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EGF3NOACNET3 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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EGF3NOACNET3 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
1 / 7 page August 2007 CA05311002E For more information visit: www.eaton.com 1 CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors CA05311002E EGF Series Ground Fault Sensors CurrentWatch Current Sensors Contents Overview . . . . . . . . . . . . . . . . . . . . 1 Model Selection, Switches . . . . . . 2 Model Selection, Accessories . . . 3 Wiring Diagrams . . . . . . . . . . . . . . 5 Specifications . . . . . . . . . . . . . . . . 6 Dimensions . . . . . . . . . . . . . . . . . . 7 The CurrentWatch EGF Series from Eaton’s electrical business is a family of ground fault (earth leakage) sensors. Ground fault sensors help protect people, products and processes from damage by ground fault conditions by monitoring all current-carrying conductors in grounded single- and three-phase delta or wye systems. The EGF Series is available with either solid-state or mechanical relay outputs. The EGF Series with solid-state out- puts offers the benefit of reliable, long-lasting solid-state switches. Solid-state design provides unlim- ited switch operating life, superior resistance to shock and vibration, zero off-state leakage, high switch speeds and high input-output isola- tion. Solid-state outputs have solid- core housings with screw terminals. The EGF Series with mechanical relay outputs are available in solid- core housings with a choice of N.O. or N.C. SPST latching relays and a SPDT Form C relay with auto-reset. All mechanical models can be ordered with a fixed setpoint or with a “tri- set” option, which provides three factory-set, field-adjustable setpoints. Approvals ■ UL Recognized Unless otherwise noted, the products contained in this document are not designed or intended for use in human safety applications. Ground Fault Sensors with Solid-State or Mechanical Relay Outputs Product Features ■ Broad Range of Options to Meet Application Needs — N.O. or N.C., solid- state or mechanical relays, normally energized or normally de-energized contacts ■ Setpoint Options Maximize Ease-of-Use and Application Flexibility — Field selectable 5, 10 or 30 mA setpoints on the EGF “Tri-set” models make user adjustments fast, sure and convenient ■ Compatible with Standard Equipment — Application on single- and three- phases systems, ideal for use with shunt trip breakers, and magnetically isolated from monitored circuit and control power ■ Agency Approved — UL and CE Certified, accepted worldwide Typical Applications ■ Personnel Protection (Typically 5 mA) — Detects sensitive ground fault con- ditions, which could cause injury to people, and functions as a sensor and alarm trigger when applied as an input to an overall ground fault protection system ■ Equipment Protection (Typically 10 or 30 mA) — For applications where personnel protection is not the primary concern, higher setpoint capability helps eliminate nuisance tripping while still providing adequate ground fault detection to protect machine electronics ■ Regulatory — Meets requirements as stipulated by governmental and industrial regulatory groups for ground fault sensing ”Zero Sum” Operating Principle In three-phase delta and wye systems, under normal conditions, current in the “hot” leg of a two-wire load is equal in magnitude but opposite in sign to the current in a neutral leg. As a result, the electromagnetic fields surrounding these two conductors cancel, producing a “zero sum current.” As soon as current leaks to ground (fault condition), the two currents become imbalanced and a net magnetic field results. The CurrentWatch EGF Series sensors monitor this field and trips the contacts when the leakage rises above the setpoint. For Customer Service in the U.S. call 1-877-ETN CARE (386-2273), in Canada call 1-800-268-3578. For Application Assistance in the U.S. and Canada call 1-800-426-9184. Built-In Mounting Tabs Choice of Solid-State or Mechanical Relays Bright LED Status Indicators |
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