Emerson 7400 Series User Manual page 14

Series 7400 Single Phase 1+N UPS
I2
Output
Isolator
I4
Output Maintenance
Isolator
I3 I4 I1
Maintenance Static Input
Bypass Bypass Isolator
Isolator Isolator
830 830
10/ 40 kVA
I3 I2 I1
Static Input
Bypass Bypass Isolator
Isolator Isolator
1250 1250
60/ 80 kVA
Figure 3A: Power Isolator identification for 230V output system
I4 I4 I3 I3 I2 I2
Output Output Maintenance Maintenance Static Static
Isolator Isolator Bypass Bypass Bypass Bypass
Isolator Isolator Isolator Isolator
900 900
50 kVA
I4 I3 I2
Output Maintenance Static
Isolator Bypass Bypass
Isolator Isolator
1400 1400
105 kVA
I1 I1
Input Input
Isolator Isolator
I1
Input
Isolator
5