Can the electrical equipment manufacturing inspection scheme be used as a protocol?

It reads as follows:

1. Clarify the test object. The electrical system contains a wide range of content, only by clarifying the detection object, can we avoid the blindness of the electrical fire safety testing work, and will not include the objects that do not belong to the scope of electrical fire safety testing into the testing work.

There are two main types of electrical fire safety inspections: electrical equipment and electrical circuits. Electrical equipment includes substation and distribution facilities, electrical equipment and electrical control devices. Electrical circuits include power supply and distribution lines, grounding devices, and line protection devices and measures (e.g. pipe penetration measures);

2. Delineate the testing items. On the basis of the test object, the test items of different test objects are delineated. From a practical point of view, electrical safety accidents do not only include fire safety, and their testing items should have their own limitations rather than being an all-encompassing and non-specific universal specification.

The test items of electrical fire safety testing should only be related to fire safety. For example, electrical overheating, heat accumulation, discharge, insulation or grounding faults and lack of protection measures should be important contents of the test items;

3. Clarify the testing methods, procedures and tools, which is an important part of standardizing electrical fire safety testing. Only when all testing institutions carry out their work in accordance with the testing methods, procedures and tools specified in the specifications can they effectively ensure the scientific and reliable testing results.

Detection methods can be divided into visual inspection and appliance inspection. The testing tools should include a variety of electrical measuring instruments and special equipment for measuring the possibility of overheating or discharging;

4. Clarify the standardized technical requirements of the tested object and the comparison and judgment method of the test results. The standardized technical requirements of the tested object are the specification requirements of electrical installation, and the test results are compared with them to draw a conclusion about whether they meet the fire safety requirements, so as to finally determine whether the system meets the fire safety requirements.

When making a judgment, the non-conformities should be divided, which are generally divided into general defects and critical defects, and the test results should be judged to be qualified, basically qualified and unqualified according to the number of defects.

Scope of work for electrical fire safety inspection:

1. New buildings;

2. The used building for the renovation or alteration of electrical lines or facilities;

3. Used buildings that have reached the detection cycle; All kinds of electrical circuits and facilities have a certain lifespan, according to this law, a detection cycle can be formulated, and testing is required when it expires, so as to effectively ensure electrical fire safety and minimize the possibility of electrical fire;

4. Establish the legal status of the public security and fire protection agencies to carry out law enforcement supervision of electrical fire safety inspection. Electrical fire safety inspection is a part of the fire protection work, and the work should be guided and supervised by the public security and fire protection agencies of the specific implementers of the fire protection work.

Clarifying the competent department of electrical fire safety testing is the premise for the implementation of management and supervision of electrical fire safety testing in accordance with the law and bringing it into the legal track.

The CAN protocol is used to communicate between a variety of different components in a car as a replacement for expensive and bulky power distribution harnesses. The robustness of this protocol extends its use to other automation and industrial applications. Features of the CAN protocol include complete serial data communication, real-time support, transmission rates up to 1MB s, 11-bit addressing, and error detection.

Electrical testing is generally an electrical fire safety test, electrical fire safety testing is based on the electrical facilities in the process of operation of thermal radiation, acoustic emission, electromagnetic emission and other modern physical phenomena, the use of international advanced high-tech instruments, equipment, combined with traditional inspection methods for all-round quantitative monitoring of electrical facilities.

The scope of electrical fire safety testing is mainly aimed at power users, that is, new, reconstructed and expanded industrial and civil buildings with voltage levels of 10kV and below, and the detection of high-voltage and ultra-high-voltage power supply systems above 10kV should be carried out by the power system. In addition, the electrical fire safety inspection of the most dangerous places should be cautious, and the company that has not carried out fire and explosion prevention professional knowledge training should not undertake this test.

Electrical testing refers to electrical fire safety testing. Electrical fire safety testing is based on modern physical phenomena such as thermal radiation, acoustic emission and electromagnetic emission in the operation of electrical facilities, using international advanced high-tech instruments and equipment, combined with traditional inspection methods to carry out all-round quantitative monitoring of electrical facilities.

