管道安装：Pipeline Installation: G、（一）基本要求：) Base requirement: （a）雨水管道应按设计规定的位置安装，悬吊管不设坡度、要水平安装。 Stormwater pipeline design requirements should be the location of installation, suspension control is管道安装：Pipeline Installation:
G、（一）基本要求：) Base requirement:
Stormwater pipeline design requirements should be the location of installation, suspension control is no slope to the level of the installation.
Rain on the riser design requirements should be set up checkpoints to check population centers from the ground 1.0m. When using high-density polyethylene (HDPE) pipe, the inspection interval I set up the largest not more than 30m.
Horizontal rain and riser pipe, riser pipe from the connection with the use of two 45 ° elbow bend of R ≥ 4D or 90 ° elbow.
Rain water pipe through the walls and floor in accordance with the requirements set casing.
The installation process, the buckets of rain water pipes and open closure measures to be taken by mouth.
Suspension should be avoided through the construction joints settlement joint. As a result of the situation can not be avoided, the pipe should be based on the characteristics of the system, taking into account different pipe deflection, to take corresponding measures.
HDPE pipe to connect the use of hot-melt or fused welded casing connection.
The use of HDPE pipe cutting machine pipe cutting, incision perpendicular to the pipe center, the level of suspension of HDPE pipe on the use of fused pipe hoop, with the installation of fixed items.
Butt Fusion HDPE pipe connection: will need to install the PE pipe to connect two devices at the same time fixture on the hot-melt (Fixture to be installed in accordance with the diameter size of the replacement tile folder), the other end of each pipe tube stent to hold the same level. Electric rotary knife cutting, respectively, the formation of pipe-end to ensure that the two tubes can be fully in line contact. Electric heating panels will heat up to 210 ° C, place the middle of the two end pipes, electro-hydraulic device to operate at both ends at the same time fully face contact with the electric heating plate. Meet the requirement of heating, the heating plate removed, re-operation of the hydraulic device so that the two have been fused pipe butt-end and fully hydraulic locking device (to prevent the rebound). When the thickness of the heating pipe crimping, butt time technology to meet the material requirements, manufacturers generally refer to the technical parameters and specifications.
Fused Connection: PE pipe will be completely fused tube inserted, the machine will be dedicated fused two wires were connected to positive and negative poles of fused pipe, connected to power, will be embedded in a fused tube filament of electric heat so fused pipe fittings and pipe materials in contact with heated Department weld into one.
H、 埋地管安装：The installation of buried pipe:
As the system pressure is large, discharge pressure control should be used to control and increase the diameter of the pipe 2 accounts in order to relief, which will not be washed out of the rain water wells connected.
Buried depth of rain water pipe should be buried in the frozen line, consideration should be given to the upper part of the load pipeline.
Cast iron pipe can be installed directly, without the disturbance of land based on the original; when not in conformity with requirements, at the bottom of the trench should be installed not less than 100mm thickness of the sand cushion.
The laying of HDPE pipe in - like a soil layer of the pipe trench Shop 100ram not less than the thickness of the sand cushion, in the inspection wells penetrated through contact with the wall of the pipe end 2 parts binder brushing and rolling on the sand , and then water into the sand mortar to prevent leakage of rainwater at the bottom of the riser pipe, the concrete buttress or should be fixed firmly to take measures.
I、灌水、通水试验：I. The test of irrigation and water
Some hidden underground pipeline irrigation must be done before the trial can be hidden after passing.
After fighting the installation of rainwater must be done on the roof or water test Gutter. Test bucket rain blocked all of the roof or Gutter water. Bucket rain water should be submerged, continuous lh, Rainwater Gutter fighting around the roof should not leak or for the qualified.
Rainwater pipes should be done after the installation of water testing, water height of the upper part of each system must be to fight the rain. Irrigation sub-high-rise buildings can be carried out. Water over 15min, drop in the water and then filled observation 5min, level did not fall, leak-free for qualified interface.
A、管材： The material of pipe:
Should be cast iron pipe, steel pipe (galvanized steel, stainless steel pipe) and HDPE pipe material. For the same system of pipes and pipe fittings and rainwater syphonic short tube connecting the buckets should be used the same materials, all kinds of pipe material acceptance criteria are set.
