Input And Output Transformer-To-Ups Connection Line Diagram - Tripp-Lite S3MT-Series Manuel De L'utilisateur

3. Installation

3.7 Input and Output Transformer-to-UPS Connection Line Diagram

Connections are shown below for the cabinet with built-in input isolator transformer, output auto transformer and breakers with
trip and fault LED.
Input Transformer
Red LED (Lit = Over-Temperature, Off = Normal)
AC Input
480V AC
Isolation Transformer
Delta in 480V/208V Wye out
Output Transformer
Red LED (Lit = Over-Temperature, Off = Normal)
Output 480V AC
Auto Transformer
Wye 208V/Wye 480V
Transformer
Output
208V/120V AC,
3-Phase 4-Wire
Trip
+ Ground to
the UPS Input
Bypass Breaker
Breaker
3PH
Mains Breaker
Battery input: +/–120V DC
Trip
Transformer
Breaker
3PH Input 208V AC,
3-Phase, 4-Wire
+ Ground to
Input of Output
Transformer
Figure 3-7: Connection Line Diagram
12
Maintenance Breaker
PFC Inverter STS
Charger
UPS Output
208/120V,
3-Phase, 4-wire
+ Ground to
Input of Output
Transformer
Output Breaker
UPS