CN2043782U

CN2043782U - Insulated plastic conducting wire with ground wire

Info

Publication number: CN2043782U
Application number: CN 88218972
Authority: CN
Inventors: 张荣锦; 李克明
Original assignee: HUAXI ELECTRIC CO
Current assignee: HUAXI ELECTRIC CO
Priority date: 1988-10-22
Filing date: 1988-10-22
Publication date: 1989-08-30

Abstract

The utility model relates to an insulated plastic conducting wire with a ground wire. The inner of an insulated plastic body is provided with three conducting electricity wire cores which are each other isolated. The conducting electricity wire cores which are used ground wire cores are copper wires whose cross sectional areas are more than 1 mm+[2]. Other conducting electricity wire cores are copper or aluminum wires. The insulated plastic body can be divided into an insulated layer and a sheath. The electricity wire is in a flat type, a triangle type and a three-circle connecting by a separation mode type, a circle type and a belt, groove and strip type. The insulated plastic conducting wire with a ground wire is used for coating by a visible mode in a room, and a plastic groove plate can not be added. The safety of using electricity is ensured by the utility model mode. The utility model has the advantages of low cost, convenient construction and shape configuration.

Description

Insulated plastic conducting wire with ground wire

The utility model is relevant with essential electronic element, and is especially relevant with house wire.

Traditional house wire is that live wire and zero line are formed by two working power lines, and an arrangement is fixed in the plastic cleat during installation, does not have earthy lead.And household electrical appliance, instrument and meter, power set and lighting device all require the electrical appliance earthing of casing, to guarantee personal safety and the accidental loss of avoiding property.Because at the indoor earth lead of not arranging, people usually electrical equipment is required the tap of ground connection empty need not, promptly be provided with ground connection.Or the earth connection of electrical equipment directly received on the working zero line of power supply.Or receive on the running water pipe or on the outdoor iron prop at the indoor wire that draws voluntarily.First kind of processing method, electrical equipment is provided with ground connection.In case the insulation of electrical equipment is damaged, produce electric leakage or induced potential, cause outer casing electrification to be hurted sb.'s feelings.Second kind of processing method then has potential danger.Live wire in single phase circuit, zero line are equipped with unified sign, and the slot of socket do not indicate yet, if there is the people on switchboard, to rewire, when changing fuse, pan position mutually, will make electric appliance casing charged, serious accident takes place.The third processing method oneself is led the ground wire that connects, and influences indoor attractive in appearancely, and simultaneously bolt is to violate the Electrical Safety rules on water pipe.The sort of situation no matter, when cubicle switch is received on the zero line on the power line or during zero line break, its danger is serious.

The purpose of this utility model provides a kind of triple core wire that has earth connection, guarantees the safety utilization of electric power of electrical equipment, and can change indoor laying wires and use plastic cleat, install loaded down with trivial details, the shortcoming that expense is high.

The utility model is made of three isolated each other conductive cores of parcel in the plastic insulation.Conductive cores can have identification mark.Sectional area as the wire stylet of ground wire is not less than 1mm ²Copper cash.Can be according to its position or its sectional area size identification.Other conductor wire core is copper or aluminum steel.Can be identified as live wire or zero line according to the color of insulator on every side.

Plastic insulation of the present utility model is made up of insulating barrier and sheath, and insulating barrier parcel removes other two conductor wire cores of ground core, and insulating barrier is extruded in by polyvinyl chloride insulation level plastics and forms on metal-cored.Its look can be red-Huang, and is red-green, red-Lan.Sheath is pvc sheath level plastics, can be white, is positioned at outside the insulating barrier.The cross section of electric wire can be platypelloid type, triangular form, and three gardens are connecting-type, trough of belt stripe shape or garden shape at interval.Metal-cored position that fixture can be arranged on the insulator.Sheath can contain fire retardant.

In general, for capacity little electrical equipment such as household electrical appliance (the separate unit capacity is all less than 2.42KW or 4.84KW), adopting zero connection protection is the same with the ground protection safe effect.But, adopt zero connection protection good except being strict with power supply neutral ground, outside the zero line iterative earthing, the most important thing is, in the equipment with same transformer-supplied in low voltage electric network, disapprove a part and use zero connection protection, and another part ground protection.This is difficult to nature to numerous users and accomplishes.Therefore some electrical networks explicitly call for the employing ground protection.Throw for the single phase power supply that uses earth leakage protective device and to be equipped with, have only the employing ground protection, and the ground protection line to be connected on separately on the shell and do not pass earth leakage protective device and could guarantee safety utilization of electric power.Along with popularizing of household electrical appliance, the use of earth leakage protective device is no matter single-phase or three phase supply equipment adopts ground protection the most suitable.Ground wire of the present utility model promptly is for ground protection.All the other two wires one are live wire, and one is zero line.The utility model is used for indoor bright number, does not need to add in addition plastic cleat, can be directly installs with nail or sticks with glue or ply-yarn drill is installed along laying the position.The utility model price is lower, and easy construction is elegant in appearance.Lay three independent locking wires with frid and compare, can save 800 yuan of frid valencys for every kilometer.

Following is accompanying drawing of the present utility model

Fig. 1 is a cross-sectional view of the present utility model

Fig. 2 is the vertical view of Fig. 1

Fig. 3 is second kind of the present utility model and implements illustration

Fig. 4 is the third enforcement illustration of the utility model

Fig. 5 is the 4th kind of the present utility model and implements illustration

Fig. 6 is the 5th kind of the present utility model and implements illustration

Fig. 7 is the 6th kind of the present utility model and implements illustration

Fig. 8 is the 7th kind of the present utility model and implements illustration

Following is embodiment of the present utility model:

The utility model is 1.78 copper core 1 by diameter, and diameter is 1.78 copper core 2, and diameter is 1.38 copper core 3, insulating barrier 4,5, and sheath 6 is formed.Copper core 1 is a live wire, and copper core 2 is a zero line, and copper core 3 is a ground wire.Insulating barrier is that PVC-11 type polyvinyl chloride is extruded on the core 1,2.Thickness of insulating layer is 0.80mm.Insulating barrier 4 is red, and insulating barrier 5 is yellow.Sheath 6 materials are white PVC-SI type polyvinyl chloride.Jacket thickness is 1mm.Insulation resistance between wire core and core and the ground connection core should not be lower than 10N/KN in the time of+20 ℃.The utility model lopping or the supply of material of one-tenth dish, every circle length is 100 meters.

During indoor installation the utility model, with the core of insulating barrier parcel with adopt power line outward and link to each other.The ground core is connected on the earth electrode of building.Three sockets of electrical equipment book as directed connect.

Claims

The plastic insulated conductor that 1, ground wire is arranged is characterized in that having in the plastic insulation three each other isolated conductor wire cores, and conductor wire core can have identification mark, is that cross-sectional area is not less than 1mm as the conductor wire core of ground core ²Copper cash, other conductor wire core is copper or aluminum steel.
2, the described plastic insulated conductor that ground wire is arranged of claim 1, it is characterized in that said insulator is made up of insulating barrier and sheath, the insulating barrier parcel removes other two conductor wire cores of ground core, lead is platypelloid type or triangle or three gardens interval connecting-type or trough of belt stripe shape or garden type, lead can have the position of fixture, insulating barrier is extruded on the conductor wire core by polyvinyl chloride insulation level plastics and forms, and sheath is that pvc sheath level plastics are positioned at outside the insulating barrier, and sheath can contain fire retardant.