Rain bucket should be tested by hydraulic bucket siphon rain, and with the anti-eddy current device.
Set up on the roof Siphon rain bucket, the contact piece of roofing material should be and the corresponding material. For the use of asphalt as a waterproofing roofing material, to be used in contact with stainless steel film. Set in the days of trench fighting rain syphonic tablets should be connected with connecting material film material should be determined in accordance with Gutter.
Electric welding machine, butt-type hot-melt machine, angle grinder, welding machine, cutting machine, horizontal ruler.
Buried pipeline, within the riser tube, ceiling with horizontal branch pipe and the requirements of anti-condensation pipes in irrigation need to be hidden before the test.
Should not be lower than its high water sanitation equipment on the ground floor or the bottom edge of the high ground, water after 15min, and then filled observation 5min, liquid does not drop, no leakage of pipelines and qualified interface.
Toilet water test tube, each needs to be closed if the water tests, the installation of airbags in two ways: one is the installation of edge for edge, a layer of drainage installation is complete horizontal branches, from three to lay down their balloon off the mouth Department; one is for the final unification of the layer to check the mouth to check the airbags installed in the top of the mouth; the story without checking I would take out a balloon of the tracheal length 5m (available oxygen tape), will air from the upper mouth to check the slow down the release, it is estimated that air bags can be located in the bottom of three direct links.
Pressure test before informing the staff, signed after passing inspection, the procedures for the handover process. China's net and then the water and then cover the next process.
满水排泄试验Full of water excretion test
Sanitary ware hand over a completed project should be a full 100% test water excretion. Sanitary ware will be full of water, reached the mouth spillway, the spillway mouth to check the flow, pull out the block plug to check the patency of the drainage point, the pipe and the connector and plug the leakage of any phenomenon. Qualified to fill "irrigation (full) water test records", reported to the Commissioner of the Department of acceptance of the project.
And test the contents of the project divided into: General design requirements in accordance with norms and sub-parts, sub-systems to carry out. The level of drainage pipe, the main riser should be 100% pass the ball test, and take notes. Test should pass the ball indoors sanitary ware, such as drainage and installation of all finished water after passing inspection. Test pipe should be not less than the ball diameter pipes diameter 2 / 3 should be used in weight and easy to crushing of the hollow spheres, and pass the ball to reach the 100 percent rate.
B。主要试验方法：B. The main test method:
a. Drainage riser pipe should be self-reliant in the ball at the top of the test, in the riser pipe at the bottom of the export of lead inspections, water will test the ball out from the export.
Wang dry tubes and pipes should be led to try to check the ball before the end of pipe section of input water to pass from the end of extraction tube. Outdoor inspection wells (combination wells) would need to increase network temporary cover, try to identify the ball will be stopped out.
Pass-the-ball Test is passed when the ball don’t meet stop. If the ball makes no sense to try to clean up in time to plug the pipe material and re-testing until qualified so far.
（三）薄壁不锈钢管道安装Thin-walled Stainless Steel Pipe Installation
施工准备 → 材料检查验收 → 测量下料 → 管件组对 → 支架制安 → 管道连接及法兰连接 → 试压冲洗 → 管道验收及保温 → 设备碰头 → 系统调试
Construction Preparation - Material Acceptance Inspection – Measurement and Blanking – Pipe Fittings Pairing – Support – Pipe Connection and Flange Connecton – Flushing and Pressure Test – Pipe Acceptance and Insulation – Equipment – System Debugging
Cold water pipe and hot water pipe for indoor production and living are all produced with thin-walled stainless steel pipe: groove coupling when pipe diameter is ≥DN125 and compression connection when pipe diameter is ≤DN100. After the entry of stainless steel pipe, pipe fittings should be carefully examined to make sure that there is no obvious scratch on the vertical surface and the pipe end should be flat without burrs, crack, scars and stoma. Pipe fittings, material and specification should be as same as required. And pipe fittings should be separated from other metal materials to prevent scratch on the surface by something hard like sandstone or other metals.
