Introducing Standex Detect, a New Name in Precision Electronics

Standex Detect is part of the newly rebranded Standex Electronics family. Our focus remains on precision reed switches, sensors, and relays that deliver the right design, at the right time, at the optimal cost. Read our press release to learn more about how this change strengthens our global collaboration and innovation.

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Home E-Car Isolation Measurement

E-Car Isolation Measurement

Electric vehicles require reliable high-voltage isolation to ensure passenger safety and system stability. Standex reed relays provide high isolation, low power consumption, and long life for e-car isolation measurement.

“When properly designed-in, the reed relays features will stand up to the high requirements of modern electric devices very well.”

Internal isolation measurement measurement systems requires a reliable switching component that can handle high voltage isolation. That’s where Reed relays come in.

Hybrid and electric drivetrains in cars, trucks, and two-wheelers are introducing new, previously unknown challenges in the transportation industry. The 12V or 24V board net is now complemented with a 400V or higher battery and power system, which introduce a completely new set of requirements for the car OEMs and system module providers.

Operating with such high voltage and current in a harsh automotive environment drive the need for robust and long-term stable solutions for isolating high voltage levels from other electronic functions but most importantly from the passengers.

This isolation need is present in all functions of the hybrid and electric vehicle, like the high voltage battery, the DC-DC converter, the inverter for driving the electric motor, and also for the charger module connected to the 230V/380V power grid. Therefore, electronic vehicles contain an internal measurement system.

This system checks all electrical parameters like isolation and dielectric strength (isolation resistance between active and electronic components and the frame). To switch or cut such a isolation measurement system to the power system, a high isolation is required.

Reed relays from Standex Detect are more than suitable to fulfill such requirements. Despite its small size, the relay has an isolation resistance in the T Ohm range. Another advantage is low power consumption. Reed relays only need energy during the switching process, which has a positive influence on the overall efficiency of the E-Car. Reed relays are well sealed, making them insensitive to dirty and dusty environments.

The images [below] depict Standex Detect’ ever broadening electric vehicle and alternative energy product solutions, including the SHV & KT relay series and planar transformers.