Relay protection device testers typically range from $5,000 to over $50,000 depending on features, phases, and digital capabilities.

Price Overview

The cost of a relay protection tester varies widely based on its capabilities, output phases, and software integration:

• Single-phase portable testers (e.g., TEST-750) are generally $5,000–$10,000, suitable for field testing and basic protective relay verification .
• Multi-phase universal testers (e.g., TEST-630 six-phase kit) with high-precision outputs, multiple binary inputs/outputs, and advanced fault simulation can range from $20,000 to $40,000 .
• High-end microcomputer or digital relay testers (e.g., Doble F6150e, Megger FREJA/SMRT) designed for IEC 61850 digital substations, automated testing, and asset management software integration can exceed $50,000, reflecting their advanced functionality and software support .

Factors Affecting Price

1. Number of Phases and Outputs: More phases and higher current/voltage outputs increase cost. For example, six-phase testers with 6×30A/6×130V outputs are more expensive than single-phase units .
2. Digital and Microprocessor Capabilities: Testers capable of simulating microcomputer relays, differential protection, and complex fault scenarios are priced higher .
3. Software and Automation: Integrated software for automated testing, fault simulation, and IEC 61850 compliance adds to the cost .
4. Portability vs. Laboratory Use: Portable field testers are generally less expensive than full laboratory-grade units with extensive outputs and high-precision amplifiers .
5. Brand and Support: Established brands like Megger, Doble, and GFUVE often command premium prices due to reliability, warranty, and technical support .

Recommendation

For basic field testing, a single-phase or compact multi-phase tester is cost-effective. For substation commissioning, smart grid applications, or IEC 61850 digital relay testing, investing in high-end multi-phase testers with integrated software is recommended despite the higher price. By considering the required testing scope, relay types, and automation needs, you can select a tester that balances performance and cost effectively.