All Falcon Electric Charge Point hardware contains a proprietary technology that allows direct connection to a PME supply.
This is achieved by continuously monitoring the status of L, N and E. In the event that these fall outside of “normal” conditions, e.g. If the voltage between N and L falls outside a value that could be the result of a failing Neutral / Earth conductor the charge cycle is ended. As a function of this detection system the Electron EVW hardware incorporates relays that disconnect the vehicle ensuring touch voltage is not dangerous. This “safe” state is also true when the EV is not charging.
The Electron EVW hardware using this technology is being used to satisfy this requirement should be noted in the departures section of the installation certificate issued by the installer, example statement below:
“This Electron EVW Charge Point includes a proprietary system that isolates PEN if a fault is detected, No rod is required as it provides at least the level of protection as BS7671:2018 722.411.4.1: (iii)”.
6mA DC Leakage Protection
All Electron hardware contains a dedicated sensor that identifies any DC leakage. In the event that DC leakage equal to or exceeding 6mA is detected the Electron EVW ends the charge cycle and opens relays that disconnects the vehicle. This feature allows the Electron EVW to be installed using a Type A RCD / RCBO.
That Pod Point hardware using this technology is being used should be noted in the comments section of the installation certificate issued by the installer, example statement below:
“This Electron EVW Charge Point includes a 6mA DC protection device, in accordance with regulation 722.531.2.101.”
RCD/RCBO “18th Edition” Changes
Up to the 1st January 2019 it was deemed permissible to install a charge point protected by a Type A RCBO only, however from January 1st 2019 the new 18th Edition of the IET Wiring Regulations (BS 7671) have come into effect. Risks from DC Leakage Fault The IET have recognised that if there is more than 6mA DC leakage and an AC fault at the same time on a circuit protected by a Type A RCBO, there is a very slight chance that the DC leakage could “blind” the RCBO and it wouldn’t trip on the AC fault.
The new guidance therefore calls for the installation of additional protections in the form of 6mA DC leakage detection. There are two options to meet the new guidance: •
- Fit a Type B RCD and an MCB at source
- Fit a Type A RCBO and build 6mA DC leakage detection into the charge point (an RCBO is effectively an RCD and MCB integrated into one unit).
To ensure you can charge as safely as possible, and to streamline installation (using a single, compact RCBO), Falcon Electric have chosen to build a 6mA DC leakage detection circuit into our chargers. In the event of a DC fault occurring, the Electron EVW will trip to a fault state and safely prevent your car from charging.
This fault state can be remotely diagnosed by Falcon Electric so we can ensure you get back up and running ASAP. A Type B would trip and no information would be provided as to what had caused this.