Multi-B Sdn.Bhd.
With Technical Collaboration from Japan
Engineered to Serve the World of Tomorrow
Translite MF Busduct
TM
Translite Project Sdn Bhd, which
is a part of Translite International
Corporation, was established in 1989 as a
means to market the Translite MF
(Maintenance-Free) Bus ducts.
Multi-B Sdn Bhd a subsidiary
company of Translite Project Sdn Bhd,
manufacture the Translite MF bus duct
through technical collaboration from Japan. Contents
Industrial training and production process
1. An Introduction
familiarization was soon introduced in
accordance with the technical and 2. Special features
production personnel were sent to Japan to 3. Product specification
be trained. 4. Insulation Comparison
Through a marriage of technical 5. Joint Comparison
knowledge and dogged determination to 6. Third Party Type Test (Not full
succeed, Translite managed to achieve copies, for complete details please
stellar results within and around the Asia contact Multi-B Sdn Bhd.)
Pacific region. Some of our prominent 7. Supply Record or project reference
clients/projects where you can find in this
document.
2007 & 2008
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Multi-B Sdn.Bhd.
Special features
TRANSLITE MF BUSDUCT SPECIAL FEATURES
WITH TECHNICAL COLLABRATION FROM JAPAN
Housing Construction & Design
Translite MF Bus Duct offers a very compact housing design for ease of installing and
handling. The metal housing material of Translite MF Bus Duct is chosen to be
Eletro-Galvanized (EG) sheet. With the excellent anti-rust and anti-scratch property,
Translite MF Bus Duct can be installed in a robust and most severe operating
condition. The EG sheet thickness of the Translite MF Bus Duct has been carefully
designed to accommodate conductor expansion while achieving the good mechanical
strength.
Conductor Conductivity
Conductor conductivity is a vital factor of the Bus Duct. Hence, Translite MF Bus
Duct only employs at least 99.98% pure copper bar, which has the Ampere Rating of
more than 2.77 A/mm2. All 99.98% pure copper bars are purchased from world
renowned copper manufacturer which excellent quality control. Also, all 99.98% pure
bars installed in Translite MF Bus Duct are certified with original copper purity
content by the copper manufacturer, which can be issued upon request.
Maintenance Free Joint
Translite MF Bus Duct provides a maintenance free joint solution for life operation.
There are three main designs breakthrough in Translite MF Bus Duct, i.e. overlapping
Joint System, Maintenance Free Nut and a Special Alloy Surface Treatment. Out of the
three designs, the The overlapping System and the Maintenance Free Nut are patented
in both Japan (1443372 & 1354972) and the United States Of America (3598550).
1) Overlapping
Translite MF Bus Duct patented Overlapping joint system
offers incredible stability, durability and ease of operation.
Multiple conductors, insulators and duct joiners are tightened
with a MF Nut which serves as an electrical and mechanical
joint. The other important components incorporated in our
joint system are the Belleville Washer, High Tension Bolts,
Fitting Stopper and Captive Hardware. The Belleville Washer
disperses the pressure on overlapping conductors and absorbs
thermal expansion and contraction. The High Tension Bolts
with heat proof insulation are pre-fit into the joint covers,
which prevent any removal and alignment of bolts during
jointing. The Fitting Stoppers are provided at the duct joiner
for regulating the conductor overlapping during jointing. Last
but not least, the captive hardware stops the turning of the joint
bolts for ease of tightening.
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Multi-B Sdn.Bhd.
2) Maintenance Free Nut: ~
Translite MF Bus Duct tightens all joints with the
maintenace free (MF) nuts. The MF nut has a continuous
inner thread and a torque limited neck. Thus, a little torque
remains when the neck is broken, which locks automatically
and will never loosen. The torque limited neck will break at
a torque of 1200 kgf/cm. The tightening of the nut can be
confirmed visually by observing the slip indication line
carved on the nut surface.
3) Special Alloy Surface Treatment: ~
Copper conductor contact surface require special treatment
for stable and long-lasting operation. Normal silver or tin
coating copper contact surface, which is the most common
solution, will cause peeling or „blister‟ during long hours of
contact. Hence, these plated surfaces are structurally weak
and most vulnerable to friction. Translite MF Bus Duct
evolves a new solution by applying Special Alloy coating
with excellent adhesion bondage properties to contact
surfaces. The Alloy treatment coated surface can withstand
long hours of cyclical thermal heating process without any
peelings.
Insulation
Translite MF Bus Duct strongly insists on the 4 layers of 500 microns polyester film
to enhance the dielectric strength. 4 layers of 500 microns polyester film possess a
dielectric strength as high as 155 Kv and running temperature of -70°C + 150°C.
