无锡某工程的电气部分英文版

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Section 3 Electric Works

1.
Technological process Diagram

2.
Quality Control Point and Control Measure on Electric Installation

Sub-item	Quality Control Point	Quality Control Measure	Remark
9 e( n) K) ~/ a. ]4 {Construction Preparation	Material plan, material review and approval, and construction program	Work out carefully
Open–pipe installation	The position and elevation are correct, and the grounding is good	Draw integrated drawing and detail of pipeline grounding
Installation on crane span structure slot	Correct level, installation on hanger frame, fire protection treatment of through-wall and floor, clearance with other special pipeline	Draw integrated drawing, installation drawing of hanger frame, and detail of fire protection treatment
Threading distribution	Wiring correct error, conducting wire with rinsing tin, conducting wire with damage	Strictly carry out wiring drawing, rinsing tin, pay attention to protecting the wire when threading
Cable lay	Straight cable, firm fixing, cable bending, and identification	Implement equirements relating to drawing and specification
Soldered dot	Ground resistance at welded position, and the surface at welded point is smooth and full	Test the ground resistance of welded position after finishing the welding.
Appliance installation	The position is correct and installed firmly, the appearance is good.	Arrange the plan installation according to electromechanical drawn integration diagram and surface appliance
Debugging	Operating stability, reliability, and insulating shake-measure in system	Work out the special debugging plan

3. Key Working Procedure and Quality Control Guarantee Measure

1.Open Lay of Galvanized Steel Pipe

All open-lay steel pipes in the project adopt the open-lay technology of galvanized steel pipe.

1) Technological process：

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(2) The distributing pipe in suspended ceilings that can be entered into and shaft passages that are not closed is open. Both its pipeline direction and support fixture should construct according to requirements of open distributing pipes.

(3) Use the simmering method to simmer pipes with a necessary bend according to design requirements. Pipes that the pipe diameter is less than 20mm may adopt a palm simmer pipe machine. Pipes that the pipe diameter is more than 25mm may use a hydraulic simmer pipe machine (or special simmer pipe machine). The concavity at simmering bends should accord with specifications and regulations.

(4) Broken pipes adopt a hacksaw or a saw without teeth. The size of pipe needing to cut should be exact. Put pipes on the center of pressure jaw, and keep fractures even. At fracture, fill the inner or outer of pipe orifice smoothly without any burr. The scrap iron in pipe should be cleaned clearly.

(5) The mantle fiber of pipe may adopt a mental fiber machine. Select corresponding dies according to the outer diameter and of pipe the pitch. Clamp the pipes firmly by using a vice or planer pressing pliers. Then cover the capstan on pipe ends. Exert evenly not too strongly, and pour the cooling fluid on it while covering. The clasp is not in disorder and cleaned clearly. After pipes are hoped well, pipe orifices should be aimed at accurately. And the exposed clasp should not be too long.

(6) Galvanized steel pipes must adopt harness cord pipe hoops to connect. Do not adopt fusion-welding bridge ground wires. Use the special ground card at two ends of joints to fix and bridge the ground wires. The connection of galvanized steel pipes is shown in the following figure.

(7) Lay pipelines strictly according to requirements in drawing. Both coordinates and levels are accurate and the pipelines should be fixed firmly. The pipe lay is asked to add a terminal box according to specification requirements. The joint of pipe hoop adopts special ground wire cards to bridge the ground wire. Spools are put into boxes. And holes and orifices are asked to pre-leave according to design requirements. Only after boxes have been stable, carry out the next working procedure. A protective orifice should be added in time at the position that needs to add.

(8) Lay steel pipes through settlement joints along with wall, and carry out laying according to the following figure.

Installing Method of Galvanized Steel Pipe openly Laying Settlement Joints
	Symbol Explanation1- Built-in terminal box2- Expansion joint3-Ground wire4- Metal hose5- Soldering

(9) Pipeline fixture and ground wire are shown in the following figure.

