GB/T 18573-2001 Lightning protection for electrical installations in small boats
Some standard content:
IC5 47.080bzxZ.net
National Standard of the People's Republic of China
GB/T18573--2001
id1 IS0 10134:1993
Electrical devices for small boats
Lightning protection
Small craf.--Electrical devices---Lightning protection2001-12- 13 Issued by
People's Republic of China
National Quality Supervision, Inspection and Quarantine General
2002-08-01 Implementation
GB/T18573--2001
This standard adopts 1S010134:1993 Small boats Appendix A of this standard is the appendix of the standard.
In this standard, Zhongkuo Shipbuilding Industry Group Corporation proposed the gas device
This standard is under the jurisdiction of the Eighth Research Institute of Zhongzhou Inspection and Motion 1. The drafting unit of this standard is the Seventh Research Institute of Zhongkuo Shipbuilding Industry. The main drafters of this standard are Lin Dehui, Li Zhensheng and Yu Shenzheng.
-TiKAoNi KAca-
GB/T185732001
ISO is the world federation of the International Organization for Standardization (ISO) and the member bodies of international standards bodies (ISOCs). The work of formulating international standards is carried out by ISO technical committees. Each member body interested in a project undertaken by a technical committee has the right to be represented on that committee. International organizations, both governmental and non-governmental, in liaison with ISO may also participate in the work. 1S) The International Electrotechnical Commission (IEC) cooperates in technical standardization. The international standard drafts adopted by the technical committees shall be sent to the member groups for voting before being approved by the IS() Council as international standards. According to the IS() standard-setting procedures, at least 75% of the member groups must vote in favor of the international standard. In order to become an international standard, this international standard IS()10134:1993tI1S0/TC188\Technical Committee has formulated this bundle of standards. Appendix A is the appendix to the standard. 1 Scope National Standard of the People's Republic of China Lightning protection for electrical installations Smali craft--Electrical deviees--Lightning grolection GB/T 18573--2001
id11so10134:1993
This standard specifies the requirements for the design, manufacture and installation of lightning protection equipment installed on small boats with a hull length of less than 24m. 2 Definitions
The following definitions shall apply in this standard.
2.1 Air gap
The distance between the air gap and the conductor path does not exceed 2mm. It is used to prevent the passage of the pressure current and not to block the passage of the required current. 2.2 Air lermineE
The terminal is specially designed to intercept lightning discharges and is located at the highest point of the lightning protection system. 2.3 Lightning protection grounding plate The lightning protection grounding plate prevents the current from flowing to the electrical components of the equipment floating in the water. 2.4 Lightning protection [ightming protection] vrotectivemast month ten aerial terminal rate lightning protection grounding plate between the electrical connection of the conductive structure tree or facility: 2.5 protection extension area rotecrion2nne
the aerial terminal of the grounding. Sophora japonica or overhead grounding wire, in fact, can avoid the area of commercial lightning strike, note that one point of the protection can completely avoid general damage or loss of personnel. 2 when dirty water between the diseased pieces, the food protection system does not provide protection, and H when the error on the water or on the obstacle, if the whole part of the symptoms and the line drop 3.1 The protection of personnel and equipment from lightning strikes is not only related to the design of the equipment and the coordination of the protectors, but also to the behavior of the personnel. When designing and installing the shelter protection system, the basic principles contained in this standard should be applied. In view of the great variation in the design of the station structure and the unpredictability of the power supply, specific recommendations applicable to all situations can be made. 3. In order to provide a separate grounding conductor or a protective gun , take into account the mechanical strength and conductivity of the static electricity in the cabin and do not pay attention to the mechanical strength and conductivity of the conductor. The circuit formed by the conductor is in a straight line, 3.3 If there are large metal objects near the grounding body, such as a truck, a generator, a car, etc., then at its closest point, it is very easy for spark discharge or decompression from the grounding conductor to occur. In order to prevent the damage caused by the non-effective decompression effect, all positions where the surface may be reduced should be located. All are provided with a conductor connected to the phase (see 2.1) whose specific conductivity is at least equal to the conductivity of the conductor with a carrying area of 8nt. 3.4 For large metal objects that are not grounded, if it is not possible to connect them to the avoidance conductor or bonding system as specified in 5.4, they can be directly connected to the grounding plate in reverse. Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on December 13, 2001 KAO Ni KAca-
2002-08-01 Validity Bottle
GB/T18573-2001
3.5 If a avoidance protection system is installed on the subject, its main body should include the contents listed in the Requirement A (Standard Requirement) list. 4 Materials
The materials used in the protective system shall be of high resistance. If in some installations it is unavoidable to make connections between different conductors, the cost may be reduced by using suitable materials or by using special connectors as follows: 4.2 Linear conductors
4.2.1 Linear conductors shall be copper conductors with a cross-sectional area of not less than 8 mm, or conductors with a conductivity equal to that of a copper conductor with a cross-sectional area of 1 mm2 or more.
