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High Voltage Isolation Relays for Use in Isolation Applications

Protecting people and sensitive circuitry

Whether we are talking about protecting personal safety or sensitive circuitry, Standex Electronics offers high-voltage relays that deliver high-isolation characteristics, that can also reliably operate over a wide temperature range and provides an economical way to carry out billions of switching operations. Our high isolation reed relay series integrates a large amount of smart technology packed into a small footprint. They deliver high-voltage isolation protection in ATE (Automated Test Equipment), Medical Equipment, Alternative Energy, and Electric Vehicles & Battery Management systems, and various other markets.

For instance, our KT Reed Relay series has an insulation resistance at >= 10E+13Ω, measures just 8mm x 10mm x 30mm, and is available in a through-hole (THT) or surface mount design (SMD).  Furthermore, this high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, and isolation voltage to 7kVDC.

Additional features include an innovative design with no internal solder joints and the ability to meet minimum creepage distance requirements as outlined by the IEC standard. A typical alternative energy application includes measuring isolation resistance across several components within a solar powered system prior to connecting to the grid, preventing injury or further current leakages.

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High Isolation Applications
  • ATE/Test & Measurement – Insulation Testers, DMM & Oscilloscopes, Semiconductor Testers, Multiplexer/Matrix Switches, Transient Voltage Suppressors (TVS)
  • Alternative Energy – Solar Inverters, Power Distribution
  • Medical Equipment – Surgical Generators, Automated External Defibrillators, Isolation Monitoring, Ultrasound Probe Testers
  • Electric Vehicles & Battery Management – Battery Isolation Systems, Power Inverters, Battery Conditioning

The SHV reed relay series is a single in-line and high voltage relay or instrumentation grade reed relay supplied in a molded housing, capable of switching up to 1kVDC and can dielectrically hold off up to 4kVDC across the contacts as well as between contacts and coil. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series. It is even smaller than the former potted SIL-HV Reed Relay.

The SHV reed relay series was designed primarily for use in automatic test systems, testing high power MOS-FETs. These rugged semiconductors have a very high initial peak current capability. Having a reed relay that can carry high current pulses for hundreds of millions of operations is a critical requirement. The SHV relay series can carry up to 5 amps for up to 50milli-second at a consistent repetition rate. The relays have standard internal magnetic shields for close stacking matrices.

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One comment on “High Voltage Isolation Relays for Use in Isolation Applications
  1. vihan says:

    This is very innovative and informative also useful Article. Thank you for sharing this Article. Thanks

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