The UL1446 Electrical Insulation System certification, UL1446 authentication of Electrical Insulation System，OBJY2 certification for transformer insulation system

Do you want to pass the UL1446 certification of the insulation system conveniently? Our company ( Global Technical service Co. Ltd.) is specializes in UL1446 insulation system certification, UL1446 certification (OBJY2) insulation system, and OBJY2 certification for transformer insulation system. Electrical Insulation System For short, EIS, is a variety of insulating materials collocation so as to achieve a certain temperature rating, a combination of materials. Such as put the Wire, Bobbin, Tape, Varnish together to be a GROUP, this group, if approved by UL 1446, will become a valid insulation system. We can help you to get the UL certificate at first time.
Insulation system is used for electrical equipment by two or more than two kinds of insulation material composed to tight combination, it is widely used by transformers, motors (motors), inductors, pumps, ballasts, and other manufacturers. Insulation materials are generally has enameled wire, or frame core tube, tape, wire, tube, varnish, tie etc., The insulation system has a clear temperature grade distinction, and the American UL temperature rating is divided into: class A 105℃, class E 120℃, class B 130℃, class F 155℃ class H 180℃, class N 200℃, class R 220℃, class S 240℃ etc.
 
UL1446 Standard for Systems of Insulating Materials – General
 
A.      Major components--Insulation system relies on these components to prevent electric shock or prevent fire: wire, ground insulation, interwinding insulation, encapsulant.
B.      Minor components--The insulation system does not rely on these components to prevent electric shocks or prevent fire, but with the mechanism of the components of the ability or capacity of heat transmission. This component have bobbin (Improper doing the ground insulation) varnish (not to declare main insulation), margin tape, Cross - line fixed tape, interlayer tape, PVC lead, window insulation (with ground or dead metal have the distance of 0.8mm or more)
Each temperature level of the insulation system should be tested rigorously by the thermal aging required of the standard UL1446. The test is not only for the performance of individual materials, but also for the compatibility or matching of the whole system. Therefore, the system will be one by one to test or evaluate qualified varieties and specifications of materials added, the system is also established. For example, the main insulated tape was contains multiple adhesive tape suppliers, like 3M, and a variety of specifications of products of each supplier will also be add in, other as skeleton material, casing and varnish are same with before.
 
Benefits of applying UL certification for insulation systems:
1.         All winding products are certified together in a short time, and avoid the trouble of single product inspection and reduce the cost.
2.         Products can be affixed UL signs, to enhance the company's image and product quality, and meet the customer needs.
3.         The material sources are wide and the cost is low, Such as:Changchun bakelite T-373J, 3M tape 1350, Lan LingTeflon branch pipe, No limit label pinout, Four dimensional adhesive tape MY9 and DuPont, Nomex, Nylon, PBT and so on.
4.         Low temperature materials are used in high temperature systems to reduce material purchasing costs.
5.         Use of non solvent varnish, to reduce environmental pollution, and solve the problem of danger for inflammable products, noise of finished products, temperature rise etc..
6.         A wide range of temperature and voltage ranges, such as: low voltage 600V, high voltage 34.5KV and 130~240 DEG C.
 
The UL1446 main test standard directory:
9 Magnet Wire Coatings/Magnet Wires
10 Varnishes – Thermal Aging
11 Insulation Systems – Full Thermal Aging
11.1 General
11.2 Samples
11.3 Exposures
11.4 Diagnostic tests – determination of end of test-life
11.5 Analysis and evaluation
12 Insulation Systems – One Temperature Thermal Aging
12.1 General
12.2 Samples, exposures, and tests
12.3 Analysis and evaluation
13 Insulation Systems – Two Temperature Thermal Aging
13.1 General
13.2 Samples, exposures, and tests
13.3 Analysis and evaluation
14 Sealed Tube Testing
14.1 General
14.2 Samples
14.3 Conditioning
14.4 Interpretation of results of non-bondable wire
14.5 Interpretation of results for bondable wire
15 Infrared Analysis Tests