4.2.2 The insulated area of one strand of copper wire shall be not less than 5.71 mm. The insulation grade shall be at least 19 mm. 4.2.3 The thickness of the metal strip or metal strip shall be at least 15 mm.
5.1 Conductor connectors
The conductive connectors shall be made and shall not damage the conductor and shall provide a conductivity equal to that of the conductor. 5.2 Height of shelters to be protected
The height of shelters to be protected shall provide a protection zone or shelters in accordance with the corresponding requirements of 5.2.1, 5.2.2 and 5.2.3. 5.2.1 When the water level is less than 15m: the horizontal diameter of the bottom of the protection zone is equal to the ground height (see Figure 1). 5.2.2 When the distance to the danger level is 5m, the protection zone is determined by the distance from the lightning bolt. Because the lightning strike can pass any grounded object within the flash distance of the final point of penetration, the protection zone is determined by a radius of 3m (see Figure): the radius of the arc is 3m after the flash. The toilet passes through the item and is in good contact with the water. If more than one wire is used, the protection area provided by the chain can be ensured by wearing other high poles, and any conductive objects and running objects can be connected to the protection area at a certain rate. It will not exceed the planned flash strike distance and will not increase the protection area. 5.3 Shelters to be protected 5.3.1 If the wire is made of conductive material, the associated shelter or grounding conductor shall meet the following requirements: 1. The base is in the shape of a wire; 2. It is fastened to the ground; 3. It is at least 150mm above the wire; 4. The aerial end is used as the common end! The actual hearing loss can be directly connected to the ground connection L selected in 3.2. 5.3.2. If it meets the requirements of 3.2, then the optical antenna or external support can be used as a harmonic protection. Note 3: Non-conductive wire with a spiral conductor is not used for harmonic protection. It has a higher value for the negative current of the circuit. It is ineffective to change the distance between the fast part of the carrier and the ground connection L.
5.4 Root connection of exhibition objects
5.4.1 Objects that are a permanent part of the equipment or are permanently installed in or on the equipment and whose function will not be seriously affected by the harmonics should be connected to the harmonic conductive system by connecting it to it or through an air gap so that it becomes part of the harmonic conductive system.
Small metal objects can be used as an exception. 5.4.2 The purpose of the connection between metal parts and conductors is to prevent the discharge of large metal objects from causing damage to the surface of the bed, especially when there is a large metal object nearby. In the prevention of damage, it is important to identify the places where the side effects are most likely to occur and provide metal paths for these places. sh
3lm35.2.2
GB/T18573—2001
Protection provided by a high conductor above the shock absorber × Protection system provided by the protection system only or 5
Figure 1 Boats with a height not exceeding 15m above the water surface Protection area within the protective system of the boat with a height exceeding 15m above the water surface R30m (see 5.3.2)
Figure 2 Boats with a height exceeding 15m above the water surface KAONrKAca-
GE/E 18573---2007
5.4.3 In order to minimize the shock discharge current through the engine, it is best to connect the engine body directly to the transmission floor, rather than to any point on the shock absorber conductor. 5.5 External metal objects
External metal objects that will stick to the main electrical conductor and connection should refer to external metal objects on the main electrical conductor and connection. The external metal objects include all large objects such as water half guardrails, handrails on the cabin, lightning rods coming out of the kitchen stove, hangings, metal signal hooks and metal hatch covers. 5.6 Internal metal objects
Any metal object located inside the vehicle and any point of it is within 2m of the lightning conductor should be connected to the lightning conductor before the electrical connection.
