202 1 Project Plan Template -202 1 The business plan of the anti-corrosion, thermal insulation and waterproof project is written according to the standard text format commonly used in international practice, which comprehensively introduces the operation of the company and the project, and expounds the future development prospects and financing requirements of the product market, competition and risks.
The abstract part of the anti-corrosion, thermal insulation and waterproof project condenses the essence of the business plan, covers the main points of the plan, and makes the interpretation of the business purpose clear at a glance, which is convenient for readers to review the plan and make judgments in the shortest time.
The introduction of products (services) of anti-corrosion, thermal insulation and waterproof projects is one of the most concerned issues for investors. We have comprehensively analyzed the extent to which products, technologies or services can solve real-life problems and help customers save money and increase income.
The composition and background of the core management team are described in detail in the personnel and organizational structure of the anti-corrosion thermal insulation and waterproof project. It also focuses on key managers, introducing their management ability, responsibilities and responsibilities in the enterprise, their past detailed experience and background. At the same time, the functions and responsibilities of various departments of the company, the heads and members of various departments, the company's salary system, the list of shareholders and the shareholding ratio are also explained.
The market forecast of anticorrosion, thermal insulation and waterproof engineering project expounds in detail whether there is demand for products (services), the degree of demand, whether it can bring expected benefits to enterprises, market scale, future development trend, influencing factors, the current competitive pattern faced by enterprises and main competitors.
The marketing strategy of anticorrosion, thermal insulation and waterproof engineering project combines the characteristics of consumers, products and enterprises and the market environment, fully considers the feasibility of strategy implementation, and comprehensively formulates the selection of marketing channels, management of marketing team, promotion plan, advertising strategy and price formulation.
The financial plan of anti-corrosion, thermal insulation and waterproof projects is closely related to the production plan, human resources plan and marketing plan of the enterprise, and needs to be based on the full analysis of the product (service) cost and output scale. According to the actual situation of the enterprise, we calculated the cash flow statement, balance sheet and income statement in detail.
202 1 Project Plan Template II Project Name: xx
Start time: xx
Prepared registered capital: xx
Project progress: (explain the progress since the project started)
Major shareholder: (The list shows the name, amount, form, unit and contact number of the current shareholder. )
Organization: (represented by chart)
Main business: (the main business to be operated. )
Profit model: (explain the business profit model of this project in detail. )
Development strategy and business objectives for the next three years: (industry position, sales revenue, market share, product brand, etc.). ).)
2. 1 establishment of the board of directors of the company: (director, name, position, work unit, contact number)
2.2 Profile of senior management: Chairman, General Manager, Chief Technology Officer, Chief Marketing Officer and Chief Financial Officer (name, gender, age, education background, major, professional title, graduate school, telephone number, main experience and achievements, mainly explaining management experience and successful cases in this industry. )
2.3 Incentive and restraint mechanism: (What kind of incentive mechanism and measures will the company take for management and key personnel? )
4. 1 Technical feasibility and maturity analysis of the project
4. 1.2 Discussion on technical innovation of the project
(1) Basic principles and key technical contents
(2) Technological innovation
4. 1.2 project maturity and reliability analysis
4.2 R&D performance and main technical competitors of the project: (Whether the products have been appraised by international and domestic industry authorities and institutions at all levels; Domestic and international situation, domestic and foreign competitors of the project in technology and product development, and measures taken by the project to improve competitiveness. )
4.3 Follow-up R&D plan: (Please explain the research and development focus of the project and the new products developed in the next three years to ensure product performance, product upgrade and maintain advanced technology level. )
4.4 R&D investment: (List the total investment in technical development of the project up to now, how much development funds are planned to be invested again, annual purchase of development equipment, personnel expenses and other development-related expenses. )
4.5 Technical resources and cooperation: (Whether to seek technical development support and cooperation for the existing technical resources and technical reserves of the project, such as universities and research institutes, etc. , if yes, please explain the mode of cooperation. )
4.6 Technical secrecy and incentive measures: (Please explain what technical secrecy measures and incentive mechanisms have been adopted for the project to ensure the safety of technical documents of the project and the stability of key technicians and technical teams. )
5. 1 industry status: (development history and status quo, which changes have a greater impact on product profits and profit margins, technical barriers, trade barriers, policy guidance and restrictions on entering the industry, etc. )
5.2 Market prospect and forecast: (Forecast the sales development of the whole industry, and indicate the data source or basis. )
5.3 Target market: (Please specify the main types of users targeted by the products/services. )
5.4 Main competitors: (explain the main competitors in the industry, mainly describe the competitors in the main sales market, their market share, competitive advantages and disadvantages)
5.5 market barriers: (Please explain whether there are any industry regulations on marketing, the difficulty for the company's products to enter the market and the countermeasures).
