A Patent on the Back

Helwig’s “BPK-Probe” shaft voltage detecting device no longer pending

In the video below, absorb everything you can except the words “patent pending” which no longer apply.

Helwig Carbon’s shaft voltage detection device, otherwise known as the “BPK-Probe”, received an official United States patent this month, EA has learned via e-mail from Helwig. The device is an instrument designed to measure common mode voltage on a motor shaft and determine the risk of discharge through the motor bearings. It also has the capability to switch in Helwig’s bearing protection solution. This feature allows the user to measure the performance of the grounding device and the risk of further damage to the motor bearings once installed.

The BPK-Probe comes as part of a complete kit for testing motor shafts—or other devices where damaging discharges may be present. An optional tablet-style oscilloscope is available to record and analyze measured results.

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