Internal metal objects include engines, water and fuel tanks, and control rods for power and reversing devices. It does not refer to small metal objects such as magnetic compasses, clocks, kitchen stoves, medicine boxes and other hardware of the boat. They should be connected to the ground. 5.7 External/Internal Metal Objects
Metallic test objects that penetrate the side of the ship, sun plate or boat body should be connected to a nearby conductive cotton at the point where the metal object penetrates the body, and the conductive cotton should be connected to the smaller part of the ship. 5.8 Grounding plate
5.8.1 The grounding plate can be composed of any metal surface in the water under any heel or trim condition, and its submerged surface is at least "
5.8.2 The grounding plate for the metal surface, the metal middle board and the ridge, or the grounding plate for the radio transmitter can be a closed grounding plate. 5.8.3 The metal hull itself constitutes a sufficient grounding plate. 6 The body of the metal hull ||tt| | If there is an electrical connection between the metal body and the metal superstructure that meets the requirements of Chapter 1, no further protection is required for the rain shelter. 7 Boats with non-metallic bodies
7.1 Cables and shrouds, metal guns and masts on non-metallic guns shall be grounded. 7.2 The grounding of other objects on the body shall comply with the requirements of Chapter 5. 7.3 The hull of a multi-hull, with or installed on it, shall be grounded Each component of the equipment shall be provided with a protective earthing device in accordance with 5 and 8.
8 Non-metallic components
8.1 If the height of the component meets the requirements for the protection zone, then the protective earthing device may be provided with adequate protection by means of a grounded radio cable, a support pole or other grounding device in accordance with the requirements of Section 5. B. The interconnection and grounding of components shall comply with the requirements of Section 5. A'1 General
C:R/T 18573—2D01
Appendix A
(Subject to change)
Main manual
If a lightning protection system is installed on the vehicle, the main manual shall include information on the maintenance of the system and instructions on the occupant's personal behavior.
A2 Maintenance
The main manual shall include the items listed in A2.1 to 2.3. A2.1 If the front antenna has been designed as part of the lightning protection system, this should not be left unattended during the maintenance period.
A2 .2 If the boat has been struck by lightning, the control, electrical and electronic devices should be checked to determine whether they have been damaged or changed in calibration.
A2.3 If the boat has been struck by lightning, the appearance of the lightning protection system should be checked for damage, the integrity of the system and the continuity of the grounding. 13 Precautions for crew members during lightning strikes
The basic purpose of lightning protection is to ensure the safety of personnel, so the following precautions should be included in the manual: A3.1 The crew should be parked in other closed boats as far as practicable. A3.2 The crew should be in the required position. 13.3 In accordance with the provisions of safe operation and navigation, personnel should avoid contact with any equipment connected to the lightning protection system. In particular, it is not recommended that operators simultaneously contact with the handles of the sound device and the core of the spotlight. 13.4 Avoid contact with the metal and carbon parts of the sailboat, the transom, its members and the poles.3 If the entire vessel is struck by lightning, the appearance of the lightning protection system should be checked for damage, the integrity of the system and the continuity of the grounding should be ensured. 13 Precautions for crew during lightning strikes
The basic purpose of lightning protection is to ensure the safety of personnel. Therefore, the following precautions should be included in the manual: A3.1 Crew members should stop in other closed boats as far as practicable. A3.2 Passengers should not hang their hands and feet in the water. 13.3 In accordance with the provisions of safe maneuvering and navigation, personnel should avoid contact with any equipment connected to the lightning protection system. In particular, it is not recommended that operators simultaneously contact the equipment and the equipment connected to the lightning protection system:
A3.4 Crew members should avoid contact with the metal and carbon parts of the boat's beams, spars, and masts.3 If the entire vessel is struck by lightning, the appearance of the lightning protection system should be checked for damage, the integrity of the system and the continuity of the grounding should be ensured. 13 Precautions for crew during lightning strikes
The basic purpose of lightning protection is to ensure the safety of personnel. Therefore, the following precautions should be included in the manual: A3.1 Crew members should stop in other closed boats as far as practicable. A3.2 Passengers should not hang their hands and feet in the water. 13.3 In accordance with the provisions of safe maneuvering and navigation, personnel should avoid contact with any equipment connected to the lightning protection system. In particular, it is not recommended that operators simultaneously contact the equipment and the equipment connected to the lightning protection system:
A3.4 Crew members should avoid contact with the metal and carbon parts of the boat's beams, spars, and masts.
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