Pipeline Fixture and Ground Wire
	Symbol Explanation:1- Galvanized steel pipe2- Ground card3- Bridge ground wire4- Passing box5- Fixed screw in ground wire6- Harness cord pipe hoop

(10) The pipeline astillen is shown as in the following figure：

Pipeline Astillen
	Symbol Explanation1- Plastic expanding bolt2- Self-tapping bolt3- Wall-away pipe strap4- Galvanized steel pipe5- Ground pipe strap6- Ground wire7- Union joint8- Passing box

2. In-pipe Threading

(1) Technological Process：

Tube clearing 4 R2 G# }# D8 y3 u, c

Protection mouth wearing

Wiring

Lead tie-in 7 ?* u$ O' I+ X$ k+ B

Line checking and insulation testing

4 K$ K# u3 z+ B

(2) Select Conducting Wires：

1) Select the specification and model of conducting wire according to design requirements.

2) Sampling check on insulating layer: sample to check the thickness of insulating layer and the diameter of round wire core at the spot according to manufacturing standards. The error of wire core should not be more than 1% of the equivalent diameter. The thickness of insulating layer in normal BV insulated wires should not be less than the regulations in the following table.

Serial No.	1	2	3	4	5	6	7	8	9	10
Nominal cross-section area of core (mm2)	1.5	2.5	4	6	10	16	25	35	50	70
Specified value of thickness on insulating layer	0.7	0.8	0.8	0.8	1.0	1.0	1.2	1.2	1.4	1.4

(3)Strip: the strip is also one of requirements to check whether the pipeline is dredged as while as the direction of pipeline and the position of box accord with designs and construction drawings.

(4)peline Cleaning：

1) The aim of pipeline cleaning is to eliminate messes such as dust and sediment.

2) The method of pipeline cleaning is as following: bind the two ends of cloth on a strip line, two personnel pull the strip line back and forth and clean the mess in pipe.

(5) Paying-off and Wire Breakage：

1) Paying-off: When paying off, the conductive wire should be placed on paying-off supports or vehicles.

2) Wire breakage: When cut off, the pre-left length of conductive wire should be considered according to four situations as following

A.he pre-left length of conductive wire in terminal box, switch box, and lamp-holder box should be 15cm

B. The pre-left length of conducting wire in distribution box should be 1/2 circumference of distribution box.

C. The pre-left length of output conducting wire should be 1.5m.

D. At the branch of common conducting wires, the conducting wire may not be cut off to pass through directly.

(6) Threading in Pipe：

1) Before threading the steel pipe (wire pipe), firstly check whether shields at every pipe orifice are in good order. If there is some leakage or damage, all of them should be supplemented and replaced.

2) If the pipeline is longer or there are more swerves, inbreathe some suitable talc in the pipe while threading.

3) When threading, both personnel should coordinate harmoniously, one pulls and the other releases.

(7) Wire Connection：

1) Single core with parallel joint: conducting wires are combined and gathered up. At 12mm to it, use a wire core winding 5~7 circles at the joint and then cut off. Combine the rest and fold them at the wind wire to carry out the treatment of rinsing tin.

2) Wire joints with different diameter: if a single cord (the cross section of wire is less than 2.5mm2) or a multiple cord, firstly carry out the treatment of rinsing tin. Then, cross the filament at the heavy gauge wire at 15mm away from the insulating layer, and wind the end of wire towards the end of heavy gauge wire (single) for 5~7 circles , fold the end of heavy gauge wire back to press on the filament, and finally do the treatment of rinsing tin.

(8) Binding up Conducting Wire：

Firstly, use a rubber (or viscous plastic) insulated tape to begin from the intact insulating layer at the beginning of wire joint. In the binding process, frap the insulated tape as soon as possible. When adopting a rubber insulated tape to bind, carry out binding after drawing it more than 2 times, and then bind with a black rubberized fabric. The two ends of wire joint should be sealed closely with the black rubberized fabric.

(9) Line Check and Insulating Shake-measure：

1) Line check: Check whether the connection, weld, or wrap on conducting wire meet with the specification of construction acceptance and the regulation of quality check standard. If not meet with regulations, rectify them immediately. Carry out the insulating shake-measure again after checking without any error.

