CATALOGUE

HR Features
HR is the Zucchini line used for transport and
distribution of High Power.
The applications include all industrial, commercial
and service sector buildings.
The HR line is available: from 1000A to 4500A
with aluminium alloy conductors and up to
5000A with copper conductors.
HR, as all Zucchini products, is not only in
compliance with the harmonised Standards
CEI EN 60439-1 / 2 but it also goes beyond the
required regulations: as a result, according to
the manufacturer’s choice, the rated current
of Zucchini’s busbar trunking systems is always
referred to the average ambient temperature
of 40 °C against the 35 °C required by the
Standard, thus providing the markets with suitably
upgraded products.
The outer casing of the HR line is built with
four rib-shaped C-type section metal structural
components (thickness 2.0 mm), made with hot
galvanized steel with processes in compliance
with UNI EN 10327. The casing of the line has
ventilation holes which, along with the shape of
the conductors, facilitate the air circulation inside
the duct as well as the heat loss generated by the
Joule effect. The standard degree of protection is
IP30, (IP31 on request).
The busbar conductors have a rectangular
cross-section with rounded corners; there are two
versions:
- Electrolytic copper ETP 99.9 UNI EN13601
- Aluminium alloy treated over the whole
surface with 5 galvanic processes
(copper plating + tin plating)
The insulation of the busbars is ensured by a
plastic, insulating, non-desiccant double-tape
with high di-electric strength and through an
extended clearance.
The busbar conductors are supported by plastic
insulators reinforced with 20% glass fibre, with
class B thermal resistance (130°C).
All plastic components have a V1 self-extinguishing
degree (as per UL94) and comply with the glow-wire
test according to EN 60695-2-1 (CEI 50.11).
The junction contact is ensured by a monobloc
with shearhead bolts and two silver-plated
copper plates for each phase, insulated with
class F thermosetting plastic material.
Finally, in order to completely verify the insulation
level, every element undergoes an insulation test
(phase-phase, phase-PE) with a test voltage of
5000V.
64 HIGH RATING