User`s guide

Rack Mounting
Chapter 19 Specifications and Certifications 310
• Power and wiring:
• This equipment is for indoor use and all the communication wirings
are limited to inside of the building.
• Locate the DC supply source within the same premises as the
equipment.
• Check equipment nameplate ratings before connecting to the supply
circuit to avoid overloads that may damage over-current protection
devices and supply wiring.
• Maintain reliable earthing of rack-mounted equipment. Pay
particular attention to supply connections other than direct
connections to the branch circuit.
• Connect equipment to a DC supply source (reliably earthed) that is
electrically isolated from the AC source.
• Directly connect the equipment chassis to the DC supply system-
grounding electrode conductor or a bonding jumper from a
grounding terminal bar (or bus) that is connected to the DC supply
system grounding electrode conductor.
• Contain equipment that has a connection between the grounded
conductor of the same DC supply circuit, the grounding conductor,
and also the point of grounding of the DC system in the same
immediate area. Do not ground the equipment elsewhere.
• Route away and secure all DC input wiring from sharp edges to
prevent chaffing as well as provide strain relief.
• Provide a readily accessible disconnect device and protective
device a fixed wiring for a DC power supply suitable for the specified
rated voltage and current. Disconnect and protective devices to be
rated 2A Amps maximum.