Water detector standard 1

[KllrWolf]

Is there a standard (IEEE, UL, CE, etc.) that covers water detectors in an oil filled motor, oil bath, or even just genericaly?

We have been using the stripped ends of two wires as our detection probes for the few motors we make that are not filled with water on purpose.

 

[KiwiMace]

Liebert tests their leak detectors to UL916, which appears to be at the generic end of the scale.

Energy Management Equipment
UL 916
1 Scope

1.1 These requirements cover energy management equipment and associated sensing devices rated 600 volts or less and intended for installation in accordance with the National Electrical Code, NFPA 70.

1.2 This equipment energizes or de-energizes electrical loads to achieve a desired use of electrical power. The equipment is intended to control electrical loads by responding to sensors or transducers monitoring power consumption, by sequencing, by cycling the loads through the use of preprogrammed data logic circuits, or any combination thereof. Devices responding to signals from a utility company may receive the signals over the power lines or as radio signals.

1.3 These requirements also cover equipment intended for connection only to a low-voltage circuit of limited power supplied by a Class 2 transformer.

1.4 These requirements do not cover switching devices operated by a mechanical or electromechanical clock mechanism to energize or de-energize loads. These requirements do cover electronic clock operated energy management equipment.

 

[KllrWolf]

Thanks for that information. It appears that we will have to find a different way to convince the customer that it is not the probe, but their actual sensing of the probe that controls the sensitivity.

 

[KiwiMace]

The probes are usually gold plated on the point sensors.

 

[KllrWolf]

I figured the gold plating was for corrosion protection, especially for probes exposed to air and water. I know the bare wire method we have used has shown no signs of corrosion in motors in service for over 10 years, but our motors are full of mineral oil that help protect them.

I would like to know if the gold plating provides any other benifits other than corrosion control.