measurement errors, allow the relay to be secure on severe external faults while maintaining sensitivity for internal faults. The estimate of errors in the input currents permits more sensitive settings than those used in the traditional percent differential schemes. The L30 approach to clock synchronization relies upon precise distributed synchronization. Clocks are phase synchronized to each other and frequency synchronized to the power system frequency. Each relay compares its clock to the phase of the other clocks and

Functional Block Diagram

79 CLOSE

TRIP

50DD 50P 50_2 51P 51_2 50BF 87L Data From/To Remote End (via Dedicated Communications)

50N 51N

FlexElement

TM

Metering

Transducer Inputs

59P 27P

50G

51G 59X

L30 Line Differential System

27X

59N 25 831706AS.CDR

2

Enhanced additional security is provided by a sensitive current disturbance detector, which can be used to supervise the current differential element.

Charging Current Compensation For long lines and especially for underground cables, the charging current may be large and result in excessively high pickup settings. The L30 can dynamically

ANSI Device Numbers & Functions

52

Monitoring

makes appropriate adjustments. This allows for greater transient ride-through for power system and communications disturbances.

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Device Number 25 27P 27X 50BF 50DD 50G 50N 50P 50_2 51G 51N 51P 51_2 52 59N 59P 59X 79 87L

Function Synchronism Check Phase Undervoltage Auxiliary Undervoltage Breaker Failure Current Disturbance Detector Ground Instantaneous Overcurrent Neutral Instantaneous Overcurrent Phase Instantaneous Overcurrent Negative Sequence Instantaneous Overcurrent Ground Time Overcurrent Neutral Time Overcurrent Phase Time Overcurrent Negative Sequence Time Overcurrent AC Circuit Breaker Neutral Overvoltage Phase Overvoltage Auxiliary Overvoltage Automatic Recloser Segregated Line Current Differential

L30 Line Differential System

Enhanced Monitoring Features The L30 uses advanced error detection and supervising functions to secure the L30 against maloperation due to erroneous data. High bit error rates are addressed by means of computing a 32 bit CRC check sum, effectively addressing the concerns of multiple bit errors due to high channel noise. On multiplexed channels, channel asymmetry may be expected due to path switching spurious differential currents, which can endanger the security of the differential system. By using GPS time synchronization, up to 10ms of channel asymmetry can be compensated for. Extra security has been implemented in the L30 to ensure proper operation on the event of IRIG-B signal failure. Integrated channel monitoring provides real-time diagnostic data on the health of the L30. Communications channel deterioration or failure will activate an alarm, and can be used to enable backup protection. Channel propagation delay is monitored and adjusted according to variations in communication paths.

Communication Topologies Relays can communicate through direct fiber, RS422, G.703, IEEE C37.94 interfaces at 64Kbps, with extensive channel monitoring and diagnostics are included. In a current differential scheme, the L30s exchange data via the communication link, acting either as master collecting data, making calculations and making all relevant trip and restraint decisions, or as slave only transmitting current data to the one acting as master. For two terminal applications, use the redundant communications capability of the L30 for optimal reliability of the current differential line protection. For this scheme, data is continuously transmitted over both channels, so if a failure occurs, the L30 will continue to provide current differential protection. For three terminal applications, advanced inter-relay communication features

eliminate the need for redundant communication channels due to the ability of the L30 to automatically switch between master and slave mode, maintaining a dependable system even with a failure of one of the communication channels.

Overvoltage and undervoltage protection Long lines under lightly loaded conditions or no-load may experience voltages exceeding rated per unit voltage level of the line. Use the phase overvoltage element of the L30 to initiate a local trip as well as a remote trip using direct transfer trip.

Overcurrent Functions The L30 provides overcurrent functions for phase, neutral and ground which can run parallel with the primary differential element or can be programmed to provide primary protection under conditions the differential element is not available.

Direct transfer trip (DTT) Use the direct transfer trip feature of L30 to trip remote breaker. Both single pole and three pole direct transfer trips are supported. Up to eight signals can be sent over pilot communications channels

selectable through user configurable logic.

Autoreclosing The L30 provides multi-shot auto reclosing for three pole applications with independently settable dead time for each shot . Auto-reclose can be dynamically blocked by user programmable logic. Four different auto-relcose modes are available enabling the users to select the reclosing mode to suit specific applications.

Transmission Line Protection

compensate the charging current thus increasing its sensitivity to the fault current on long transmission lines.

