Pay attention to the suitability of choosing ppe

What is the use of black starter power supply for Weifang diesel generators? Many users are unfamiliar with this term. Let the full power technicians introduce the black start of the diesel generator to the user!

1. Black start refers to when the entire power grid or system is shut down due to a fault, it does not rely on the help of other networks. It starts up the unit with self-starting capability in the system and drives the unit with no self-starting capacity to gradually expand the power system. Recovery scope, and ultimately the entire power system recovery.

2, black start power. Power grid black start power, that is, a unit with self-starting capability, it can quickly resume power generation after outage without external help, send power to other units via transmission lines, and drive other units.

(1) The hydropower generating units (including pumped storage power plants) are the most convenient for starting power. The hydro-generator set does not have a complicated auxiliary machine system. The plant uses less power and has a faster starting speed. It is a convenient and ideal black starting power supply. Hydropower plants also have good frequency modulation and pressure regulation capabilities. However, it should be noted that due to the impact of abundance of dry water, radial hydropower units may not be able to start at certain times.

(2) The thermal power unit can also be used as starting power. For example, the fuel generator can be started quickly when the diesel generator is started. In addition, some thermal power plants can use self-protected power plants when the external power grid loses power. These power plants can all be used as black starting power.

The above is the black start of the diesel generator set introduced by Huaquan Power to the majority of diesel generators users, hoping to help the user.

Air Sickness Bag

Sick Bags,Airline Sick Bags,Airline Barf Bags,Air Sickness Bag

JINAN XINSHUNYUAN PACKING CO., LTD , https://www.xsy-packaging.com

In recent years, China's daily hardware industry has entered the forefront of the world. At least 70% of them are private enterprises, which have broad market and consumption potential and are the main force for the development of China's hardware industry. What are the directions for the development of hardware markets at home and abroad? In the German hand tool market, there are more and more demands. Germans are the most popular tools for comfort and labor. They like to buy smooth handles and beautiful appearances that help grip the tools.

With regard to the types of tools, power tools are now becoming more and more popular. In addition, rechargeable tools have become increasingly popular. The new rechargeable tools currently on the market have multiple battery jacks that can be used in a variety of environments. Due to the increase in the number of new homes in the housing market in the United States at the end of last year, there are still a large number of existing homes that are unoccupied and bring great opportunities for housing renovation. Therefore, the demand for forging tools for distribution of electronic products is strong, especially adjustable wrench maneuvers. The average vehicle model and vehicle age are getting larger and larger, which has played a certain role in promoting the sales of hand tools in the automotive aftermarket.

Domestic hardware tools are based on foreign demand for the hardware industry, and some adjustments can be made to the export sector to expand the foreign market. Taiwan's hand-hardware industry is relatively developed, and in terms of individual hand tool product categories, sleeves are the bulk of exports, followed by Hand tool combinations, the third for garden tools, wrenches ranked fourth, pliers ranked fifth.

Taiwan's hand tools industry has certain advantages in the world by virtue of its stable product quality, timely delivery, and complete product range, which can meet customer needs. Moreover, Taiwan’s hand tool sales are dominated by the off-island market. At present, there are about 5,000 local manufacturers, which are mostly located in the central area of ​​Taiwan Island. In terms of exporting countries, the United States ranked first, followed by the United Kingdom, Germany and Japan.

China's hardware industry has gradually developed into a world-leading hardware processing and exporting country, and has become one of the world's major hardware manufacturers. Among them, at least 70% of China's hardware industry is a private enterprise, which has a vast market and consumption potential and is the main force for the development of China's hardware industry. What are the directions for the development of hardware markets at home and abroad? In the German hand tool market, there are more and more demands. Germans are the most popular tools for comfort and labor. They like to buy smooth handles and beautiful appearances that help grip the tools. With regard to the types of tools, power tools are now becoming more and more popular. In addition, rechargeable tools have become increasingly popular.

The new rechargeable tools currently on the market have multiple battery jacks that can be used in a variety of environments. Due to the increase in the number of new homes in the housing market in the United States at the end of last year, there are still a large number of existing homes that are unoccupied and bring great opportunities for housing renovation. Therefore, the demand for forging tools for distribution of electronic products is strong, especially adjustable wrench maneuvers. The average vehicle model and vehicle age are getting larger, which has played a certain role in promoting the sales of hand tools in the automotive aftermarket.

