Smart home system integrated wiring construction specification and instrumentation

Installation specification and common construction tools

Installation and construction specification

(1) The integrated wiring system must be installed and constructed in accordance with the relevant provisions in the "Code for the Acceptance of Architectural and Building Complex Cabling System Projects" (GB/T50312-200).

(2) In case of content that is not included in the specification, it may be implemented in accordance with the "Code for the Design of Architectural Wiring Systems for Integrated Cabling Systems" (GB/T50311-2000).

(3) The construction of the trunk wiring subsystem of the integrated cabling is related to the local telephone network. Therefore, it is necessary to follow the regulations of the “Standard for Design of Local Telephone Network User Line Engineering” (YD5006-2003).

(4) The type and performance of the cables in the project, and the specifications and quality of the wiring components shall comply with the requirements of specifications or design documents such as "Building Communication Integrated Wiring System Part 1-3" (YD/T926, 1-3 -2001). .

(5) The wiring project can not affect the strength of the building structure, does not affect the aesthetic requirements of the interior decoration, does not reduce the function of other systems and impede the access to the channel.

(6) Technical personnel shall supervise and guide the construction site.

(7) The mark must be clear and orderly.

(8) Inspections must be performed on the completed route.

(9) Some spare lines should be laid.

(10) High and low voltage lines must be laid separately.

(11) The construction does not damage other ground or underground pipelines or structures.

Install electrician tools and instruments

Low pressure electroscope

Low-voltage electroscope, also known as electroscope, test pencil. According to its structure, it can be divided into pen type and screw type. It can be divided into two types: the fistula tube luminous indicator type and the digital display type.

The neon tube luminous inspecting electroscope consists of a neon tube, a resistor, a spring, a pen body and a pen tip.

2. Screw driver

Screw drivers, also known as screwdrivers, screwdrivers, and screws), are tools for tightening and disassembling screws. There are many styles and specifications of screw drivers, and they can be divided into a single shape and a cross shape according to the shape of the head.

The necessary slotted screwdrivers for electricians are 50mm and 150mm in size; the Phillips screwdrivers are designed to fasten or remove the Phillips screws.

The commonly used screw rotation has four specifications.

(1) No. 1 applies to screws with a diameter of 2.0 to 2.5 mm;

(2) No. 2 applies to 3-5mm screws;

(3) No. 3 applies to 6-8mm screws;

(4) No. 4 applies to 10 to 12 mm screws.

3. Wire cutters

Wire pliers have two kinds of insulated handle and bare handle. Insulated shank wire cutters for electrical special clamp (referred to as electrical clamp), commonly used are 15 0mm, 175mm, 200mm three specifications. Bare-handle wire cutters are disabled by electricians.

Commonly used wire cutters are mainly 6", 7", and 8", lin=25mm. According to Chinese average height 1.7m, 7in (175mm) is more suitable for use, 8in is more powerful, but slightly It is bulky and heavy, 6in is relatively small, but it is more laborious to cut a slightly thicker wire. Sin's is a delicate wire cutter.

4. Long nose pliers

Needle-nose pliers, also known as pliers, electric needle-nose pliers are generally made of 45 # steel, the category is medium carbon steel. The carbon content is 0.45%, and the toughness and hardness are all suitable.

The needle-nose pliers have a pointed head. There are two kinds of needle-nose pliers: bare handle and insulated handle. Naked shank nose pliers electrician disabled. Insulated shank nose pliers with a compressive strength of 500v, commonly used four kinds of specifications 130mm, 160mm, 180mm, 200mm. The grip is the same as that of an electrician's grip.

5. Diagonal pliers

Diagonal pliers function to cut off the main wire. Diagonal pliers are mainly used to cut the lead wires and spare parts of the components. They are also used to replace the ordinary shears.) Shear insulation bushings, nylon cable tie cards, etc.

The 9 ports of the diagonal pliers can be used to cut the rubber or plastic insulation of the flexible wire. The pliers) can also be used to cut wires and wires. When cutting 8 # galvanized iron wire, use the blade to cut back and forth several times around the surface, and then gently pull it, the wire will break. Mouthwash can also be used to cut harder wires such as wires and wires. Electricians commonly use 150mm, 1'75mm, 200mm and 250mm and other specifications.