Besides, the 4 layers of 500 microns polyester film offers water and air tightness and
insulation thickness consistency over the entire length. Under any accidental water
leakage into the metal housing, no droplet of water can actually touch the copper
conductor. The good mechanical stress properties inherited by the 4 layers of 500
microns polyester film is adequate to cater for any copper expansions.
Vertical Components
Translite MF Bus Duct is the only bus duct use a single piece copper for the vertical
components. Rather then others do a welding to joint 2 pcs copper bars together. Please
refer below
Welded Joint.
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Multi-B Sdn.Bhd.
Product Specification
No Description Technical Data
1 Country of Origin Malaysia
2 Manufacturer Multi-B Sdn Bhd
3 Brand Translite MF Bus Duct
4 Originated With Technical Collaboration from Japan
BS EN 60439-Part 2
5 Standards IEC 439 Part 2
JIS (Japan)
6 Rated Voltage 600V-1000V
MBD- Air Insulated Bus Duct
200A,250A,300A & 400A
7 Range of current rating
IBD Insulated Bus Duct
600A,800A,1000A,1200A,1500A,1600A,2000A, ,
2500A, 3000A, 4000A, 5000A and 6000A
Electro Galvanized Sheet (JIS G 3313) Coated with
8 Housing
epoxy powder coating for double protection.
1.6 mm for 600A – 2500A
9 Housing thickness
2.3mm for 3000A – 6000A
Purity-99.95% (Mill Cert Provided)
10 Conductor
Conductivity-100.9 % (IACS) (Mill Cert Provided)
11 Insulation Polyester Film
11.1 Dielectric strength 155 KV
11.2 Temperature range - 70ºC - 150ºC
11.3 Melting Point 263ºC
11.4 Tensile Strength 25 kg/mm²
11.5 Physical elongation 130 %
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Multi-B Sdn.Bhd.
No Description Technical Data
12 Joint Type Maintenance Free Over Lapping joint system
12.1 MF Nut
Patented in
(a) Japan – 1443372 & 1354972
Pre torque to 1200 kgf/cm (For more information pls contact
12.1.1 Torque Force
Multi-B Sdn Bhd.)
13 Joint Treatment Special Alloy Solution which gives a soft surface.
14 Third Party Test KEMA, ASTA, LOVAG, PSB, SIRIM & CRIEPI(Japan)
15 IP Specification IP 42, IP54, IP55,IP65, IP66, IP67 & IP68
IP42 – IP55 – SIRIM Malaysia
IP55- IP67- SIRIM Malaysia
15.1 Tested Bodies
IP54-IP65- PSB Singapore
IP55- LOVAG & KEMA
16 Fire Resistance Specification Standard BS 6387:1994
16.1 Type M6ZBDFR
16.2 Test Report No 54S02796/ST
16.3 Tested Body PSB Singapore
16.4 Resistance to Fire Category C at 950 °C
16.5 Duration of test 3 hours
17 Short Circuit Rating Please refer to our 3rd party type test certification
Please refer to the Technical Submittal or our catalog in
18 Voltage drop
page no 20 & 21
Note: All the information is subject to change without prior notice for continuous improvements
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Multi-B Sdn.Bhd.
Insulation Comparison
Following are general comparisons between FOR Polyester and AGAINST Epoxy, which are
common materials use as insulation in busway system:
1. Maximum Operating Temperature :
FOR: Polyester: 150°Celcius.
AGAINST: Epoxy: 130°Celcius
Polyester has much higher operating temperature limit. Over prolong usage and high
amperage loading (hence high operating temperature), Polyester will not deteriorate easily.
It maintains reliable and effective insulation properties over a longer life span.
2. Number of Layers of insulation:
FOR: Polyester: Multiple layers applied. Eg, In Translite MF Bus duct System,
under technical collaboration with Hitachi Cable Ltd, FOUR
layers of 125 micron thickness, total of 500 micron thick are
applied in-between conductors.
The overlapping layers results in air-tight seal that is sufficient to
guard against any moisture that might make its way through the
bus duct housing.
We choose the best quality polyester film from TORAY, using
Lumirror brand polyester film. (Please find attached technical data
of our Lumirror polyester film.)
AGAINST: Epoxy: One layer applied. Ie, only TWO layers in-between conductors.
Microscopic pin-holes (“weak spots” for flash-over) are inevitable
in most materials. Having more layers (of Polyester) minimizes the
chance of pin-holes coming into alignment, hence minimizing the
chance of flash-over across conductors
3. Application Methods:
FOR: Polyester: Pre-fabricated sheets wrap around the conductor.
AGAINST: Epoxy: Commonly coating by “fluidized-bed coating (FBC)” method.
Above methods yield the following differences:
3.1 Thickness:
FOR: Polyester: Consistent and uniform thickness throughout the conductor.
AGAINST: Epoxy: When conductor is dipped into bed of liquid Epoxy (FBC), while
being hung-up to cure, gravity causes coating on lower side to be
thicker than upper side.
