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PLSED309039EN PM1000 Series Power Meters

08/2010 Chapter 4 – Safety Precautions

Chapter 4: Safety Precautions

This section contains important safety precautions that must be followed

before attempting to install, service, or maintain electrical equipment.

Carefully read and follow the safety precautions outlined below.

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical

work practices. In the USA, see NFPA 70E.

 Only qualified electrical workers should install this equipment. Such work should be

performed only after reading this entire set of instructions.

 If the equipment is not used in a manner specified by the manufacturer, the

protection provided by the equipment may be impaired.

 NEVER work alone.

 Before performing visual inspections, tests, or maintenance on this equipment,

disconnect all sources of electric power. Assume that all circuits are live until they

have been completely de-energized, tested, and tagged. Pay particular attention to

the design of the power system. Consider all sources of power, including the

possibility of back feeding.

 Turn off all power supplying the power meter and the equipment in which it is

installed before working on it.

 Always use a properly rated voltage sensing device to confirm that all power is off.

 Before closing all covers and doors, inspect the work area for tools and objects that

may have been left inside the equipment.

 When removing or installing panels do not allow them to extend into the energized

bus.

 The successful operation of this equipment depends upon proper handling,

installation, and operation. Neglecting fundamental installation requirements may

lead to personal injury as well as damage to electrical equipment or other property.

 NEVER bypass external fusing.

 NEVER short the secondary of a PT.

 NEVER open circuit a CT; use the shorting block to short circuit the leads of the CT

before removing the connection from the power meter.

 Before performing Dielectric (Hi-Pot) or Megger testing on any equipment in which

the power meter is installed, disconnect all input and output wires to the power

meter. High voltage testing may damage electronic components contained in the

power meter.

 The power meter should be installed in a suitable electrical enclosure.

Failure to follow these instructions will result in death or serious injury

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