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SEL-587Z

High-Impedance Differential Relay

The SEL-587Z High-Impedance Differential Relay is an economical and flexible relay that combines time-proven, high-impedance analog technology with the advantages of microprocessor technology. Use event reports and the Sequential Events Recorder (SER) for quick postevent analysis.

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$5,170

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High-Impedance Bus Differential Protection—Provide high-speed, economical bus protection with a single three-phase differential bus zone. Two voltage-based setting levels are available. A high-value setting can be used for a standard trip, while a low-value setting can be used as an open-circuited CT alarm. The differential element’s internal 2000 ohm resistor allows high security to be maintained during heavy through faults or during CT saturation issues.

Simple Implementation—Apply simple settings and dedicated same-ratio CTs to create a cost-effective and easily expandable bus protection solution.

Overcurrent Protection—Provide backup overcurrent protection with the separate phase, neutral, and negative-sequence overcurrent elements, including instantaneous, definite-time, and inverse-time overcurrent elements.

Breaker Failure/Fault-Cleared Detection—Detect breaker failure and bus fault status with an overcurrent element in series with the high-impedance element.

Details

High-Impedance Differential Protection
Provide high-speed, economical bus protection with a three-phase, high-impedance differential bus zone. High-impedance differential protection offers immunity against relay misoperation resulting from CT saturation. The SEL-587Z Relay uses internal 2000-ohm resistors to provide security against the effects of CT saturation for through faults. Internally mounted metal-oxide varistors (MOVs) are connected in parallel with the high-impedance element to clamp secondary peak voltage to less than 2 kV. Make use of simple settings and dedicated same-ratio CTs to create a cost-effective and easily expandable bus protection solution.

Overcurrent Protection
The SEL-587Z features separate phase, neutral, and negative-sequence overcurrent elements, including instantaneous, definite-time, and inverse time-overcurrent elements, for backup overcurrent protection.

Breaker Failure/Fault-Cleared Detection
Detect breaker failure and bus fault status by using an overcurrent element series with the high-impedance element.

Protection and Control Logic
SELogic control equations with SELogic variables and timers facilitate traditional or advanced protection schemes.

Monitoring and Reporting
Oscillographic event reports (up to ten 15-cycle reports) and metering functions eliminate or reduce external recorder and metering requirements. The SER stores the latest 512 entries in nonvolatile memory.

Serial Data Communications
Use the front and rear serial ports for communicating with ASCII terminals, a local human-machine interface (HMI), SCADA, or distributed control systems (DCSs). As an ordering option, select an EIA-232 or EIA-485 rear serial port. Through settings, select and configure the ports for SEL ASCII and interleaved SEL Fast Binary messages or for the Modbus RTU outstation protocol.

  • Panel-mount or rack-mount hardware package.
  • EIA-232 front and EIA-232 or EIA-485 rear-mounted serial communications ports. Either rear-mounted port includes a demodulated IRIG-B time-code input.
  • Energy-clamping metal oxide varistors (MOVs)
    • 1 MOV—2600 J, 2100 V
    • 2 MOVs—5200 J, 2100 V
    • 4 MOVs—8400 J, 1500 V
  • Accessory lockout relay.
  • Conformal Coating: Protect equipment from harsh environments and airborne contaminants, such as hydrogen sulfide, chlorine, salt, and moisture.

Minimum Software Version

Latest Firmware Versions

There are no firmware versions available for this product.

Product Revision Firmware ID Date Available Serial Number
SEL-587Z R200 SEL-587Z-R200-V0-Z001001-D20150812 9/23/16 ~1162660001
Please contact Application Engineer for firmware related to your hardware platform.  The current revision does not apply to all hardware.
SEL-587Z R102 SEL-587Z-R102-V0-Z001001-D20020903 3/5/09 2009064001
Please contact Application Engineer for firmware related to your hardware platform.  The current revision does not apply to all hardware.

The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.

Minimum Software Version

501 551 551C 587Z - Software Tab

Configuration

acSELerator QuickSet SEL-5030 Software

QuickSet is a tool for engineers and technicians to quickly and easily configure, commission, and manage power system devices. QuickSet includes a Graphical Logic Editor and a device template tool to reduce configuration time and streamline deployment.

Learn more and download on the SEL-5030 software page.

Visualization & Analysis

SEL-5601-2 synchroWAVe Event Software

synchroWAVe Event helps engineers diagnose a protective relay’s behavior during a power system fault. It is a powerful and easy-to-use solution for displaying and analyzing SEL relay event reports and COMTRADE files.

Learn more and download on the SEL-5601-2 software page.

Product Certifications

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