Solution to the branch problem of low voltage power cable
InLV power cableIn the current production activities, the use of electricity is very important to everyone, and the use of low-voltage power cables is also very important to everyone. Let's talk about that. Let everyone better understand the low voltage power cable.
WhenLV power cableWhen it is necessary to directly supply power to two or more power receiving terminals, the following three situations usually occur:
Unit branch connections.
Set LV power cable branch box.
The low voltage power cable surrounds the one or more powered terminals.
These three methods have their own advantages and disadvantages, should be selected according to their own needs. In short, the branch connector of the device is more economical, but it is inconvenient to operate and maintain;LV power cableThe ring is more sensitive in operation and easier to repair, but it requires a certain length of cable, which requires a large investment. The advantages and disadvantages of the branch box are between the two.
LV power cableThe branch box is set on the ground, and the low-voltage power cable is introduced into the low-voltage power cable box before branching. The cable loop-in method actually constitutes a loop power supply to the users, that is, a dual power supply is provided to each user. Branch connectors are not as easy to disassemble and assemble as branch boxes. Compared with ordinary cable intermediate connectors, there are some special requirements for the core wire connection process and the sealing process of the outer jacket.
in recent years,LV power cableThe production and use of electricity became active, especially in high-rise buildings in the south, for the supply of electricity. Some branch cables were used and installed in the vertical corridor of the elevator.
The color of the insulated core of the low voltage power cable wire shall be the color recommend by the specification, especially the yellow/green core. Such wires are commonly used in power cords for electrical products. The special two-color wire of this low-voltage power cable is dedicated to grounding.
What are the main points of purchasing wires and cables? Let's take a look. As the main carrier of power transmission, wire and cable are widely used in electrical equipment, lighting circuits, household appliances, etc. Its quality directly affects the quality of the project and the safety of consumers' lives and property. There are many wire varieties on the market, and appropriate wires should be used according to their own power load.
What are the precautions for wires and cables? Let's take a look. Common cable faults: wire surface markings-according to national standards, the wire surface should have continuous markings of the manufacturer's name, product model and rated voltage. This helps to find the manufacturing plant in time when there is a problem during the use of the wire, and consumers should pay attention to this when buying the wire.
There are many kinds of wire and cable products for electrical equipment on the market, which are difficult for ordinary consumers to distinguish. So what are the main categories of wire and cable products? What are the product naming principles of wire and cable? The editor brings you a brief understanding of relevant content knowledge.
The wires and cables for electrical equipment are mainly used for internal or external connection of electrical equipment, low-voltage transmission lines and various electrical signal transmission lines. Generally speaking, except for power cables, communication cables and magnet wires, most insulated wires and cables are classified as wires and cables for electrical equipment.
Electrical equipment with wire and cable is a large class of wire and cable products, a wide range of applications, many varieties, many series, large output, process type complex. The rated voltage of wires and cables for electrical equipment is low, and the working voltage is 450/750v and below, which is not more than 0.6/1kv. The working voltage of signal and instrument cables is usually 300/500v and below. The ampacity of the cable is determined according to the requirements of the cable.
Low voltage power cable winter pay attention to matters? As the weather gets colder and colder, manufacturers of low-voltage power cables usually become more difficult, which brings inconvenience to construction. Here are some precautions for winter construction. Let us take a brief look.