5.6SWOT analysis: (Advantages and disadvantages, opportunities and threats faced by products/services compared with competitors)
5.7 sales forecast: (forecast the company's sales revenue and market share in the next three years)
6. 1 price strategy: (composition of sales cost, basis for formulating sales price and discount policy)
6.2 Marketing strategy: (Please explain the strategies and implementation methods in establishing sales network, sales channels, advertising and promotion, setting up agents and distributors, after-sales service, etc.).
6.3 Incentive mechanism: (explain the strategies and methods of establishing a high-quality sales team, and what kind of incentive and restraint mechanism is adopted for sales staff)
7. 1 product production (whether the production mode of the product is self-produced or commissioned processing, production scale, production site, technological process, production equipment, quality management, raw material procurement and inventory management, etc.). )
7.2 Production staffing and management
9. 1 financing quantity and rights and interests of equity SMEs: (the number of venture capital participating in this project, other sources and quotas of funds, and the rights and interests of all investment participants of the company)
9.2 Use and plan of funds: (Please list the project implementation plan after the financing of small and medium-sized enterprises, including the progress, effect and start and end time of capital investment, etc. )
9.3 Return on investment: (explain the average annual return on investment of SMEs in the next 3-5 years after financing and relevant basis. )
9.4 Financial forecast: (Please provide the balance sheet, income statement and cash flow statement of the project forecast for the next three years after the financing of small and medium-sized enterprises, and explain the basis for compiling the financial forecast data. )
1 1. 1 Main risks: (Please specify policy risk, R&D risk, operation and management risk, market risk, production risk, financial risk, exchange rate risk, dependence on key personnel of the project, etc. ).)
1 1.2 risk countermeasures: (If the above risks exist, please explain the control and prevention countermeasures. )
202 1 Project Plan Template III System Overview;
The pipeline of this project is concealed in PVC pipe wall and floor, and the power supply pipeline is galvanized steel pipe.
1, construction sequence
According to the conventional construction method, cooperate with civil construction from bottom to top. Pipes in concrete slabs, walls, beams and columns shall be constructed with the main body construction progress, and pipes in masonry shall be constructed with the masonry construction progress. Some pipes can't be embedded, so they should be buried after the masonry reaches a certain strength.
2, the construction process
1. Process flow of underground pipe laying: construction preparation → prefabrication → pipeline box identification → pipeline box positioning → pipeline connection → pipeline box reinforcement.
2. Open pipe laying process: construction preparation → prefabrication → pipeline marking → pipeline connection.
3, the construction method
1. Bend pipe: PVC pipe is bent with a pipe bender, and steel pipe is welded with a punching elbow.
2. Pipe cutting: hand saw for small diameter and pipe cutter for large diameter.
3. Pipe connection: (PVC pipe): Special FST series connectors, FSJ/Q series lock nuts and special adhesive are used.
4. Fixing of concealed pipes and boxes: fixing inside the board, and firmly fixing the boxes in the wooden mold with nails and thin iron wires. Steel formwork is fixed with high-grade cement mortar. The wire boxes on the walls and columns shall be bound and fixed. The pipeline is bound and fixed with iron wire and steel bar at a fixed distance of 1 m, and the steel bar is bound within 150mm beside the box. The fixed distance between the pipe clamp of the exposed pipe and the pipeline is 150 ~ 500mm, and the distance between the pipe clamp and the middle of the bend and the edge of the appliance or box is set according to Table 14.2.6 of Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002). If the number of conduits entering the lamp holder box and the switch box exceeds 4, the large box should be selected.
5. Laying of concealed electrical piping: When laying piping, pay attention to that the bending radius of the pipeline is not less than 10 times of the external diameter of the pipeline. When the pipeline length is ≥30m without bend, ≥20m with one bend, ≥ 15m with two bends and ≥8m with three bends, a junction box shall be added. A single pipe layout cannot have four elbows. When laying pipelines buried in concrete walls or underground, they should be attached to the inside of steel bars and fixed with steel bars to minimize the overlapping height. It should be noted that the pipeline must have at least 15mm protective layer.