In the past decade, the incidence of electrical fires has remained high and even increased (as shown in the table below). The development of society needs to have a unit that can provide electrical fire safety inspection services to detect unsafe factors in electrical aspects as soon as possible.

Analysis of the causes of electrical fires:

1. Leakage: The insulation ability of the wire or its bracket material is poor, so that there is a trace of current passing between the wires or between the wires and the earth, and the leakage electric spark can become the ignition source of the fire;

2. Short circuit: On the electrical circuit, due to various reasons, two points with different potentials are connected or collide, resulting in a sudden increase in current.

3. Excessive contact resistance: At the connection of the power line and the connection between the power line and the switch, protection device and larger electrical equipment, the local resistance of the contact part is too large due to poor contact.

Condition monitoring of equipment and systems to detect early signs of failure in time, so that operation and maintenance personnel can eliminate hidden dangers as soon as possible through detection methods when the accident is in the embryonic state, so as to avoid the occurrence of malignant accidents.

Guangdong Zhongjielong fire electrical testing is careful and efficient, and the report is fast.

Adjust the test run! To put it simply, the state of the simulation runtime checks if there is a problem with the cabinet!

Electrical testing is to carry out systematic testing of high and low voltage distribution systems, power distribution systems, lighting distribution systems, lightning protection and grounding systems, cable television systems, equipment monitoring systems, safety prevention systems, automatic fire alarm systems and fire linkage systems, and integrated wiring systems in accordance with relevant technical standards and specifications, so as to ensure the safety of electricity and the safe operation of electricity.

Testing standards: The basis of electrical testing should be the current national or local technical standards and specifications, such as "Basic Standards for Low-voltage Electrical Appliances" GB 1497 1985, "Lamps and Lanterns Safety Requirements and Experiments" GB 7000 1996, "Low-voltage Power Distribution Design Code" GB 50054 1995, "Code for Construction and Acceptance of Low-voltage Electrical Appliances in Electrical Installation Engineering" GB 50254 1996, etc. The standard of judgment shall be subject to the specific provisions of national technical standards and specifications.

Guangdong Zhongjielong fire electrical testing authoritative testing.

Now the correct name should be: electrical fire protection technology testing.

Through modern detection technologies such as infrared detection equipment (such as infrared thermal imaging cameras) and ultrasonic detection equipment (such as ultrasonic detectors), non-contact detection can be carried out under the normal operation of the electrical system, and overheating and spark discharge parts can be quickly found. The combination of modern detection technology and traditional electrical fire safety inspection methods has formed a set of more systematic and standardized on-site testing methods, and through the data processing and image analysis of the test records, the nature, cause and danger of fire hazards in different parts of the electrical system can be correctly judged.

1. Infrared diagnosis of live equipment of electrical system (overload, overcurrent, heating, ignition, etc.);

2. Grounding resistance detection of electrical system;

3. Detection of residual current action protection device of electrical system;

4. Insulation resistance detection of electrical system (power failure detection is required);

5. The installation of substation and distribution system buildings and terminals;

6. Wiring of indoor low-voltage distribution lines, installation of power and lighting distribution boxes, switches and sockets;

7. Laying of lines in the ceiling;

8. Grounding and equipotential bonding of electrical equipment;

Shenzhen Neutral Safety Testing****Professional third-party electrical fire protection technology testing organization, you can contact if necessary.

You can find out about Guangdong Zhongjielong fire electrical testing **** can solve this problem for you in all aspects of professional guidance Guangdong Zhongjielong fire electrical testing **** do fire safety inspection, fire protection facilities testing, electrical fire detection is better, the company specializes in building fire protection facilities testing, fire equipment maintenance, fire construction inspection and other fire technical services, with fire detection and maintenance of a qualification and CMA measurement certificate, to be a professional electrical fire testing organization; The company adheres to the quality policy of "scientific and accurate, fair and honest, continuous improvement, and customer satisfaction", and is the first batch of third-party testing companies to obtain fire technical service institutions.

