Specifications

48 | Specifications
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Power Requirements
The tables below represents the PSU’s capabilities and does not represent the S4820T’s operation.
AC Input Specification
DC Input Specification.
IEEE Standards
The S4820T switch complies with the following IEEE standards:
• 802.1AB LLDP
• 802.1ag Connectivity fault Management
• 802.1D Bridging, STP
• 802.1p L2 Prioritization
• 802.1Q VLAN Tagging, Double VLAN Tagging, GVRP
• 802.1s MSTP
• 802.1w RSTP
• 802.3ab Gigabit Ethernet (1000BASE-T)
• 802.3ac Frame Extensions for VLAN Tagging
Parameter Specifications
Power supply 100–240 VAC 50/60 Hz
Maximum current draw per system 5.8 A @ 398.02watts/100vac
2.9 A @ 398.02watts/200vac
Maximum power consumption 460 Watts (AC)
Maximum power consumption 800 Watts (DC)
Typical power consumption 338 Watts
Reliability MTBF 355,178 hours
min/max input voltage range −40.5V /−48V/ −60V
input power at full load −40.5V/970W −48V/930W −60V/
950W (without fan)
−40.5V/980W −48V/940W −60V/
960W (with fan)
input current at full load −40.5V/23.8A −48V/19.0A −60V/
15.6A (without fan)
−40.5V/24A −48V/19.2A −60V/
16.0A (with fan)
Start up VDC 39.0+/−1.5V
Start off VDC 37.5+/−1.5V