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Test bench to enhance safety of energy storage system

Testing equipment for overcurrent protection devices for EV and energy storage systems

Test bench for short-circuit and overcurrent protection devices for high energy storage systemms - ITHPP

Test bench to enhance safety of energy storage system

Testing equipment for overcurrent protection devices for EV and energy storage systems

Test bench for short-circuit and overcurrent protection devices for high energy storage systemms - ITHPP

ITHPP develops customized solutions for customers who need to test the effectiveness of energy storage system protection devices. These solutions consist of a test bench which will produce/simulate an overcurrent (according to customer specifications) of the protection devices in order to evaluate their behaviour and their ability to protect equipment and people. This test bench is designed to assess devices used in DC (direct current) applications, battery energy storage systems (BESS), operating at several hundred volts and thousands of amps : EV (electric vehicles), HEV (hybrid electric vehicles), Smart-grid, photovoltaic installations, etc.

Overcurrent protection devices: a critical component of high-voltage and high current systems

Overcurrent protection devices include circuit breakers, fuses or overcurrent relays. These safety devices are to protect the circuit from dangerous effects of overcurrent by cutting the electrical current in the event of an overload or short circuit. These protective devices must be in accordance with the voltage ratings and power of the equipment for which they are designed; otherwise, they may explode while attempting to stop faulty currents beyond their ratings. Potential damages (explosions, ignitions) can be all the more serious if dealing with a high energy electrical device. For this reason, DC overcurrent protectiion devices for systems with large electric energy storage capacity must meet special performance specifications.

Test bench tailored to high voltage and high current systems

In order to be able to determine the limits of these protective devices, ITHPP has designed a test bench specifically sized to replicate the effects of short-circuit effects in high DC equipment for electrical vehicles and battery energy storage systems (BESS).

The test bench developed by ITHPP operates on several types of current/voltage waveforms. The discharge parameters are adjustable and a human-machine interface system allows precise indications of the discharge parameters according to the settings that have been applied. This results in a significant gain in time during experimental set-up. The bench is equipped with a shielded, non-flammable test chamber and includes a smoke evacuation system to eliminate any risk linked to a faulty system under test. 

ITHPP’s knowledge and experience is available to customers and scalable to meet their specific technical requirements. ITHPP can offer readymade technologies and existing techniques, modifications of those technologies and techniques or completely innovative designs.

Main characteristics

of the test bench:

  • Current amplitude: 0 to 30 kA
  • Voltage: 0 to 1100 V
  • Stocked energy: 250 kJ
  • Stray inductance: < 1 µH