Capacitive Coupler
The IPEC Capacitive Coupler sensor detects TEVs as they pass over the cladding of the high voltage plant. The very fast output signals are recorded by the IPEC ASM Monitor. The sensor is enclosed in a durable silicon body for added protection. The body has powerful magnets embedded within it for mechanical coupling to steel enclosures.
Transient Earth Voltage
Partial discharge activity inside metal clad high voltage plant induces small voltage impulses (called Transient Earth Voltages) on the surface of the metal cladding. TEV's travel around the cladding surface to the outside of the switchgear panel where they can be picked up externally using capacitively coupled transducers (see picture above).
Embedded Sensing
Depending on the switchgear type, more accurate signals can be obtained by embedding the sensors inside the switchgear to be monitored.
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