Connecting To Power And Replacing Power Supply - AudioCodes Mediant 9000 SBC Series Hardware Installation Manual

4.2

Connecting to Power and Replacing Power Supply

This section lists the various warnings, cautions and notes regarding connecting to the power
supply and replacing power supply units.
Warning:
To reduce the risk of electric shock or energy hazards:
• This equipment must be installed by trained service personnel, as defined by
the NEC and IEC 60950-1, Second Edition, the standard for Safety of
Information Technology Equipment.
• Connect the equipment to a reliably grounded Secondary circuit source. A
Secondary circuit has no direct connection to a Primary circuit and derives its
power from a transformer, converter, or equivalent isolation device.
The branch circuit overcurrent protection for DC power supply must be rated 27
•
A.
Caution:
If the DC connection exists between the earthed conductor of the DC supply circuit and
the earthing conductor at the server equipment, the following conditions must be met:
This equipment must be connected directly to the DC supply system earthing electrode
conductor or to a bonding jumper from an earthing terminal bar or bus to which the DC
supply system earthing electrode conductor is connected.
This equipment must be located in the same immediate area (such as adjacent
•
cabinets) as any other equipment that has a connection between the earthed
conductor of the same DC supply circuit and the earthing conductor, and also
the point of earthing of the DC system. The DC system should be earthed
elsewhere.
The DC supply source is to be located within the same premises as the
•
equipment.
Switching or disconnecting devices must not be in the earthed circuit conductor
•
between the DC source and the point of connection of the earthing electrode
conductor.
Note:
The DC power cord is not supplied. For information, refer to the Section
"Related Options: -48VDC Power Cables" at
https://h20195.www2.hpe.com/v2/gethtml.aspx?docname=c04346217
Warnings:
• Both Power Supply modules (1 and 2) must be connected. Ensure that you
connect each one to a different AC power supply source. Two Power Supplies
provide 1+1 power load-sharing and redundancy. The AC power sockets are
located on the device's rear panel.
The two AC power sources must have the same ground potential.
•
The device must be connected (by service personnel) to a socket-outlet with a
•
protective earthing connection.
Use only a certified 3-conductor power cord, supplied with the unit.
•
Hardware Installation Manual 22
Mediant 9000 Series SBC
Document #: LTRT-41667