Abrasive cutting machine (of which the grinding wheel should be particular) should be used for pipe cutting. After the cutting, use special file to clean sundries and burrs inside and outside the pipe orifice. Stainless steel pipe should have wood plank or rubber plate as pad on its two sides to prevent damage to the pipe wall when being helded. Gas cutting must not be used for cutting and bevelling of stainless steel pipe.
Cut stainless steel pipe in required lengths before installing and make sure the cross section must remain vertical with pipe axis. And use special file to file away and dress smooth burrs at the end face.
Stainless steel pipe must not have axial twist problem when laying and must not be forcefully regulated when penetrating wall and floor. Never allow to have contracted waist, arched waves and twist phenomenon after the installation.
When embedding pipes into the wall, make sure hot water pipes (except insulation pipes) have extend-retract allowance to some degree. Expanded plastic or other soft materials could be put between pipe fittings and walls at the corner and be made cling to pipe fittings with cement mortar.
The support and hanger of thin-walled stainless steel pipe should have correct, even and firm installation position. The distance between mounting brackets should be no more than 15m and the distance between mounting brackets of hot water pipe should be determined according to thermal expansion volume of pipeline and compensation dosage of expansion joint allowed. Mounting brackets should be set at reducing nipples, branches, interfaces, penetrating loading bearing walls, two sides of floor, buttom of vertical pipe, pipe distribution points and where the equipment is to be taken over. Stainless steel pipe should have stainless steel support or pipe clamp as its movable support for unfold installation. Plastic pipe clamp could be also used for pipe installation when the nominal diameter is no more than 25mm. When other metals (except copper) are used as support or pipe clamp, soft shock insulators like wooden materials or rubber should be used at the interface.
Flushing and pressure test should be carried out after the installatio of cold water pipes and hot water pipes. Pressure test should be done with pressure slowly raised to pressure test value segment by segment. The pressure for cold water pipe test is 1.5 times that of working pressure of pipe system and no less than 0.6 MPa, whereas the pressure for hot water pipe test is the working pressure of systme apex (which can not be less than 0.3Mpa) plus 0.1Mpa. Keeping the pressure for 10 minutes without leakage means the test is passed and at the same time take down records.
Pipe for potable water should be sterilized in full pipe of low chloride disinfectant after pressure test is passed. Disinfectant should be left for rest of 24 hours in the pipe which after emptying of disinfectant is rinsed in potable water until it conforms to the requirements of Sanitary Standard for Drinking Water GB5749.
2.9不锈钢管安装、试压完后，要进行管道保温工作，保温材料采用橡塑，不同规格管道保温厚度如下 Pipe insulation is carried out after installation and pressure test of stainless steel pipe. The insulation material should adopt rubber and plastic. Insulation thickness for pipes of different specifications is as follows:
保 温 厚 度（mm）Insulation Thickness 30 40 50
Determine the size and length of casing pipe according to the thickness of penetrated structure and pipe diameter during penetrating of pipes into walls and floors. Paint anti-rust varnish inside the casing pipe after blanking and prepare the prefabricated casing pipe with casing pipe 50mm higher than ground and its bottom at the same level as floor surface. Make sure their center lines remain vertical with each other when embedding upper and lower casing pipes. Deal with the gap of all casing pipes strictly following the stuffing operation as required by design in the rooms where there are gas pipes.
（四）钢管法兰连接Steel Pipe Flange Connection
1焊接式法兰连接Welded Flange Connection
1.1焊接法兰安装工序Flange Welding Installation Process
Flange Assembly – Welding – Pad Making – Cushioning – Bolt Invasion – Fastening
（五）管道螺纹连接Pipe Thread Connection
1管道螺纹连接流程Pipe Thread Connection Process
Breaking Pipe – Threading Chasing – Pipe Fittings Assembly – Pipe Section Straightening – Installation
2管道螺纹连接注意事项Cautions for Pipe Thread Connection
2.1加工管螺纹的套丝机必须带有自动度量设备，加工螺纹时，使用螺纹量规检查螺纹是否符合管道螺纹锥度的标准（JIS B 0203）
The threading machine for thread processing must have automatic measurement devices so as to check whether threads comply with the standard of thread taper (JIS B 0203) in threads processing.
