34
PRELIMINARY
1 Basic Operation (continued)
1.8 Block and Wiring Diagrams (continued)
1.8.1 KX Models
Input: 3-phase 4-wire 230/380Vac
Output: 3-phase 4-wire 230/380Vac
The SU20KX (Figure 1.8.1a) has a model rating of 20kVA UPS and contains one power module and 40 internal batteries (which can be increased to
80, if necessary). (See Figure 1.8.1b for wiring.)
The SU40KX (Figure 1.8.1c) has a model rating of 40kVA UPS and contains two power modules and 80 internal batteries.
(See Figure 1.8.1d for wiring.)
Q1 LOAD
MAIN
INPUT
STS
Q2
20kVA/3U POWER MODULE
EMPTY
12V, 9AH, 10PCS
EXTERNAL
BATTERY
Q5
12V, 9AH, 10PCS
12V, 9AH, 10PCS 12V, 9AH, 10PCS
EMPTY EMPTY
EMPTY EMPTY
Manual Input
Bypass Input
Main
Q4
Output
Circuit Breaker
Q3
Manual Bypass
Circuit Breaker
Bypass Input
Circuit Breaker
Main Input
Circuit Breaker
Fig 1.8.1a SU20KX Block Diagram
Fig 1.8.1c SU40KX Block Diagram
LOAD
MAIN
INPUT
STS
Q2
20kVA/3U POWER MODULE
20kVA/3U POWER MODULE
12V, 9AH, 10PCS
EXTERNAL
BATTERY
Q5
12V, 9AH, 10PCS
12V, 9AH, 10PCS 12V, 9AH, 10PCS
12V, 9AH, 10PCS 12V, 9AH, 10PCS
12V, 9AH, 10PCS 12V, 9AH, 10PCS
Q1
Manual Input
Bypass Input
Main
Q4
Output
Circuit Breaker
Q3
Manual Bypass
Circuit Breaker
Bypass Input
Circuit Breaker
Main Input
Circuit Breaker
