ABB HiPerGuard MV UPS User Manual page 17

Symbol/sign Meaning
D A N G E R – Arc flash
Arc flash is a dangerous phenomenon associated with operation at medium voltages.
It may be caused by switchgear failure, insulation breakdown or foreign object
intrusion. It may result in severe burns, severe eye injury, blindness or death. To
minimize the risk, keep all doors closed and covers in place while operating the
equipment.
Observe any arc flash protection boundaries that may be in place around the MVM and
Medium Voltage Switchgear enclosures
D A N G E R – Potential material hazard of batteries and capacitors
If a battery or capacitor is damaged electrically or physically, the resulting debris could
represent a material hazard. Refer to the appropriate Material Safety Data Sheet for
information on safe handling and disposal.
Safety labels are attached to the enclosures to alert personnel of potential hazards when working on the
equipment. The instructions on the safety labels must always be followed, and the labels must be kept in
a perfectly legible condition.
HI PE RG UA RD M V UP S U S E R M A N UA L
S A FET Y
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