Use electric pipe threading machine for processing of pipe thread connection for 1~4 processing times. 2 times for 15~32mm of pipe diameter, 3 times for 40~50mm of pipe diameter and 3~4 times for 70mm of pipe diameter.
The processing of threads should be done to make threads upright, clear, complete and smooth without burrs, broken ends and the total length of short of wire should be no more than 10% of the length of threads.
Fillers for thread connection should be white hemp thread or PTFE raw material belt. Threads should be fastened tight one-time with 2~3 circles of threads left and re-fastening is not allowed.
Clear the fillers outside of threads after pipe connection. Fillers could not be squashed into the pipe to avoid block. At the same time, antiseptic treatment should be done to the naked threads.
Spray support should be installed in two times: install horizontal pipe well before suspended ceiling and open three openings at the first time and insert support when decorating ceiling joist to suspended ceiling at the second time.
（五）给水管道冲洗、压力试验Water Supply Pipe Flushing and Pressure Test
1试压水源Water Supply for Pressure Test
试压水源为工程临时用水水源，利用每层临设用水点。Water supply for pressure test is taken from construction water for temporary purpose and set temporary water use sites in every floor.
Establish pressure test team on site for the success of one-time pressure test of pipes. Divide pipe system into several sections according to designed vertical division block and have individual test of every section and block and final pressure test for the system as a whole.
2试压一般要求General Requirements for Pressure Test
2.1管道在隐蔽前做好单项水压试验，系统安装完后进行综合水压试验Take individual hydraulic tests before covering up pipes and have a comprehensive hydraulic test after the installation of system.
Seal the blind plate and check carefully whether the pipeline is correctly connected and block phenomenon in the pipe before pressure test.
2.3管路上的各种阀门在安装前要拆开清洗，检查阀柄是否灵活，并经试压不漏后方可安装Take apart all valves along the pipeline for washing before installation, check whether valve handles are flexible. The valves can be installed after passing the pressure test.
Water for pressure test of pressure piping is injected slowly from the bottom until there is water from deflation valve at the top and suppress when there is no air. Continue to raise pressure to testing pressure when there is no leakage from pipes, all joints and valves after checking. Repairment should be done in time if there is leakage and resuppress. Obeserve pressure decline to allowed range within continuous set time if there is no leakage.
The equipemnt for pressure test of pressure piping should be electric pressure pump or manual pressure pump with no less than 2 pressure gauges and with precision no less than 1.5 grade and measuring range should be 1.5~2 times that of pressure testing value.
Parol inspection is necessary to prevent metal breakout and sweating phenomenon during pressure test.
3管道试压Pipe Pressure Test
Pressue test should be twice that of pressure pump net head and no less than 0.75MPa for the pipe connected to water pump.
Pressue test should be twice that of water tank static head and no less than 0.75MPa for the pipe connected to high level cistern.
Metal feedwater pipe should be first observed for 10 minutes under testing pressure. Decrease pressure of no more than 0.02Mpa and then decrease to working pressure and check to make sure there is no leakage.
The time for pipe pressure-bearing test is 60 minutes.
在系统试压合格后，交付使用前进行冲洗试验，冲洗要以有压生活用水进行冲洗，直至水中不带泥沙、铁屑等夹质，且出口处水的颜色、透明度与入口处水的颜色基本一致时方为合格。After passing pressure test, flushing test is carried out for the system before taking over to use. Flush the system in confined water for life until there is no impurities such as silt and scrap iron in water and water at the outlet has almost the same color and transparency as that of water at the inlet.
Have individual flushing of pipeline for every section and block. Choose suitable positon as water inlet and water outlet for flushing and have up-town flushing in the order of principal pipes, vertical pipes and branch pipes.
Dismantle parts which will block the flow of dirt such as relief valve, filter gauze, thermometer and check valve along the pipeline before flushing. Check pipe support and hanger and take measures to reinforce them if necessary. At the same time set blank flange in every pipeline and connect temporary feedwater pipe or drainage pipe on the blank.
Inject pipeline with water for full and keep the system at a fixed pressure.
