Vass Electrobar H-Series Busway is available in 'Feeder' and 'Bolt-On'
Take-Off Box versions with ratings from 600 Amperes to 7000 Amperes
AC and 980 to 12,100 Amperes DC. The IP rating for indoor Electrobar
Busways is IP50 and the feeder for outdoor applications has been
tested and certified to IP66.
All Vass Electrobar H-Series Busways can be supplied with either
natural copper or aluminium conductors in DC, 1Ø 2W, 3Ø
3W, 3Ø 4W (100% neutral) with an exterior earthing conductor.
Options are available for 200% Neutral, integral earth and plated
conductors. Additional options for stainless steel and aluminium
casings are also available.
The standard voltage rating is 660V. For applications requiring
higher voltages, please consult your Vass Electrobar busway representative.
COMPLIANCE WITH AUSTRALIAN AND INTERNATIONAL STANDARDS
Electrical Industries have been issued with the Certificate of Suitability
No. CS3641N from The Energy Authority as meeting all electrical
safety requirements, to Australian Standard AS3439.2 (Busbar Trunking
Vass Electrobar Busways have also been tested to British and International
Standards, BS5486-2 and IEC 60439-2 (ASTA Certified).
The following Type tests have been carried out:-
Short Circuit, Fault Current Withstand Capacity.
Resistance, Reactance and Impedance Tests.
Magnetic Flux Density.
Weatherproof Enclosure Tested to IP66
Superior 'Sandwich' Type Construction
'Feeder' and 'Bolt-On' Busways all use 'sandwich' type construction
to provide superior strength and voltage drop characteristics
even at low power factors.
High Corrosion Resistant Casing
The casing of the Vass Electrobar H-Series Busway has been carefully
designed to minimize hysteresis and eddy current losses. The
casing is manufactured from heavy plate zinc coated steel and/or
structural aluminium plate, with additional strength provided
by heavy duty bracing channels. An optional stainless steel
casing can also be supplied.
Vass Electrobar H-Series Busways are enhanced by the use of
a polyester powder coated finish. The polyester powder coating
process is fully automated with controlled electro-static application
of the coating and baking ovens.
Our automated powder coating plant is one of the most modern
in the industry and allows us to constantly monitor the quality
of the coating process and allows for changes of colour to occur
with short lead times.
The polyester powder coat used, provides a very tough and durable
finish. Its impact resistant nature results in less need for
touch-ups after installation. Excellent resistance to ultraviolet
(UV) light breakdown ensures constant protection for both indoor
and outdoor applications for many years after installation.
As well as the casing, Vass Electrobar H-Series Feeder Busways
incorporate an external earthing conductor (unplated, natural
finish) attached to the casing running along the entire length
of the Busway and across the joint. This allows for earth connections
anywhere along the run. Where the casing is manufactured from
non-ferrous materials, an external earthing conductor may not
The earthing conductor has been tested to 40kA(rms), 88 kA(peak)
and 60 kA(rms), 132 kA(peak) for 1 second.
Reliability and High Fault Current Withstand Capability
Vass Electrobar H-Series Busway fault current withstand capabilities
have been tested up to 100 kA (220 kA peak) for 1 second and
80 kA (176 kA peak) for 3 seconds according to the standards
set out in AS3439.2 and IEC60439-2.
Low Temperature Rise
A significantly lower temperature rise at rated current is achieved
through superior design and larger cross-sectional area of the
conductors. Busway Standards AS3439.2 and IEC 60439-2, specify
a maximum temperature rise above 40°C ambient of:
- Copper conductors: 70°C
- Aluminium conductors: 55°C
- Outer casing: 55°C
Low magnetic Flux Density
The Vass Electrobar H-Series Busway magnetic flux characteristics
have been fully tested. The tests were conducted with the Busway
in the most unfavourable position. Thus it is very important
when comparing the magnetic flux densities of other Busways,
that the test arrangement be known, since other configurations
may artificially improve test results by a significant amount.
All busbars are insulated using Class B insulation. This allows
for a continuous maximum operating temperature of 130°C,
with a short-time temperature rating of over 200°C.
Vass Electrobar H-Series Busways have all their conductors
fully enclosed in three (3) continuous layers of moulded insulation,
which ensures long life and high dielectric strength.
Vass Electrobar H-Series Busway joints are designed to accommodate
the small amount of thermal expansion generated between each
Therefore NO expansion fittings are necessary for this purpose.
Expansion fittings are available when the Busway crosses a building
expansion joint. If flexible Busway supports are used then expansion
fittings may not be necessary.
Factory Prepared Joint Surfaces
Tests have shown that plating does not improve the performance
or reliability of properly designed and installed copper or
aluminium joints. All Vass Electrobar H-series Busway conductors
are supplied as standard in their natural (unplated) state.
Joints are supplied to site, protected by dust covers and ready
for use without further preparation.
Plated Busbars can be supplied if at all required.
Voltage Drop Considerations
The very Low Impedance of the Vass Electrobar H-Series busway
is ideal when voltage drop is critical. The Busway systems exhibit
excellent voltage drop characteristics on applications requiring
high currents and long route lengths.
The conductors and insulators of Vass Electrobar H-Series Busway
are rigidly held by the casing and there is almost no detectable
noise when energised.
Unique Adjustable Section
Electrobar H-Series Busways are the only system to feature the
unique Adjustable Busway Section, which has been designed to
In the past, one of the limitations of Busways has been that
their length cannot be adjusted on site. This has resulted in
additional costs caused by the need to manufacture site-measured
pieces, delays in installation and interruptions to building
The Adjustable Section for the H-Series Busway ensures easy
length adjustment on site to absorb the dimensional discrepancies
in the location of equipment connected to the Busway or those
of the building itself. The range of adjustment is + 50mm per
ADAPTABLE TAKE OFF BOXES
Vass Electrical Industries is able to produce any style and size
of Take Off Boxes to suit your requirements. Circuit protection
by Moulded Cases Circuit Breaker, Combination Fuse Switches, Fuse
Switch Disconnects, HRC and DIN fuses, etc of any capacity or manufacture
can be offered.
Additional project specific requirements such as Building Automation
System (BAS) control circuitry, distribution meters and anything
you require can be added to suit.