With the rapid development of renewable energy, new energy grid has become an important force to promote the global energy transition. However, due to the unstable voltage and frequency of renewable energy, traditional AC contactors have limitations in controlling new energy equipment, so DC contactors need to be used to control the power system. DC contactor is widely used in all kinds of power equipment, especially in the new energy, high-speed railway, electric vehicles and other fields, its use frequency is getting higher and higher.
Application of Contactor in New Energy Industry
1. Application in charging pile (machine)
used for DC charging pile, DC output side of charging station or output side of on-board charger. When the contactor is closed, it plays the role of connecting the charging pile and the car; when it is disconnected, it isolates the charging pile from the external connection and plays a role of safety protection.
2. Application in electric vehicles
A DC contactor is disposed between the battery system and the inverter of the electric vehicle. When the system stops running, it plays an isolation role, and when the system is running, it plays a connection role. When the vehicle is shut down or fails, the energy storage system can be safely separated from the vehicle electrical system to break the circuit. It is used as an electrical control device in other auxiliary circuits.
Contactor Mainstream Product Classification
at present, the contactor mainstream products are mainly divided into two categories: ceramic cavity sealing structure and epoxy glue sealing structure.
UL60947 certification required information
1. The applicant submits a written application for company and product information
2. Product information:
(a). Product Name: Provide the full name of the product.
(B). Product model: list all the product models, varieties or classification numbers that need to be tested in detail.
(c). The intended use of the product: for example: home, office, factory, coal mine, ship, etc.
(d). Parts list: list the parts and models (classification numbers), ratings, and names of manufacturers that make up the product in detail.
(e). Electrical properties: for electrical and electronic products. Provide electrical schematic diagram (wiring diagram), electrical performance table.
(f). Structure diagram: For most products, the structure diagram or diagram of the product, ingredient list, etc. shall be provided.
(g). Photos of the product, instructions for use, safety and other items or installation instructions.
1. Project determination: confirm the style, model number of the application;
2. Preparation of information
3. Sample delivery test: give the corresponding test certification scheme according to the application product information, confirm the test items, and send the samples to AnKeJie testing certification laboratory;
4. Issued report: the product test results meet the requirements of UL standard, and the test report is officially issued;
5. Factory audit: UL will conduct the first factory inspection of the production plant to ensure compliance with standard requirements;
6. Mark use: After the audit meets the requirements, the applicant is officially authorized to use the UL mark, obtain the certificate, and the project is completed.
Contactor UL certification advantage
for businesses, acquiring of UL60947 certification it is not only the certification of DC contactor product quality and the guarantee of safety performance, but also the huge improvement of corporate reputation and market competitiveness. In the market, brands that can pass UL60947 certification are considered by consumers as high quality and reliable products, thus winning more market share and user trust.
For consumers, choosing UL60947-certified DC contactor products can better ensure their own safety and property.