Safety Precautions - Delta DPM-D520I User Manual

1.3

Safety Precautions

Installation Notes
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Install the power meter according to instructions on the manual. Use appropriate
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personal protective equipment (PPE) and follow safe electrical work practices.
Only qualified electrical workers should install this equipment. Such work should be
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performed only after reading the entire set of installation instructions.
Operate the power meter according to instructions on the manual. Neglecting
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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.
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Operation Notes
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DO NOT work alone.
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Before performing visual inspections, tests, or maintenance on this equipment,
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disconnect all electric power sources.
Always use a properly rated voltage sensing device to confirm that power is off.
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Replace all devices, doors and covers before turning on power to this equipment.
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Carefully inspect the work area for tools and objects that may have been left inside
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the equipment.
Operation Notes

Never short the secondary of a Power Transformer (PT).
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Never open circuit a Current Transformer (CT)
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Ensure that the CT secondary winding is fixed securely on the equipment. It may
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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
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as well as meeting the accuracy specifications for IEC61869-2 class or accepted by
authority having jurisdiction (AHJ) in other areas.
Wiring Notes
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When the measured current is higher than the rated specification for the device,
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consider using an external current transformer (CT).
When the measured voltage is higher than the rated specification for the device,
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consider using an external potential transformer (PT) (line voltage: 35 to 690V AC L-L
or phase voltage: 20 to 400V AC L-N).
Connect only one cord to one plug on the quick connector.
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For the device is accidently unplugged, check the connecting cord and restart.
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Maintenance and Inspection Notes
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While cleaning the equipment, be sure to unplug all external power sources first. Use
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a dry cloth to clean the equipment's exterior. DO NOT open the equipment or touch
the wiring inside to prevent personal injury as well as damage to electrical equipment
or other property. DO NOT use aerosol sprays, solvents, or abrasives.
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