6.
According the way connecting protective conductors there are:
− separable terminals,
− inseparable terminals.3 Terminals for protective conductors
According the purposes connection protective conductors can distinguish:
− inward terminals,
− outward terminals.
.
Inseparable terminals could made soldering, welding moulding. Conductive connection these parts the separate
protective conductor represents equipotential bonding (main supplementary). One part separable terminals shall made corrosion
resisting material, preferably brass.
A washer ring shall inserted into the screw terminal for carrying over the contact
pressure effecting the conductor.CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT 61
− where electrical monitoring earth-continuity used, the operating coils shall not be
inserted protective conductors.
The separable terminal for connecting the protective conductor the exposed conductive
part made screw terminal. For screw terminals determined for higher values current
than the springy element shall used.
The inward protective terminal situated close the phase terminals and determined
for the protective conductor, which the part the supply cable. reliably conductively
connected the exposed conductive part the supplied appliance equipment.
All exposed conductive parts electrical equipment mounted stage shall durably and
reliably connected the terminal for protective conductor. situated the outer surface the exposed conductive
part equipment and used for connection with exposed constructive parts other equipment
and with extraneous conductive parts.
The outward protective terminal determined for the connection separate protective
conductor for equipotential bonding. Proper installation electrical equipment
As for the danger excessive temperatures, following measures shall carried out.
The reliability conductive connection between the main part the equipment and the
separable part the equipment (lids doors) shall not influenced ageing deformation
of packing between both parts.
6.3.4
