Westinghouse Electric Company 290B117A09 Impedance Relay

Description:

The Westinghouse 290B117A09 Impedance Relay is used in industrial power protection and transmission systems for impedance-based fault detection, distance protection, and electrical system monitoring in high-voltage applications. Commonly installed in substations, transmission line protection panels, switchgear assemblies, utility power distribution systems, and industrial electrical protection networks requiring dependable impedance sensing and relay-based fault isolation. Maintenance electricians, protection engineers, and industrial system integrators use this impedance relay for replacement maintenance, relay protection upgrades, retrofit projects, and restoration of legacy Westinghouse power management systems.

Applications:

The Westinghouse 290B117A09 impedance relay is commonly used in transmission line protection systems, utility substations, switchgear lineups, distance protection circuits, generator protection assemblies, transformer protection systems, industrial power distribution networks, and electrical monitoring installations where reliable impedance measurement and fault detection are required for power system protection and operational safety.

Technical Specifications:

• Manufacturer: Westinghouse
• Part Number: 290B117A09
• Product Type: Impedance Relay
• Relay Function: Distance and impedance protection
• Application Type: Power system protection and fault detection
• Electrical Function: Impedance monitoring and protective relay operation
• System Compatibility: Industrial and utility power distribution systems
• Installation Environment: Switchgear, substations, and relay control panels
• Industry Use: Utility transmission and industrial electrical protection
• Compatible Equipment: Transmission lines, substations, and protection systems
• Monitoring Type: Impedance-based fault detection
• Mounting Type: Protective relay panel installation
• Protection Function: Distance and line protection applications
• Service Application: Replacement and retrofit projects
• Equipment Category: Industrial protective relay hardware

Common Replacements:

• ABB Distance Protection Impedance Relay
• GE Impedance Distance Relay
• Siemens Transmission Line Protection Relay