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 speci?ations . . . . . . . . . . . . . . . . 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 bene? 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 housi ngs with a choice of n.o. or n.c. spst l atching relays and a spdt form c relay with auto-reset. all mechanical models can be ordered with a ?ed setpoint or with a ?ri- set?option, which provides three factory-set, ?ld -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 ?ri-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 certi?d, 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 ?ero sum?operating principle in three-phase delta and wye systems, under normal conditions, current in the ?ot?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 elds surrounding these two conductors cancel, producing a ?ero sum current.?as soon as current leaks to ground (fault condition), the two currents become imbalanced and a net magnetic ?ld results. the currentwatch egf series sensors monitor this eld 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
august 2007 2 for more information visit: www.eaton.com ca05311002e currentwatch current sensors egf series ground fault sensors example application ?currentwatch egf series model selection ?currentwatch egf series stocked product, typical order quantities guaranteed in stock. power supply setpoint ac solid-state output dc solid-state output contacts catalog number solid-state output sensors solid-core housing s 120v ac fixed, 50 ma solid-state, n.o., 1a @ 240v ac normally energized egf1noacne050 normally de-energized egf1noacde050 solid-state, n.c., 1a @ 240v ac normally energized egf1ncacne050 normally de-energized egf1ncacde050 solid-state, n.o., 0.15a @ 30v dc normally energized egf1nodcne050 normally de-energized egf1nodcde050 solid-state, n.c., 0.15a @ 30v dc normally energized egf1ncdcne050 normally de-energized EGF1NCDCDE050 fixed, 100 ma solid-state, n.o., 1a @ 240v ac normally energized egf1noacne100 normally de-energized egf1noacde100 solid-state, n.c., 1a @ 240v ac normally energized egf1ncacne100 normally de-energized egf1ncacde100 solid-state, n.o., 0.15a @ 30v dc normally energized egf1nodcne100 normally de-energized egf1nodcde100 solid-state, n.c., 0.15a @ 30v dc normally energized egf1ncdcne100 normally de-energized egf1ncdcde100 tri-set adjustable, 5, 10 or 30 ma solid-state, n.o., 1a @ 240v ac normally energized egf3noacnet3 normally de-energized egf3noacdet3 solid-state, n.c., 1a @ 240v ac normally energized egf3ncacnet3 normally de-energized egf3ncacdet3 solid-state, n.o., 0.15a @ 30v dc normally energized egf3nodcnet3 normally de-energized egf3nodcdet3 solid-state, n.c., 0.15a @ 30v dc normally energized egf3ncdcnet3 normally de-energized egf3ncdcdet3 grou n d fault s e n sor circuit i n terruptio n device e.g. co n tactor leakage to grou n d insulation breakdown monitoring
august 2007 ca05311002e for more information visit: www.eaton.com 3 currentwatch current sensors egf series ground fault sensors model selection ?currentwatch egf series (continued) stocked product, typical order quantities guaranteed in stock. accessories ?currentwatch egf series stocked product, typical order quantities guaranteed in stock. power supply setpoint mechanical relay output contacts catalog number mechanical relay output sensors solid-core housing s 120v ac fixed, 50 ma mechanical relay, n.o. spst relay, form a (1a @ 120v ac) latching relay egf1nola050 mechanical relay, n.c. spst relay, form b (1a @ 120v ac) latching relay egf1ncla050 mechanical relay, spdt form c, auto-reset (1a @ 120v ac) normally energized egf1spdtne050 normally de-energized egf1spdtde050 fixed, 100 ma mechanical relay, n.o. spst relay, form a (1a @ 120v ac) latching relay egf1nola100 mechanical relay, n.c. spst relay, form b (1a @ 120v ac) latching relay egf1ncla100 mechanical relay, spdt form c, auto-reset (1a @ 120v ac) normally energized egf1spdtne100 normally de-energized egf1spdtde100 tri-set adjustable, 5, 10 or 30 ma mechanical relay, n.o. spst relay, form a (1a @ 120v ac) latching relay egf1nolat3 mechanical relay, n.c. spst relay, form b (1a @ 120v ac) latching relay egf1nclat3 mechanical relay, spdt form c, auto-reset (1a @ 120v ac) normally energized egf1spdtnet3 normally de-energized egf1spdtdet3 24v ac/dc fixed, 50 ma mechanical relay, n.o. spst relay, form a (2a @ 30v dc) latching relay