6. Laying of electrical exposed piping: When laying exposed piping, pay attention to that the bending radius should be more than 6 times of the pipe outer diameter. Pipeline layout should be straight.
7. Grounding wire connection: After piping, cross grounding wire should be made at the connection between power pipe and boxes. The grounding wire of welded steel pipe is connected with φ 6 round steel jumper, and the welding length is not less than 6 times of the steel pipe diameter, and it is welded on both sides.
4. Key points of construction quality control
1. The key point of electrical pipeline embedment in this project is the pipeline embedment on concrete floor of toilet floor. Because the water supply pipes in the toilet of this project are all buried underground, once the pipes in the board are blocked, the secondary piping will inevitably affect the laying of the water supply pipes. Therefore, it is necessary to ensure that the permeability of the distribution pipe in the plate reaches 100%. During construction, attention should be paid to the firmness of pipelines and the quality of joints. When welding connection, attention should be paid to ensure that the sleeve length is 2.2 times of the pipe diameter, the pipe diameter should match the pipe diameter, and the counterpart should be set in the middle of the steel pipe. After the wire tube is connected to the plastic pipe joint, wrap it with tape.
2. Layout of concealed electrical pipelines: attention should be paid to avoid the position where water supply, drainage or other professional risers pass through the floor, especially the pipelines in the bathroom floor. When piping on concrete walls and columns, in order to ensure the accuracy of the elevation of the same room, secondary nozzles are adopted, and corresponding grooves are reserved on the concrete walls. The piping work will be carried out after civil construction. Pay attention to the finished product protection of ground pipe throwing and roof switch to prevent pipe blockage. Masonry structure piping, as far as possible and masonry construction at the same time. If there is no piping at the same time, it can be laid with a cutting machine after the masonry strength comes up. Note that the groove width should not be greater than 5mm of the outer diameter of the pipe. After pipeline laying, the groove shall be sealed with cement mortar with higher grade than masonry mortar.
3. Layout of switch, socket and lamp holder box: the position of lamp holder box should be centered indoors. Pay attention to the distance between switch box and doors and windows, consider the installation size of decorated back door (window) cover, and pay attention to whether the position of socket box is affected by radiator or radiator. The embedded height of boxes of the same category in the same room should be consistent. When embedding boxes in concrete walls and columns, the size of embedded holes can be appropriately increased before embedding to facilitate adjustment during installation.
4. Connection of electrical piping: When PVC pipes are used for concealed piping, attention should be paid to ensure that the length of the casing is 2.2 times of the pipe diameter, and the pipe diameter of the casing should match the pipe diameter.
5, multiple pipes into the box side by side, the spacing should be uniform, neatly arranged; When the pipe enters the box, the inside and outside of the box should be fixed with locking nuts; The pipelines entering the floor-standing distribution box should be arranged neatly, and the nozzle should be 50 ~ 80 mm higher than the foundation ground.
6. Before construction, professional and technical personnel shall prepare systematic special technical disclosure according to the design drawings and the contents of the blue prints.the design, and implement it after being approved by the project engineer and the quality inspector. In the whole process of electrical pipeline construction, professional technicians and quality inspectors should check according to the requirements of construction drawings and Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002). After inspection, post the quality inspection sheet and indicate the inspection data, and then report it to the supervision unit for acceptance.
5. Installation of conduit wiring
1 construction sequence
In-pipe threading shall be carried out after the completion of pipeline engineering or trunking installation engineering.
2 process flow
The threading process in the conduit: cleaning the pipeline → threading lead wires → selecting lead, matching colors → setting out → tying lead wires → threading → disconnection → insulation testing.
3 Construction method
1, Cleaning the pipeline: Before threading, clean the accumulated water and sundries in the pipeline and trunking with a cloth head.
2. Threading in the pipe: After threading with steel wire, guide the steel wire into the pipe, and be careful that there are no kinks, joints, broken wires or back threads in the pipe.
3. conductor phase separation: phase separation and color separation shall be carried out according to the design drawings and the requirements of GB50303-2002No. 15.2.2.
4. Wire disconnection: the reserved length of wires in the box is 150mm, and the reserved length of wires in the distribution box is 65438+ 0/2 of the circumference of the distribution box.
