Selection of 10kV cable branch box (1) Air insulation type with heat shrink material as the main material, which is an early product and has been phased out. (2) The rubber plastic jacket is used as the main material for the protective cable branch box. During long-term operation, internal interface separation and exposed end cracking are prone to occur, resulting in damage to insulation and sealing. Therefore, the development of this product is limited. (3) A sealed cable branch box with EPDM as the main material for cable joints. Its material is hard, while EPDM is a combustible material, which is prone to creepage or arcing and easy to burn. At the same time, its moisture-proof, waterproof and anti-aging properties are also weak, which cannot meet the requirements of long-term operation and maintenance free. EPDM is a toxic substance and also has adverse effects on environmental protection. (4) Live and pluggable cable joint type cable branch box. The power supply system in our country is powered by three-phase transformers, and it is impossible to simultaneously plug and unplug with power. This will cause serious deviation of the neutral point, forming a two-phase power supply in a short period of time, seriously causing large-scale power outages and unnecessary economic losses to the power supply and equipment. (5) Silicone rubber is the main material for cable joints and flood control type cable branch boxes. Its material is soft, with high elasticity, high density, full insulation, good material sealing performance, moisture resistance, waterproof, anti-aging, flame retardant, corona resistance, long-term operation and maintenance free. Due to the interference fit between silicone rubber and cables, the radial shrinkage uniformity is high, and internal creepage breakdown will not occur due to the separation of the internal interface caused by thermal expansion and cold shrinkage
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China