AES El Salvador and Representaciones Eléctricas S.A. de C.V. are key local providers of relay protection testing equipment and services in El Salvador.

Local Providers

AES El Salvador offers specialized services in calibration, verification, and inspection of electrical measurement and control equipment. Their infrastructure and skilled personnel ensure precise and reliable testing results, supporting industrial and productive sectors in maintaining accurate and safe electrical systems (AES El Salvador) . Representaciones Eléctricas S.A. de C.V. supplies, installs, tests, commissions, and maintains protection relays for transformers, busbars, lines, and generators. They utilize advanced testing equipment such as the Omicron CMC256 Plus, which provides GPS-synchronized timing and high-precision measurements for pick-up values and trip times, ensuring proper operation of protection schemes (Repelec) .

International Brands Available Locally

Several international manufacturers provide relay protection testers that may be procured or serviced in El Salvador:

• OMICRON: Offers compact, modular, and ultra-portable relay test sets for primary and secondary injection, supporting both electromechanical and digital relays, including IEC 61850-compliant systems. Their LLX1 accessory allows testing of relays with sensor inputs like Rogowski coils or low-power current transformers (OMICRON) .
• Megger: Provides the FREJA and SMRT relay test sets, capable of manual and automated testing, including IEC 61850 network access. Their software tools, such as the Megger GOOSE Configurator and Sampled Values Analyzer, enhance testing efficiency and cybersecurity (Megger) .
• DirectIndustry-listed devices: Brands like MEGGER, OMICRON, and WUHV offer microcomputer relay protection testers, primary current injectors, and multi-phase test kits suitable for conventional and digital relays, supporting closed-loop testing and GOOSE signal simulation (DirectIndustry) .

Summary

For El Salvador, AES El Salvador and Representaciones Eléctricas S.A. de C.V. are the primary local sources for relay protection testing services and equipment. International brands such as OMICRON and Megger are also accessible through distributors or service providers, offering advanced testing solutions for modern protection relays, including IEC 61850-compliant systems. These options cover a wide range of testing needs, from basic manual tests to fully automated, multi-phase, and digital relay testing.