2) Insulating shake-measure: The insulating shake-measure of line may select a 500V megohmmeter that the measurement range is 0~500MΩ

3) There are two situations as followings for normal line insulating shake-measure.

A.When carrying out a line insulating shake-measure before not installing electric appliance, separate conducting wires in lamp holder box firstly, the conducting wires in switch box are connected. When a shake-measure, separate the main line with the branch line. One is to make a shake-measure, and the other should read and record readings in time. The shake speed should be kept about 120r/min, and the reading is suitable to adopt that of 1 minute later.

B.Carry out shake-measure before transmitting power supply after all electric appliances have been installed completely, firstly put all electric switches such as knife switches, instruments, and equipments in circuit at the position of switch off. The method of shake-measure is same as the above. Carry out the test run of transmitting power supply again after confirming there is no error with insulating shake-measure.

3. Installing Bridge
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The main line for distribution in the project adopts the cable crane span structure slot laying openly on suspended ceilings, generator rooms, or distribution shafts. The specific construction flow and control node are as followings.

Protect the fixing of earth line

Distribution line 7 o  o4 f' g* Z( h! G3 J

Checking lines and handling measure

Orientationofelastic line 0 \6 M4 b$ k8 A+ W+ K! f8 R

Preformed holes

Bolt fixing holder and suspender

Preembed iron

Fix metal expanding bolts

Preembed suspender and hanging structure

Jointing holder and suspender

Fixing crane span structure

(1) Technological Process：

(2) Appearance check: parts are all complete, smooth surface without any edge or deformation. The thickness is even, complete coating without any rust.

(3) Installation of Crane-span-structure Support and Hanger Frame：1

1) The hoisting of horizontal crane span structure adopt a round bar steel as a boom while an angle steel as a cross arm. The hanger frame installed on concrete structure may adopt an expansion bolt to fix on the roof.

2) The vertical support of crane span structure adopts a structural steel to make, and the fixed fitting should be equipped with a crane span structure. The support is fixed on a wall or floor, and adopts an expansion bolt to fix.

3) The interval on hoisting boom of cable crane span structure is shown as following: the horizontal distance is 2m, the vertical is 1.5m. The cross arm at same layer in every support should be at a same level, and its high-low error is less than ±5mm. The support point of crane span structure is away from the joint and it is suitable for the distance being 0.5m to the joint. At the turning or branch of crane span structure, and there is an added support point at 0.5m to the branch point. The distance from support and hanger frame to upper floor should not be less than 150~200mm, the distance to the ground level should not be less than 100~150m.

(4)he ground (PE) of metal cable crane span structure, slot, and its leading-in or leading-out of metal cable guide tube must meet with following regulations.

1) The metal cable crane span structure slot and its whole length of support should not be less than 2 sections to connect with the main line of ground (PE).

2) The two ends of junction plate between galvanized cable crane span structure and slot does not bridge with the ground wire, but there must be two jam nuts or fixed connecting bolts of lock washer at least.

3) The two ends of junction plate between non-galvanized cable crane span structures bridge the ground wires of copper cores. The minimum allowable cross section of ground wire should not be less than 4 mm2.

(5) Bridge Installation：

1)en the length of steel cable crane span structure in the straight line section is more than 30 meters, an expansion joint should be set up. At the crossing deformation seam, a compensation system should be set up, and the slot itself should be broken. In the slot, a junction plate may be used to join and not fixed. Both protective ground wire and conducting wire in slot should have some compensation allowances. The installation of over-settlement joint is shown as in the following figure.

Installation on Slot Expansion Joint
	Symbol Explanation: 1- Slot2- Slot sling3- Slot cover4- Rubber bush ring5- Connecting cover plate

2)
# W* }; Y, T4 G) ?The bend radius at the turning of cable crane span structure should not be less than the minimum allowable bend radius of cable in crane span structure. The minimum allowable bend radius of cable is shown in the following table.

