Single wire requirement for copper wire in power cord
1.1 Requirements: The diameter of the copper wire of the power cord should meet the process requirements.
1.2 Inspection method: The diameter of the copper single wire is detected by a lever micrometer with a scale of 0 to 25 mm and a diameter of 0.01 mm. 2 printing rubbing
2.1 Requirements: The printing should be clear and firm, and the writing should still be legible after the abrasion resistance test.
2.2 Inspection method: After gently wiping with a group of soaked cotton or a cotton cloth for 10 times, visual inspection.
3.3 Insulation thickness, sheath thickness
3.1 Requirements: The insulation thickness and sheath thickness should meet the requirements of the process card.
3.2 Inspection method: Cut the insulation and sheath into thin slices and measure them in the projector.
4 voltage test
a SPT, SJT, SVT type finished wire and cable power cord plug should be subjected to 1500V 50HZ AC voltage test for 1min without breakdown phenomenon;
b ST type 18AWG ~ 15AWG finished cable should be subjected to 2000V 50HZ AC voltage test 14AWG ~ 10AWG finished cable should be subjected to 3000V50HZ AC voltage test, the time is 1min., no breakdown phenomenon;
c 227IEC02 (RV) type cable shall be subjected to 2500V 50HZ AC voltage test for 5 min without breakdown phenomenon;
d Other types of finished wire and cable shall be subjected to 2000V 50HZ AC voltage test for 5 minutes without breakdown phenomenon;
3.4.2 Inspection method: The test shall be carried out according to the provisions of Article 3 of GB5023.2 "PVC insulated cables of rated voltage 450/750V and below Part 2: Test methods".
Tongyuan power supply mainly operates: power cord; plug; connector; online switch; wire; halogen-free plug; halogen-free power cord; South Africa plug; Indonesian plug;
Tongyuan Power Connection Co., Ltd. Taiwan Company was established in 1983 and established a factory in the mainland in 1997. The company now has two manufacturing plants, covering an area of 25,000 square meters, 50 million yuan in fixed assets, and annual manufacturing capacity of 200 million.
Main products: national security power cord, wire and cable, power cord plug, national certification switch UL / CA certification, VDE certification products, South Korea KC certification, Japan PSE certification, CCC product certification
How can I make the power cord not damaged?