CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors August 2007 CA05311002E Ground Fault Sensors with Solid-State or Mechanical Relay Outputs EGF Series Ground Fault Sensors CurrentWatch Current Sensors Bright LED Status Indicators Contents Overview . . . . . . . . . . . . . . . . . . . . Model Selection, Switches . . . . . . Model Selection, Accessories . . . Wiring Diagrams . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . 1 2 3 5 6 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 outputs offers the benefit of reliable, long-lasting solid-state switches. Solid-state design provides unlimited switch operating life, superior resistance to shock and vibration, zero off-state leakage, high switch speeds and high input-output isolation. Solid-state outputs have solidcore housings with screw terminals. Built-In Mounting Tabs Product Features ■ ■ ■ ■ Broad Range of Options to Meet Application Needs — N.O. or N.C., solidstate 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 threephases 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 The EGF Series with mechanical relay outputs are available in solidcore 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 “triset” option, which provides three factory-set, field-adjustable setpoints. Typical Applications Approvals ■ ■ Choice of Solid-State or Mechanical Relays ■ ■ Personnel Protection (Typically 5 mA) — Detects sensitive ground fault conditions, 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 UL Recognized ”Zero Sum” Operating Principle Unless otherwise noted, the products contained in this document are not designed or intended for use in human safety applications. 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. CA05311002E For more information visit: www.eaton.com 1 2 CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors August 2007 Example Application — CurrentWatch EGF Series Insulation Breakdown Monitoring Ground Fault Sensor Circuit Interruption Device E.g. Contactor Leakage to Ground Model Selection — CurrentWatch EGF Series Power Supply Setpoint AC Solid-State Output DC Solid-State Output 120V AC Fixed, 50 mA Solid-State, N.O., 1A @ 240V AC — Solid-State, N.C., 1A @ 240V AC — Contacts Catalog Number Normally Energized EGF1NOACNE050 Normally De-energized EGF1NOACDE050 Normally Energized EGF1NCACNE050 Normally De-energized EGF1NCACDE050 Normally Energized EGF1NODCNE050 Normally De-energized EGF1NODCDE050 Normally Energized EGF1NCDCNE050 Normally De-energized EGF1NCDCDE050 Normally Energized EGF1NOACNE100 Normally De-energized EGF1NOACDE100 Normally Energized EGF1NCACNE100 Normally De-energized EGF1NCACDE100 Normally Energized EGF1NODCNE100 Normally De-energized EGF1NODCDE100 Normally Energized EGF1NCDCNE100 Normally De-energized EGF1NCDCDE100 Normally Energized EGF3NOACNET3 Normally De-energized EGF3NOACDET3 Normally Energized EGF3NCACNET3 Normally De-energized EGF3NCACDET3 Normally Energized EGF3NODCNET3 Normally De-energized EGF3NODCDET3 Normally Energized EGF3NCDCNET3 Normally De-energized EGF3NCDCDET3 Solid-State Output Sensors Solid-Core Housings — — Fixed, 100 mA Solid-State, N.O., 0.15A @ 30V DC Solid-State, N.C., 0.15A @ 30V DC Solid-State, N.O., 1A @ 240V AC — Solid-State, N.C., 1A @ 240V AC — — — Solid-State, N.O., 0.15A @ 30V DC Solid-State, N.C., 0.15A @ 30V DC Tri-Set Adjustable, Solid-State, N.O., 5, 10 or 30 mA 1A @ 240V AC — Solid-State, N.C., 1A @ 240V AC — — — Solid-State, N.O., 0.15A @ 30V DC Solid-State, N.C., 0.15A @ 30V DC Stocked product, typical order quantities guaranteed in stock. For more information visit: www.eaton.com CA05311002E CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors 3 August 2007 Model Selection — CurrentWatch EGF Series (Continued) Power Supply Setpoint Mechanical Relay Output Contacts Catalog Number 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 Output Sensors