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Multi-B Sdn.Bhd.
3.2 Contaminants:
FOR: Polyester: Pre-fabricated sheets wrap in clean environment, minimizing dust
trapped in-between conductors.
AGAINST: Epoxy: Bed of liquid Epoxy is used over and over. Contaminants
deposited in liquid Epoxy get “coated” onto conductor, adversely
affecting reliability of insulation.
3.3 Peeling & Flaking:
FOR: Polyester: Polyester sheets do not adhere to the conductor, hence do not peel
or flake.
AGAINST: Epoxy: Epoxy coating adheres onto the conductor. Inherit changes in
properties over usage cycle may cause Epoxy to flake.
4. Effects from Coefficients of Expansion:
FOR: Polyester: No effect.
AGAINST: Epoxy: May result in peeling and flaking.
There is difference in coefficient of expansion between insulation
material and conductor. As polyester sheets are wrap-over,
different rates of expansion and contraction (between Polyester and
conductor) resulting from thermal cycling has no adverse effect on
properties of Polyester insulation. On the other hand, Epoxy may
peel and flake.
For polyester, its physical elongation can expand to 130%. But
epoxy insulation elongation it can only reach 106%, or just 6% of
its physical self. Thus in event of expansion, the epoxy insulation
has a tendency to crack whereas polyester will never.
5. Dielectric Strength:
FOR: Polyester: 155KV/500 micron
AGAINST: Epoxy: 25KV/125 micron.
Therefore the insulation breakdowns are very crucial. The higher the dielectric strength
withstood, the better it is, as shown, our polyester is 6 times higher than epoxy.
Conclusion:
Polyester insulation, besides being functionally effective, is more reliable than Epoxy
insulation given many technical advantages such as those mentioned above.
Other properties of Polyester such as its high dielectric and tensile strengths, resistance to
chemicals, low moisture absorption, etc, also make it a good choice of insulation material to
be used in bus duct system.
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Multi-B Sdn.Bhd.
Bus Duct Joint - Comparison For/Against
AGAINST BLOCK JOINT FOR OVERLAPPING JOINT
BLOCK JOINT
Our overlapping
In order to joint, joint works as a
there is a 3mm male and female
copper bars 2 pcs joint, where you
each phase to just need to push
overlap the phase right up to the
bar of the bus duct stopper.
Block joint will be
placed in between
the 2 bus duct as
Make the bus duct inline and just need to push through
until it reaches the stopper
Inconsistent joint surface area always happens due to
the tolerance.
The block joint has the certain allowances which
allowed adjusting if there is any mistake in site
measurement.
After the adjustment, there will be bigger clearance A consistent joint surface area is always achieved with
between the bus ducts. the use of the stopper in the simple joint system, which
provides an automatic guard guidance to ensure the
installer does not push too far in or out
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Multi-B Sdn.Bhd.
AGAINST
FOR
The joint nut is a normal
nut.
The neck part of MF
nut shall be broken at
the fixed torque (The
tightening torque
Tightening force will become a little smaller
happen in the middle of at the moment the
the joint block. neck part is broken).
Tightening force will
happen in the middle
of the joint block. The simple joint system and the Maintenance
Free (MF) nut, pioneered by Hitachi Cable
Ltd, has made life a lot easier for installation,
something our competitor have not achieve.
Once a joint has been completed according to
our installation manual, it can be left there for
the rest of the useful life of the bus duct.
Due to the bigger clearance create an air gap, when the
tightening happen the 3 mm copper will whap in the
corner and it creates an air gap between the bars end up
in big disasters.
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Multi-B Sdn.Bhd.
TYPE OF 3RD PARTY TEST ACCORDING IEC STANDARD.
IEC 60439-2 3rd Certification
No
Edition Clauses
Description Body
Verification of temperature-rise
1 8.2.1 KEMA
limit
2 8.2.2 Verification of dielectric properties KEMA
Verification of short-circuit
3 8.2.3 KEMA
strength
Verification of the effectiveness of
4 8.2.4 KEMA
the protective circuit
Verification of clearances and
5 8.2.5 KEMA
creepage distance
Verification of the degree of
6 8.2.7 KEMA
protection
Verification of electrical
7 8.2.9 characteristics of busbar trunking KEMA
system
8 8.2.10 Verification of structural strength KEMA
9 8.2.12 Verification of crushing resistance KEMA
Verification of the resistance of
10 8.2.13 insulating material to abnormal KEMA
heat
Verification of resistance to flame
11 8.2.14 LOVAG
propagation
Verification of fire resistance in
12 8.2.15 KEMA
building penetration
Note: The entire above test was carried out in accordance with the IEC 60439-2,
3rd Edition. 2000-03 and Amendment A1 2005-08.
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Third Party Type Test
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