4.4冲洗直径大于100mm的管道时，要对其焊缝、死角和底部进行敲打，但不得损伤管道Tap the welding line, blind angle and the bottom when washing pipes of more than 100mm diameter and take care not to damage pipes.
Clean devices which cannot stand washing and the pipe section which may have dirt and sundries left after washing such as filters or dirt separators.
Reinstall the parts which are dismantled after enough washing.
After pressure test is passed, pipe for potable water should be sterilized in full pipe of 0.03% potassium permanganate disinfectant before it is taken over for use. Disinfectant should be left for rest of 24 hours in the pipe which after emptying of disinfectant is rinsed in potable water.
Potable water should be up to the existing national standards for its water quality.
Pay great attention to pipe drainage after pressure test as it concerns electrical safety, finishd products protection and dryness of basement. It is necessary to make plans against pipe drainage and consider recovery and reuse for larger water volume.
Consider to add temporary drainage pipeline for drainage after pressure test in the sections and blocks of buildings. Lay the pipeline to larger water tank of adjacent buildings for temporary store and reuse or connect pipeline to new pressure test pipes with water hose for reutilization.
Lay temporary pipeline for drainage in view of the practical situation on site to concrete pools shared for firefighting and miscellaneous water in the basement and set temporary water pump for reuse and provide water for temporary production on site.
排水系统试验：无压管道灌水试验Drainage System Test
Water filling test should be done before covering up sanitary sewer and waste pipe with watering height of one storey higher than the upper edge of sanitary ware at bottom layer or the height of ground floor and keep injecting water for at least 30 minutes. When there is fall of water surface after 15 minutes of injection, continue to inject to full and observe for another 15 minutes with no drop of water surface and no leak from pipe or joints meaning qualified.
Construction Technology Flow of Exterior Buried Water Discharge Line
施工准备 → 材料检验 → 管沟开挖 → 管沟清理 → 管道连接 → 管道防腐 → 管道敷设前检查 → 管道敷设 → 管道验收 → 分层回填夯实。
Construction Preparation – Materials Examination - Trench Excavation – Trench Cleaning – Pipe Connection – Pipe Preservation – Check before Laying Pipe – Pipe Laying – Pipe Acceptance Inspection – Refilling and Tamping layer-by-layer
卫生洁具安装Sanitary Appliance Installation
安装准备→管道预制→污水干管、立管、支管安装→通水通球试验→洁具安装→灌水试验Installation Preparation – Pipe Prefabrication – Installation of Main Pipe, Vertical Pipe and Branch Pipe for Sewage – Water Test and Ball Passing Test – Sanitray Appliance Installation – Water Filling Test
2安装一般要求General Requirements of Installation
Choose ground line according to the plane coordinate as required by drawings and place expansion bolt well in the ground and wall based on the size of equipment (cover bolt with sealant to prevent damage to its waterproof property). Make sure the support of sanitary appliance is firm and tidy and it must be tightly connected with appliance.
Take away pipe plug like coverings at outlet before installing appliance and install the appliance after faucets are cleaned clear.
The support and bracket of sanitary appliance must be good at antisepsis. They should be installed tidy and tight with close and stable connection with appliances.
Water supply fittings of sanitary appliance should be complete with no damage, tight joint and be flexible to open and close.
Installation quality of sanitary appliance should strictly follow the specification of construction and acceptance.
The crack between outlet of water closet and drainage pipe should be even and filled with putty to prevent leak. During installation, to locate with rough measurment method, that is to cover chassis of water closet and outlet with putty and insert outlet into sewer pipe orifice, all of which is then directly hung onto wall. Finally press off the chassis and squeeze out putty.
Use wall-hung auto sensing urinal for drainage. The trap of urinal could be dismantled, which makes it easy for cleaning. Before and after installation, check whether reserved feedwater and drain pipe orifices are in the same perpendicular line and whether they have same space length. Find out center line based on pipe orifice after meeting the requirements and clean the surrounding areas of sewer pipe. Finally fit urinals straightly and level and hang urinals onto hangers.
Choose assembly dimensions of sanitary appliance according to specfic size.