Taiwan's hand-hardware industry is relatively developed. From the standpoint of individual hand tool product categories, the sleeves are the bulk of exports, followed by the hand tools, the third is the garden tools, the wrenches are ranked fourth, and the clamps are ranked fifth. Taiwan's hand tools industry has certain advantages in the world by virtue of its stable product quality, timely delivery, and complete product range, which can meet customer needs. Moreover, Taiwan’s hand tool sales are dominated by the off-island market. At present, there are about 5,000 local manufacturers, which are mostly located in the central area of ​​Taiwan Island. In terms of exporting countries, the United States ranked first, followed by the United Kingdom, Germany and Japan.

Metering Socket

Metering Socket,Temperature Control Panel Socket ,Metering Wall Socket

Transformer Electric Energy Meter Co., Ltd. , http://www.nswatermeter.com

Several advantages can be achieved: First, technological advantages, SMEs take the road of specialization. One of the leading technologies. The second is the efficiency advantage, increase the efficiency of equipment use, and prevent duplicate construction. The third is management advantages, establishing an efficient management system for a relatively simple production and operation system. As a result, SMEs concentrated their limited resources and specialized in their own professional fields and specialized products to win in the market competition.

The human, financial, and material resources possessed by the company are very limited. In the fierce market competition, it is impossible to win with scale. In particular, it cannot directly confront the large-scale enterprises with the same products. The advantage of a small manufacturing company lies in its professionalism and dedication to win. As Shanghai Aodaco Co., Ltd., it specifically selects high-end fasteners as its product to settle down, and takes the path of professional development.

How many SMEs have evolved after a slight development. They chose to diversify their businesses. As a result, many companies have lost their lives, and some companies have since then slumped or even closed down. After a large number of companies have weathered the market waves, they learn lessons, promptly close their hands, and return to their jobs. Development path. These lessons are very profound.

It is impossible for SMEs to fully counterattack their flagship products and their upstream and downstream products. The reason is very simple. Competing with large companies, it is not possible to obtain comprehensive technological advantages in the main product areas and upstream and downstream areas. It is impossible to establish a comprehensive and complete management system in all these areas. It is impossible to establish a large sales network and sales service network because SMEs have very limited resources. What a small and medium-sized enterprise can do is also necessary to do so only in the manufacture of a product, to do it professionally, to make it deep, and to do fine, so that this product is technically superior to the large-scale enterprise in the same industry, and is more sophisticated and superior. More advanced technology, finer technology, better performance products. This is the advantage of small and medium-sized enterprises competing with large companies. Japan's small manufacturing companies have done very well in this area. A model of learning. Many Japanese small businesses have for decades produced only one product, specializing in one technology and honing a process. Focusing on one area for a long time makes these companies the best in their respective fields. This dedication to a process technology is known as a kind of professional spirit and constitutes a refinement of the prominent features of the Japanese manufacturing industry.

LED Shower

Our goods are popular in Australia, Europe, South Africa, India etc.

Our Ascendency: Perfect after-sale service & Good quality & competitive price & good at the different surface treatment and style

Welcome your inquiry!

Function shower, popular design, reasonbale price with high quality! Pls contact us to get more details.

1) Material:304 stainless steel and brass with chrome plated

2) Function: with LED and different way for water outlet

3) Include:head shower+touch panel controller install accessories.

LED Shower,LED Shower Head,LED Rain Shower,LED Hand Shower

KaiPing HuiPu Shower Metalwork Industrial CO,LTD , https://www.hp-shower.com

In the past two years, the development of China's hardware and mold market has shown good momentum. The hardware industry has become an important area for stimulating consumption and improving economic growth. At this stage, China's mold industry mainly focuses on low-end products. High-end products and key components have not yet been domesticated.

China's metal mold market has broad prospects, and the metal mold industry is developing rapidly. No matter the number of products or the scale of production has a leap-like improvement and development, the sales volume and export volume of molds are increasing day by day. However, China’s huge consumer market continues to attract the attention of foreign hardware molders, and more and more hardware and mold multinational companies are appearing in the Chinese market.

China's hardware and mold industry must not only play a fundamental advantage as a traditional industry, but also continuously promote the upgrading of industrial structure, improve the market competitiveness of high-end products, realize the transition from labor-intensive to technology-intensive industries as early as possible, and shorten the advanced international hardware mold industry. Level difference.

