What is power cord composed of ?

The structure of power cord is not very complicated, it is mainly composed of metal conductor and insulation ourter jacket. Common metal conductors are copper which have good ductility and conductivity. As for insulation cover, the application of its material is very wide, common materials include:

  • Polyvinyl chloride(PVC):rated temperature 60°C
  • Heat-resistant PVC:rated temperature 75°C、80°C、90°C、105°C
  • Polyethylene(PE):rated temperature 75°C
  • Irradiated polyethylene(XL PE):rated temperature 90°C、105°C
  • Silicone rubber(SLICON):rated temperature 180°C


How to choose plug and power cord ?

Generally, different regions have different safety standards. As a result, you have to confirm where your product will be used when choosing plug. At present, the mainstream power cord certification bodies are : UL (U.S.A), CSA (CANADA), ENEC(EUROPE),BSI (UK), SAA(AUSTRIALIA), PSE(JAPAN), CCC(CHINA), BSMI(TAIWAN).

In addition to the area of use, you also need to pay attention to the environment in which the power cord is used, such as humidity, temperature, long-term sunshine, easy contact with oil or corrosive substances... etc.

Finally, you also need to know how much power your product needs to drive the work, matching the rated voltage of each region, so that you can find a suitable power cord.

How to judge whether the power cord can be used safely ?

First, you can check whether the power cord has the safety certificate of eligibility. To obtain the certificate, the product needs to pass the strict physical and chemical tests of the safety standard. Only the product pass the tests can obtain the certificate.
Next, you can check the appearance of the power cord, focusing on three parts:

  • MARK:Regardless of the plug or the wire, a clear mark of the approvals are required. This is also the most direct way to judge whether the power cord meets safety standards.
  • METAL:The metal in the power cord need to show metallic luster. If it is black or foggy, it is very likely that the metal has been oxidized and cannot be used.
  • INSULATION:It can be judged based on smooth, tight surface, no roughness, and toughness when bending.


How to distinguish AC power cord in the application of electrical products ?

Power cord plays a vital role, although it is just an accessory for these machines and equipment. If the power cord is of poor quality, damaged or broken, it might cause that the electrical equipment cannot be used. Worst of all, electrical leakage will hurt people and short circuit might cause fire. Therefore, it is very important to choose an excellent and quality-guaranteed power cord.

What need to notice when using power cord?
  • Ensure the power cord has safety approvals.
  • Keep the area around the power cord dry, free of heat source, and free of conductive and flammable materials.
  • Keep the power cord stretched and flat.
  • Avoid using multiple high-power electrical products in the same socket at the same time.
  • If you feel very hot when touching the plug or wire, turn off the power immediately, unplug and stop using the electrical product.

What international regulations does Lian Dung pass ?

We are certified by ISO 14001 environmental regulations, we also strictly control the raw materials and components to comply with RoHS 2.0, REACH regulatory standards to ensure the safety of consumers to use our products.

In addition to environmental protection, we also support the Human Rights Movement and abide by the "conflict minerals" regulation to ensure that suppliers do not use minerals such as gold ( Au), tantalum (Ta), tungsten (W), cobalt (Co), tin (Sn), which mined in conflict areas of the Democratic Republic of the Congo or obtained through illegal smuggling.

Lian Dung also cares about working environment and rights of employees very much, so we pass the RBA standard (Responsible Business Alliance, formerly known as EICC); provide employees with a good and safe working environment, maintain communication between cadres and employees, and ensure that employees can obtain respect and fair treatment. We firmly believe that employees are the company's most important asset and the key to corporate development and sustainable operation. Therefore, we strictly abide by the RBA code of conduct.