SAFE APPLICATION OF RCDS WITH VSDS
29 October 2012
The Electricity at Work Regulations make reference to IET Regs (unless the site is specifically covered by another code of practice such as Mines & Quarries).
Regulation 331.1 states: "An assessment shall be made of any characteristic of equipment likely to have harmful effects upon other electrical equipment”.
According to Doepke, installations containing 3 phase VSDs that require RCD protection must use Type B RCCBs having a characteristic compatible with the operational and safety requirements of the installation for people and/or fire protection.
To aid safe installation and commissioning, Doepke offers a free 60 page technical guide, which is available for download at: www.doepke.co.uk/rcd/Designer.html