目录简介 | Contents Foreword 1 Scope 2 Normative references 3 Terminologies and definitions 3.1 Instrument power supply 3.2 Uninterrupted power supply (UPS) 3.3 General power supply (GPS) 3.4 Power capacity 3.5 Momentary power failure 3.6 Momentary voltage drop 3.7 Power distributing cabinet (box) 3.8 Power-on surge condition 4 Instrument supply district and loading grade 4.1 Supply district 4.2 Loading grade 5 Instrument power supply quality and supply unit 5.1 Power quality 5.2 AC UPS equipment (UPS) 5.3 Regulated power supply and DC UPS equipment 6 Distribution of instrument power supply 6.1 General requirements for power 6.2 GPS 6.3 UPS 7 Design for instrument power supply system 7.1 Design discipline for power supply system 7.2 Power supply of electronic simulation instrumental system 7.3 Power supply of DCS, PLC, SIS and computer system 8 Selection for power supply equipments and power system wiring 8.1 General principles of selection for power supply equipment 8.2 Selection for power supply equipment 8.3 Power system wiring References Explanation of words in this standard |