UPS (Uninterrupted Power Supply)

UPS is commonly used for critical system like computers, Servers, emergency lightings, etc

The main Parts of the UPS is

1. Converter or Rectifier
2. Inverter
3. Battery
4. Static bypass switch

• Converter or Rectifier: it converts AC supply to DC Supply for battery charging

 

• Inverter: it converts DC supply to Ac supply for connecting loads

• Battery: it stores the power for using during power failure

• Static bypass switch: if inverter failures the load transfers to bypass mode

Types of UPS: 

1. Online UPS - Continuous Power Supply
2. Offline UPS - Interruption may occur when Power gets failure

Safety Measures of UPS: 

Maintain UPS Room temperature 

Keeping UPS Room clean

Maintain the rubber mats in UPS Room

Maintaining battery voltage

Note down the all parameters

Equipments in The UPS:

IGBT (Insolated Gate Bi Polar Transistor)

Charging Card

Drive Card

Chock

Step down transformer

Rectifier

Failure Reasons Of UPS: 

Inverter failure

• Under voltage
• Input side short
• phase reversed

Converter or Rectifier Failure

• Output side short
• Over load

Room temperature of the UPS is between 20^oC to 22^oC