Ensuring electrical Safety with Plant Floor Test Cells
Safety via Voltage Presence Detection
High-voltage components, (i.e., batteries, power electronics, heaters, and electric propulsion axles,) must be checked for their function and safety before they are installed in a vehicle. To ensure that this is done in a safe manner, the test cells used in the manufacturing process are often guarded by safety fencing, so that people on the plant floor are not endangered.
Ensuring electrical Safety with Plant Floor Test Cells
Sector
Reliable Confirmation that high Voltage is no longer present
Application
Switch-based output once a user-defined voltage threshold has been reached
Measured Parameter/Signal converted/isolated
Key Requirements
- Ensuring workplace safety in a high-voltage environment
- Accurate sensing of an unsafe voltage threshold
- Confirmation of system operation
Application Description
The cells are to be secured in accordance with EN 50191 (or similar standards and safety regulations, based on the country of installation).
Requirements of Application
Because the component qualification process typically involves high voltage testing, an important prerequisite for establishing safety of personnel being able to re-enter test cells is the reliable confirmation that high voltage is no longer present.
Solution - Product Highlight
The Knick P52000VPD is a rugged sensor which provides a solid-state switch-based output once a user-defined voltage threshold has been reached. Voltage presence detection can be achieved up to +/- 4200 V AC/DC, with continuous isolation provided at an even higher level, of 4800 V AC/DC. An available diagnostic relay output confirms the indication of “power good” status. The device housing with a hardened carbon fiber cover ensures finger protection with the high voltage input terminals.