Synchronism Check The L30 monitors voltage difference, phase angle difference and slip frequency to ensure proper breaker closure as per user requirements. The L30 provides additional enhancements in synchronizing by checking dead source conditions for synchronism bypass under these conditions.

Breaker Failure The L30 provides two fully independent breaker failure protection elements.

IEC 61850 Process Bus The IEC 61850 Process Bus module is designed to interface with the GE Multilin HardFiber System, allowing bi-directional

Typical Applications TYPICAL 2-TERMINAL APPLICATION

GE’s JungleMUX (SONET)

L30

- G.703 - RS422 - C37.94

GE’s JungleMUX (SONET)

ALT.

MAIN

GE’s JungleMUX (SONET)

- G.703 - RS422 - C37.94

L30

GE’s JungleMUX (SONET)

Typical two and application of L30. L30 supports a variety APPLICATION of media cards for signalling between L30’s TYPICAL 3-TERMINAL including direct multimode or single mode fibre, RS422, G.703 and IEEE C37.94.

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L30 Line Differential System

FlexLogicTM Designer

Transmission Line Protection

The L30 includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.

Fault and Disturbance Recording The advanced disturbance and event recording features within the L30 can significantly reduce the time needed for postmortem analysis of power system events and creation of regulatory reports. Recording functions include:

Flexlogic™ allows for customizing the L30 to operate and control the breakers and other auxiliary devices needed to fit most line protection schemes and applications.

• Sequence of Event (SOE) - 1024 time stamped events • Oscillography, - 64 digital & up to 40 Analog channels

IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with the existing Universal Relay applications, including protection functions, FlexLogic, metering and communications. The GE Multilin HardFiber System offers the following benefits: • Communicates using open standard IEC 61850 messaging • Drastically reduces P&C design, installation and testing labor by eliminating individual copper terminations • Integrates with existing T60’s by replacing traditional CT/VT inputs with IEC 61850 Process Bus module • Does not introduce new Cyber Security concerns

FlexLogic™ FlexLogic™ is the powerful UR-platform programming logic engine that provides the ability of creating customized protection and control schemes thereby minimizing the need, and the associated costs, of auxiliary components and wiring. Using FlexLogic™, the L30 can be programmed to provide required tripping logic along with custom scheme logic for line breaker control and interlocking and dynamic setting group changes.

Scalable Hardware The L30 is available with a multitude of I/O configurations to suit the most demanding application needs. The expandable modular design allows for easy configuration and future upgrades.

Visit the HardFiber System product page on the GE Multilin web site for more details.

• Flexible, modular I/O covering a broad range of input signals and tripping schemes

Advanced Automation

• Mechanically latching outputs can be used to develop secure interlocking applications and replace electromechanical lockout relays

The L30 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average line relay. The L30 integrates seamlessly with other UR relays

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for complete system protection.

Monitoring and Metering

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• Data Logger, disturbance recording – 16 channels up to 1 sample / cycle / channel • Fault Reports - Powerful summary report of pre-fault and fault values The very high sampling rate and large amount of storage space available for data recording in the L30 can eliminate the need for installing costly standalone recording equipment.

Advanced Device Health Diagnostics The L30 performs comprehensive device health diagnostic tests during startup and continuously at runtime to test its own major functions and critical hardware. These diagnostic tests monitor for conditions that could impact security and availability of protection, and present device status via SCADA communications and front panel display. Providing continuous monitoring and early detection of possible issues helps improve system uptime. • Comprehensive device health diagnostic performed during startup • Monitors the CT/VT input circuitry to

L30 Line Differential System

Communications The L30 provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides highbandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available redundant Ethernet option and the embedded managed Ethernet switch provide the means of creating fault tolerant communication architectures in an easy, cost-effective manner without the need for intermediary communication hardware. The L30 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems. • IEC61850 • DNP3.0 • IEC60870-5-104

• Modbus RTU, Modbus TCP/IP

Interoperability with Embedded IEC61850 Use the L30 with integrated IEC61850 to lower costs associated with line protection, control and automation. GE Multilin’s leadership in IEC61850 comes from thousands of installed devices and follows on seven years of development experience with UCA 2.0. • Replace expensive copper wiring between devices with direct transfer of data using GOOSE messaging • Configure systems based on IEC61850 and also monitor and troubleshoot them in real-time with EnerVista™ Viewpoint Engineer • Integrate GE Multilin IEDs and generic IEC61850-compliant devices seamlessly in EnerVista™ Viewpoint Monitoring

Multi-Language The L30 supports English, French, Russian, and Chinese languages on the front panel, EnerVista™ setup software, and product

manual. Easily switch between English and an additional language on the local displays without uploading new firmware.

