Hard Drive Selection Guide With the popularization of computers, the capacity of computer hard disks has begun to become more and more difficult. Therefore, more people have begun to choose mobile hard disks as an extension of computer hard disks, and it is also very convenient to carry and back up important data. So what should pay attention to buying a good mobile hard disk?

For most people, the two most important issues are capacity and speed.

1. See capacity Since the mobile hard disk is an expansion of the hard disk, storage capacity is naturally the top priority. Of course, it is not without brains to buy large capacity. The capacity is still based on the user's actual storage needs, fully taking into account the product's cost performance, otherwise it is simply wasting money.

2. The speed of the hard disk is also an important aspect that we have to look at. If the transmission rate is too slow, it will not only affect the office efficiency, but also damage the battery of the computer and reduce the service life of the battery. The transmission rate is mainly related to the interface of the mobile hard disk. Now most manufacturers use the most advanced USB3.0, and the transmission rate can reach 100Mbps. Such as Seagate, Western Digital and other brands.

3. Security Since the mobile hard disk is a data storage device, the security of data should be guaranteed. Therefore, we must try to buy mobile hard disk with encryption technology. Then encryption technology is divided into software encryption and hardware encryption. The software encryption interface is complicated and easy to crack. Therefore, we have better choose a hardware-encrypted mobile hard disk and encrypt it with an electronic key to ensure data security.

4. Appearance and volume Since it is a mobile hard disk, of course, the main principle of light and easy to carry. The current mainstream market has 1.8-inch and 2.5-inch products of two sizes. Both are free to place, easy to carry, and the rest is to look at your own hobby.

5. After-sales service Since it is an electronic product, mobile hard disks are inevitably having a problem and are easily damaged. Therefore, it is recommended to buy a brand of mobile hard disk, because the brand manufacturers are deeply rooted in people's minds, generally have two to three years of after-sales service and technical support, trustworthy.

High-voltage 110~220KV XLPE Cable

A. Brief introduction of the 110~220KV XLPE high-voltage cable products

1. The cross-linkage PE insulated and wrinkled aluminum wrapper waterproof PVC Sheathed Power Cable.

Type: YJLW02/YJLLW02

Specification: 240mm²--300mm²

Voltage: 110--220KV

Usage: Suitable for damp areas and the places with a lower underground water level and to be used underground, in tunnels or pipes. Such cables bear a bigger pulling force and pressure.

2. The cross-linkage PE insulated and wrinkled aluminum wrapper waterproof PE sheathed power cable.

Type: YJLW02/YJLLW02

Specification: 240mm²--300mm²

Voltage: 110--220KV

Usage: Suitable for damp areas and the places with a lower underground water level and to be used underground, in tunnels or pipes. Such cables bear a bigger pulling force and pressure.

B. Specific property for usage of 110KV~220KV XLPE high-voltage cable

1. Cable`s conductor highest working temperature is allowed up to 90℃, and overload when meet an emergency is 130℃ ,When short circuit (in ≤5 seconds) the highest temperature is 250℃

2. When installing or laying cable, the ambient temperature should be less than -20℃, and have to give a preheat to cable.

3. The minimum bending diameter:

After laying: 30D0

During laying: 40D0

4. Allowed biggest axial traction force to outer diameter when laying cable (not consider the radial lateral

pressure at bent section) T=K×core NO. ×section (kg), in formula, the coefficient K value should be: the copper core get 7, the aluminum core get 4.

5. Allowed biggest lateral-press P, when cable is being bent

The single core cable is required P≤500kg/m.

P=T/R (T is indicated axial traction force; R is indicated radius of bent-wheel), Knowing from above formula, as the traction force is made up by length and weight of cable. So it lets P to applying requirement as above. Then the diameter of bent-wheel should be widened.

6. Cable laying is not being restricted by drop.

Of course ,except 110~220KV XLPE Cable,we have 500kv XLPE Cable,230kv XLPE Cable, 750v Cable , 132kv Cable , 110kv Cable ect.




High Voltage Power Cable

Aluminium Corrugated Cable,Copper Wire Screened Cable,500kv XLPE Cable,230kv XLPE Cable,750v Cable,132kv Cable,110kv Cable

Huayuan Gaoke Cable Co.,Ltd. , https://www.bjhygkcable.com

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