The products produced by traditional industries are necessary for daily production and life, and new types of industries also rely on traditional industries to develop. China's mold industry has such a fundamental advantage. However, with the development of the times, traditional industries need to keep up with the times, carry out industrial transformation and seek new development. There are no backward industries, only backward production methods. Metal mold enterprises should enhance their awareness of innovation, foster professional R&D teams, vigorously develop high-end product R&D technologies, realize localization of high-end products as soon as possible, optimize industrial structure, promote industrial upgrading, develop industrial clusters, enhance the competitive advantage of industry groups, and stabilize the domestic market. , actively explore foreign markets.

As the development of the hardware mold industry matures, how to make the industry have sustainable productivity and competitiveness is an issue that must be considered in the development of the industry and the survival of enterprises. In the fierce competition in the domestic and foreign markets, the hardware mold industry should maintain its own advantages and continue to break through the development bottleneck, so as to grasp the market's right to speak and take the initiative to achieve sustainable development.

Circulating Water Pump

Feed Pump,Cooling Water Pump,Feed Water Transfer Pump

Vacuum Pumps,Circulating Water Pump Co., Ltd. , http://www.nspumps.com

Sewage electromagnetic flowmeter is a fluid measuring instrument developed, developed and produced by our company using advanced technology, featuring high precision, high reliability and long service life. In order to ensure the quality of our products, our company conducts meticulous research and control in the process of product structure, material selection, formulation process, production assembly and delivery, etc., and it is equipped with a complete flow calibration and inspection system. In order to meet the needs of the measurement site, a high-pressure electromagnetic flowmeter system and a plug-in electromagnetic flowmeter system have been developed. In particular, the plug-in electromagnetic flowmeter has a good economy, timeliness, and stability in a large-diameter pipe system. The on-line installation type can be installed, overhauled, and used without interruption. Makes our company's electromagnetic flowmeter system suitable for petroleum, chemical, energy, metallurgy, food, environmental protection, water conservancy and other fields.

First, sewage electromagnetic flowmeter communication method 1, after the connection line to the electromagnetic flowmeter power, enter the parameter setting screen, set the flowmeter communication address and communication speed.

2. On the CD, you can see two folders named "WIN98" and "WINXP". Select one of them according to your computer's system (WIN2000 also uses WinXP). There is a name in the folder. For the "SETUP" file, double-click to enter the installation state, and then follow the prompts.

3. After the installation is complete, you can see a new program named L-mag(51) is added in the start menu program. Click to open the communication test program.

4. Set the communication port on the software (some computers have two serial ports, only one serial port is set to com1), communication address and communication speed make him the same as you set in the electromagnetic flowmeter, click Start.

5. In this way, the corresponding data such as instantaneous flow rate and flow rate will be displayed on your PC. Click the multi-machine communication in the above communication menu to enter the multi-machine display.

6. The software automatically searches for the communication address. Click the menu above to display the data of multiple electromagnetic flowmeters. The data on the comparison computer should be the same as the data displayed by the electromagnetic flowmeter.

Second, sewage electromagnetic flowmeter communication protocol MAG5_MDBRTUV1.3 communication protocol uses the standard MODBUSRTU communication protocol. The MAG511 meter is a slave.

1. RTU mesغير مجاز مي باشدe frame definition The data communication is initiated by the host. The host first sends the RTU mesغير مجاز مي باشدe frame. The mesغير مجاز مي باشدe frame transmission starts with a pause interval of at least 3.5 characters. The first byte of the transfer is the device address. The transfer characters that can be used are hexadecimal 0...9, A...F. All slave devices constantly detect the network bus, including pauses. When the first address byte is received, each device decodes it to determine if it is destined for itself. A pause of at least 3.5 characters marks the end of the mesغير مجاز مي باشدe after the last transmitted character. A new mesغير مجاز مي باشدe can start after this pause.

