33
5.
UPS Working Principle
5.1. UPS System Block Diagram
(fig 5.1)
Figure 5.1 above illustrates the True On-Line Double Conversion architecture
of the UPS system. The major modules consist of
：
1) An AC to DC power converter (Rectifier) with PFC control circuit
2) A DC to AC power high frequency inverter
3) An Intelligent Battery Charger
4) A bank of stationary maintenance-free batteries
5) A DC to DC push/pull converter control circuit
6) A Static Bypass Loop
7) Input & Output EMI Filter
The table below provides a summery guide to the UPS operating modes
against the Utility AC Power Source conditions
Summary of Contents for UniStar C
Page 1: ...Form No 003 2308 Rev C 1K 2K 3K UniStar C Intelligent True On Line UPS User Manual ...
Page 9: ...8 3 2 Rear Panel Descriptions 120V 1KVA 10 8 7 1 2 3 5 4 6 2KVA 3KVA ...
Page 19: ...18 4 3 Set up Tower Configuration Setup Step 1 Power Module Battery Module Step 1 ...
Page 20: ...19 Rack Mount Configuration Setup Step 1 Step 2 Step 3 ...
Page 21: ...20 Step 4 Step 5 ...
Page 27: ...26 Q1 Q2 R1 R2 S ...
Page 28: ...27 T U1 U2 U3 V ...
Page 32: ...31 4 4 3 Battery Replacement Step 1 Step 2 ...
Page 33: ...32 Step 3 Step 4 1KVA 2K 3KVA ...
