Allied Telesis x900 Series Switch - Handbuch (Seite 8)

x900 Series Switch
8
Applying Power to the Switch
The switch has two bays in the rear. Your switch comes with one pre-installed
power supply unit (PSU). Depending on the model, the switch also has one
fan-only module (FOM) in the other power supply bay or one blanking panel
over the power supply bay.
AC Power Supply
Important information for service personnel:
■ CAUTION: double pole/neutral fusing
■ the rating of fuses FH101 and FH102 is 250V, 5 A (AT-PWR01 only)
Procedure for AC Power Supply
To apply power to the PSU, plug the AC power cord that is provided into the
power inlet on the faceplate of the PSU. Then connect the power cord to the
main power supply.
DC Supply Cable and Power Supply
Supply cable specifications:
■ three-core cable is required
■ minimum core size: 3.3 mm
2
(12 AWG) high strand count copper wire
■ minimum cable rating: 600V, 90 degrees C
Power supply specifications:
■ 40 to 60 V, 48 V nominal
■ supports either positive grounded or negative grounded operation
■ a 15 Amp certified/listed circuit breaker is required for circuit protection