The entire mesغير مجاز مي باشدe frame must be transmitted as a continuous stream. If there is a pause of more than 1.5 characters before the frame is completed, the receiving device will flush the incomplete mesغير مجاز مي باشدe and assume that the next byte is the address field of a new mesغير مجاز مي باشدe. Similarly, if a new mesغير مجاز مي باشدe starts with the previous mesغير مجاز مي باشدe in less than 3.5 character time, the receiving device will consider it to be a continuation of the previous mesغير مجاز مي باشدe. This will cause an error because the value in the last CRC field cannot be correct. The mesغير مجاز مي باشدe frame definition is as follows:

RTU mesغير مجاز مي باشدe frame basic definition 01234567

Device Address Function Code Address 1 Address 0 Data 1 Data 0 CRC CRC

8-bit byte 8-bit byte 8-bit byte 8-bit byte 8-bit byte 8-bit byte 8-bit byte 8-bit byte 2 Parameter readout command Function code 3: Read holding register (Details see Appendix A modbus protocol description Table 1 page 42)

Host command slave address + function code + desired prefix address + number of desired characters + check digit (CRC)

1byte+1byte+2bytes+2bytes+2bytes

1) Host command format 01234567

Device Address Function Code Address 1 Address 0 Data 1 Data 0 CRC CRC

1~9903000--3501XXXX

Address 1 and address 0 are the upper and lower bits of the word-to-be-read address, and data 1 and data 0 are the upper and lower bits of the number of words to be read.

Slave sendback slave address + function code + number of read words + byte content + check digit (CRC)

1byte+1byte+1byte+nbytes+2bytes

2). Slave response format 0123456

Device Address Function Code Number of bytes Data 1 Data 0 CRC CRC

1~99032 high byte low byte XXXX

Data = 256 * data 1 + data 0;

Note: When reading out, the parameter number is incremented by 1 (defined by the MODBUS protocol). If the parameter number of the host command is 08, the parameter number read out is 09.

Sewage electromagnetic flowmeter

Security Product Parts

Aluminum Alloy Housing Bracket,Aluminum Bracket,Huawei Aluminum Monitor Housing

Light Housing Co., Ltd. , http://www.nsadiecasting.com

With the increasingly fierce competition in the underwear market, enterprises with low added value and lack of brand power will find it more difficult for them. Only those enterprises that have the courage to innovate and create differentiated products can gain broad space for development and achieve new business take-offs.

Underwear as the most dynamic branch of the apparel industry, along with China's rapid economic rise, but also into the rapid development of fast lane, whether it is basic underwear, body underwear or bra, leggings, etc., have become the consumption of Chinese women Hot spots. With the maturity of the underwear market, emerged a lot of high-end underwear brand . For example, Triumph, love, Bai You Ti and so on, especially the Bai You Ti underwear in recent years into the high-end market, underwear brand, with the market by virtue of scientific design, environmental protection fabrics, unique health care features and become high-end market In a wonderful work, opened up the precedent for environmentally friendly underwear.

Once upon a time, the adjustment of Chinese women's underwear by squeezing to gather the breast, creating cleavage, the consequences of wearing such underwear is terrible, as evidenced by the rising prevalence of breast disease among Chinese women. In order to break the bottleneck underwear oppression breasts, Love yarn Clothing Group has always been to care for women's health underwear business indifferent, strong sense of responsibility and mission, forcing yarn group in the shortest possible time to develop a health and prevent breast The functional bra of the disease is Tianyi Ti liquefied titanium bra.

100 gifted li Titanium liquefied titanium bra using ergonomics, fat, aesthetics, color science, design, in the fabric of a bold innovation, the selection of a unique, high-tech titanium liquefied fabric. Titanium is a light metal, non-toxic, harmless, with the ability to regulate the body's natural current through ionization of cells. With this kind of cloth, a bra, when people wear it, as the body temperature increases, the fabric will automatically regulate the body's natural current, promote blood flow, reduce muscle soreness, prevent and eliminate fatigue, prevent breast disease. Is a humanized luxury, noble, elegant, stylish and functional health bra in the history of the development of China's underwear milestone, becoming the high-end lingerie market in 2012 consumer hot spots.

Baiyou Ti liquefied titanium bra, the price between 680-980 yuan, suitable for urban elite women, senior white-collar workers and other high-income people wearing Baiyou Ti liquefied titanium bra not only to meet the urban elite women's material pursuit, but also to meet the spirit demand,

Currently, has become the elite women's underwear consumption benchmark and a new storm.

With the unlimited increase of this elite group of Chinese new rich urban elites, a new blue ocean has emerged in the high-end female bra market. Baiyou Ti liquefied titanium bra under the unique brand differentiation underwear coquettish market, will attract more and more Chinese elite women's attention, let them enjoy the "public to find him thousands of Baidu, Lights dim "at the wonderful state.

