In normal life, people have less opportunity to access the cable transfer box. The cable transfer box is actually a type of crossover box. It is mainly used in electrical equipment in the construction and industry. We can usually see them in the small corners of the road. Its installation must comply with the city's regulations, and it must not hinder traffic. It cannot affect the appearance of the city. But to remind the cable transfer box operation is not very understanding, do not casually approach or use the cable transfer box. Then, what are the technical specifications of the cable transfer box ? Next we will take a detailed look at the relevant knowledge of the cable transfer box specification .
Cable transfer box model
Generally, we use 300 pairs, 600 pairs, 1200 pairs, 2400 pairs, 3200 pairs of transfer box jumper adopts rotating card-type wiring, and seal with metal grease on the metal clip, so it is not only reliable and durable. With no stripping, easy operation and overhauling, the arrangement of the terminals in the box, with 25 pairs as a basic unit, is consistent with the basic unit of the local telephone cable, and is marked with numbers on the terminals to facilitate construction and maintenance. The structure, arrangement and installation dimensions of the wiring module are exactly the same as those of the 3M company and can be mutually common.
Cable transfer box price
1. Rui Liang Communication Rotary Card Telephone Cable Transfer Box | Outdoor Waterproof Telephone Transfer Box | Phone 486 Yuan
2. Ruiliang communication room mounted 20 pairs of telephone distribution box double sided screw cable transfer box 69 yuan
3. Outdoor 100 pairs of telephone cables Communication wiring transfer box Wall-mounted reinforced cable 145 yuan
Note: This price is for reference only! Due to geographical differences, of course, the price will be different. For more details on the prices, please refer to the local distributors!
Cable transfer box function
The trunk cable and distribution cable of the cable transfer box are all at the end of the terminal block in the transfer box. The main distribution cable from the computer room distribution frame (MDF) goes to the cable transfer box and is terminated at the terminal board of the cable transfer box. The jumper cable (main jump) is used to distribute the cables. The distribution cable is in the distribution box and the distribution box. The subscriber line goes to the subscriber's home splitter, and the splitter splits out two lines, one RJ45 interface cable (commonly known as the network cable) and the other RJ11 interface cable (the telephone line), so that a user's broadband and narrowband (telephony) services are opened. Now. In general, the function of the jumper is to jump the trunk cable from the customer distribution cable to the equipment room, and the broadband or telephone service can be opened. The cable transfer box is mainly used for “Tâ€-shaped branch line connection in the construction and industrial electrical equipment when the cable cannot be cut off.
Cable transfer box technical characteristics
1. When the cable is not cut off, the trunk line is divided, the configuration is flexible, time, labor and cost are saved, and it is welcomed by the construction team.
2, the installation is very convenient, without special tools, without bare copper end (wiring nose) to achieve a reliable connection of bare conductors, copper-aluminum transition;
3, all electrical performance indicators are in line with IEC international standards, excellent electrical conductivity, low resistance loss, voltage drop, contact voltage drop is only 1.98mV, is IEC standard 2/3;
4, strong heat resistance and impact resistance, can withstand 120A/mm2 short-circuit strength test, insulation base is made of non-combustion materials, outstanding aging resistance;, compared with plug-in busway and prefabricated branch cable, Save 50% to 70% of engineering costs.
Cable transfer box specification
A: The main technical requirements and parameters
1: Scope of application: It is selected for the connection of the city's communication cable and distribution cable, which can be mounted on the wall, overhead, floor, indoor and outdoor. The main technical performance indicators should meet the relevant standards for the YD/T611-93 communication cable transfer box.
2. The transfer box consists of a double-sided screw card connection module, a row frame, a base, a cable clamp, and a rubber waterproof strip.
3. Applicable environment:
(1) Ambient temperature: During operation -55 to +55°C
(2) Relative humidity ≤ 95%
(3) Atmospheric pressure: 70 to 106 kpa
4. Insulation resistance between terminals that are not conductive and between terminals and ground
≥ 5×104
MΩ.
5. Insulation resistance between terminal and ground which are not conductive after moisture test
≥ 5×104MΩ.
6. Withstanding voltage of 500V (50HZ) for one minute, there is no breakdown between any terminals that do not conduct each other, and there is no arcing phenomenon.
7. Can withstand the minimum diameter of the wire 0.32mm, the maximum diameter of 0.8mm, the minimum diameter of the insulation layer
0.7mm, 200 repeats of the wire in the range of maximum diameter 1.2mm, and its contact point is still in line with the successor module clamping wire strength ≥ 24N kg. 8. The contact resistance between the wire and connecting terminal is less than 3×10-3Ω.
Two: installation method
1. The cable runs through the rubber seal on the bottom plate and then into the cable clamp. Then the cable is stripped.
2. Wiring method: If you need to connect the wire, just pass the wire through the plastic end cap into the wire hole, and then use a screwdriver to rotate the plastic cover by 90° to complete the connection. (See the figure.) Do not use too much force when rotating. If the plastic end cap is damaged, it can be replaced. The entire part does not need to be replaced. Because it continues in the plastic end cap, it is not exposed, and there is moisture sealant protection, and no corrosion will occur.
3. The office line is installed on the rear terminal assembly of the module on the column frame, first loosen the lower connection piece on the left side of the column frame, and turn the module behind the column frame to the front, and the reverse cable clamp is connected to the separate cable line to the chain line ring. Move upwards and fix it by each module. Until the first pair of crazy combinations, the terminal combinations are arranged in five pairs from right to left. Each five pairs are numbered until one hundred pairs and each one is a square. .
4. The jumper shall be placed in the original position after the office line is connected. From the bottom to the top, the jumper connected to the one terminal jumps to the other terminal through the string loop.
5. Remove the thread: If you need to remove the connected jumper, use a screwdriver to rotate the plastic end cap 90° to the left to easily pull the thread out.
6. Test: Insert the test needle of the single-pair tester into the end cap to fix it. It can be tested by various instruments.
Third, packaging
1. The packaging of the cable transfer box is packaged according to the product specifications. It has waterproof and shockproof measures. The accessories are put in the box (bag) and then put into the wooden box. The whole machine is sealed with a plastic bag. The box is printed with rain, moisture, shock and Direction sign
2. The appearance of the wooden box shall indicate the name of the manufacturer, product name, model number, quantity, and date of manufacture.
Editor's summary: The above is the detailed content of the cable transfer box technical specifications, in addition, in fact, we must pay attention to good moisture specifications, can not be installed in the easily flooded depression and serious corrosion, flammable and explosive factories, which is very We must pay attention to the issues and hope that everyone must pay attention to avoid unnecessary accidents.
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