EnerVistaTM Software

Transmission Line Protection

validate the integrity of all signals

The EnerVista™ Suite is an industry-leading set of software programs that simplifies every aspect of using the L30 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the L30 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR Setup software included with every UR relay, to carry out postmortem event analysis to ensure proper protection system operation.

EnerVista™ Launchpad EnerVista™ Launchpad is a powerful software package that provides users with all of the setup and support tools needed for configuring and maintaining GE Multilin products. The setup software within Launchpad allows configuring devices in

Power System Troubleshooting The L30 contains many tools and reports that simplify and reduce the amount of time required for troubleshooting power system events.

Record the operation of the internal L30 elements and external connected devices with 1ms time-stamped accuracy to identify the Sequence of Operation of station devices during line faults and disturbances.

Analyze line faults using both analog and digital power system quantities that are measured and recorded up to a rate of 64 samples per cycle.

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L30 Line Differential System

Transmission Line Protection

real-time by communicating using serial, Ethernet , or modem connections, or offline by creating setting files to be sent to devices at a later time. Included in Launchpad is a document archiving and management system that ensures critical documentation is up-to-date and available when needed. Documents made available include:

audits. Tools available in Viewpoint Maintenance include:

• Plug-&-Play Device Monitoring • System Single-Line Monitoring & Control • Annunciator Alarm Screens

• Device Health Report

• Trending Reports

• Single Click Fault Data Retrieval

• Automatic Event Retrieval • Automatic Waveform Retrieval

EnerVista™ Integrator

Viewpoint Engineer

• Manuals • Application Notes • Guideform Specifications • Brochures • Wiring Diagrams • FAQ’s • Service Bulletins

Viewpoint Engineer is a set of powerful tools that will allow the configuration and testing of UR relays at a system level in an easy-touse graphical drag-and-drop environment. Viewpoint Engineer provides the following configuration and commissioning utilities:

Viewpoint Monitoring is a simple-to-use and full-featured monitoring and data recording software package for small systems. Viewpoint Monitoring provides a complete HMI package with the following functionality:

EnerVista™ Integrator is a toolkit that allows seamless integration of GE Multilin devices into new or existing automation systems. Included in EnerVista™ Integrator is: • OPC/DDE Server • GE Multilin Drivers • Automatic Event Retrieval • Automatic Waveform Retrieval

• Graphical Logic Designer

Viewpoint Monitoring

• Settings Security Audit Report

• Graphical System Designer • Graphical Logic Monitor • Graphical System Monitor

Viewpoint Maintenance Viewpoint Maintenance provides tools that will create reports on the operating status of the relay, simplify the steps to download fault and event data, and reduce the work required for cyber-security compliance

User Interface The L30 front panel provides extensive local HMI capabilities. The local display is used for monitoring, status messaging, fault diagnosis, and device configuration. User configurable messages that combine text with live data, can be displayed when user-defined conditions are met. LED Indicators

Multi-Language Display •  English •  Russian •  French •  Chinese

User Programmable Pushbuttons

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L30 Line Differential System

Typical Wiring

A

B

C

Transmission Line Protection

52

N

F8a

F8c VX

VX

F7a

F7c VC

VC

VB

F6a

VA

F6c

F5a

F5c

VA

VB

F4b

F4a

F4c

F3c

IG5

IG1

F3b IC

IC1

IG

F2c

IB

F3a

F2a

F2b

IA1

IB5

IB1

F1c

IA

IC5

F1a

F1b

IA5

OPTIONAL

8L

H5a H5c H6a H6c H5b

H1

V I

H2

H7a H7c H8a H8c H7b

V I

H3

V I

H4

H8b

V

SURGE

U7a U7c U8a U8c U7b

U1

V I

U2

U8b

V

SURGE

I

U3

V I

U4

Multilin

I

L30

I

6K

V

N1a N1b N1c N2a N2b N2c N3a N3b N3c N4a N4b N4c N5a N5b N5c N6a N6b N6c N7a N7b N7c N8a N8b N8c

6D

N1

N2

L3a L3c L4a L4c L3b

N3

N4

L5a L5c L6a L6c L5b

N5

N6

L7a L7c L8a L8c L7b L8b

N7

N8

SURGE

FIBER

RS-232

S1a S1b S1c S2a S2b S2c S3a S3b S3c S4a S4b S4c S5a S5b S5c S6a S6b S6c S7a S7b S7c S8a S8b S8c