5. Conductor connection: Tin-rinsing winding method is adopted for connection. When winding, ensure the contact area and mechanical strength, and wind for at least 5 times. The solder should be full and smooth, free from virtual welding and slag inclusion, and the solder should be uniform. The joint should be clean, the humidity of tin washing should be controlled, and the burning loss of the insulation layer of the wire should be reduced as much as possible. The gap between the two should be wrapped with insulating tape. Immediately after tin cleaning, wrap it with rubber insulating tape inside and black tape outside.
6. Insulation test: After threading, shake test the insulation of the line, using a 500V megohmmeter with a range of 1 ~ 500mω. Insulation resistance of lighting circuit shall not be less than 0.5MΩ, and insulation resistance of power circuit shall not be less than1mΩ.
4 construction quality control points
1, attention should be paid to threading in the pipe, and the boxes and boxes should be clean without sundries. Mouth protectors and wire protectors shall be complete and firmly installed, and the wires shall be securely tied, with good insulation and no damage to the wire core.
2. After threading, put the connector into the box. Do a good job of finished product protection, lock the distribution box door, and install the temporary cover plate on the box before installing the panel.
3. Before construction, professional and technical personnel shall prepare systematic special technical disclosure according to the design drawings and the contents of the blue prints.the design, and implement it after being approved by the project engineer and the quality inspector. During the whole process of wiring installation and construction in conduit, professional technicians and quality inspectors should check according to the requirements of construction drawings and Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002). After inspection, post the quality inspection sheet and indicate the inspection data, and then report it to the supervision unit for acceptance.
6 electrical lighting and appliance installation
1 construction sequence
The cleaning of ceiling, wall decorative coatings and ground is drawing to a close, the threading work in the pipe is over, and the installation work can be fully carried out.
2 Installation process of lamps
Inspection of lamps and lanterns → assembly → installation of lamps and lanterns → power-on debugging.
3 Construction method
1. Inspection of lamps: Visual inspection shall be conducted before installation of lamps to ensure that lamps are intact. The direction of emergency lights should be correct, reliable and sensitive.
2. The wiring inside the lamp is strictly prohibited from being exposed, and the lamp fittings are complete, without mechanical damage, deformation, paint peeling, cracking and warping of lampshades and light boxes.
3. Installation of lamps: BV-2.5mm2 conductor should be used as PE protection wire for the metal shell of lamps with a height less than or equal to 2.4m from the ground. Lamps and lanterns should be installed firmly and correctly. For lamps with suspended ceiling or lamps weighing more than 3Kg, independent suspenders or embedded parts shall be added on the roof to bear the full weight of lamps. The wooden platform for installing lamps and lanterns on the ceiling shall be installed after the civil works are finished, and the wooden platform shall be installed firmly without gaps and black edges. For fluorescent lamps installed in rows, when the lamp holder boxes are embedded, pay-off should be made first, and the spacing position should be kept according to the lamp type. The allowable deviation of the center line of lamps and lanterns installed in rows is 3 mm
4. Before construction, professional and technical personnel should prepare the special technical disclosure of this project according to the design drawings and the contents of the blue prints.the design, and implement it after being approved by the project engineer and the quality inspector. In the whole process of electrical lighting and appliance installation, professional technicians and quality inspectors should check according to the requirements of construction drawings and Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002). After inspection, post the quality inspection sheet and indicate the inspection data, and then report it to the supervision unit for acceptance.
7 switch, socket and user terminal installation
1 construction sequence
The cleaning of ceiling, wall decorative coatings and ground is drawing to a close, the threading work in the pipe is over, and the installation work can be fully carried out.
2 construction process flow
Cleaning boxes → wiring → installation → power-on trial operation.
3 Construction method
1. installation of switch, socket and user terminal: the installation of switch and socket is concealed according to page JD8- 108. Switch wiring should be correct, and the switch must cut off the phase line. The switch position should be consistent with the lamp position, and the opening and closing direction of the rocker switch in the same unit project should be consistent. The switch edge is l50~200mm from the door frame to the ground 1.4m, and the same indoor installation shall be parallel ≤5mm, with rows ≤0.5mm and verticality ≤ 0.5mm.. The installation height of concealed sockets is 2 mm or less according to the design requirements, and the same indoor installation requirements are consistent.
2. When the single-phase two-hole socket is installed horizontally, it is "left zero and right fire" when facing the socket, and "zero fire" when facing the socket vertically. Single-phase three-hole and three-phase four-hole protective grounding wires are all on it.
