Explains the essential power requirements and redundancy options for switch operation.
The switch includes two power supplies (1-to-1 redundancy with current sharing) in one of these combinations:
-
Two 650-W AC power supplies
-
Two 930-W DC power supplies
-
Two 1200-W HVAC power supplies
Both power supplies must be of the same type. Do not mix AC and DC power supplies in the same chassis.
For 1+1 redundancy, you must use two power sources and connect each power supply to a separate power source.
The power supplies are rated to output up to 650W AC, 930W DC, or 1200W HVAC, but the switch requires less than these amounts of power from the power supply. To operate the switch, provision enough power from the power source to cover the requirements of both the switch and a power supply. Typically, this switch and a power supply require about 275 W of power input from a power source. But, provision as much as 490 W power input from the power source to cover peak demand.
Some of the power supply modules have rating capabilities that exceed the switch requirements. When calculating your power requirements, use the switch requirements to determine the amount of power that is required for the power supplies.
To minimize the possibility of circuit failure, verify that each power-source circuit that is used by the switch is dedicated to the switch.
Statement 1005—Circuit Breaker
This product relies on the building’s installation for short-circuit (overcurrent) protection. To reduce risk of electric shock or fire, ensure that the protective device is rated not greater than:
30A when the switch is powered with regular DC power supplies (rated 48-60VDC).