6. Slipper pliers

Slip-on pliers, also known as pliers, are used to hold flat or cylindrical metal parts. Slip-on pliers can be used to clamp or pull jaws, and fine wires can also be cut off at the neck.

Due to its shape resembling a squid, the fish pliers are characterized by a two-piece adjustment position for the opening width of the jaws, which can be enlarged or reduced. It is mainly used for clamping round parts. It can also be used to replace small nuts and small bolts instead of wrenches. The back edge of the jaws can be used to cut off the wire, and it is used in the auto repair industry.

7. Elbow pliers

The elbow pliers are similar to the needle-nose pliers (without the edge) and Shiba is used in a narrow or concave work space. The main specifications are divided into shanks without plastic sleeves and with plastic sleeves. The length is 140mm, 160mm, 180mm, 200mm.

8. Stripping pliers

Wire strippers are special tools for exploiting the insulation of small diameter wire joints. When using, the length of wire insulation to be exploited shall be set with a ruler. Hold the handle with the right hand, put the wire into the corresponding groove with the left hand (larger than the diameter of the wire so as not to damage the wire), and use the right hand to hold the handle toward Within a grip, the insulation of the wire is cut open and automatically ejected.

Stripping pliers is one of the tools commonly used by interior electricians, motor repairers, and instrumentation electricians. Special power workers remove the surface insulation of the wire head.

The specifications of stripping pliers are 140mm, 160mm, 180mm (all are full length).

9. Impact drill and hammer

1) Impact drill

Impact drills can be used to perforate or crush natural stone or concrete. They are versatile because they can be used either in "single drill" mode or "impact drill" mode.

There are two kinds of impact mechanism: dog-type and ball-type. Ball-type impact drill consists of moving plate, fixed plate, steel ball and other components. The moving plate is connected with the main shaft through threads, and has 12 steel balls; the fixed plate is fixed on the housing by pins, and has 4 steel balls. Under the action of the thrust, 12 steel balls roll along 4 steel balls. The carbide drill bit can generate a rotary impact motion and can drill holes in brittle materials such as bricks, blocks, and concrete. Take off the nail, so that the plate rotates with the drive plate, no impact, can be used for ordinary impact drilling.

2) Hammer

Electric hammers are a class of electric drills used primarily to drill holes in concrete, floors, brick walls and stone. There are also multi-function hammers, adjusted to the appropriate "range" with the appropriate drill, can replace ordinary electric drill, electric pick use.

The hammer is based on the electric drill. It adds a piston driven by a motor and has a crankshaft connecting rod. The air is reciprocally compressed in a cylinder, so that the air pressure in the cylinder changes periodically. The changing air pressure drives the hammer in the cylinder to reciprocate. The top of the drill hits the drill as if it were a hammer, so it is called a hammer.

As the drill bit of the hammer rotates, it also generates a rapid rhythm movement (frequent impact) along the direction of the drill pipe, so that the rotary hammer drill bit is in a non-directional working state, that is, it only rotates without impact, and only impact does not rotate. Both impact and turn.

(1) Personal protection when using a hammer should pay attention to the following aspects.

1 The operator should wear protective glasses to protect the eyes, and wear a protective mask when face up.

2 Plug earplugs during long-term operation to reduce noise.

8 The drill is in a hot state after long-term operation, and should be burned when replacing.

4 Should use the side handle, two-hand operation, to prevent spraining the arm when the reaction force blocking.

5 When standing on a ladder or working at a height, measures should be taken to fall from a height, and the ladder should be supported by ground personnel.

(2) Inspection before operation shall meet the following requirements.

1 There is no crack or damage in the case or handle.

2 The cable cords and plugs shall be intact, the switch shall be in normal operation, and the connection to the protection connection shall be correct, firm and reliable.

8 The protective cover of each department is complete and firm. Shen, gas protection device is reliable.

10. Clamp ammeter

In general, when using a conventional ammeter to measure the current, it is necessary to cut off the circuit to connect the current meter or the current transformer primary coil to the circuit under test. When using a clamp ammeter to measure, you can measure without cutting the circuit.

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