egf2nola050 mechanical relay, n.c. spst relay, form b (2a @ 30v dc) latching relay egf2ncla050 mechanical relay, spdt form c, auto-reset (2a @ 30v dc) normally energized egf2spdtne050 normally de-energized egf2spdtde050 fixed, 100 ma mechanical relay, n.o. spst relay, form a (2a @ 30v dc) latching relay egf2nola100 mechanical relay, n.c. spst relay, form b (2a @ 30v dc) latching relay egf2ncla100 mechanical relay, spdt form c, auto-reset (2a @ 30v dc) normally energized egf2spdtne100 normally de-energized egf2spdtde100 tri-set adjustable, 5, 10 or 30 ma mechanical relay, n.o. spst relay, form a (2a @ 30v dc) latching relay egf2nolat3 mechanical relay, n.c. spst relay, form b (2a @ 30v dc) latching relay egf2nclat3 mechanical relay, spdt form c, auto-reset (2a @ 30v dc) normally energized egf2spdtnet3 normally de-energized egf2spdtdet3 description catalog number din rail mounting kit (sensor pictured for reference and not included in kit) edinkit
august 2007 4 for more information visit: www.eaton.com ca05311002e currentwatch current sensors egf series ground fault sensors output table ?currentwatch egf series normally energized models protection from faults and control power loss. normally de-energized models protection from faults only when power is applied. latching (mechanical relay output) models latching models power up initially in the rest (normal) mode. if there is a fault condition or the test button is pushed, the output contacts will change state and latch. the output will remain latched regardless of whether the fault is cleared or control power is removed. to reset the output, apply a momentary contact across ?eset?terminals. control power applied no power no fault fault normally open models open closed open normally closed models closed open closed control power applied no power no fault fault normally open models open open closed normally closed models closed closed open
august 2007 ca05311002e for more information visit: www.eaton.com 5 currentwatch current sensors egf series ground fault sensors wiring diagrams ?currentwatch egf series models wiring diagrams solid-state output models mechanical relay output models test g r power output power output power i n terupt power i n terupt power i n terupt power i n terupt hot neut 1 power 1 load power output a b c n 3 wye power 3 load power output a b 3 power 1 load power output a b c 3 delta power 3 load egf s eries egf s eries egf s eries egf s eries latching m o d els auto reset m o d els jumper locatio n of tri-set models exter n al reset s witch jumper locatio n of tri-set models gr gr power output 123456 123456 s tatus power power s tatus power output test test
6 for more information visit: www.eaton.com ca05311002e currentwatch current sensors august 2007 egf series ground fault sensors speci?ations ?currentwatch egf series description solid-state output models mechanical relay output models power supply 120v ac (55 ?110% of nominal voltage) 24v ac/dc (?20%) output contact type isolated dry contact mechanical relay output rating (switching current and switching voltage) ac output switching models: 1a @ 240v ac dc output switching models: 0.15a @ 30v dc auto reset models: spdt relay 1a @ 120v ac 2a @ 30v dc latching models: spst relay 1a @ 120v ac 2a @ 30v dc off-state leakage n.o. models: < 10 ? n.c. models: < 2.5 ma none response time 200 ms @ 5% above trip point 60 ms @ 50% above trip point 15 ms @ 500% above trip point frequency range 50 ?400 hz (monitored circuit) loading 2 va max. isolation voltage 5,000v ac (tested) sensing aperture 0.74 in. (19 mm) dia. led indicator green led for power on status; red led for contact status housing ul94 v0 flammability rated environmental operating temperature: -4 to 122? (-20 to 50?) humidity: 0 ?95% rh, non-condensing approvals ul 1053, class 1 recognized, ce
august 2007 ca05311002e for more information visit: www.eaton.com 7 currentwatch current sensors egf series ground fault sensors approximate dimensions ?currentwatch egf series models approximate dimensions in inches (mm) solid-state output models mechanical relay models 0.20 (5.1) dia. 0.75 (19.1) dia. 3.38 (86) 2.50 (63) 2.90 (73.7) test 1.50 (38) 0.44 (11.2) 2.25 (57.2) latchi n g (7 termi n als) 1.88 (47.6) 2.50 (63.5) 3.88 (98.6) 2.90 (73.7) 3.38 (85.9) 0.75 dia (19.1) 0.20 dia (5.1) te s t auto reset (6 termi n als)
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