3) The crane span structure is connected with a square neck bolt through a junction plate. The nut is located at outside of crane span structure. The crane span structure slot adopts the band-type connection with joints, inlets, and

outlets of box, case, and cabinet. It uses a screw to tight, and the ends should be blocked.

4) The vertical slot crane span structure should be fixed to connect with the support fixing one time per 2 meters. The support adopts an expansion bolt to fix the connection with floor and wall. The connection between slot crane span structure and support may adopt a square neck bolt to fix. The round-nose of bolt is inside of ladder-support. The installation of vertical crane span structure is shown in the following figure.

Vertical Installation of Crane Span Structure
	Symbol Explanation1- Cable crane span structure2- Support3- Expansion bolt4- Fire protection block5- Fixed angle steel

5)
The crane span structure that is laid in shafts and through different fire protection subsections should have some fire protection & insulating measures according to positions in design requirement. When through fire wall and fire floor, the crane span structure may adopt the fire insulating measure to prevent the fire continue to burn along the line. The method may refer to the attached figure as following.

Fire Block of Crane Span Structure
	Symbol Explanation:1- Cable crane span structure2- Fire block3- Steel plate4- Expansion bolt

(6) The sum of wire section area in the same slot (including the insulating layer) should not be more than 40% of inner section area.

4. Cable Layout

Put up sign board

Arrange the cables along the line slot and bridge frame

Preparations " |+ ~0 U, h  j: o) P7 Z

Plane arrangement $ I; b8 F3 |2 A& S& I3 u$ V' `; l

Vertical arrangement ! I  g- u# |- V" R' |$ }, [

End processing " o1 V6 M2 ^3 J% h+ E; `, f- ^& ]

Armoured cablegrounding wires 9 L/ [, Z4 k! S2 t8 G3 g

Bind and fix the cables - @% }9 e* B$ U: d/ ^

(1) Technological Process：

(2) Appearance check: cables have no press flat or twist, and armours do not loose and crimp. The outside protective layer of heat resistant and fire resistant should have an obvious symbol and a manufacturer trademark.

(3) Carry out insulating shake measures before laying cables：

(4) Install a sleeve when crossing cables through floors. Block the sleeve with fire resistant materials after finish laying and arrange the close measure so as to avoid water flow from the sleeve into the sub-story room. The method that cables cross through floors is shown as in the following figure.

Diagram on Cables Cross Through Floors
	Symbol Explanation1- Cable2- Fire protection network3- Angle steel4- Floor5- Fire protection package

(5) When laid along with a crane span structure or a tray, the cable should be laid with a single layer and put in order. There is no any cross, and the allowable bend radius of maximum section area cable at the corner of turning should be the standard. In the same slot (including insulations), the sum of cable section area should not be more than 40% of inner section area. When laying, put one and clasp one firmly. The normal clasps have a cable cassette and a cable clasp shown in the following figure.

Cable Cassette	Cable Clasp

(6) When passing through a settlement joint of building, the cable needs to be pre-left with proper length. The pre-left length must make the cable cannot endure any external force when moving the cable.

(7) Both the distribution box (cabinet) that cables come in or goes out and the pipe orifice should be treated with seal.

(8) Hanging Labels：

1) The specification of label should be consistent, and the label should have antisepsis performance and be hung firmly

2) The label should note with serial number, specification, and model of cable as while as voltage level.

3) Lay cables along the crane span structure. Hang the label at its two ends, turning, and cross. The label should be set up in addition properly at the section of straight line.

(9) Electrify only till the test of cable join is qualified and all such as connection direction, phase, and fire protection measure are checked and confirmed.

5. Installation on Distribution Box and Cabinet：

The distribution box in the project may be divided into several types such as lighting distribution box, power distribution box, and control cabinet.

