电气设计说明(英文版).doc

Electric Design InstructionsI. Design basis1. Construction outline:1） The project is class D plant for single layer material brick and tile production.2） The total construction area is 10391.48 .2. Project design data provided by relevant professional personnel;3. Design order and design requirement provided by construction unit;4. Municipal departments examination opinions on primary design;5. Current main standard and regulation of Peoples Republic of China: Code for Electrical Design for Civil Building JGJ 16-2008Code for Design of Low-voltage Electrical Distribution System GB 50054-95Code of Design on Building Fire Protection and Prevention GB 50016 -2006Standard for lighting design of buildings GB 50096-2004Design Code for Protection of Structures against Lightening GB 50057-94 (2000)Regulations to Compile the Documents of Architectural Engineering Design (2003)Other relevant current national and local regulation, specification, and standard.II. Design scope1. The project includes below electrical systems inside the red line:1) 220/380V electrical distribution system;2) Lighting system;3) Protection of structure against lightening , grounding system and Security measures;4) Network and telephone system;2. Division of other professional design:1) Relevant unit is responsible for outdoor office premises and street lamp lighting system in secondary design, this design is only reserve the power;2) Oil storage room for diesel generators is out of the construction, and will be finished in the secondary design by relevant unit. Manufactures provide diesel engine cabinet. 3) Subject to standard requirements, the plant may be design without emergency lighting and evacuation indication light. Spare lighting necessary for production is up to production process and configured otherwise.III. 220/380V electrical distribution system1. Load classification:The lighting and power of the project should be second-class load requirements. 2. Power supply:In the project, main power supply 220/380V, three-phase -five -wire system is provided by outdoor electrical distribution room.3. Emergency power:Emergency power adopts diesel generator set, 3 generators Model 400 KW.4. Power supply mode:In the project, low-voltage electrical distribution system adopts radio power supply. Main electrical distribution room is inside the construction while branch electrical distribution rooms are in each workshop. Per relevant design delegation request, electrical distribution cabinet in branch electrical distribution room is equipped with driving motor to control and protect electronic appliances. Per site equipment controlling requirement, manufacture provides secondary control wiring diagram for electric driving. The designed driving motor is equipped with protecting and controlling electric appliances in consideration of ordinary cage type three-phase motor and load nature is light load or medium load. When motor started as heavy load, the adaptability of electric appliances should be checked.High-power motor starts method with reduced-voltage, and Stator Winding of star-delta voltage-reduced starting motor must have six Interfaces, but star-delta starting has the disadvantage of small starting torque, so manufacture shall check whether the driving equipment with this starting mode meet the process or not.IV. Lighting system:1. Light source: select the high efficiency and energy saving light as main source.2. Illuminance level: office 300 Lx, laboratory 300 Lx, and workshop 200 Lx which is temporary, and can reduce（reduce source power） according to actual situation or local lighting in which requests high illuminance level.3. Power of lighting and socket are supplied by different power supply. Branches; and all socket circuits have the protection of residual current circuit breaker. 4. Each gas discharge lamp is equipped with electronic energy saving ballast COS 0.90.V. Equipment installation1. Lighting electric distribution of each layer should be surface mounted, and installation height is 1.5 meter from the center to ground.2. The detailed installation method of each lamp refers to equipment material diagram and plane mark.3. Lighting switches and sockets are all 86 series, and shall be flush mounted. All sockets are single phase two holes and three holes safe socket.VI. Selection and laying of wire1. Main power line and power branch line all use VLV 1 KV power cable. Large current place adopts single conductor cable while small current place adopts multiple conductor cable (Original design entrust that all the places with large or small current all use single conductor cable, but the design makes some adjustment as electromagnetic environment of laying single conductor cable is complicated which is not advocated by national standard and IEC). 