3卫生器具安装允许偏差Permissible variation in sanitary appliance installation
4满水与通水试验Water Full Test and Water Test
After installation of sanitary appliance, floor drainage and clean-out opening , water full test and water test should be carried out for every system (section and block) before taking over.
Check whether the maximum quantity of distribution points in interior water supply system all achieve rated current as required by design.
Interior drainage system has its distribution points opened simultaneously as many as 1/3 that of water supply system. Check whether all drain points are smooth and whether there is leak at the joint.
Specific inspection method: when water surface drops after 15 minutes of injection to full, re-inject water to full and observe for 5 minutes with the result of no drop of water surface, no leak from various fittings like corner valves and flexible hoses and smooth water supply and drainage meaning the test is passed.
Power Transmission after Installation of High and Low Voltage Switch Boxes
Vertical swinging of transformer and other high & low voltage switch boxes should be carried out simultaneously. Have further argument and optimization of hoisting plan before hoisting. Swing basement transformer with mobile crane from first floor openings and swing scaffold on device layer with tower crane. The horizontal shift of transformer on floors is carried out as shown in the picture below.
变压器在移动过程中确保设备和人身安全。变压器运至安装位置后采用门型架、倒链就位。Make sure the equipment safety and human safety during the move of transformer. The transformer is fixed with door fixture and chain block after being transported to installation position.
Shaped steel is used for the foundation of transformer which has spring shock absorber installed. Use cables to connect at high voltage side of transformer and generatrix at low voltage side, both connection of
2.4.1变压器特性值测量报告Measuring Reports of Transformer Characteristic Value
a、工频耐压试验Power Frequency Withstand Test b、感应耐压试验Induced over Voltage Withstand Test c、局部放电测量Partial Discharge Measurements
变压器安装就位前要对它进行绝缘电阻测试，绝缘电阻值大约为：高压对地=250MΩ，低压对地=50 MΩ，高压对低压=250MΩ。如果检测值明显低于前述，则检查变压器是否受潮。Insulation resistance test should be carried out before installation of transformer with insulation resistance value is about: high voltage versus ground =250MΩ, low voltage versus ground =50 MΩ, high voltage versus low voltage=250MΩ. If detection value is obviously less than the above, check whether the transformer is exposed to moisture.
Transformer no-load noise test. This test is carried out after transformer system is electrified (or temporarily electrified) in relatively quiet on-site environment. The test is suggested to be done in silent deep night with doors and windows closed.
Before power transmission, as required by related policies in China Electric Power Department, a series of tests should be carried out for transformer such as winding direct current resistance test, winding insulation resistance test, no-load current test, short circuit test, transformation ratio and type test, AC withstand voltage test, shock closing test under rated voltage, voltage regulation shifter checking test, phase check etc. All the above tests are carried out according to related policies in Shanghai Municipal Electric Power Company entrusted.
2.5 其它相关要求Other Related Requirements
Wrap the transformer after unpacking with plastic film for protection from moisture and possible entry of metal fillings during the building construction before the transformer is to be used.
During the connection operation of cables or generatrix with transformer, use step ladder or temporarily set stand to make sure construction crew can get to the terminals closely enough. It is not allowable for any part of transformer body to bear whole or part height of construction crew. The junction of bonding jumper should be clean and covered with conductive paste. And the tightening moment for bolt must fit with equipment wiring requirements.
2定货验收 Ordering and Acceptance
The corresponding ordering of distribution box shall be in strict accordance with the requirements of the drawing, giving full consideration to the position of access wires and the embedded space and ensuring the dimensions unity between the adjacent distribution boxes as far as possible. When the distribution boxes approach, acceptance checks shall be exercised to their appearances, dimensions, specifications, quality certificates and technical documents, checking whether the inside components are mounted, lines are neatly arranged and firmly crimped, the components inside the distribution boxes are complete and also the wiring is correct.
3配电箱安装 Distribution Box Installation
3.1挂壁明装 Surface Mounted Wall Hanging
Open poles at the top or bottom of the distribution box according to the cable or wire direction and the cable tray specification. Rims of holes shall be protected by rubber to avoid any damage. The distribution box shall be mounted with expansion screw bolts on the wall.
