The purpose of the present invention is to detect an insulation failure in an electrically heated catalyst (EHC).

If one of the two devices detects an insulation fault, it automatically switches to insulation fault location operating mode.

Device for locating faults in underwater telecommunication links by determining the resistance of a cable conductor having a water insulation-related defect.

In some cases, a breakdown of wire insulation can lead to other types of arc fault failures, such as arc tracking.

An internal fault indicator for an electrical device is triggered by a sudden increase in pressure as occurs when an insulation failure creates an electric arc.

If one of the two devices detects an insulation fault, it automatically switches to insulation fault location operating mode.

One speaks of an insulation defect and the risk of electrocution is high for any person who touches the appliance.

The pre-loading device comprises a thermistor (12) arranged on one of the pre-loading lines such that the energy release caused by a short circuit or an insulating fault is completely dissipated in the thermistor (12).

Consequently, whether or nor the electrical insulating oil can cause an insulation failure due to copper sulfide can be judged from the results with satisfactory precision.

The extent of the damage to some equipment, such as motors and generators having an internal insulation fault, also depends on the earthing system.

A winding frame for a winding machine that can eliminate insulation failure caused by the coil wire leakage without detention of initially inserted coil wires near a slot opening part.

For example, in the event of an insulation fault on a motor, the message “Insulation fault compressor 1” could be displayed.

The purpose of the present invention is to detect an insulation failure in an electrically heated catalyst (EHC).

The alternative is that Iran chooses further isolation.

If one of the two devices detects an insulation fault, it automatically switches to insulation fault location operating mode.