Allied Telesis x900 Series Руководство по установке - Страница 5
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The following items are included with PSUs purchased separately:
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one AC power cord (AC model)
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one power cord retaining clip (AC model)
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one Installation Guide
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one warranty card
The following items are included with each FOM purchased separately:
■
one Installation Guide
■
one warranty card
Installing a Power Supply Unit
Warning All AC and DC versions of this equipment must be earthed.
Do not install an AC PSU and a DC PSU in the same switch chassis.
If you remove a PSU or FOM from the switch, immediately replace it or cover
the bay with a blanking panel. This prevents dust and debris from entering the
chassis and maintains proper airflow in the switch.
AC power supply unit specifications
Important information for service personnel:
■
CAUTION: double pole/neutral fusing
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the rating of fuses FH101 and FH102 is 250 V, 5 A (AT-PWR01 only)
DC supply cable and power supply specifications
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three-core cable is required
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minimum core size: 3.3 mm
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minimum cable rating: 600 V, 90 degrees Celsius
DC power supply specifications
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40 to 60 V, 48 V nominal
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supports either positive grounded or negative grounded operation
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a 15 Amp certified/listed circuit breaker is required for circuit protection
2
(12 AWG) high strand count copper wire
Installation Guide
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