S1

DB-9 (front)

1

CRITICAL FAILURE

6C

Rx1 Rx2

INTER-RELAY COMMS. W7A

Tx1 Tx2

FIBER

B1b B1a B2b B3a B3b B5b HI B6b LO B6a B8a B8b

DC

V

U6

L1a L1c L2a L2c L1b

TO REMOTE L30

V

U5

S2

S3

OUTPUT CONTROL POWER

S4

SURGE FILTER

S5

S6 Fibre * Optic

Tx1

10BaseFL

NORMAL

Rx1 Tx2

10BaseFL Rx2

Shielded

S7 COM 1

ALTERNATE

S8

10BaseT

Remote Device

D1a D2a D3a D4b D4a

TC 2

U1a U1b U1c U2a U2b U2c U3a U3b U3c U4a U4b U4c U5a U5b U5c U6a U6b U6c

I

6H

TC 1

H1a H1b H1c H2a H2b H2c H3a H3b H3c H4a H4b H4c

I

6G

UR TXD RXD

SGND

COMPUTER

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

CONNECTOR

8 3 RXD 2 TXD 20 7 SGND 6 4 5 22

CONNECTOR

PERSONAL COMPUTER

RS485 com

Co-axial

BNC

Co-axial

BNC

IRIG-B Input IRIG-B Output

minimum

X W PROVIDED

V

U

T

S

7 6 6 Inputs/ Inputs/ COM outputs outputs * *

R

P

N

M

L

6 6 Inputs/ Inputs/ outputs outputs * *

K

H G

J

D

F

B

6

8

9

1

Inputs/ outputs

CT/VT

CPU

Power supply

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L30-H00-HCL-F8L-H6G-L6D-N6K-S6C-U6H-W7A

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L30 Line Differential System

Ordering L30 - * 00 -H * * -F ** -H ** -L ** -N ** -S ** -U L30 E G H J K L M N P R S Software 00 03 06 07 18 19 Mount / Coating H A V B User Interface C P A NOTE: These selections are B only for horizontal units D G R S K L M N Q T U V Power Supply H * See Below H L L CT/VT DSP 8F 8H 8L 8N IEC 61850 Process Bus 81 Digital I/O XX XX XX XX 4A 4A 4A 4A 4C 4C 4C 4C 4D 4D 4D 4D 4L 4L 4L 4L 67 67 67 67 6C 6C 6C 6C 6D 6D 6D 6D 6E 6E 6E 6E 6F 6F 6F 6F 6K 6K 6K 6K 6L 6L 6L 6L 6M 6M 6M 6M 6N 6N 6N 6N 6P 6P 6P 6P 6R 6R 6R 6R 6S 6S 6S 6S 6T 6T 6T 6T 6U 6U 6U 6U 6V 6V 6V 6V Transducer I/O 5A 5A 5A 5A Select a maximum of 3 5C 5C 5C 5C 5D 5D 5D 5D 5E 5E 5E 5E 5F 5F 5F 5F Inter-Relay Communications select a maximum of 1

