Dold manufactures a variety of equipment that has the capacity to spot, and regulate fault currents in order to avoid failures of electrical units, and guarantee an improved operating efficiency and plant safety. These equipment can be used in either earthed or non-earthed systems, but are different in principles.

The differential-current monitor spots fault currents with the use of the principle of differential-current gauge, and are specifically used to prevent downtimes, and to avoid the risk of fire.

Unplanned interruptions of the operation of machines and systems are a significant cost factor. Insulation errors are a frequent cause for this. In grounded networks (TN networks), DOLD difference current sensors ensure reliable residual current monitoring. Expensive standstill time is avoided by this and, in addition, a possible risk of fire that latently exists by a gradual insulation error is also prevented. The difference current sensors are universally deployable as they can detect both direct and alternating current.

Type : residual current
Applications : measurement
Other characteristics : measuring device