Military cap

Kai Hong Caps And Bags Co., Ltd. , http://www.dgsportscap.com

Wardrobe drawer

Laminate-smooth laminates are ideal for storing knitwear and shirts. The distance between the slabs should not be too large, otherwise the stacked clothes are too high, and it is easy to mess with the other when you take one of the clothes. Baskets are used to put T-shirts, which look clear and easy to find. Transparent drawers in front can also achieve this effect. Laminates and drawers are available in a completely pull-out style so that the deepest storage can be easily accessed. Individual laminates in the wardrobe can be designed to be active. When the number of garments increases or decreases, the position can be adjusted at any time.

Hanging wardrobe

The installation height of the clothes rail should be the height of the hostess plus 20 cm. When installing the clothes rail, it should be noted that the clothes rail must be taken within the actual depth of the wardrobe as a standard, and the distance from the top board must be 4-6 cm away, this size must be met, because the distance is too short Afterwards, it will be more difficult to put clothes on the shelves; the distance is too long and space is wasted. Note that the length of each cross should not exceed 120 cm, otherwise there will be problems with the load bearing of the pole.

Wardrobe storage box

The use of storage boxes to store items is easier to categorize, and the names of the items can be marked outside each box. The lidded box prevents dust from contaminating the clothes, and is easy to use even without cabinet doors. The box allows for better placement of irregularly shaped objects, such as some sports equipment. Hats and other incompressible items are also a good way to store them in boxes.

Outdoor Benches

Gaomi Gongji Precise Metal Co., Ltd , http://www.preccastings.com

• Model NO.: ZW-8

                                                                                                                                                                                                                                           

• Lines: 3

                                                                                                                                                                                                                                           

• Seals Mode: Ultrasonic Hot Sealing

                                                                                                                                                                                                                                           

• Continuous-Rolled: Yes

                                                                                                                                                                                                                                           

• Layer: Double

                                                                                                                                                                                                                                           

• Computerized: Computerized

                                                                                                                                                                                                                                           

• Bag Side Width: 70-200 mm

                                                                                                                                                                                                                                           

• Bag Front Width: 240-500mm

                                                                                                                                                                                                                                           

• Machine Size: 11500mm

                                                                                                                                                                                                                                           

• Trademark: ZWE

                                                                                                                                                                                                                                           

• Specification: 11500mm

                                                                                                                                                                                                                                           

• HS Code: 8449009000

                               

• Product Line: PP Non Woven Fabric

                                                                                                                                                                                                                                           

• Voltage: 380V

                                                                                                                                                                                                                                           

• Speed: High

                                                                                                                                                                                                                                           

• Sealing & Cutting: Heat-Sealing Cold-Cutting

                                                                                                                                                                                                                                           

• Machine Type: Bag Forming Machine

                                                                                                                                                                                                                                           

• Type: Non-Woven Bag Making Machine

                                                                                                                                                                                                                                           

• Bag Heright: 200-450 mm

                                                                                                                                                                                                                                           

• Material: Non Woven ( Lamination ) , PP ,Non Woven

                                                                                                                                                                                                                                           

• Certification: Ce , ISO9001

                                                                                                                                                                                                                                           

• Transport Package: by Sea or by Air

                                                                                                                                                                                                                                           

• Origin: China

                                                                                                                                                                                       

Umbrella Developed For Mary Kay

Umbrella Developed For Mary Kay,Promotion Fold Umbrella,3 Fold Umbrella

Foldable Umbrella Co., Ltd. , http://www.straightumbrellas.com

The hardware industry is a traditional industry in China. It started earlier and its development has become more mature. However, the fierce competition in the market and the competitive situation have forced relevant companies in the hardware and mold industry chain to the edge of the cliff and accelerated the development of e-commerce to become a domestic plastic hardware industry. It is an inevitable choice to cope with the challenge of economic globalization, seize the initiative for development, and improve international competitiveness.

In the current hardware industry market, Germany’s market is the largest, and as time progresses, demand is gradually increasing, and according to the nature of the Germans, they are sure to use hardware tools, and Germany must It will become a major market for hardware industry consumption.

With the expansion of the hardware mold market, mold industry parks have been built all over the country. As a new economic phenomenon, more and more attention and attention have been paid to people. Further intensified investment attraction for mold projects and obtained more relevant information, laying a solid foundation for subsequent investment promotion work.

