General provisions The power supply and grounding of intelligent system equipment should be safe, reliable, economical and advanced. Design element The intelligent system equipment should be classified, and the corresponding electricity should be configured according to the classification. In order to meet the needs of future expansion, the power equipment room should have a margin. The quality of the power supply shall comply with the relevant national regulations and the technical conditions for the use of the products. According to factors such as the size of the intelligent system, the distribution of equipment, and the power demand, the UPS decentralized power supply mode or the UPS centralized power supply mode is adopted. The lines of the power system and the weak current system should be laid separately. The total equipotential bonding should be used, and the grounding of the intelligent system equipment room, floor weak room, floor distribution room, etc. of each floor should be connected by local equipotential bonding. When the grounding pole is a joint grounding body, the grounding resistance should not be greater than 1Ω; when a separate grounding body is used, the grounding resistance should not be greater than 4Ω. The power supply system of the intelligent system equipment should adopt protection measures such as overvoltage protection. Electromagnetic compatibility issues should be considered when selecting intelligent system equipment and electrical equipment and wiring. design standards Class A standards should meet the following conditions: 1 There should be two independent power supplies and automatically switch at the end. 2 Important equipment should be equipped with a UPS power unit. 3 Power quality should meet the following requirements: 1) The steady state voltage offset is not more than ± 2%; 2) The steady-state frequency offset is not more than ±0.2 Hz; 3) The voltage waveform distortion rate is not more than 5%; 4) The allowable power-off duration is 0 to 4 ms. When the above requirements are not met, measures such as frequency stabilization and uninterrupted power supply are adopted. 4 Important equipment should be powered by a radial dedicated circuit, and other equipment can be powered by trunk or chain. 5 The power main line and the weak electric main line should be set up separately in the separate floor distribution room and the floor weak electricity room. The size and horizontal exit position of the power distribution room and the weak electricity room should be left marginal, and the floor should be 30mm higher than the floor. 6 The total control room (host room) of the intelligent system should be equipped with a dedicated distribution box, and the distribution circuit of the dedicated distribution box should have a margin. 7 A dedicated user distribution box shall be provided in each floor or each rental unit, and the power line drawn from the user's distribution box shall be laid separately from the weak current line. 8 Ground wiring can be used for overhead floor wiring or network floor wiring. 9 There should be a cable trough or pipe laying in the ceiling. 10 power outlet: Capacity: The office should be considered at 60V·A/m2 or more; Quantity: The office should be set at 20/100m2 or above (each outlet should be calculated according to 300V·A); Type: The socket must have a flat hole multi-purpose socket with a grounding pole. Class B standards should meet the following conditions: 1 There should be two independent power supplies and automatically switch at the end. 2 Important equipment can be equipped with UPS power supply unit. 3 The power supply quality should meet the following requirements: 1) The steady state voltage offset is not more than ± 5%; 2) The steady-state frequency offset is not more than ±0.5 Hz; 3) The voltage waveform distortion rate is not more than 8%; 4) The power-off duration is allowed to be 4 to 200 ms. When the above requirements are not met, measures such as frequency stabilization and uninterrupted power supply are adopted. 4 Important equipment should be powered by a radial dedicated circuit, and other equipment can be powered by trunk or chain. 5 The power main line and the weak electric main line should be set up separately in the separate floor distribution room and the floor weak electricity room. The size and horizontal exit position of the power distribution room and the weak electricity room should be left marginal, and the floor should be 30mm higher than the floor. 6 A dedicated distribution box should be set up in the main control room (host room) of the intelligent system. The distribution circuit of the dedicated distribution box should have a margin. 7 A dedicated user distribution box shall be provided in each floor or each rental unit, and the allowance circuit from the dedicated distribution box shall have a margin. 8 Ground wiring can be applied by network floor, floor trunking, floor piping, etc. 9 The cable trough or pipe laying should be provided in the ceiling. 10 power outlet: Capacity: The office should be considered at 45V·A/m2 or more; Quantity: The office should be set at 15/100m2 or above (each outlet should be calculated according to 300V·A); Type: The socket must have a flat hole multi-purpose socket with a grounding pole. Class C standards should meet the following conditions: 1 It should be powered by two power sources and automatically switched at the end. 2 Important equipment should be equipped with UPS power supply unit. 3 The quality of the power supply should meet the requirements for use of the product. 4 Intelligent system equipment should be powered by dedicated loop. 5 The power main line and the weak electric main line should be set up separately in the separate floor distribution room and the floor weak electricity room. The size and horizontal outlet position of the power distribution room and the weak electricity room should be left marginal, and the floor should be 30mm higher than the floor. 6 A dedicated distribution box should be set up in the main control room (host room) of the intelligent system. The distribution circuit of the dedicated distribution box should have a margin. 7 The user distribution box for each floor or each rental unit should be centrally located in the public space, and there should be a margin from the distribution circuit of the user's distribution box. 8 Ground wiring can be laid by floor trough, floor piping, etc. 9 A certain amount of space should be reserved in the ceiling for future wiring. 10 power outlet: Capacity: The office should be considered at 30V·A/m2 or more; Quantity; the office should be set to 10/100m2 or more: the socket must have a flat hole multi-purpose socket with a grounding pole.
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