4
Terminal Block Cover
External Battery
Connector
Computer Interface
Intelligent Slot
Surge Protection
Output
Terminal Block
Breaker
Input
Figure 2-3 The rear panel of C3KS
2 Product Description
Operating Principle
32.
Input
Input Filter AC/DC Converter
Bypass
DC/AC Inverter Output Filter
Output
Charger
Battery
DC/DC Converter
Figure 2-4 The UPS operating principle
Note
：
The appearances above make example with the long backup time, the
standard corresponding is without the “External Battery connector”.
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