At present, China has entered the top 5 of the world's hardware-producing countries. This is undoubtedly of great significance. In this regard, China has become the main force in world development and can influence the development direction of the world's hardware industry. We all know that China has always been a country with a hegemonic rank, but we must also know that China has always been the strongest importer and exporter country. Therefore, China also has a consumer market and the promotion of the national economy is very huge.

However, it should be noted that while acquiring the market, it is also necessary to pay attention to the development of technology, such as power tools, and especially pay attention to the characteristics of its versatility. This is very important, and it will also become the mainstream of market development in the future. In the final analysis, it is technological development. Whether or not it can occupy a major market, technological innovation, and quality assurance, these two points are the main conditions for development and access to the market in any era.

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In the information age, in addition to telephones, faxes, air conditioners, fire protection, power lines, and lighting wires, a modern building is also indispensable for computer network lines. The integrated wiring system is the foundation of computer network engineering and its importance can be considered. And know. Therefore, the completion and acceptance work of the integrated wiring system project is very important for modern architecture. It must be implemented in accordance with the project's acceptance requirements and work requirements for completion of construction projects, and must not be sloppy and formalistic.

1. Check the contents (1) Whether the civil works of the management room, equipment room and work area have been completed; whether the floor of the house is smooth and smooth; whether the height and width of the door hinder the handling of equipment and equipment; whether the door locks and keys are complete.

(2) Whether the position, quantity and size of the pre-embedded ground tanks, dark pipes, holes and shafts of the house all meet the design requirements.

(3) Whether the ground where the raised floor is laid or the grounding in the anti-static measures of the raised floor meets the design requirements.

(4) Whether 220V single-phase power sockets are provided in the management room and equipment room.

(5) Whether a reliable grounding device is provided in the management room and the equipment room. When installing the grounding body, check whether the grounding resistance value and the grounding device meet the design requirements.

(6) The management room and equipment room area, ventilation and ambient temperature and humidity meet the design requirements.

2. Equipment Inspection Equipment inspection mainly refers to the inspection of various wiring materials, including various cables, connectors, pipes and auxiliary accessories.

(1) Inspection requirements for the device 1) The type, specification, quantity, and quality of the cable equipment used in the project should be inspected before construction. Materials that do not have factory inspection certificate must not be used in the project.

2) Checked equipment should be well documented, and unqualified devices should be stored separately for verification and handling.

3) The cables and equipment used in the project shall comply with the requirements of the order contract, or be in accordance with the specifications, models, and grades of the sealed products.

4) The spare parts, spare parts and all kinds of information should be complete.

(2) Requirements for Inspection of Profiles, Pipes, and Irons 1) The materials, specifications, and models of the various profiles shall conform to the provisions of the design documents. The surface shall be smooth, smooth, and shall not be deformed or broken.

2) When the pipe is made of steel pipe or rigid PVC pipe, the pipe body should be smooth and free from damage, and the pipe hole should not be deformed. The hole diameter and wall thickness should meet the design requirements.

3) When using cement pipes for pipelines, inspections shall be carried out according to the relevant provisions in the construction and acceptance of communication pipelines.

4) The materials and specifications of various iron parts should meet the quality standards and must not be skewed, twisted, splintered, broken or damaged.

5) The surface treatment and plating of the iron pieces should be uniform and complete, the surface should be smooth, and there should be no defects such as shedding or bubbles.

(3) Cable inspection requirements 1) The types and specifications of the twisted-pair cables and optical cables used in the project shall meet the requirements of the design and the contract requirements.

2) The contents of the labels and labels attached to the cables should be complete and clear.

3) The outer sheath of the cable shall be intact and the cable shall be accompanied by a factory quality inspection certificate.

4) The electrical performance of the cable shall be checked from the arbitrary three trays in the batch cable to a length of 100m, and the connectors selected in the project shall be sampled and tested for test records.

5) After the optical cable is opened, check whether there is any damage on the appearance of the optical cable and whether the cable end package is good.

6) When the optical cable is used for the integrated wiring system project, the optical cable certification and inspection test data shall be inspected.

7) When inspecting the patch cord (optical jumper) of the optical fiber, the following requirements shall be met: (1) The end face of the movable connector (joint) at both ends of the patch cord shall be equipped with a suitable protective cap.

