Nuvotem Talema have several "Family" approval files with
Underwriters Laboratories. Unlike some of our competitors, Nuvotem
Talema have invested the time and effort to enable automatic UL
recognition of new custom transformers, without having to send each
transformer to a UL test facility for their approval.
It is a
mark of UL's confidence in our research and development abilities
that we have an agreed file of design criteria which must be met, to
ensure approval to UL506 or UL544
These "Families" may
be divided as follows:
- UL
506 - Speciality Transformers
- UL
544 - Medical and Dental Equipment
- UL 1950
- Information technology Equipment, including Electrical Business
equipment
- UL 6500
- Audio/Video and musical apparatus fro household, commercial and
similar general use
- Temperature
Classes B, B1 and F
E215495
: UL 506 - Speciality TransformersFile E215495
is our most requested UL approval file for Power Transformers ;
- Maximum total power rating: 3000VA
E218027 : UL 544 - Medical and Dental EquipmentFile
E218027 covers transformers for Medical and dental equipment, which
require more stringent insulation and overload protection levels.
- Usually requires an Earthed Screen between windings.
- Usually requires a thermal fuse for overload protection.
E218027 : UL 1950 - Information technology Equipment, including
Electrical Business equipmentFile E218027 Volume 2 covers
the 70000K
series of PCB mounting transformers which were evaluated to the
construction requirements of UL1950 Second Edition.
E218027 : UL 6500 - Audio/Video and musical apparatus fro
household, commercial and similar general useFile E218027
Volume 2 covers the 70000K
series of PCB mounting transformers which were evaluated to the
construction requirements of UL6500
E217412 : Insulation systems with Temperature Classes B, B1 and
FFile E217412 : These higher temperature classes cover
both UL506 and UL544
- Class B - 130 degrees maximum temperature, Using all materials
minimum Class B
- Class B1 - 130 degrees maximum temperature, Using specific
materials from specific manufacturers
- Class F - 155 degrees maximum temperature
Other UL ApprovalsAs well as our Family Approvals, Nuvotem
Talema also have numerous individual products approved to various
UL
standards, such as UL1411, UL1950, UL2601, etc.
UL Factory InspectionsTo ensure our conformance with our
UL files, the UL authorities conduct random factory inspections
several
times per year, and verify that our internal processes and
procedures are being adhered to, and that the products we are
marking as being "UL Recognised" are indeed in conformance with the
agreed UL files.
We are also listed as factory locations
for several customers' own UL approval files, and are subject to
audits
on these files also.
Canadian ApprovalsNuvotem Talema also offer C-UL approvals
to Canadian Standard C22.2 No. 66-1988 "Specialty Transformers" for
60Hz only power transformers. |
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