Dold differential-current relays and Dold insulation monitors are used for early detection of insulation faults in applications where unscheduled downtimes of machinery would have serious consequences. They are used in earthed systems for reasons of efficiency and protection against fire and accidents, but they are required by law in non-earthed systems for the same reasons.
Dold insulation monitors and Dold differential current relays differ in their function principle in earthed and non-earthed systems:
- In earthed systems (TN systems) Dold differential-current relays detect fault current with the principle of differential-current measurement and are mainly used to avoid cost-intensive downtime and to prevent the risk of fire.
- In non-earthed systems (IT systems), the insulation resistance to earth of the system is measured. Such systems are secured by Dold insulation monitors. The use of them in IT systems is required by law by the norm “Safety of Machinery” DIN EN 60204-1 or DIN VDE 0100-410. Thanks to deliberately kept simple functionality of Dold insulation monitors, customers benefit from a considerable cost advantage combined with the high quality standard accustomed from Dold.
Dold Insulation Moniors and Dold Differential Current Relays Part Numbers
European Electrical Equipment is a premier supplier of Dold replacement parts. Below is a partial list of Dold part numbers we supply:
- Dold IL5880
- Dold IL5881
- Dold IL5882
- Dold IP5880
- Dold SL5880
- Dold SL5881
- Dold SL5882
- Dold SP5880
- Dold MK5880N
- Dold IN5880/710
- Dold IN5880/711
- Dold IP5880/712
- Dold IP5883
- Dold IR9112/710
- Dold IS9112/711
- Dold IS9112/712
- Dold BD5877/241
- Dold BO5877/011
- Dold AN5890
- Dold AN5873
- Dold RP5888
- Dold AG5870
- Dold AG5876
- Dold AN5871
- Dold AN5872
- Dold AN5892
- Dold EH5861
- Dold EH5878
- Dold AI895.07
- Dold AI896
- Dold AI897
More Information on Dold Insulation Moniors and Dold Differential Current Relays
For specific information and pricing on Dold Insulation Moniors and Dold Differential Current Relays, please use our contact form or contact us via phone (908-234-2333).
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