(1) Technology Process on Installing Distribution Box：

Installation of the Tank Body

Installation of the Core Tank

Construction Preparation

Distributing and Connecting Lines + @( b, \/ Q: a$ Y2 g/ k/ `

Flexible Line Orientation

Jumper Connecting Earth Wires 7 T! j# w" Y5 @4 `$ ]9 J( E& [# g

Insulating Hand Testing

(2) Installing distribution box or cabinet：

1)
Open Installation on Distribution Box Hanging on Wall：

When installing openly the distribution box on wall, be sure to guarantee the installation position is correct. Parts are complete, and the open pore of box should be suit to the pipe diameter of guide tube. All guide tubes and open pores of wires in distribution box must have protective measures to prevent damaging the wire cable. The distribution box adopts expansion bolts to fix on a wall. The open distribution box on a shear wall of concrete structure is shown in the following figure.

Open Distribution Box
	Symbol Explanation:1- Steel pipe2- Distribution box3- Expansion bolt

2) Installation on Console：

The number of output loop in power control box is more, and the weight is large. To ensure installing the distribution box firmly, adopt a floor type of distribution cabinet. When installing the floor type of distribution cabinet, use a U-steel to fix the support. The console is installed in a piece of base steel. When the base steel needs some shims in the process of installation and make-level, the maximum number should not be more than 3. The top of base steel is suitable to be higher 10mm than the even ground. The allowable deviation of base steel must accord with the following table.

Item	Allowable Deviation (mm)
Verticality	Per meter	1
	Overall length	5
Levelness	Per meter	1
	Overall length	5

When installed individually or in low, the verticality and levelness of disk cabinet and the allowable deviation between the levelness of disk cabinet and the seal between disk and cabinet must accord with following requirements.

Item		Allowable Deviation (mm)
Verticality (per meter)		1.5
Levelness	The top of two contiguous disks	5
	The top of two row disks	5
Unevenness	The edge of two contiguous disks	1
	The face of row disks	5
Seam between disks		2

(3) Wiring in Distribution Box：

1) The distribution in box is in order, and bound into bundle without any hinge joint. At flexible parts, use spikes to fix. The conducting wire led in/out of disks should leave proper clearances so as to be convenient to examine and repair. The serial number of loop is complete and the symbol is correct. The wire connects compactly not to damage cores without any break one. The wire section area at two sides of screws under washers is same. The number of wire connection at the same terminal should not be more than 2, and the parts such as lock washer are complete.

2) In a lighting box, a null line (N) and a protective earth line (PE) should be set up separately into a bus bar. The null line and the protective earth line may be transmitted through the bus bar.

(4)nsulating Shake Measure：

After finishing all distribution boxes, carry out an insulating shake measure on the circuit with a 1kV megohmmeter. The item of shake measure includes between phase line and phase line, phase line and null line, phase line and earth line, and null line and earth line.

6. Installation on Electric Appliance：

The installation of electric appliance at the end of the project mainly includes installing lamps, switches, and sockets.

(1) Technological Process：

1)
Technological process for installing switch sockets

Line box clearness

Lead connection - z, q5 a' C; n/ u. s

Examination & acceptance " q$ o! R9 X) |/ R! a" j

Panel installation

Electrified trial operation

2) Technological process for installing lamps

  

Lamp examination

Lamp assembling . A% k) c6 E, r1 A5 E

Examination & acceptance ) x, P0 W  j; @( r/ N

Lamp installation

Electrified trial operation , u0 c  q4 k1 {4 o

(2) Basic Requirement on Installing Lamps:

The conducting wire through lamps must not endure additional stresses and wears at the joint of branch. The terminals of multiple flexible cords need windings and rinsing tins. The conducting wire in lamp should not near light sources too much and adopt some heat-insulating measures. When the

distance from lamps to the ground level is less than 2.4m, the exposed conductor that lamps may near must use the special grounding bolt to ground and have obvious marks.

(3) Installation on Lamps:

1) Installation on embedded lamp:

The office area in the project uses embedded fluorescent lamps. The embedded fluorescent lamp that is installed uses Ф9 round bar steel as a boom of lamp. The installation on embedded fluorescent lamp is shown as in the following figure.

