When it comes to the requirements of current transformers (CTs), approval and registration can lead to quite headache inducing inspections and installations. Cracking certification and sealing by screening different products and components can be a considerable challenge, which is why understanding the differences between UL certified current transformers and UL certified current transformers is so important. Using this article as a guide, if you have any questions, please contact the engineers at Weikewei and we will help you make the right decision.

Firstly, we need to understand UL,UL is a global independent safety science company dedicated to promoting safe living and working environments. UL helps protect people, products, and places in important ways, promotes trade, and provides peace of mind. (UL.com) It is also an American insurer services organization.UL certified products are marked with the UL certified seal and accompanied by relevant manufacturing information, including the manufacturer's name, trademark, trademark, and/or other authorized markings. To avoid fraud or confusion, please be sure to note that all design elements of UL certification seals are on the device. Search: The letters UL contained within the circle, the uppercase letter "List" below the circle, an alphanumeric control number, and the product name.

What is a UL certified current transformer?

If you have searched for product packaging and hardware but have not found the UL certification mark, then you are likely to find the UL certified component mark,

ULApproved current transformers are marked with UL approved component markings. This special seal is used to pre order components or materials for a complete product or system, rather than those components or materials sold as end-user products. According to UL's official guidelines, "these components are only intended for inclusion in other end use products that may comply with UL's list, classification, or certification services

Require UL registered products to be configured in the laboratory to ensure that the entire solution is covered by UL. If the product is UL certified, this is not a requirement, making installation more reasonable

As a component survey, packaging in the factory as part of a complete system is a survey that complies with UL (as a potential UL listed product)

Current transformers with only UL approved markings should be considered as products not included in the list. Importantly, the instrument and CT are fully compatible, which can only be identified by the existing UL certification mark

It's better to checkULTo verify the required device authentication