Delta 3KVA User Manual page 13

2. I/P BREAKER: This is used to prevent high input current from the UPS.
3. INPUT SOCKET or TERMINAL: AC input utility power supplies to the UPS via
the socket or terminal.
4. SNMP SLOT: A SNMP adapter can be plugged in this port for managing UPS on
network.
5. TVSS (Transient
PROTECTOR): These connectors are used to prevent damage from surge, noise and
spike traveling form telephone or network line.
6. COMMUNICATION INTERFACE (RS-232/DRY CONTACT): The communication
port is used to communicate PC and UPS. Please refer to section 8 for more
information.
7. Fan: DC fans for cooling purpose.
8. Circuit Breaker: Used to protect UPS from output overload.
9. External Batteries Connector: Used for connecting external battery cabinets to
extend back up time.
Voltage Surge Surppressor)
12
SHEET 13 TO 14
(RJ-45/RJ-11 SURGE