Delta DPM-C520, Operation Manual

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D P M - C 5 2 0 / C 5 2 0W O p e r a t io n M a n u a l
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1.3
Safety Precautions

Installation Notes

Install the power meter according to instructions on the manual. Use appropriate
personal protective equipment (PPE) and follow safe electrical work practices.
 Only qualified electrical workers should install this equipment. Such work should be
performed only after reading the entire set of installation instructions.

Operate the power meter according to instructions on the manual. Neglecting
fundamental installation requirements may lead to personal injury as well as damage
to electrical equipment or other property.
 This equipment should be installed in a suitable insulated and fireproof enclosure.

Operation Notes
 DO NOT work alone.
 Before performing visual inspections, tests, or maintenance on this equipment,
disconnect all electric power sources.

Always use a properly rated voltage sensing device to confirm that power is off.
 Replace all devices, doors and covers before turning on power to this equipment.

Carefully inspect the work area for tools and objects that may have been left inside
the equipment.

Operation Notes
 Never short the secondary of a Power Transformer (PT).
 Never open circuit a Current Transformer (CT)

Ensure that the CT secondary winding is fixed securely on the equipment. It may
damage the equipment if the secondary winding becomes loose during operation.

When used with CTs, make sure the CTs are UL2808 listed in America and Canada
and meet or exceed the accuracy specifications for IEC61869-2 class or accepted by
authority having jurisdiction (AHJ) in other areas.