DC immune technology features in new protection system
Multi-way housed earth fault protection system, the FDB2 RCBO unit, shares DC immune technology with its smaller sister unit the FDB11. FDB2 offers 2, 3 and 4 way options as standard with approval by Network Rail for use in DC electrified areas where it provides general purpose earth leakage protection, including overload and short circuit protection, for AC equipment without the problems of nuisance tripping associated with DC induced currents.
Expansion of multi-circuit installations is enabled by the fact the FDB2 units are modular, additionally with internal capacity or by connection of further units, so leading to useful cost and space savings at initial installation and over the lifetime of the project.
Their development over 40 years use in this environment has led to their Network Rail approval for use with general service equipment, e.g. in cafes, adjacent offices etc. to protect against induced DC current.
Each surface mounting enclosure contains solid state electronics for stability and immunity from spurious tripping. Externally RCD test buttons and MCB toggles are fully accessible at the front panel of the enclosure.
Voltage 110/230V earth fault protection is offered at 20, 30 or 100mA overload at 10, 16, 20, 25 and 32A ratings.
Similar articles
More from FDB Electrical Ltd
- Range of Heavy Duty RCCB units to overcome earth leakage 20th November 2018
- General purpose overload/short circuit DC immune protection provided 31st August 2017
- Earth line protection devices enable full electrical protection 16th August 2017
- DC immune technology features in new protection system 16th August 2016
Write a comment
No comments