Notice of the Shenzhen Municipal Fire Safety Committee on Carrying out Building Electrical Fire Safety Testing in the City (Shenzhen Consumer Safety Committee No. 17 2013). As well as the "Shenzhen Municipal Safety Supervision and Administration on the city's electrical circuit fire safety inspection No. 22 document", the building age is more than 10 years, and the building premises are in use or open for more than 2 years of the following units (places) for building electrical circuit fire safety testing.

1. Test object.

1) Places of public entertainment;

2) Guesthouses, hotels, restaurants, department stores, supermarkets, bazaars, stadiums and other public gathering places;

3) Labor-intensive factories, enterprises, and collective dormitories for employees;

4) Places for the production, filling, storage, and sales of flammable and explosive chemical dangerous goods;

5) Schools, kindergartens, hospitals, nursing homes;

6) Passenger stations, wharves, and port of entry and exit buildings;

7) Public libraries, exhibition halls, museums, archives and cultural relics protection units with fire hazards;

8) "Three small" places and rental houses.

Second, the content of the test.

1) Infrared diagnosis of live equipment of electrical system;

2) Grounding resistance detection of electrical systems;

3) Detection of residual current action protection device of electrical system;

4) Insulation resistance detection of electrical systems;

5) The installation of substation and distribution system buildings and terminals;

6) Indoor low-voltage distribution line wiring, power and lighting distribution box, switch and socket installation;

7) the laying of the line in the ceiling;

8) Grounding and equipotential bonding of electrical equipment, etc.

The main content of electrical safety inspection: according to the modern physical phenomena such as thermal radiation, acoustic emission and electromagnetic emission in the operation of electrical facilities, the use of international advanced high-tech instruments and equipment, combined with traditional inspection methods to carry out all-round quantitative monitoring of electrical facilities.

Status: In the past decade, the incidence of electrical fires has remained high and even on the rise.

Purpose: To reflect the existence, danger degree and accurate location of electrical fire hazards more comprehensively, scientifically and accurately, and put forward corresponding rectification measures in time, so as to eliminate hidden dangers and avoid the occurrence of electrical fire accidents.

The main content of electrical safety inspection is: all-round quantitative monitoring of electrical facilities.

Electrical fire safety testing is based on the heat radiation of electrical facilities during operation.

Modern physical phenomena such as acoustic emission and electromagnetic emission are used to carry out all-round quantitative monitoring of electrical facilities by using international advanced high-tech instruments and equipment, combined with traditional inspection methods.

In order to reflect the existence, danger degree and accurate location of electrical fire hazards more comprehensively, scientifically and accurately, and timely put forward corresponding rectification measures, so as to eliminate hidden dangers and avoid the occurrence of electrical fire accidents.

We refer to the relevant experience of developed countries, the introduction of international advanced level of testing instruments and equipment, through a full range of quantitative monitoring of electrical facilities, and a comprehensive and accurate reflection of the accurate location of electrical fire hazards, the traditional inspection work to a new scientific height. It has achieved the scientific, mapped and data-based identification of electrical fire hazards, which is the result of scientific and technological progress.

No, modbus is an upper-layer protocol, and the underlying layer generally uses 485 485 and 232 are also low-level protocols, but the level specifications are different, so the distance and other performance are different.

The RS-232 interface conforms to the interface standard for serial data communication developed by the United States Electronics Industry Alliance (EIA), and the full name of the original number is EIA-RS-232 (abbreviated as 232, RS232). It is widely used for computer serial interface peripheral connections. Connecting cables and mechanical, electrical characteristics, signal functions and transmission processes.

Smart meters are developed with the maturity of single-chip microcomputer technology in the early 80s, and now the world instrument market is basically monopolized by smart meters. The reason is the need for enterprise informatization, and one of the necessary conditions for enterprises to have a network communication interface when selecting an instrument.

At first, it was a simple process quantity of data analog signal output, and later the instrument interface was RS232 interface, which can realize point-to-point communication, but this way can not realize the networking function. The subsequent RS485 solved this problem.