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作者:
发布时间: 2017 - 01 - 18
点击次数: 31
Cable is divided into power cables, control cables, signal cables (communication cables)The control cable is designed for centralized control of power equipment and is equipped with a variety of automatic and wire-control commands to operate the circuit cable! Its control is to indicate that its role is dedicated to non-load cable for transmission control commands!For example, from the control room to the equipment field terminal control cable! From the crane control room to the cart, car, crane control cable!
作者:
发布时间: 2017 - 01 - 18
点击次数: 29
Generally refers to the classification of flame retardant cablesBut whenGA-306.1-2007 "Flame-retardant and fire-resistant cables: plastic insulation and fire-resistant cable classification and requirements" is divided into: A, B, C;And the flame retardant level is divided into four, each class according to flame retardant type is divided into A class, B class, C class, flame retardant level mark are:Class A Class: ΙA Class II Class A: ΠA; Class 3 Class A: IIIA; Class 4 Class A: IVAClass B Class: ΙB Class 2 Class B: ΠB; Class 3 Class B: IIIB; Class 4 Class B: IVBClass C Class: ΙC Class 2 Class C: ΠC; Class 3 Class C: IIIC; Class 4 Class C: IVC
作者:
发布时间: 2017 - 01 - 18
点击次数: 19
The symbols in the power cable model are as shown in the following table. Commonly used power cables according to their insulation and jacket layer of different, mainly in the following categories: ① oil and paper insulation lead (or aluminum) power cables, such as ZQ02 type, ZLL32 type; ② do not drip oil impregnated paper insulated power cables, such as ZQD type, ZLQD12 type; ③ PVC insulated PVC sheathed power cable, such as VV29 type, VLV59 type; ④ cross-linked PVC insulated polyethylene sheathed power cables, such as YJY type, YJLY type; ⑤ cross-linked polyethylene insulated PVC sheathed power cables, such as YJV type, YJLV22 type; ⑥ rubber insulated power cables, such as XLV type, XQZ type.
作者:
发布时间: 2017 - 01 - 18
点击次数: 4
BTTVZ with a layer of jacket, BTTZ no, the cable features: support Ming Tu (no bridge), good heat dissipation, carrying capacity, overload, the normal working temperature up to 250 ℃Because BTTZ only copper jacket, laying in some special places not suitable for ...For example: chemical sites (anti-corrosion), sea water (anti-corrosion), Ming Fu set up contact (anti-burn)
作者:
发布时间: 2017 - 01 - 18
点击次数: 3
1, the total number of tubes within the number of not more than 8The same circuit to go the same electric wire tube, the total number of tubes within the number of not more than 8, according to the provisions of a tube up to 8 wires, although the reason is very simple, but often there will be decoration master forget. If the decoration in the discovery of more than the phenomenon, to promptly pointed out.2, power lines and communication lines shall not be inserted into the same rootTube within the home of the distribution box generally have two, that is, for the use of electrical appliances for the socket and the TV, the network of weak electrical box. These two wires are different and can not be placed in the same pipe.3, strong and weak line horizontal distance of not less than 50cmStron...
作者:
发布时间: 2017 - 01 - 18
点击次数: 7
Although the electric wire is a small responsibility, it is indispensable in the home decoration of the basic building materials, wire quality clearance, directly related to the home improvement of the circuit. Need to know a lot of fire, electric shock accidents are due to poor quality of the wire and line caused. Therefore, in the home decoration, the choice of wire must not be careless.With the substantial increase in living standards and the increase in household appliances, people's growing demand for electricity, the use of the wire also increased. Although the electric wire is a small responsibility, it is indispensable in the home decoration of the basic building materials, wire quality clearance, directly related to the home improvement of the circuit. Need to know a lot of fire, ...
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