Eaton Electrical
EVT Series VoltageWatch Voltage Sensors

Key Features

  • True RMS Output—Allows for use in situations  where power supplied is  non-sinusoidal, such as  VFD applications, poor  power quality installations or other electrically harsh/challenging environments
  • Standard 4–20 mA Loop Powered Output—Industry standard output works easily and reliably with existing controllers, data loggers and SCADA equipment 
  • Input/Output Isolation—Input and output circuitry is electrically isolated for improved safety
  • Compact DIN Rail Mount Enclosure—Space-saving 35 mm wide enclosure mounts quickly for an attractive installation

Applications

  • Detect below normal or “brown out” voltage conditions; protect against possible motor overheating
  • Identify phase-loss conditions by detecting voltage reduction in one or more phases of a threephase motor
  • Monitor overvoltage conditions associated with regenerative voltage to help in diagnosing/avoiding motor drive issues
  • Detect voltage conditions that may cause stress in or damage to soft starter components (SCRs)

Standards and Certifications

  • UL
  • CE (Pending)
  • RoHS Compliant

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Eaton’s VoltageWatch™ sensor is a high-performance, true RMS sensor for sensing voltage in single- and threephase installations. Applicable on nominal circuits of 120V, 240V and 480V, this voltage sensor provides a fully isolated analog output proportional to rated nominal voltage in both sinusoidal and non-sinusoidal (variable frequency) situations. It is housed in a slim, compact, easy-to-install DIN rail mount enclosure.

Ideal for situations where power quality is of interest or concern, the VoltageWatch sensor facilitates monitoring of supply voltage levels, identifying undervoltage or overvoltage conditions, and helping to protect critical motors and electronics. Designed with an industry standard 4–20 mA output, VoltageWatch is easily coupled to a data logger, panel meter or PLC to enable basic trending of operational status of low voltage circuits up to real-time monitoring and reporting of supply voltage levels.

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