The Difference Between Online and Offline UPS Systems

1
Difference Between Online and Offline UPS

• Invertek Energy

2
Introduction

• UPS (Uninterruptible Power Supply) systems
  provide backup power in case of power failure.
  Understanding the differences between online and
  offline UPS systems helps in choosing the right
  one.

3
What is Online UPS?

• An Online UPS provides continuous power to
  devices by converting incoming AC to DC and then
  back to AC. It ensures zero transfer time and
  protects sensitive equipment.

4
What is Offline UPS?

• An Offline UPS provides power directly from the
  mains supply until a power failure occurs. During
  power cuts, it switches to battery backup but
  involves a small transfer time.

5
Key Differences Online vs Offline UPS

• 1. Transfer Time
• - Online UPS Zero transfer time
• - Offline UPS Short transfer time
• 2. Cost
• - Online UPS Expensive
• - Offline UPS Affordable
• 3. Power Efficiency
• - Online UPS Continuous conversion results in
  lower efficiency
• - Offline UPS Higher efficiency

6
Applications of Online UPS

• 1. Ideal for sensitive equipment
• 2. Used in data centers, hospitals, and IT
  environments
• 3. Provides superior protection against power
  disturbances

7
Applications of Offline UPS

• 1. Suitable for less sensitive devices
• 2. Commonly used in homes and small offices
• 3. Cost-effective backup solution for standard
  electronics

8
Conclusion

• Choosing between online and offline UPS depends
  on the type of equipment you need to protect.
  Online UPS is ideal for sensitive devices, while
  Offline UPS is a cost-effective option for basic
  protection.
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