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High Voltage Relay Protection Testing Bench

A high voltage relay protection testing bench is specialized equipment used to simulate electrical faults and verify the performance of protective relays in power systems.Purpose and Importance

High voltage relay protection testing benches are designed to evaluate and calibrate protective relays that safeguard electrical grids, substations, and industrial facilities. They simulate fault conditions such as overcurrent, short circuits, and voltage anomalies to ensure relays trip correctly and maintain grid stability, preventing equipment damage and blackouts . Testing is crucial for commissioning, maintenance, fault analysis, and compliance with standards like IEC 61850, IEEE, and ISO .

How It Works

The bench generates controlled AC/DC currents and voltages using DSP-based amplifiers and power modules. Users can define fault scenarios through dedicated software, which then injects precise signals into the relay under test. The system monitors relay responses, including tripping time, signal accuracy, and selectivity, often using oscilloscopes or digital interfaces . Advanced models include GPS synchronization, automated test sequences, and data logging for comprehensive performance evaluation .

Key Features
  • Multi-phase outputs for three-phase AC/DC testing, typically up to 200A and 300V .
  • Modular design with swappable voltage and current modules, built-in CT/PT simulators, and compatibility with relays from ABB, Siemens, and other manufacturers .
  • Automation and software control to reduce human error and improve testing efficiency .
  • Portability and ruggedness for field use, including Ethernet connectivity, touchscreens, and remote-control functionality .
  • Transient generation and binary I/O for simulating complex operational scenarios .
Applications

High voltage relay protection testing benches are used in:

  • Substations and power plants for relay commissioning and maintenance.
  • Industrial facilities to ensure protection systems operate correctly under fault conditions.
  • Utilities and OEMs for compliance testing and quality assurance of protective devices .
Leading Manufacturers

Companies like HV Hipot Electric and Kvtester provide high-precision, customizable relay test benches with advanced automation, modularity, and compliance with international standards . These solutions cater to both bench-top and portable field testing, supporting a wide range of relay types from conventional electromagnetic to digital microprocessor-based relays . In summary, a high voltage relay protection testing bench is an essential tool for ensuring the reliability, safety, and compliance of electrical protection systems, offering precise fault simulation, automated testing, and versatile features for modern power grids.

High Voltage Relay Protection Testing Bench

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Capable of performing electrical tests on tools and equipment up to 220 kV, featuring intelligent high- and low-voltage isolation

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High voltage relay protection testing equipment generates controlled electrical conditions to replicate faults in power

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SCR Elektroniks presents demonstration units for different types of relays such as under protection/over protection relay,

Protective Relay Tester

Select from a number of protective relay tester models that feature varying power levels

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Find your protection relay testing device easily amongst the 66 products from the leading brands

High-voltage test bench

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