.svg?v=180920048278408794651776809924){kind=small}
SEL-700G | SEL Generator Protection and Control Relay
- Regular price
- $3,999.00
- Sale price
- $3,999.00
- Regular price
-
Couldn't load pickup availability
Product Description P/N: SEL-700G
Description
The SEL-700G Generator Protection Relay by Schweitzer Engineering Laboratories is an advanced multifunction relay designed for comprehensive protection, synchronization, and control of synchronous generators. It integrates generator protection, automatic synchronizing, and generator control into a single platform for utility and industrial power systems. The SEL-700G is suitable for small, medium, and large generators requiring high reliability and precise control.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Schweitzer Engineering Laboratories (SEL) |
| Category | Power Protection Relays |
| Part Number | SEL-700G |
| Subcategory | Generator Protection Relays |
| Relay Type | Generator Protection and Control Relay |
| Application | Synchronous Generators and Step-Up Transformers |
| Display | 5-inch Color Touchscreen (800 × 480) |
| Protection Functions | Differential, Volts/Hz, Synchronism Check, Islanding |
| Control Functions | Automatic Generator Control, Autosynchronizer |
| Communication Interfaces | Ethernet and Serial |
| Supported Protocols | IEC 61850, DNP3, Modbus, IEEE C37.118 |
| Operating Temperature | −40°C to +85°C |
| Certifications | UL Class I, Division 2; ATEX |
| Weight | Approx. 10 lb (4.5 kg) |
Information About SEL-700G
The SEL-700G is part of SEL’s generator protection relay series engineered for demanding power generation applications. It features rugged industrial-grade construction with an extended operating temperature range and certifications for hazardous environments. The relay is compatible with synchronous generators and step-up transformers in utility intertie, cogeneration, and industrial power systems. Advanced technologies such as current differential protection, synchrophasor measurements, and flexible communication protocols support reliable protection, monitoring, and system integration.
Key Features:
- Comprehensive Generator Protection: Provides primary and backup protection for synchronous generators, including volts-per-hertz and synchronism-check elements.
- Current Differential Protection: Uses sensitive percentage-restrained and unrestrained differential elements to protect generators and step-up transformers.
- Automatic Synchronizer: Built-in autosynchronizer replaces external synchronizing equipment and simplifies generator commissioning.
- Islanding Protection: Vector shift detection prevents out-of-synchronization reclosing with utility networks.
- Breaker Wear Monitoring: Tracks breaker operations and accumulated contact wear to support predictive maintenance.
- Synchrophasor Measurement: Supports IEEE C37.118-2005 compliant phasor data for system stability monitoring.
- Advanced Communications: Supports Ethernet and serial protocols including IEC 61850, DNP3, Modbus, and PRP for redundant networking.
The SEL-700G delivers the reliability and precision required for generator protection, synchronization, and power system control applications.
Description
The SEL-700G Generator Protection Relay by Schweitzer Engineering Laboratories is an advanced multifunction relay designed for comprehensive protection, synchronization, and control of synchronous generators. It integrates generator protection, automatic synchronizing, and generator control into a single platform for utility and industrial power systems. The SEL-700G is suitable for small, medium, and large generators requiring high reliability and precise control.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Schweitzer Engineering Laboratories (SEL) |
| Category | Power Protection Relays |
| Part Number | SEL-700G |
| Subcategory | Generator Protection Relays |
| Relay Type | Generator Protection and Control Relay |
| Application | Synchronous Generators and Step-Up Transformers |
| Display | 5-inch Color Touchscreen (800 × 480) |
| Protection Functions | Differential, Volts/Hz, Synchronism Check, Islanding |
| Control Functions | Automatic Generator Control, Autosynchronizer |
| Communication Interfaces | Ethernet and Serial |
| Supported Protocols | IEC 61850, DNP3, Modbus, IEEE C37.118 |
| Operating Temperature | −40°C to +85°C |
| Certifications | UL Class I, Division 2; ATEX |
| Weight | Approx. 10 lb (4.5 kg) |
Information About SEL-700G
The SEL-700G is part of SEL’s generator protection relay series engineered for demanding power generation applications. It features rugged industrial-grade construction with an extended operating temperature range and certifications for hazardous environments. The relay is compatible with synchronous generators and step-up transformers in utility intertie, cogeneration, and industrial power systems. Advanced technologies such as current differential protection, synchrophasor measurements, and flexible communication protocols support reliable protection, monitoring, and system integration.
Key Features:
- Comprehensive Generator Protection: Provides primary and backup protection for synchronous generators, including volts-per-hertz and synchronism-check elements.
- Current Differential Protection: Uses sensitive percentage-restrained and unrestrained differential elements to protect generators and step-up transformers.
- Automatic Synchronizer: Built-in autosynchronizer replaces external synchronizing equipment and simplifies generator commissioning.
- Islanding Protection: Vector shift detection prevents out-of-synchronization reclosing with utility networks.
- Breaker Wear Monitoring: Tracks breaker operations and accumulated contact wear to support predictive maintenance.
- Synchrophasor Measurement: Supports IEEE C37.118-2005 compliant phasor data for system stability monitoring.
- Advanced Communications: Supports Ethernet and serial protocols including IEC 61850, DNP3, Modbus, and PRP for redundant networking.
The SEL-700G delivers the reliability and precision required for generator protection, synchronization, and power system control applications.
