SAR-Hm and SAR-Hmc Chassis Installation Guide Mandatory Regulations
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2.6 Safety Approval for External DC Sources That
Power This Equipment
2.6.1 Low-Voltage DC Sources, Nominal 12/24/48 VDC
The low-voltage DC source, from which this equipment derives power, must be
safety approved (as per local requirements) and meet the requirements of a SELV
source as defined in IEC/UL/CSA/EN 60950-1, or an ES2 source as defined in
IEC/UL/CSA/EN 62368-1.
2.6.2 High-Voltage DC Sources, 88 to 300 VDC
The high voltage DC source, from which the HV-PS35 external Power Supply derives
power, must be safety approved (as per local requirements) and meet the
requirements of a Hazardous Voltage Secondary source as defined in
IEC/UL/CSA/EN 60950-1, or an ES3 source as defined in IEC/UL/CSA/EN 62368-1.
The external DC source must have double or reinforced levels of insulation, isolating
the DC output from the AC mains. (AC mains are sources up to and including
300 Vrms, including 230/400 V and 277/480 V sources).
Note: Only the low-voltage DC option is approved for hazardous locations.
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