Delta Agema AGC032, Руководство по установке, Страница: 22 / 30

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AGC032 Spine Switch
4. Repeat steps 1 and 2 when a second PSU module is installed.
Two installed PSU modules operate in a load-sharing mode and provide 1+1 redundancy.
3.5.2 Installing a DC Power Supply
DC power cord for DC source connection
1. Insert the power cable plug directly into the DC socket of a PSU located at the back of the
switch. The earthing wire of the protective earthing conductor shall be green-and-yellow,
14AWG. The terminals for connecting protective earthing conductors shall comply with
conductor size 2.5 (mm
2
), nominal thread diameter Screw type 4(mm). Considered current
rating of protective device before DC input: 16A.
GND
-48V (-DC)
-48V_RTN (+DC)
(Figure 3-8: Installing a DC Power Supply and Power Cable)
2. Plug the other end of the cable into DC power source. This product is intended to be
supplied by UL Listed DC power source with rated -48V - -60Vdc, 20A minimum, Tma = 40
degree C, and the altitude of operation = 5000 m and the power cable should be 14AWG.
CAUTION:
•
Reversing polarity when connecting DC power wires can
permanently damage the power supply or the system.
• Always disconnect the power cable from power source before you
service the power supply slots.
MISE EN GARDE:
• L’inversion de la polarité des câbles d’alimentation CC lors de
leur branchement peut endommager irréversiblement le bloc
d’alimentation ou le système.
•
Débranchez le câble d’alimentation de l’unité d’alimentation avant
l’entretien des fentes du bloc d’alimentation.
3. Check the PSU and front-panel LEDs as the device is powered on to be sure that DC
power is being received and the PWR1 LED is on. If not, check that the power cable is
correctly plugged in.
4. Repeat steps 1 and 2 when a second PSU module is installed.
Two installed PSU modules operate in a load-sharing mode and provide 1+1 redundancy.