Professional-grade Relay Protection Tester

Professional-grade relay protection testers are advanced devices designed to accurately simulate electrical faults and verify the performance of protective relays in power systems.

Overview

Relay protection testers are essential for ensuring the accuracy, reliability, and operational readiness of protection relays in electrical networks. They are used in commissioning, routine maintenance, and troubleshooting of substations, power plants, and industrial installations. These testers can simulate voltage, current, frequency, and complex fault conditions to evaluate relay responses under real-world scenarios.

Key Features

Phase Outputs: Available in single-phase, three-phase, and six-phase configurations, supporting both traditional and digital relay testing, including transformer differential and multi-function relay tests.

High-

Fidelity Amplifiers: Linear or modular amplifiers ensure interference-free, accurate waveform outputs across all current levels, even under maximum load. Voltage and Current Ranges: AC outputs typically range from 0. 5–40A per phase and 0–240V line voltage, with DC outputs adjustable up to 220V and 10A per phase.

Frequency and Harmonics: Capable of generating frequencies from 20–1000Hz and harmonics from 1–20 times, allowing precise simulation of real-world conditions. Software Automation: Windows-based platforms provide one-click fault simulation, automated test sequences, calibration, data storage, and instant report generation in Excel or PDF formats. Digital Substation Compatibility: Advanced testers support IEC 61850 protocols, including GOOSE messaging and Sampled Value outputs, enabling testing of modern digital substations.

Synchronization: GPS/IRIG-B dual-ended synchronization allows high-precision end-to-end line differential protection testing across long distances.

Industrial-

Grade Hardware: Rugged, portable designs with shock-absorption, thermal overload protection, and built-in industrial PCs ensure reliable field operation.

Applications

Substation and Power Plant Testing: Verifying relay operation for overcurrent, distance, differential, and multi-function protection schemes. Equipment Manufacturer Testing: Ensuring protective devices meet performance standards before deployment. Field Maintenance: Portable testers allow on-site calibration and fault simulation without disturbing existing wiring.

Digital Substation Commissioning: Testing IEDs, GOOSE messaging, and Sampled Value signals in IEC 61850-compliant systems.

Leading Manufacturers

Run Test: Offers three-phase and six-phase secondary injection testers with high-precision amplifiers and automated software platforms. HVTestPro: Provides versatile 6-phase testers with modular amplifiers, DC outputs, and advanced software for automated relay testing.

KINGSIN

E: Specializes in portable testers for both traditional and digital substations, including CT/PT analyzers and high-capacity amplifiers.

SISC

O: Offers compact, high-automation relay testers with multi-phase outputs and real-time data storage for field and laboratory use. Professional-grade relay protection testers combine precision, automation, and rugged portability, making them indispensable for modern power system testing and maintenance. They ensure that protective relays operate correctly under all conditions, safeguarding electrical infrastructure and minimizing downtime.