UL rating for
ROLINX® Busbars
Product Information
In the industry of laminated busbars, the UL-ratings for busbars are
often limited to the UL-94 flammability rating classes. However,
often the customers’ end products require complying with the
ULC standard (Power Conversion Equipment). Since a busbar
is not considered an end product but a component of a complete
converter, it can not be directly listed to ULC. When however,
fulfilling the requirements in the ULC test standard, it complies to
specific requirements applicable for busbars used in Power Conversion
Equipment.
Rogers, in close co-operation with UL, has been able to define a new
and complete UL-file by creating a modular and intelligent busbar
construction. This busbar construction has been tested against ULC
and enables Rogers to use the UL-marking for almost any busbar design
-varying in thickness, conductor layers, insulations, etc.- in a faster and
easier way to get your end product ULC listed.
The Rogers engineering team can help design the right busbar
construction that meets this new UL-rating. This allows you to get your
busbar design UL-approved, reduce proper validation time and expenses
and bring your end product faster to the market. With this new UL-
listing Rogers can deliver most of the designed ROLINX® busbars with
the UL-mark.
This new UL file for ROLINX busbars shows all required ratings for
busbars according to ULC.
It consists of:
// Flammability rating (UL)
// Hot-Wire resistance to Ignition (HWI)
// High Current Arc resistance to Ignition (HAI)
// Comparative Tracking Index (CTI)
// Relative Thermal Index (RTI)
Advantages
A ROLINX busbar tested according to ULC offers:
// Easy UL-approval due to a new UL-file and intelligent
and modular busbar construction
// Reduction of the validation time and internal
preparation cost for your complete ‘end product’
// Shorter time-to-market for your product
// A guarantee for product quality
// Reduction of engineering time, including less
prototype iterations: right the first time
// Avoidance of over-design
Upon customers’ request, ROLINX busbars can be
marked as a ‘recognized component’. This
marking
is a UL-marking for components and is under strict
supervision of UL.
(Note UL: The Component Recognition marking is found
on a wide range of products, including some switches,
power supplies, printed wiring boards, some industrial
control equipment and thousands of other products.)
Finally, this marking will allow you to get your
endproduct UL-listed faster (UL-marking =
).
// UL508C: for Power Conversion Equipment
These requirements cover devices rated Volt or less.
// UL-94: The Standard for Flammability of Plastic Materials for
Parts in Devices and Appliances
UL- defines a test program conducted on plastic materials
to measure flammability characteristics. It determines the
material’s tendency either to extinguish or to spread the flame
once the specimen has been ignited.
// HWI: Hot-Wire resistance to Ignition
Hot-Wire Ignition performance is expressed as the mean
number of seconds needed to either ignite standard specimens
or to burn through the specimens without ignition. The
specimens are wrapped with resistance wire that dissipates a
specified level of electrical energy.
// HAI: High Current Arc resistance to Ignition
High-Current Arc Ignition Performance is expressed as the
number of arc rupture exposures (standardized as to electrode
type and shape and electric circuit) that are necessary to ignite
a material when they are applied at a standard rate on the
surface of the material.
// CTI: Comparative Tracking Index
Comparative Tracking Index is expressed as that voltage which
causes tracking after drops of . percent ammonium
chloride solution have fallen on the material. The results
of testing the nominal mm thickness are considered
representative of the material’s performance in any thickness.
// RTI: Relative Thermal Index
Maximum service temperature for a material, where a class
of critical property will not be unacceptably compromised
through chemical thermal degradation, over the reasonable life
of an electrical product, relative to a reference material having
a confirmed, acceptable corresponding performance defined
RTI.
ROLINX busbars are listed
under file E, for
review purposes availabe
on the public UL Online
Certifications Directory.
© Rogers Corporation. All rights reserved. Publication # - Version . en.
UL rating for ROLINX® Busbars Product Information
Rogers BVBA
Power Electronics Solutions - ROLINX
Afrikalaan
Gent
Belgium
Phone + -
Fax + -
Rogers Technology (Souzhou) Co., Ltd.
No. West Shenhu Road
Suzhou Industrial Park
Suzhou, PRC,
Phone + -
Fax + -
europe@rogerscorp.com
www.rolinx.com
www.rogerscorp.com/pes
Available ratings
*
Mtl Dsg Color Min
thk
(mm)
Flame
Class
HWI HAI RTI
Elec
RTI
Mech
Str
CTI
YE-(a)-(b) WT .
.
V-
V-
-
YEs-(a)-(b) WT .
.
V-
V-
-
YEt-(a)-(b) WT . V-
WH-(a)-(b)
WT .
.
.
V-
V-
V-
-
-
CO-(a)-(b)
WT .
.
.
V-
V-
V-
-
-
YEs-(a)-(b)-WM
WT .
.
V-
V-
-
YEt-(a)-(b)-WM
WT .
.
V-
V-
-
WH-(a)-(b)-WM
WT .
.
.
V-
V-
V-
-
-
CO-(a)-(b)-WM
WT .
.
.
V-
V-
V-
-
-
The information contained in this document is intended to assist you in designing with Rogers’
Power Electronics Solutions Materials. It is not intended to and does not create any warranties,
express or implied, including any warranty of merchantability or fitness for a particular purpose or
that the results shown in this document will be achieved by a user for a particular purpose. The user
should determine the suitability of Rogers ROLINX Busbars for each application. The Rogers logo, the
ROLINX logo and ROLINX are trademarks of Rogers Corporation or one of its subsidiaries.
* Insulated busbar, single- and multi-layer, furnished in various configurations
Definitions