Pull screws shall be mounted to fasten the installation of distribution box on the partion wall.
3.2落地明装 Surface Pedestal Mounting
Pedestal mounting of the distribution box shall be fixed with support which should be adjusted leveling before the bedding layer is prepared and have a distance of 4cm to the surface of the bedding layer.
3.3箱内接线 Wiring inside the Distribution Box
箱内接线包括分回路的电线与配电箱元器件的连接，弱电消防等控制回路导线的压接。箱内接线总体要求为接线正确、配线美观、导线分布协调。同一接线端子最多允许压接两条导线。Wiring inside the distribution box consists of connection of wires of sub-loop and components of the distribution box and wire compression of control loop for weak current fire protection, etc. Wiring inside the distribution box generally requires correct wiring, aesthetic distribution as well as coordination of wiring arrangement. One terminal block shall allow no more than two wires at the same time.
电线与配电箱元器件的连接，根据导线的功能、线径及连接器件的种类采用不同的连接方式，共分为与母排连接、与断路器出线孔连接两种情况。与断路器连接的电线插入断路器的出线孔后，通过压紧螺丝固定，多股线搪锡后才能连接。与母排连接的电线通过接线端子连接。According to the function, diameter of wires as well as the types of the connection pieces, there are two ways of connection of wires and components of the distribution box: busbar connection and connection with the wire holes of circuit breaker. Wires after inserting the wire holes shall be fastened with pressing bolts and tin lining strands before connecting the circuit breaker. And wires shall be connected to busbar through the terminal block.
3.4线路绝缘测试 Line Insulation Test
Insulation test shall be exercised to the lines inside the distribution box after wiring, mainly including inlet cable insulation test, distribution line insulation test and secondary circuit line insulation test. Before the insulation test, air switches, light switches and equipment connection points on both sides of the cable shall be disconnected to ensure accuracy of the insulation test.
3.5配电箱进出电缆处封堵Cable Access Plugging of the Distribution Box
Access of the distribution box shall be plugged after cable insulation shake test.
2定货及验收 Ordering and Acceptance
According to the project situation, all the cable tray connectors and fixed parts shall apply the matching products from the manufacturer. After the cable trays have been delivered to the construction site, checks shall be performed to them before acceptance on their appearance, dimension, thickness, quantity and technical document, etc.
3桥架支架安装 Installation of Cable Tray Support
The horizontal cable tray support shall applyφ12 galvanized round steel harness as the booms and galvanized angle steel as the arms. Furthermore, in order to prevent shaking, the cable tray shall be fixed by steel support each 1.5m at the corners and the support shall apply expansion bolts to fix on the roof. The diameters of the booms shall correspond to the width of the cable tray, which is shown in the following table.
The vertical cable tray shall be made of steel, and the fixed parts shall match with the cable tray. The support shall be fixed by expansion bolts on the wall or floor slab. For the consideration of shock-proof, spring bracket shall be applied when the vertical cable tray penetrates the floor slab. Shock absorbing supports and hangers shall be installed to the necessary parts in accordance with the bidding book when installing supports.
4桥架安装 Installation of Cable Tray
Ladder shall be used for horizontal cable tray in electricity distribution room. In other places, the closed tray-type cable support can be applied. In connecting the cable trays, matching accessories from the manufacturer shall be applied, and the tee and bending of the cable tray shall meet the requirements of the bending radius of the cable laying inside the cable tray.
The support, floor slab and wall shall be fixed by expansion bolts, while the connection between the cable tray and the support shall be fixed by round-head bolts with the head at the inner side of the ladder. To protect wires and cables, the joint of cable tray and distribution box (cabinet) shall be connected by rubber sheet.
5桥架穿防火分区处理 Treatment of Cable Tray Crossing the Fire Compartment
Fireproofing treatment must be carried out to the gap between cable tray and building when cable tray crosses the fire compartment. And the fire proof materials shall be capable of resisting fires for more than 3 hours.