3. The protective wires of all sockets shall be copper core wires with the same cross-sectional area and insulation grade as the phase wires. All kinds of wires in the distribution line shall not be connected to other branches with socket pressure wires at the terminals of switches and sockets.
4, switch, socket, user terminal installation height, spacing control should be consistent. Switch wiring should be correct, and the switch must cut off the phase line. The switch position should be consistent with the lamp position, and the opening and closing direction of the rocker switch in the same unit project should be consistent.
5. During construction, it should be noted that the screws of the panel are galvanized pieces, which are close to the building surface when installed, do not eat walls, and have no black edges and gaps. When the box depth is greater than 150mm, it shall be treated as a set of edges.
6. Before construction, professional and technical personnel should prepare the special technical disclosure of this project according to the design drawings and the contents of the blue prints.the design, and implement it after being approved by the project engineer and the quality inspector. During the whole installation process of switches, sockets and user terminals, professional technicians and quality inspectors should check according to the requirements of construction drawings and Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002). After inspection, post the quality inspection sheet and indicate the inspection data, and then report it to the supervision unit for acceptance.
8, distribution box (cabinet) installation
1 construction sequence
Dark distribution box should be installed before civil plastering.
2 process flow
Installation process of low-voltage distribution box: unpacking inspection of equipment → equipment handling → elastic line setting → distribution box installation → grounding installation → surface-mounted (concealed) distribution box (panel) fixing → secondary control line adjustment and simulation test → acceptance of power transmission operation.
3 Construction method
1, order according to the design requirements, reserve the hole size of the distribution box, find the elevation, horizontal and vertical, and fill the box with mortar.
2. Fix the concealed distribution box: install the distribution box in the reserved hole, and find the elevation and horizontal dimension of the box. After the box body is stable, arrange the water inlet pipes neatly, fill the periphery with cement mortar and smooth it, and then install the disk surface and stick the face after the cement mortar solidifies. If the bottom of the box is flush with the external wall, fix the metal mesh on the external wall before plastering the wall. Shall not be directly attached to the bottom plate of the box. The surface of the installation disk should be flat. The peripheral clearance is even and symmetrical, the surface (door) is straight and not skewed, the vertical stress of screws is even, the box body is stable, and the piping is straight.
3. The color separation of each phase conductor is clear and the color distinction is consistent. The tin-rinsing part of the multi-strand conductor is wound with insulating tape with the same color as the conductor, and the winding length is the same. The entrance of the conduit needs to be protected by plastic.
4. Before construction, professional and technical personnel should prepare the special technical disclosure of this project according to the design drawings and the contents of the blue prints.the design, and implement it after being approved by the project engineer and the quality inspector. In the whole installation process of distribution box (cabinet), professional technicians and quality inspectors should check according to the requirements of construction drawings and Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002). After inspection, post the quality inspection sheet and indicate the inspection data, and then report it to the supervision unit for acceptance.
9 grounding construction and installation
1 system overview
In this project, TN-S combined grounding body is used to protect equipment from grounding, and all kinds of metal pipes are equipotentially grounded by grounding device, and the grounding resistance is not greater than 1ω. Equipment protective grounding, equipotential grounding of various metal pipelines, etc. * * * Grounding device shall be provided, and the grounding resistance shall not be greater than 1ω.
2 Construction sequence
The lightning protection and grounding system of this project shall be constructed in accordance with the conventional construction methods and civil construction progress. The foundation grounding grid and down lead are laid from bottom to top with the main body. Local equipotential bonding should be carried out after the installation of water supply and drainage pipelines.
3 construction technology
Installation of foundation grounding grid → installation of lightning protection downlead → installation of lightning arrester and horizontal lightning protection grid → equipotential bonding → grounding resistance test.
4 construction method:
1. Welding of foundation grounding grid and lightning protection belt (grid): All welding work shall be carried out by welders with welding qualifications, and the connection between flat steel and round steel shall be lap welded, with the lap length of flat steel being twice the width of flat steel and welded on three sides. The lap length of round steel is 6 times that of round steel, and it is welded on both sides. Flat steel and round steel are welded, and the lap length is 6 times that of round steel. When welding flat steel and steel pipe (angle steel), first bend the flat steel into an arc or a right angle, and then weld both sides on the steel pipe or angle steel. Paint after removing the welding slag from the welding place.
