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SEL-700GT

SEL-700GT Intertie Protection Relay

Ordering Information

Budgetary Price:
$2,500

Online Product Configuration

SEL-700GT Intertie Protection Relay

SELect I/O Cards

The SEL-700GT provides a complete intertie protection solution for distributed generation. Optional synchronous generator protection and synchronization provide complete generator and intertie protection in one compact and economical package.

Easily upgrade protection without cutting or drilling existing cutouts with a small form factor and multiple mounting adapters. Quickly integrate into serial- or Ethernet-based communications with Modbus®, DNP3, IEC 61850, Mirrored Bits® communications, DeviceNet™, and other protocols.

  • Complete Intertie and Generator Protection

    The SEL-700GT provides an IEEE 1547-compliant intertie protection solution for distributed generation. Optional synchronous generator protection and automatic synchronization provide a complete generator and intertie protection system in one compact and economical package.

  • Intertie Synchronism Check

    The SEL-700GT includes the tie synchronism check function, which provides the closing window for the tie breaker when connecting to the utility grid.

  • Distributed Generation and Utility Interconnection Protection

    The SEL-700GT provides voltage-based protection for undervoltage, overvoltage, underfrequency, and overfrequency. Current-based protection functions include directional overcurrent, instantaneous overcurrent, and time-overcurrent.

  • Optional Generator Protection

    Numerous current, voltage, frequency, distance, and power elements provide comprehensive protection for large, medium, and small generators.

  • Autosynchronizer

    The optional, built-in automatic synchronizer function eliminates the need for expensive external synchronizer equipment. Frequency, voltage, and phase control of the generator are automatically synchronized and connected to the power system.

  • Easy Communications

    Choose from single or dual ports, copper or fiber-optic Ethernet or serial communications, and several protocols, including Mirrored Bits communications and IEC 61850. Pick multiple Modbus TCP or Modbus serial sessions for custom configuration of your application. Use DNP3 serial or DNP3 LAN/WAN protocol.

  • Directional Power Elements 

    Sensitive power elements protect against reverse power, overload conditions, or low forward power.

  • Metering and Reporting 

    View generator autosynchronizer, Sequential Events Recorder (SER), and 180-cycle oscillographic event reports to analyze generator start up, shut down, or system faults. Measure electrical, thermal, and generator run-time quantities.

  • Synchrophasor Data
    Apply SEL synchrophasors (IEEE C37.118) to turn state estimation into state measurement and to provide early warning of potential system instability. The SEL-700GT phasor measurement accuracy meets the IEEE C37.118-2005 Level 1 requirement.
     
  • Use voltage, current, power, and directional elements to implement an IEEE 1547-compliant, distributed-interconnected generation system.
  • Detect power flow problems, and quickly disconnect the utility supply from the load and the distributed resource.
  • Use the SEL-700GT (with optional generator protection) to provide a one-device solution for generator protection, intertie protection, and automatic synchronization.
  • 700G SynchroscopeReplace external generator control and synchronizer relays with the built-in automatic synchronizer function. Monitor the generator synchronization process using generator start reports and the PC-based synchroscope.
  • Use the high-accuracy, six-level frequency elements to trip for under- and overfrequency operation, while accumulating off-nominal frequency time in up to six frequency bands.
  • Monitor and record generator utilization with internal meters that record stopped time, run time, full load hours, average power, and average power factor.
  • Record accumulated breaker contact wear with the breaker monitor function, which uses manufacturer specifications for defining breaker operation limits. The internal monitor tracks the total number of close/open operations and integrates interrupted current per phase. Set an alarm to alert operators when measured and accumulated quantities approach maintenance thresholds. This information facilitates proactive breaker maintenance and replacement without underutilizing resources.
  • Monitor field ground resistance with state-of-the-art voltage injection. Protect generators from damage by responding to low field resistance warnings.
  • Use acSELerator QuickSet® SEL-5030 or SEL-5010 Relay Assistant Software to manage your relay settings.

