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4 Powermonitor 3000 Master Module

Publication 1404-IN007F-EN-P - November 2009

Safety Considerations

PT Potential transformer (also known as VT in some countries)

RAM Random access memory

RFI Radio frequency interference

R I/O Remote input/output

RMS Root–mean–square

SLC Small logic controller

SPDT Single pole double throw

UL Underwriters Laboratories

VA Volt–ampere

VAR Volt–ampere reactive

CIP Control and information protocol

NAP Network access port

ATTENTION

Only qualified personnel, following accepted safety procedures, should install, wire, and

service the Powermonitor 3000 unit and its associated components. Before beginning

any work, disconnect all sources of power and verify that they are de-energized and

locked out. Failure to follow these instructions may result in personal injury or death,

property damage, or economic loss.

Never open a current transformer (CT) secondary circuit with primary current applied.

Wiring between the CTs and the Powermonitor 3000 unit should include a shorting

terminal block in the CT secondary circuit. Shorting the secondary with primary current

present allows other connections to be removed if needed. An open CT secondary with

primary current applied produces a hazardous voltage, which can lead to personal injury,

death, property damage, or economic loss.

Terms and Conventions

Abbreviation Term

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Cool Automation CoolMaster 3000T Specifiche Pagina 4