1. Foundation grounding grid: According to the design requirements, two adjacent steel bars with diameters greater than φ 16 in the column should be welded with the bottom plate steel bars by lap welding. And mark the main reinforcement in the column. Install the grounding test disconnect card on each down lead 0.3 ~ 0.5m from the ground. When steel bars and columns in concrete are used as natural down leads and foundation grounding bodies are used at the same time, disconnection cards are not required. However, when steel bars are used as down leads, several connecting plates should be set at appropriate positions indoors and outdoors, which can be used for measurement and equipotential connection. Its upper end should be welded with connecting plate or steel column. The connecting plate shall be clearly marked, and concealed acceptance records shall be made.
2. Equipotential method: The project adopts general equipotential connection, and the general equipotential plate adopts TMX-500×25×4 copper plate, which is located under the general distribution box, and all metal pipes entering and leaving the building are connected with the equipotential system. The total equipotential bonding line adopts -40×4 hot-dip galvanized flat steel, and the total equipotential bonding adopts various types of special equipotential clamps, and welding on metal pipes is not allowed.
5. The underground steel mesh must be connected with the equipotential box connecting wire, and the embedded connecting plate and the lead-out terminal plate should cooperate with the civil engineering specialty. The embedded connecting plate is located at the corner of the concrete column, and the wiring board is led out through the wall.
6. Equipotential bonding wire is connected to the metal part of sanitary ware with metal hoop, and the contact surface between hoop and pipeline must be scraped clean, and protective paint should be painted after installation. The embedded parts are close to the installation position of sanitary equipment. For wires larger than BV-4mm2, install sanitary equipment and connect embedded parts with galvanized bolts. The copper wire needs to be protected in the wall or on the ground and connected to the LEB terminal board.
7. Local equipotential bonding: The practice of equipotential bonding should be strictly in accordance with the requirements shown in the drawings, and pay attention to the welding quality and flatness of flat steel. The connection with equipment grounding should be in place.
8. Before the project starts, professional and technical personnel shall prepare the system's special technical disclosure, which shall be implemented after being approved by the project engineer and quality inspector. In the whole process of construction, professional technicians and quality inspectors should check according to the requirements of construction drawings, Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002) and Code for Construction and Acceptance of Grounding Device of Electrical Device Installation Engineering (GB50 169-92). After passing the inspection, post a quality inspection sheet indicating the inspection data and report it to the supervision unit for acceptance. 15 equipment system debugging
1, lighting system debugging: test the insulation resistance of each loop, which should not be less than 0.5MΩ. The lamp wire of the lamp can't bear the tension, and the lighting switch must be sensitive and reliable.
2. The installation of switches, sockets and user terminals should meet the design requirements. Switches installed in the same area should have the same opening direction, flexible operation and reliable contact. All sockets need to be fully inspected by the calibrator to meet the specification requirements, and the reliability of the leakage protector should also be simulated. The connecting wire of the user terminal must be reliable and contact correctly.
5. The elevation error of lamps installed in rows shall not exceed 3mm. The switch must control the phase line, and the system can only turn on the lighting, public lighting and continuous commissioning test for 24 hours after the load inspection is qualified. And record the running status every 2 hours, and the continuous time is trouble-free.
6. When the insulation resistance of low-voltage distribution box and cabinet circuit is10mΩ, 2500V megohmmeter shall be used for voltage withstand test 1min, and there is no flashover and breakdown.
7. If there is no abnormal phenomenon in the trial run for 24 hours, it shall be reported to the supervision engineer, and at the same time, the relevant electrical product certificates, specifications, change negotiation records, test reports and user's electricity specifications prepared by the contractor shall be submitted.
8. Equipotential bonding test: Conduction test shall be conducted after installation, and DC or AC power supply with no-load voltage of 4 ~ 24V can be used for the test. The test current should not be less than 0.2A When the resistance between the terminal board of equipotential bonding and the end of metal body such as metal pipe within the scope of equipotential bonding is not more than 3 Ω, it can be considered that equipotential bonding is effective. If it is found that the pipe connection has poor conductivity, the jumper should be re-tested.
9. Detection of grounding device: The specification, material, installation position, connection quality, spacing, quantity, buried depth, connection mode of grounding electrode, corrosion protection, etc. should be checked for grounding device. Check the number, specification, lap length, welding quality and welding conditions of the connection points between the grounding down lead and the grounding electrode made of structural steel bars. Check with a grounding resistance tester, and conceal it after reaching the design of 1ω.