6桥架支架及桥架接地 Capable Tray Support and Cable Tray Grounding
For the safety use of cable tray, the support must be stably grounded. After the cable tray has been laid, they shall be grounded in the distribution room, and the the trunking should be set with ground terminal which is to connect with ground busbar on the distribution cabinet through soft copper strip. For non-galvanized cable tray, copper core wire shall be applied for conductive connection in the junction, the cross-section being no less than 4mm^2.
电气预埋 Electrical embedment
Electrical casing pipe installation
The thread length of the electric tube mouth should not be too long or too short. It shall be equal to the standard thread length of the original tube, the general thread length being 15-20mm
Tubes must be removed prior to installation of glitches and iron scraps, and section beam shall be used for electric tube connection. Tubes shall be cut off by hacksaw or grinding wheel cutter, and the fracture shall be filed smooth and removed of glitches to ensure smooth nozzle. Flame cutting is strictly prohibited.
Long thread should be avoided at the junction of electric tubes. If it is needed under specific circumstances, the beam section should be rotated at the tube side with the longer thread, and the thread at the tube mouth shall be at the same level of beam section, while a node shall be installed at the front end of the beam section. When it is connected to another thread tube, the beam section shall be back spinned so as to screw on both half ends of the beam section, and finally the beam section shall be compressed by backfordwarding the node so that the tube will be not easy to break.
D、电管与金属配电箱或过路箱连接，都要使用钠子拧紧，开孔均要用开孔器，开孔尺寸应与电管尺寸相匹配，且严禁用气割开孔。Electricity pipes and metal distribution box or boxes to connect crossings should be tightened using sodium son, are to use opening hole, and hole size should match the electric tube size, and is strictly prohibited to use gas cutting openings
Electric tube bending in the plane of the nozzle on the application of plastic seal retaining vol
Lamp box, crossing at ramming me pouring concrete, and retaining possession of the mouth to use sealing closure volume, and a box with something non-perishable stuff to prevent the concrete or mortar into the tube or box
Application of electric pipe bend to meet the requirements of the pipe or field bends the system may not have a wrinkle bend cracking phenomenon, ovality must not exceed +10% diameter, bending radius shall meet the following requirements
When the laying of underground pipe corner should be not less than 6 times the pipe outside diameter
When laying flat at the ground floor or concrete floor when it should be not less than 8 times the pipe outside diameter.
At block brick wall construction brick wall before they do a good job within the piping job, if not into the brick walls of individual tubes, or drawings to be modified to increase the hammer and the wall of the tube, it may not be large-scale destruction of the wall, slotting machine can be used to open chutes, tubes and boxes after the laying of the application of 100 # cement mortar fixed, protective layer should be not less than 15mm
Concealed tubing and open tubing shall be secured and reliable.
开关灯具安装 Switch and Lamp Installation
1室内开关灯具安装 Indoor switch and lamp installation
1.1开关灯具定货 Swith and lamp ordering
Lamps used in this project are provided by party A. Switch manufacturer and switch models shall be selected according to the full-size drawing of switches and the technical specifications of bidding in the work drawing. And then the technical parameter table for each kind of lamp shall be established.
1.2进场验收 Site acceptance check
After the lamps have arrived, strict acceptance check shall be exercised to them so as to examine whether the installation method consists with the requirements of the design, the appearance including coating and accessories are complete, and whether there are quality licenses. And site sample test shall be carried out to examine the performance of insulation resistance and inside wiring, etc.
1.3嵌入式灯具安装 Installation of embedded lamps
Lamps embedded installed include fluorescent lamps and tube lamps of normal lighting system, fluorescent lamps of emergency system, part of the corridor exit lamps and emergency tube lamps. Installation of embedded fluorescent lamps shall applyφ9 round steel as the boom. Installation of embedded fluorescent lamps and air inlets in working area requires coordination of various specialized engineers.
If the lamp is below the air duct and lamp boom cannot be directly installed, an independent support shall be set up instead of directly fixing on the support or flange of the ari duct, etc.
Embedded tube lamps shall be fixed on the decorative keel by their fixtures. If the tube lamp is over 1.5kg in weight, it needs to be fixed byφ6 round steel booms. For tube lamp whose ballast is separated from the lamp body, the ballast needs to be solely fixed.