Ways to Pick a Wire Or Cable
สายคอนโทรล YSLY-JZ เป็นชื่อกลางของสายคอนโทรลรุ่นหนึ่งที่นิยมใช้กันในยุโรป ลักษณะเหมือนที่เรียกสายไฟ VCT โครงสร้างของสาย YSLY-JZ ประกอบด้วย
1. ตัวนำทองแดงเปลือยเส้นฝอยละเอียด Class 5 ความละเอียด/จำนวนเส้นฝอย เท่ากับ VCT เมื่อขนาดของตัวนำไฟฟ้าเท่ากัน
2. ฉนวนภายในทำจาก PVC เป็นสีดำมาร์คด้วยตัวเลข
3. ฉนวนภายนอกทำจาก PVC มีสีเทา หรือ ดำ (สั่งผลิตพิเศษ)
(firmenpresse) - When you are about to buy wire or cable for the first time, and even when you've got bought it inside the past, you may find the process daunting. Just after all, most distributors stock a huge number of wire and cable products. Your application may well require ribbon cable, but which precise ribbon cable ought to you acquire? Having possibilities is important, but with so many possibilities, decision-making can develop into overwhelming.
Do you understand what questions to ask? Before starting a search, equip oneself with all the ideal information. Background data combined with basic preparation can offer you some command throughout the getting process. Inside the post, "Specifying High-Performance Cables: The Devil Is In the Facts," by Alpha Wire Company, they evaluate four key concerns to become regarded. They are cable shielding, flexibility, chemical resistance, and temperature variety.
Shielding
When getting cable, be sure to explore cable shielding. Shielding guarantees that the electrical process runs smoothly. An engineer will tell you shielding minimizes difficulties of signal exit or entrance triggered by interference. Forms presented contain braid, foil, spiral, or even a combination braid/foil shield. Each form has positive aspects and disadvantages:
Foil Shields:
Uses: CATV, MATV, Video, computer I/O cables
Advantages: 100% cable coverage, low weight and low expense
Disadvantages: High DC resistance and reduced mechanical strength
Braid Shields:
Uses: Computers to terminate interconnect for process or control applications
Benefits: Good structural integrity, flexibility and flex life Disadvantages: Will not present full coverage, heavy
Spiral Shield:
Uses: Microphone, audio cables and retractile cords
Advantages: Good flexibility and flex life
Disadvantages: Not productive above audio frequency variety
Mixture Shields:
Uses: Video, CATV, MATV, networking, laptop I/O cables
Benefits: 100% foil coverage, powerful and low resistance
Disadvantages: Higher price than other shields
Chemical Resistance
An engineer will let you know that electrical cables possess numerous levels of chemical resistance, but there could be additional to it. You'll want to know which chemical compounds could present a potential trouble in the entire lifespan of the cable. Also, look at that oils and corrosive chemical vapors or liquids could potentially enter into the cable connections. Any form of chemical intrusion could result in cable failure. You may require to add additional sealing to stop moisture permeation.
Temperature
Temperature variety is a different vital factor in the mix of issues. What temperatures will your cable need to withstand to become efficient? You might discover that a cable possesses each of the essential electrical capabilities required for intense temperatures, but will it have the ability to adapt to the physical demands related with that temperature?
Flexibility and Flex
A flexible cable can make installation and troubleshooting considerably much easier. However, did you know that "flexing" is actually a unique situation that needs to be addressed? As a result of nature of several manufacturing applications, cables may well encounter continual flexing. Certain cables are built far better for this than other individuals.
Conclusion
There is a lot more to getting the perfect cable than meets the eye. Do not be intimidated by options. A cable exists for just about each and every atmosphere and application if you know what to look for. Spend some time asking the right queries and take into consideration every angle.
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