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SEL-551 | Schweitzer Engineering Laboratories Overcurrent / Reclosing Relay
- Regular price
- $1,149.00
- Sale price
- $1,149.00
- Regular price
-
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Product Description P/N: SEL-551
Description
The SEL-551 Overcurrent/Reclosing Relay replaces the many relays, control switches, and wiring required in traditional distribution substation protection and control panels. The relay also replaces line recloser control packages at a fraction of the cost.
Technical Specifications
| Brand | Schweitzer Engineering |
| Category | Transmission Distribut. Relays |
| Part Number | SEL-551 |
| Subcategory | Phase/Voltage Loss Relay |
| Outputs | 5 |
| Inputs | 2 |
| Conventional Terminal Blocks Power Supply | 48/125 VDC OR 125 VAC 5 A PHASE |
| Protective Relay Function | OVER CURRENT |
Information About SEL-551
Comprehensive Overcurrent Protection
The SEL-551 provides phase, negative-sequence, residual ground, and neutral overcurrent protection in a compact package, including a complete set of instantaneous, definite-time, and time-overcurrent elements.
acSELerator QuickSet SEL-5030 Software
QuickSet helps speed up the relay application by allowing you to develop relay settings offline, program SELogic control equations, and analyze post-fault event reports.
Protection and Control Logic
SELogic control equations with SELogic variables and timers allow traditional or advanced protection schemes. Programmable local control elements permit front-panel pushbutton control. Programmable text display points provide enhanced local operator information.
Monitoring and Reporting
The SEL-551 features Instantaneous, peak, and demand metering. The latest twenty 15-cycle oscillographic data event reports and the latest 512 Sequential Events Recorder (SER) records are stored in nonvolatile memory.
Communications
The front-panel EIA-232 serial port, the rear-panel EIA-232/EIA-485 serial port, and the ASCII, binary, and Modbus RTU protocols enhance integration capabilities.
Description
The SEL-551 Overcurrent/Reclosing Relay replaces the many relays, control switches, and wiring required in traditional distribution substation protection and control panels. The relay also replaces line recloser control packages at a fraction of the cost.
Technical Specifications
| Brand | Schweitzer Engineering |
| Category | Transmission Distribut. Relays |
| Part Number | SEL-551 |
| Subcategory | Phase/Voltage Loss Relay |
| Outputs | 5 |
| Inputs | 2 |
| Conventional Terminal Blocks Power Supply | 48/125 VDC OR 125 VAC 5 A PHASE |
| Protective Relay Function | OVER CURRENT |
Information About SEL-551
Comprehensive Overcurrent Protection
The SEL-551 provides phase, negative-sequence, residual ground, and neutral overcurrent protection in a compact package, including a complete set of instantaneous, definite-time, and time-overcurrent elements.
acSELerator QuickSet SEL-5030 Software
QuickSet helps speed up the relay application by allowing you to develop relay settings offline, program SELogic control equations, and analyze post-fault event reports.
Protection and Control Logic
SELogic control equations with SELogic variables and timers allow traditional or advanced protection schemes. Programmable local control elements permit front-panel pushbutton control. Programmable text display points provide enhanced local operator information.
Monitoring and Reporting
The SEL-551 features Instantaneous, peak, and demand metering. The latest twenty 15-cycle oscillographic data event reports and the latest 512 Sequential Events Recorder (SER) records are stored in nonvolatile memory.
Communications
The front-panel EIA-232 serial port, the rear-panel EIA-232/EIA-485 serial port, and the ASCII, binary, and Modbus RTU protocols enhance integration capabilities.