2 The type of optical fiber in each optical fiber patch cord should be clearly marked. When selecting the optical fiber patch cord, it should meet the design requirements.

(4) Requirements for the use of distribution equipment 1) The model and specifications of optical cable and cable transfer equipment should meet the design requirements.

2) The layout of the optical cable and cable transfer equipment and the name of the logo should be consistent with the design. All kinds of signs should be unified and the signs should be located correctly and clearly.

3. Equipment installation inspection

(1) Installation requirements for cabinets and racks 1) After cabinets and racks are installed, the vertical deviation should not exceed 3mm. The cabinet and rack installation location should meet the design requirements.

2) The various parts of the cabinet and rack shall not fall off or break. If the paint is peeled off, it shall be filled with paint. The signs shall be complete and clear.

3) The installation of cabinets and racks should be firm. If there are seismic requirements, they should be reinforced according to the seismic design of the construction drawings.

(2) Requirements for installation of various types of wiring components 1) All components should be complete, installed in place, and complete with signs.

2) The mounting screws must be tightened and the panel should remain on a flat surface.

(3) Installation requirements for 8-bit modular universal socket 1) It should be installed on the raised floor or on the ground, and fixed in the junction box. The socket panel is upright and horizontal; the terminal box cover can be opened and should have Waterproof, dustproof and anti-pressure functions. Junction box cover should be flush with the ground.

2) The 8-bit modular universal socket, multi-user information socket, or assembly point wiring quick mounting position should meet the design requirements.

3) The fixing method of the 8-bit modular universal socket base box shall be determined according to the conditions of the construction site, and the preset expansion screw fixing method shall be adopted.

4) The fixing screws must be tightened and should not be loosened.

5) Various outlet panels shall have identifications, indicating the types of terminal devices connected to them in color, graphics, and text.

(4) Requirements for the installation of cable trays and trunking 1) The installation position of the bridge and trunking shall comply with the requirements of the construction drawing, and the left-right deviation shall not exceed 50 mm;

2) The deviation per meter of the level of the bridge and slot shall not exceed 2mm;

3) Vertical bridges and trunkings shall be kept perpendicular to the ground, and there shall be no inclination. The verticality deviation shall not exceed 3mm;

4) The trough cut-off and the two-wire trough splice should be smooth and without burrs;

5) The hangers and brackets should be installed vertically, neatly and firmly, without any skew;

6) Metal bridges and trunking joints should be in good contact with the joints and securely installed;

(5) Install the cabinets, racks, wiring device shields and grounding materials used in metal steel pipes, trunkings shall meet the design requirements, close to the ground, and should maintain a good electrical connection.

4. Cable laying inspection

1) The model and specification of the cable should conform to the design specifications.

2) The laying of cables should be straight and natural, and no twisting, looping, joints, etc., should occur. They should not be squeezed and damaged by external forces.

3) Labels shall be affixed on both ends of the cable, and the number shall be marked. The label shall be clearly written, correct and correct. The label shall be made of materials that are not easily damaged.

4) There should be a margin after the cable is terminated. The reserve length of the twisted pair cable between the handover room and the equipment should be 0.5-1.0m, the work area should be 10-30mm, and the length of the optical fiber cable should be 3m-5m. If there are special requirements, the length should be reserved according to the design requirements.

5. The cable termination inspection cable termination shall meet the following requirements

1) Before the cable is terminated, it must check whether the cable identification content is correct.

2) No connector is allowed in the middle of the cable.

3) The cable termination must be firm and in good contact.

4) The cable termination shall comply with the design and construction operating procedures.

5) When connecting the twisted pair cable to the connector, you should look for the line number and line color mark, and do not reverse or misconnect.

6. Engineering electrical test

(1) The electrical test of the integrated wiring project includes the electrical performance test of the cable system and the performance test of the optical fiber system. The test contents of the cable system are the basic test items and the optional test items. Each test should be recorded in detail as part of the completion of the technical documentation.

(2) The electrical performance tester shall comply with the relevant requirements in terms of secondary accuracy.

(3) The field tester shall be capable of testing Category 3 and Category 5 twisted pair cabling systems and fiber optic links.

(4) The test meter should have an output port to output all stored test data to the computer and printer, and perform maintenance and document management.

(5) Cable and optical cable test instruments shall have certificate of conformity and measurement certificate.

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