Liebert EXL S1
Normal and safe operation
User Manual 10H52226UM60 - Rev. 1 - 01/2017
76
5.3.1. Components
The UPS consists of the following components:
• Rectifier - Provides regulated DC voltage to inverter and booster/charger.
• Inverter - Provides controlled AC output voltage to the critical load
• Battery converter - Charges the battery when line power is present. Supplies the inverter from the
battery when line power is not present.
• Static Bypass Switch
• Maintenance Bypass - Disconnects the Power Module during servicing, without interrupting the
supply to the load
Figure
43
- Liebert EXL S1 block diagram
5.4. Maintenance Bypass Switch
(not available for 600/800/1000/1200kVA)
Liebert EXL S1 is equipped with a Maintenance Bypass Switch (QS3) that allows the user to perform
maintenance on the UPS without interrupting the supply to the load.
Transfer to and from Maintenance must be done in accordance with the procedures 3 and 4 described
in para 5.7. on page
80
.
• QS1 = OPEN
• QS2 = OPEN
• QS3 = CLOSED
• QS4 = OPEN
(see Fig.
19
-Fig.
22
)
Warning
During parallel operation, switching of the load on the built-in Service Bypass must be
performed by an external device (see chap. 7. on page
86
).
Static Switch
Inverter
Rectifier
Battery converter
Maintenance Bypass
Summary of Contents for Liebert EXL
Page 1: ...Liebert EXL User Manual...
Page 2: ...Liebert EXL UNINTERRUPTIBLE POWER SUPPLY USER MANUAL 10H52226UM60 rev 1...
Page 7: ...Liebert EXL S1 6 User Manual 10H52226UM60 Rev 1 01 2017...
Page 36: ...Preparation For Use Liebert EXL S1 35 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 74: ...CONNECTIVITY PANELS Liebert EXL S1 73 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 84: ...Normal and safe operation Liebert EXL S1 83 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 86: ...Maintenance Liebert EXL S1 85 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 94: ...PARALLEL CONFIGURATION Liebert EXL S1 93 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 102: ...Options Liebert EXL S1 101 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...