  • Flexible I/O for Local Control and System Applications
    The base system includes three digital outputs and two digital inputs. There are three card slots for optional SELect I/O cards, including the following:

    • Four digital inputs (DI) and four digital outputs (DO)
    • Four digital inputs (DI) and four fast, high-current interrupting digital outputs (DO)
    • Four digital outputs (DO), three digital inputs (DI), and one analog output (AO)
    • Four digital inputs (DI) and three digital outputs (DO) (2 Form C and 1 Form B)
    • Four analog inputs (AI) and four analog outputs (AO)
    • Eight analog inputs (AI) for dc process values
    • Eight digital inputs (DI)
    • Eight digital outputs (DO)
    • Ten RTD inputs
    • Three ac voltage inputs and three ac current inputs
       

  • Integrated Communications 

    The SEL-700GT offers many communications media and protocol options. Versatile communications options provide fast integration into both new and existing applications.

    • Communications Media
      • Ethernet 10/100BASE-T
      • Ethernet 100BASE-FX
      • Single or dual Ethernet ports
      • EIA-232 serial
      • EIA-485 serial
       
    • Communications Protocols
      • IEC 61850
      • DNP3 LAN/WAN
      • DNP3 serial
      • Modbus TCP
      • DeviceNet
      • Telnet
      • FTP
      • IEEE C37.118 synchrophasors
       

  • Retrofit Replacement Kits 

    Replace existing feeder protection with the SEL-700GT and the applicable mounting kits. These kits provide the parts needed to easily replace many older feeder relays with the SEL-700GT.
     

    Find other mounting options with the SEL Mounting SELector.
     

  • Conformal Coating 

    Protect equipment from harsh environments and airborne contaminants such as hydrogen sulfide, chlorine, salt, and moisture.

    Learn more about conformal coating.
     

Projection Mounting Collars Available in 45 and 90 mm
ProjMtCollars_Group.jpg

Find other mounting options with the SEL Mounting SELector. 

 

  • SEL provides options to help you efficiently and safely commission and test these relays.

  • SEL-4391 Data Courier 

    Streamline commissioning by using the SEL-4391 Data Courier®  to send and retrieve settings, gather event reports, and install enhancements.
  • SEL accessories simplify operation and enhance the flexibility of SEL products.
  • Add independent breaker control to any relay. The SEL-9510 Control Switch Module easily installs in panel or rack locations for independent local control and status indications.
     

 SEL University Training

COM 403: IEC 61850 Technology
IEC 61850 was created to be an internationally standardized method of communication and integration and to support systems built from multivendor intelligent electronic devices (IEDs) that are networked to perform protection, monitoring, automation, metering, and control functions. In this communications fundamentals course, you will learn about the components and protocols that make up the IEC 61850 standard. During this one-day course, you will walk through the IEC 61850 planning process and identify key network considerations. This course also provides a concise introduction to the concepts that will be applied in SYS 403.
SYS 403: Practical IEC 61850 Application
The international standard IEC 61850 was designed to standardize communications and integration methods and to support systems built from multivendor intelligent electronic devices (IEDs) that are networked to perform protection, monitoring, automation, metering, and control functions. SYS 403 is designed to be interactive and activity based. During this course, you will configure and implement a realistic IEC 61850 communications and automation scheme. Each unit of this course will guide you, step-by-step, through configuring this comprehensive communications and automation scheme.

Access drawings via the Online Product Configuration link in the Ordering Information box at the top right of this page (below the product photo).

From the Product Configuration page, configure your product or enter your part number via the Universal Part Number Reverse Lookup. Then download custom .dwg or .pdf files specific to your product.

You may also go directly to the Product Configuration page to make a product selection.

To view the latest firmware version currently shipping with this product, go to the Latest Firmware Version page.

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Schweitzer Engineering Laboratories, Inc.

2350 NE Hopkins Court
Pullman, WA 99163 - USA
Phone: +1.509.332.1890
Fax: +1.509.332.7990
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