EVT Series VoltageWatch Voltage Sensors

Sensors and limit switches

VoltageWatch sensor is a high-performance, true rms sensor for sensing voltage in single- and three-phase installations. Applicable on nominal circuits of 120 V, 240 V and 480 V, 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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EVT Series VoltageWatch voltage sensors core features

True rms output—allows for use in situations where power supplied is non-sinusoidal
Standard 4–20 mA loop powered output—industry standard output works easily and reliably with existing controllers

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 in which the EVT Series voltage sensors excel

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 three-phase motor
Monitor overvoltage conditions associated with regenerative voltage to help in diagnosing/avoiding motor drive issues
Detect voltage conditions that may causes tress in or damage to soft starter components (SCRs)

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Brochures

Eaton's complete line of sensing technologies

(PDF 366 KB , 08/29/2020)

Catalogs

Current and voltage sensors - CA08100010E

Volume 8, Tab 7

(PDF 920 KB , 09/30/2017)

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EVT Series VoltageWatch voltage sensors