introduction to ups power supply

i. core functions

1. power-off battery life: the power supply is interrupted and the battery is automatically switched to ensure that the equipment does not stop.
2. stabilized pressure purification: filter voltage surge, spike, clutter, and adapt to power consumption of precision equipment.
3. lightning protection and surge protection: protect back-end electrical appliances against lightning strikes and grid impacts.

ii. mainstream classification (by working principle)

1. backup ups
   the structure is simple and the price is low. when the power supply is normal, it is only stabilized and the power is cut off before the inverter output. multi-usehome computer, router, monitoringlow-power equipment.
2. online interactive ups
   cost-effective, active adjustment when voltage fluctuations, fast switching speed, suitableoffice computer, small server.
3. online ups
   the mains are always rectified + inverter output,zero switching, pure voltage stabilization, the power supply quality is the highest. multi-usedata center servers, switches, medical equipment, industrial precision instruments, is the mainstream model of industrial/data center.

iii. common application scenarios

• office: computer, printer, network switch
• data center: server, cabinet, security monitoring
• industrial/medical: automation equipment, precision instruments, medical equipment
• household: weak current, smart home, router optical modem

iv. key parameters (purchase reference)

• rated capacity: unit va (volt-ampere), determines how many devices can be brought
• backup time: power supply duration after power failure (standard machine is generally several minutes, long machine can be extended by external battery)
• input/output voltage: conventional single-phase 220v, industrial common three-phase 380v
• power factor: the higher the value, the better the power utilization rate.