Dc power supply earthing guidelines – Dell POWERVAULT MD3620I User Manual
DC Power Supply Earthing Guidelines
Systems using –(48–60) V DC power supplies may have a connection
between the earthed conductor of the DC power supply circuit and the earthing
• The system must be connected directly to one of the following:
the DC power supply system earthing electrode conductor
a bonding jumper from an earthing terminal bar or bus to which the DC
power supply system earthing electrode conductor is connected
• The system must be located in the same immediate area (for example,
adjacent cabinets) as any other equipment that has a connection between the
earthed conductor of the same DC power supply circuit and the earthing
conductor, and the point of earthing of the DC system. The DC system must
not be earthed elsewhere.
• The DC source must be located within the same premises as the equipment.
• The earthed circuit conductor between the DC power source and the earthing
electrode conductor must not be connected to switching or disconnecting
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