Solid-Core Housings Mechanical Relay, SPDT Form C, Auto-Reset (1A @ 120V AC) Fixed, 100 mA Normally Energized EGF1SPDTNE050 Normally De-energized EGF1SPDTDE050 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) Tri-set Adjustable, 5, 10 or 30 mA Normally Energized EGF1SPDTNE100 Normally De-energized EGF1SPDTDE100 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) 24V AC/DC Fixed, 50 mA Normally Energized EGF1SPDTNET3 Normally De-energized EGF1SPDTDET3 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) Fixed, 100 mA Normally Energized EGF2SPDTNE050 Normally De-energized EGF2SPDTDE050 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) Tri-set Adjustable, 5, 10 or 30 mA Normally Energized EGF2SPDTNE100 Normally De-energized EGF2SPDTDE100 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 Normally Energized EGF2SPDTNET3 Normally De-energized EGF2SPDTDET3 Mechanical Relay, SPDT Form C, Auto-Reset (2A @ 30V DC) Stocked product, typical order quantities guaranteed in stock. Accessories — CurrentWatch EGF Series Description Catalog Number DIN Rail Mounting Kit (Sensor pictured for reference and not included in kit) EDINKIT Stocked product, typical order quantities guaranteed in stock. CA05311002E For more information visit: www.eaton.com 4 CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors August 2007 Output Table — CurrentWatch EGF Series Normally Energized Models Protection from faults and control power loss. Control Power Applied No Power No Fault Fault Normally Open Models Open Closed Open Normally Closed Models Closed Open Closed Normally De-energized Models Protection from faults only when power is applied. Control Power Applied No Power No Fault Fault Normally Open Models Open Open Closed Normally Closed Models Closed Closed Open 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 “reset” terminals. For more information visit: www.eaton.com CA05311002E CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors August 2007 Wiring Diagrams — CurrentWatch EGF Series Models Wiring Diagrams Solid-State Output Models Power R Output Test G Power HOT NEUT 1Ø Power 1Ø Load Output Power Interupt EGF Series Power ØA ØB ØC ØN Power ØA ØB ØC Power Interupt EGF Series 3Ø Delta Power 3Ø Load Output Power Interupt EGF Series Power ØA ØB Mechanical Relay Output Models 3Ø Wye Power 3Ø Load Output Power Interupt EGF Series Latching Models 1 2 Power 3Ø Power 1Ø Load Output External Reset Switch 3 4 5 6 G R Power Status Output Test Jumper Location of Tri-set Models Auto Reset Models 1 2 Power 3 4 5 6 G R Power Status Output Test Jumper Location of Tri-set Models CA05311002E For more information visit: www.eaton.com 5 6 CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors August 2007 Specifications — CurrentWatch EGF Series Description Solid-State Output Models Power Supply Mechanical Relay Output Models 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 µA 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 Isolation Voltage Sensing Aperture LED Indicator Housing Environmental Approvals 2 VA max. 5,000V AC (tested) 0.74 in. (19 mm) dia. Green LED for Power On Status; Red LED for Contact Status UL94 V0 Flammability Rated Operating Temperature: -4 to 122°F (-20 to 50°C) Humidity: 0 – 95% RH, Non-condensing UL 1053, Class 1 Recognized, CE For more information visit: www.eaton.com CA05311002E CurrentWatch™ Current Sensors EGF Series Ground Fault Sensors August 2007 Approximate Dimensions — CurrentWatch EGF Series Models Approximate Dimensions in Inches (mm) Solid-State Output Models TEST 0.20 (5.1) Dia. 3.38 (86) 1.50 (38) 2.90 (73.7) 0.75 (19.1) Dia. Mechanical Relay Models Auto Reset (6 Terminals) 2.25 (57.2) 1.88 (47.6) 2.50 (63) Latching (7 Terminals) 0.75 Dia (19.1) 0.44 (11.2) 2.50 (63.5) 3.88 (98.6) 0.20 Dia (5.1) TEST 2.90 (73.7) 3.38 (85.9) CA05311002E For more information visit: www.eaton.com 7