has a number of protection features built into the device to make it safe and simple to install.
The RCD (Residual Current Device) will trip the output from if there is an electrical fault to ground. The RCD is
similar to the protective devices found in most domestic consumer units (the “fuse box”) but the standards for electric
vehicle charging require additional protection for small DC leakage currents. provides this protection in
accordance with EN 62955 (Integral 30mA Type A RCD + 6mA DC leakage protection). Local wiring regulations
should be checked to confirm whether an additional upstream RCD is also required.
If there is an electrical fault to ground and the RCD operates the display will show RCD Tripped!
To reset the , make sure that the fault has been removed and then press the button for three seconds.
The Protective Neutral and Earth (PEN) conductor refers to part of the electricity cable to the property. If this
conductor is damaged there is a danger that the chassis of the electric vehicle being charged will become “live” and
cause an electric shock. BS7671:2018 Amendment 1:2020 part 722.411.4.1 requires that extra protection is provided
to prevent an electric shock – either by fitting an extra earth electrode or through a device which detects the fault
and disconnects the supply.
has this protection built-in
and will disconnect the output if it detects a problem with the PEN conductor or
detects that there may be any electric current flowing through the chassis of the EV. This built-in protection means
that there is no need to install an earth electrode with the .
If detects a problem with the PEN conductor then the display will show PEN Fault!
To reset the , check the continuity of the earth cable and then press the button for three seconds.
can measure the continuity of the protective earth conductor (the earth wire) on the supply cable. If the earth
is disconnected or has a high impedance, then will trip and the display will show PE not connected!
To reset the , make sure that the fault has been removed and then press the button for three seconds.
includes protection to make sure that the supply to an EV is disconnected if there is a problem with the circuit
breaker. This includes a situation where the contacts on the breaker are welded together. This is a specific
requirement of the Renault “Z.E. Ready” and ASEFA “EV Ready” standards (e.g. requirement for Nissan).
If detects a problem with a welded contact, then the display will show RLY WELDED!
If this happens and the fault cannot be reset by pressing the button for three seconds, then please contact
technical support at support@myenergi.com.
If there is a problem with the equipment on the EV which charges the vehicle’s battery, too much current may be
drawn from the supply. If this happens, cannot control the charge rate as expected and it could lead to problems
with overheating or tripping the main circuit breaker to the .