Installation on Embedded Fluorescent Lamp
	Symbol Explanation1- Boom2- Elevator3- Pipe strap4- Hose joint5- Metal hose6- Keel7- Terminal box8- Ground wire9- Wire way10- Suspended ceiling

F01 hall in the project uses embedded trunk lamps. The embedded trunk lamps use the clamping apparatus of trunk lamp to fix on decorative keels. They need Ф6 round bar steel boom to fix trunk lamps if the weight of trunk lamp is more than 1.5KG. To trunk lamps that the ballast resistor is separated with the body of lamp, the ballast resistor needs to be fixed individually. The installation of embedded trunk lamps is shown as in the following figure.

Installation on Embedded Trunk Lamp
	Symbol Explanation1- Electric pipe2- Ground card3- Ground wire4- Terminal box5- Support6- Trunk lamp7- Metal hose8- Wire connector9- Gold tool fixing electric box10- Suspended ceiling11- Lamp & clamping apparatus

2) Installation on Wall Lamp:

To the lamp installed and embedded in wall, pre-leave holes for lamps in the phase of structure construction. Install lamps at the phase of decoration and construction. The installation of indicator at safety outlet is shown in the following figure.

Installation on Embedded Indicator at Outlet
	Symbol Explanation1- Steel pipe2- Ground card3- Built-in box4- Lamp

(4) Basic Requirements on Installation of Switch and Socket

1) The panel of switch and socket and the body of terminal box are integrated without any break and all parts are complete.

2) The hidden switch and socket panel should be close to the wall compactly without any seam around. They are installed firmly and the surface is smooth and neat without any 石皮解 or scrape. The decorative nuts are complete.

3) The position of switch should correspond to that of lamp. The direction of switch in the same unit should be consistent. The distance from the edge of switch to that of doorframe is about 150~200 mm. They should not be put at the back of single door.

4) At the place stuck with stone ceramic tile on the wall in toilet and hall, the panel of switch and socket should be arranged at the geometrical center and stuck to the wall closely as while as installed correctly. It may refer to the following figure.

Installation of Switch Panel on Wall

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5) The same model should be installed in parallel. The installing height of switch at the same room should be consistent and controlled in order without any dislocation. The distance of hidden socket to the surface should accord with requirements in drawings. The installing height of sockets at the same room should be consistent.

(5) Installation on Switch and Socket：

1) Wiring on switch and socket: The on-off positions of switches in the same building should be consistent. They operate flexibly and touch reliably. The phase line of lamp should be controlled through switches. To socket with single-phase-two-hole, the right or upper hole facing to socket is connected with the phase line, and the right or lower hole is connected with the null line. To socket with single-phase-three-hole, the right hole facing to socket is connected with the phase line, and the left hole is connected with the null line. To ocket withsingle-phase-three-hole, three-phase-four-hole, or three-phase-five-hole, the ground line or null line is connected with the upper hole. The grounding terminal of socket is not connected with that of null line. To three-phase socket at the same spot, the phase sequence of wiring should be consistent.

2) Hidden switch and socket: firstly, use a cold chisel clean out the mess in box lightly. Clean the box, and connect the conducting wire out of box with the panel of switch and socket. Push the switch or socket into box (if the box is deeper more than 2.5cm, add a sleeve box). Aim at the hole of box, and use screws to fix firmly. When fixing, correct the panel and make it level with wall space.

3) Open switch and socket: firstly, pass the conducting wire out of box through the outlet hole of insulating plate. Then, stick the insulating plate to wall space closely, and use screws to fix on the box or brick. After fixing the insulating plate, pass the phase line and null line out of box through the outlet hole of switch and socket according to each position. Press the conducting wire firmly according to the connecting requirement. Then, stick the switch or socket on the insulating plate, center to aim at. Use screws to fix firmly. Finally, put the cover of switch and socket well again.

seek_fan

什么东东？没有看清楚啊。

seek_fan

有没有人能够讲解一下的？

ravb1314

汗哦，说我潜水72小时以上。。谢谢楼主分享

nathanyc2009

这应该是电缆铺设的步骤以及保质保量所要注意的事项。
感觉这是土木工程的东东。