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DC Power Supply Precautions
The following precautions should be observed when installing chassis with DC power
supplies.
1.
Check nameplate ratings to assure there is no overloading of supply circuits that
could have an effect on overcurrent protection and supply wiring.
2.
When installing DC equipment, it must be installed only per the following
conditions:
a.
Connect the equipment to a ±7 to ±50 VDC supply source that is
electrically isolated form the alternating current source. The ±7 to ±50 VDC
source is to be connected to a SELV source.
b.
Input wiring to terminal block must be routed and secured in such a
manner that it is protected from damage and stress. Do not route wiring
past sharp edges or moving parts.
c.
A readily accessible disconnect device, with a 3 mm minimum contact gap,
shall be incorporated in the fixed wiring.
3.
Grounding: reliable grounding of this equipment must be maintained. Particular
attention should be given to supply connections when connecting to power
strips, rather than direct connections to the branch circuit.
5
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