New Features: –


➤Disconnect control from the Bay Screens application.

➤ Three-position disconnects for increased safety.

➤ A built-in web server that simplifies access to relay data and supports firmware upgrade.

➤ Faster firmware downloads via the Ethernet port.

➤ IEEE 1588-2008 firmware-based Precision Time Protocol (PTP) provides ease of integration.

➤ Ethernet/IP provides ease of integration for industrial automation applications.

➤ Support for IEC 61850 standard operating modes such as Test, Blocked, Test/Blocked, On, and Off for ease of


➤ Visualization of system parameters and synchronization of your generator to your system with built-in        Synchroscope/ Auto Synchronizer applications on the touchscreen display.



Major Features and Benefits: –

The SEL-700G family of protection relays provides unsurpassed protection, integration, and control features in a

flexible, compact, and cost-effective package.

Basic Generator Protection Features (SEL-700G0): Ground differential; sensitive restricted earth fault;

thermal overload; phase, negative-sequence, residual-ground, and neutral-ground overcurrent elements for

backup; residual-ground and neutral-ground time-overcurrent elements; directional residual-ground and neutral ground overcurrent elements; current unbalance element; voltage-controlled, voltage-restrained time-overcurrent element for backup protection; breaker failure protection for three-pole breaker; under- and overvoltage elements; inverse-time over- and undervoltage elements; loss-of-potential element; volts/hertz or overexcitation protection; directional power elements; loss-of-field; over- and underfrequency protection elements; off frequency time accumulators; rate-of-change-of- frequency elements; vector shift elements for islanding detection; inadvertent energization protection; RTD protection (requires internal or external SEL-2600 RTD option); field ground using an SEL-2664 Field Ground Module.

Optional Generator Protection Features (SEL-700G0+, SEL-700G1, SEL-700G1+): Generator synchronism check

elements; synchronism-check under- and overvoltage elements; inverse-time over- and undervoltage elements; auto synchronism; synchroscope; backup compensator distance elements; out-of-step elements; vector

shift elements for islanding detection; 100% stator ground protection elements; and dual-slope current differential protection with harmonic blocking and restraint elements to provide sensitive and secure protection. The high-security mode provides additional security against CT saturation during external events including external transformer energization, external faults, etc.

Intertie Protection Features (SEL-700GT): Phase, negative-sequence, and residual-ground overcurrent

elements for overcurrent, time-overcurrent, and directional overcurrent protection; breaker failure protection for

three-pole breaker; under- and overvoltage elements; inverse-time over- and undervoltage elements; loss-of potential element; directional power elements; over- and underfrequency protection elements; rate-of-change-of frequency elements; vector shift elements for islanding detection; tie synchronism-check elements; synchroscope; and RTD protection (requires internal or external SEL-2600 RTD option).

Optional Intertie Protection Features (SEL-700GT+). Addition of basic generator protection features, as

shown above for the SEL-700G0, to create intertie and generator protection. The relay also includes generator

synchronism-check, synchroscope, and auto synchronism functions.

Wind Generator Protection Features (SEL-700GW). The SEL-700GW is configured with two sets of phase,

negative-sequence, and residual-ground overcurrent elements, and phase, negative-sequence, and residual-ground time-overcurrent elements to provide dual-feeder protection in a multiple wind generator network application. The relay also includes three-pole breaker failure protection for two breakers.

Generator Monitoring. Monitor ambient and generator winding temperature using optional analog inputs or

RTDs and protect the generator from thermal damage. Use off-frequency time accumulators and protect steam

turbine blades from fatigue failures because of off-frequency vibration.

Operator Controls. Eight programmable front-panel pushbuttons each with two programmable tricolor LEDs

allow for a wide variety of uses, including easy trip and close control and status indications for a breaker. Implement local and remote operator control schemes using 32 local and 32 remote control bits.

Integrated Web Server. Log in to the built-in web server to view metering and monitoring data and to download events, Sequential Events Recorder (SER), etc. Use the web server to view relay settings and to perform relay firmware upgrades.

Relay and Logic Settings Software. ACSELERATOR Quickset® SEL-5030 Software reduces engineering costs

for relay settings and logic programming. The tools in Quickset make it easy to develop SELOGIC® control equations. Use the built-in phasor display to verify proper CT polarity and phasing. Use the synchroscope to watch

the auto synchronism controls.

Metering and Reporting. Built-in metering functions eliminate separately mounted metering devices. Analyze

Sequential Events Recorder (SER) reports and oscillography event reports for rapid commissioning, testing, and

post-fault diagnostics. Unsolicited SER protocol allows station-wide collection of binary SER messages.

Front-Panel HMI. Navigate the relay HMI using a 2 x 16-character LCD or optional 5-inch, color, 800 x 480-

pixel touchscreen display.

Additional Standard Features. Includes Modbus® RTU, Event Messenger support, MIRRORED BITS® communications, built-in web server and communications, load profile report, 128 remote analogs, support for 12 external RTDs (SEL-2600 module), IRIG-B input, advanced SELOGIC, configurable labels, IEEE C37.118-compliant synchro phasor protocol, and fiber-optic serial port.

Optional Features. Select from a wide offering of optional features, including SNTP (Simple Network Time

Protocol), IEEE 1588-2008 firmware-based PTP, IEC 61850 Edition 2, Modbus® TCP/IP, EtherNet/IP, DNP3 LAN/WAN, DNP3 serial, IEC 60870-5-103, PRP with dual Ethernet ports, 10 internal RTDs, voltage/current

inputs, additional EIA-232 or EIA-485 communications ports, and single or dual, copper wire or fiber-optic

Ethernet ports. Several analog and digital I/O options are available. These include 4 AI/4 AO, 4 DI/4 DO, 8 DI,

8 DO, 3 DI/4 DO/1 AO, 4 DI/3 DO, and 14 DI. Conformal coating for chemically harsh and/or high-moisture

environments is available as an option.

Language Support. Choose English or Spanish for your serial ports, including the front-panel serial port. The

standard relay front-panel overlay is in English; a Spanish overlay is available as an ordering option.

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