Transmission Line Protection

Base Unit CPU

Ethernet Switch option will exclude the Redundant Power Supply option

** -W/X **

RH RL

XX 4A 4C 4D 4L 67 6C 6D 6E 6F 6K 6L 6M 6N 6P 6R 6S 6T 6U 6V 5A 5C 5D 5E 5F 7A 7B 7H 7I 7R 7S 7T 7W 72 73 76 77 2A 2B

7A 7B 7H 7I 7R 7S 7T 7W 72 73 76 77 2A 2B 2S 2T

For Full Sized Horizontal Mount Base Unit RS485 + RS485 (IEC61850 option not available) RS485 + Multi-mode ST 10BaseF RS485 + Mutli-mode ST Redundant 10BaseF RS485 + Multi-mode ST 100BaseFX RS485 + Multi-mode ST Redundant 100BaseFX RS485 + Single-mode SC 100BaseFX RS485 + Single-mode SC Redundant 100BaseFX RS485 + 10/100 BaseT RS485 + Single-mode ST 100BaseFX RS485 + Single-mode ST Redundant 100BaseFX RS485 and 6-port managed Ethernet Switch No Software Options IEC 61850 Phasor Measurement Unit (PMU) IEC61850 + Phasor Measurement Unit (PMU) 3P Autoreclose and Synchrocheck 3P Autoreclose, Synchrocheck, IEC 61850 and Phase Measurement Unit (PMU) Horizontal (19" rack) - Standard Horizontal (19" rack) - Harsh Environment Coating Vertical (3/4 size) - Standard Vertical (3/4 size) - Harsh Environment Coating English English with additional 4 small and 12 large programmable pushbuttons Chinese Chinese with additional 4 small and 12 large programmable pushbuttons French French with additional 4 small and 12 large programmable pushbuttons Russian Russian with additional 4 small and 12 large programmable pushbuttons Enhanced English Front Panel Enhanced English Front Panel with User-Programmable Pushbuttons Enhanced French Front Panel Enhanced French Front Panel with User-Programmable Pushbuttons Enhanced Russian Front Panel Enhanced Russian Front Panel with User-Programmable Pushbuttons Enhanced Chinese Front Panel Enhanced Chinese Front Panel with User-Programmable Pushbuttons 125 / 250 V AC/DC 125/250 V AC/DC with redundant 125/250 V AC/DC 24 - 48 V (DC only) 24 - 48 V (DC only) with redundant 24 - 48 V (DC only) Standard 4CT/4VT Standard 8CT Standard 4CT/4VT with enhanced diagnostics Standard 8CT with enhanced diagnostics 8 Port IEC 61850 Process Bus Module No Module 4 Solid State (No Monitoring) MOSFET Outputs 4 Solid State (Current w/opt Voltage) MOSFET Outputs 16 Digital Inputs with Auto-Burnish 14 Form-A (No Monitoring) Latchable Outputs 8 Form-A (No Monitoring) Outputs 8 Form-C Outputs 16 Digital Inputs 4 Form-C Outputs, 8 Digital Inputs 8 Fast Form-C Outputs 4 Form-C & 4 Fast Form-C Outputs 2 Form-A (Current w/ opt Voltage) & 2 Form-C Outputs, 8 Digital Inputs 2 Form-A (Current w/ opt Voltage) & 4 Form-C Outputs, 4 Digital Inputs 4 Form-A (Current w/ opt Voltage) Outputs, 8 Digital Inputs 6 Form-A (Current w/ opt Voltage) Outputs, 4 Digital Inputs 2 Form-A (No Monitoring) & 2 Form-C Outputs, 8 Digital Inputs 2 Form-A (No Monitoring) & 4 Form-C Outputs, 4 Digital Inputs 4 Form-A (No Monitoring) Outputs, 8 Digital Inputs 6 Form-A (No Monitoring) Outputs, 4 Digital Inputs 2 Form-A (Cur w/ opt Volt) 1 Form-C Output, 2 Latching Outputs, 8 Digital Inputs 4 dcmA Inputs, 4 dcmA Outputs 8 RTD Inputs 4 RTD Inputs, 4 dcmA Outputs 4 dcmA Inputs, 4 RTD Inputs 8 dcmA Inputs 820 nm, multi-mode, LED, 1 Channel 1300 nm, multi-mode, LED, 1 Channel 820 nm, multi-mode, LED, 2 Channels 1300 nm, multi-mode, LED, 2 Channels G.703, 1 Channel G.703, 2 Channels RS422, 1 Channel RS422, 2 Channels 1550 nm, single-mode, LASER, 1 Channel 1550 nm, single-mode, LASER, 2 Channels IEEE C37.94, 820 nm, multimode, LED, 1 Channel IEEE C37.94, 820 nm, multimode, LED, 2 Channel C37.94SM, 1300nm Singlemode, ELED, 1 Channel Single mode C37.94SM, 1300nm Singlemode, ELED, 2 Channel Single mode High Power Supply 6-port managed Ethernet Switch Low Power Supply 6-port managed Ethernet Switch

* Redundant power supply only available in horizontal unit. If redundant chosen, must be same type Maximum 2 per chassis

Visit www.GEMultilin.com/L30 to:

Accessories for the L30   •  UR Applications I Learning CD

TRCD-URA1-C-S-1

  •  View Guideform specifications

  •  Multilink Ethernet Switch

ML2400-F-HI-HI-A2-A2-A6-G1

  •  Download the instruction manual

  •  Viewpoint Engineer

VPE-1

  •  Review applications notes and support documents

  •  Viewpoint Maintenance

VPM-1

  •  Buy a L30 online

  •  Viewpoint Monitoring IEC61850

VP-1-61850

  •  View the UR Family brochure

Ordering Note: To view the latest options available for the L30, or to order the UR Classic Front Panel, please visit our online store for more details.

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080702-v1