ABB DPA UPScale ST120 - Main Elements Description; Functional Description; Single Line Diagram

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3.2 Main elements description
3.2.1 Single line diagram
Fig 3.2.1-1: Single line diagram
3.2.2 Functional description
Section Component Functional Description
Main input terminals
1L1 Rectifier mains terminal, Phase 1
Provides a connection between the utility supply
and the rectifier input
1L2 Rectifier mains terminal, Phase 2
1L3 Rectifier mains terminal, Phase 3
1N Neutral terminal
PE Earth terminal
Bypass input terminals
2L1 Bypass Main Input Terminal, Phase 1
Provides a connection between the bypass
supply and UPS bypass input
2L2 Bypass Main Input Terminal, Phase 2
2L3 Bypass Main Input Terminal, Phase 3
2N
Neutral terminal
System output terminals
3L1 System Output Terminal, Phase 1
Provides a connection between the UPS system
and the load
3L2
System Output Terminal, Phase 2
3L3
System Output Terminal, Phase 3
3N
Neutral terminal
PE Earth terminal