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| Products for Protection, Monitoring, Control, Automation, and Metering |
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SEL-221-16
Distance Relay/Fault Locator
Description:
The SEL-221-16 Distance Relay with fault locator simultaneously provides high-speed and time-delayed protection for transmission, subtransmission, and distribution lines. An 18-bit Relay Word combines mho distance elements, overcurrent elements, directional elements, timers, and data and control bits. You can program the tripping, output, and reclosing logic through Relay Word bit combinations to control the relay outputs.
With its many relay elements, large setting ranges, programmability, and low cost, this relay meets the requirements of a broad spectrum of applications. Flexible yet simple programmability provides access to relay elements (before and after time delays) and logic results.
Analog inputs from current and voltage transformers are delivered to the protective relaying elements and saved for additional features such as metering and fault locating.
Features and Benefits:
- Lowest-cost "Job Done" phase and ground distance relay for time-stepped applications.
- Three zones, overcurrent and directional supervision, backup ground, and reclosing - for less cost than one electromechanical distance zone!
- Separate timers for Zone 2 phase and ground time steps.
- Includes instantaneous/definite time and time curve directional ground overcurrent protection for high-impedance fault detection.
- Programmable single-shot reclosing relay.
- Quick to install and set: only 35 simple settings.
- Free mounting bezels available at time of order for retrofit into GE and Westinghouse cutouts.
- Mask-programmable logic for flexibility.
- Low-level test interface.
- SEL will set relay to user’s application - free!
- Derived from the field-proven SEL-221F Relay.
- -40 to +70°C for indoor and outdoor cabinets.
- Fast Meter protocol for SEL-RD, SEL-DTA2, and SEL-2020.
- Compact, robust package.
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2350 NE Hopkins Court - Pullman, WA 99163 – USA
Phone: +1.509.332.1890 - Fax: +1.509.332.7990
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