2. Lighting line adopts BLV-750V wire.The diameters of tube refer to below: 2.5 mm 2 2-3 pieces PC 16, 4-6 pieces PC 20, 7-8 pieces PC 254 mm 2 2 pieces PC 16, 3-5 pieces PC 20, 6-8 pieces PC 254. PE shall use green / yellow wire or mark.5. The construction of all the wires passing through expansion Joint settlement joint late poured band of the building shall subject to national and local standard drawing.6. All the circuits in plane shall wear tube separately per circuit and different power branch lines shall not be lay in the same tube. Each circuit N, PE wires shall be leaded from the cabinet.7. Setting up wire refers to Installation of Cable Bridge Frame 04D701-3.VII. Protection of building against lightening, grounding system and security measuresA. Protection of building against lightening:1. This engineering defends thunder grade to belong to three grades. The setting of the lightning protection devices for the building meets the protection against direct lightning flash and lightening wave, setting with main equipotential bonding.2. Air-termination system:Adopting color steel roof as air-terminal system(steel plate thickness 0.5 mm), and welded reliably with utilized structure steel column and reinforcement. Detailed practice shall per national standard Electrical Equipment Lightning Protection Facilities Installation 99D501-1. All protruding metal object such as roof tube and support shall connect with network of lightning protector.3. Down-lead:Adopting structure steel column as down-lead, and spacing of which no large than 25 mm. The top of down-lead shall be welded reliably with color steel roof while the bottom welded reliably with building foundation beam and grounding facility inside pile foundation. Detailed practice shall per national standard Using Electrical Metal for Lightning Protection and Grounding Device Installation 03D501-3.4. Grounding electrode:Adopting reinforcement inside foundation as grounding facility, and two main reinforcements in high and low two layers of building foundation beam shall be full wielding in a closed loop round or lay manual grounding tape (-40X4 galvanized flat steel) along the outside. Detailed practice shall per national standard 99D501-1.5. All protruding metal member (such as satellite dishes, metal vent pipe, roof fan, roof metal water tank, etc) shall weld reliably with lightening protection facility.6. To prevent the invasion of lightening wave, all metal tube, threading pipe, metal cable sheath, etc in and out of the building shall connect with lightening protection devices in the entrance and exit.B. Grounding and security measures:1. In this project, grounding against lightening and the protection grounding of electrical facility use the same grounding electrode. Required grounding resistance shall no more than 1 ohm, and when it does not meet requirement in actual measurement, manual grounding electrode will be used.2. In this project, grounding mode adopts TN system, power source will be grounded again in entrance PE. In the whole system neutral line (N) and protection line (PE) should be separated strictly, no mix-connection permitted. All electrical devices shell, uncharged normally, should be grounded reliably when it may be charged if insulation breakdown.3. The project adopts main equipotential bonding in main electric distribution room. Each equipotential bonding cabinet uses -40X4. Galvanized flat steel shall be interlinked and the detailed practice shall per national standard drawings Equipotential Bonding Installation 02D501-2. Main equipotential Board is made of copper plate. Main protection line and main device inlet wire shall connect. Main equipotential bonding wire uses 40X4 mm hot-formed galvanized steel, and main equipotential bonding uses equipotential clip and no weld on metal tube permitted. Detailed practice shall per national standard drawings Equipotential Bonding Installation 02D501-2.4. In the building, electric distribution cabinet foundation channel steel, cable bridge frame, trunking, driving motor socket, metal guide, metal frame, etc shall be grounding. The design makes relevant reservation and embedding.5. Over voltage protection: main inlet wire cabinet of low voltage power is equipped with the first level surge protection device (SPD).7. The regulation of smallest cross section of protective conductor shall per below:Cross section of phase line Smallest cross section of PE (m) (m)S 16S16S351635S400S/2X. Others1. Refer to national and local standard drawings or solve through consultation with design institute if there is something relevant with construction but unmarked.2. The project selected devices and material shall have testing certificate issued by national testing center (3 C authentication); shall meet national standard relevant with product; power supply product and fire product shall have network access permits.XI Symbol description:CC- ceiling concealed laying FC- floor concealed laying WC- wall concealed laying WS- wall surface laying AB- along beam surface laying SC- In welded steel pipe concealed laying PC-In PVC plastic pipe concealed laying SR-metal wire groove s