CRGFS-300

Ground Fault Sensor The CR7310 Series, Ground Fault Sensor provides a reliable and cost effective method for sensing ground faults. The current-carrying wires are routed through the opening extending from the top of the case. When ground current reaches the level set by the trip point adjustment, the relay trips, illuminates the tripped LED and provides an output signal. A precision voltage reference circuit ensures a highly repeatable trip point. The Sensor is rated as a Class 1 device. CR7310 Series Applications Monitor Electrical Heater Elements Sense Motor Over/Under Loads Detect Lamp burn-out Indicate Phase Loss OUTPUT OPTIONS The Relay is available with three different ouput configurations, electromechanical relay, optoisolated NPN transistor or zero-crossing optoisolated triac. Specify desired selection in part number. RELAY (-ELR) Relays, Switches & Sensors D Arrangement: 1 Form C (SPDT) Contact Material: Silver-cadmium oxide Terminals: 31/4” Male QC Mechanical Life: 10 million operations, typ.@ rated load Electrical Life: 100,000 operations, typ. @ rated load Initial Contact Resistance: 50 milliohms max. @ 500 mA, 12 VDC Contact Rating: UL508/873 & CSA DC SWITCHING (-NPN) Vce (full off): 30 VDC max. Isink (full on): 120 mADC max.@ rated full-on Vce (full on): 1.5 VDC @ 120 mADC Isink Off state leakage current: 5ua @ 30 VDC (typical) Terminals: 21/4” Male Q C AC SWITCHING (-TRC) Off state voltage: 240 VAC RMS max. Minimum switch voltage: 24 VAC RMS On state current: 500 mA RMS max. continuous Switching mode: Zero crossing Off state leakage: 60 ua @ 240 VAC max. Terminals: 2 @ 1/4” Male QC The Professional Energy Monitoring Company M N TI ISO 9001:2008 Quality Management System Features Variable Trip Point and Time Delay Monitors Currents from 10mAAC to 100 AAC Amps Electrical Isolation Between Circuits Output Relay Rated up to 20 Amps LED Trip Status Indicator Dead Band Prevents Relay Chatter Calibrated Dial Option Available External Current Transformers Available Specifications Mounting: 3/16” dia. clearance holes on 115/16” by 215/16”centers Environmental: Operating Temperature: -30° C to +60° C Storage Temperature: -55° C to +85° C Power-On Delay: 100 MS MAX Hysteresis: 5% Max. Input Supply Power: Typical 80mA Max 100mA Sensed Current: Max. Continuous: 200% Full Scale Frequency: 60-400 Hz * *All specifications for operation at 60 Hz only Altitude: 2000 meters max. (Contact factory for High Altitude applications) Weight 0.5 LBS. Regulatory Agencies E211244 VOLTAGE 240 VAC 240 VAC 125 VAC 28 VDC LOAD TYPE Resistive Motor Motor Resistive N.O. CONTACT 20A 2HP 1HP 20A N.C. CONTACT 10A 1/2 HP 3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119 Web: http://www.crmagnetics.com 66 E-mail: sales@crmagnetics.com 1/4 HP 10A Ground Fault Sensor CR7310 Series OUTLINE DRAWING A CRGFS B D -100 2.88 1.60 12 0.79 73.16 40.58 304.8 20.07 -200 3.25 1.75 12 0.82 82.55 44.45 304.8 20.83 A D C B Top view of Current Sensing Relay C Remote Current Transformers CRGFS - Series Shown with Remote Current Transformer Option (-R) PART NUMBER TRIP RANGE .011 - .01 to 0.1 AAC .11 - 0.1 to 1.0 AAC 110 - 1.0 to 10 AAC 330 - 3.0 to 30 AAC 660 - 6.0 to 60 AAC 101 - 10 to 100 AAC - I - INTERNAL TRANSFORMER R1 - REMOTE TRANSFORMER w/ CRGFS-100 (1.60” window diameter) R2 - REMOTE TRANSFORMER w/ CRGFS-200 (1.75” window diameter) TRIP POINT DIAL CD - Calibrated Dial FP - Fixed Trip Point 20 30 25 (Specify value of fixed trippoint with order) The trip ranges shown are for one wire pass through the window opening. The trip range may be proportionally lowered with additional wire passes through the window. D CURRENT TRIP All supply voltage tolerances are ± 10 % - 15 SUPPLY VOLTAGE AC 120 - 120 VAC 240 - 240 VAC DC 24D - 24 VDC - 3 - No adjustment dial provided with the fixed set point option - CD - FP -3.30 trip range shown OUTPUT OPTIONS TRIP ON DELAY A - .5 to 6 Sec. B - 2 to 25 Sec. C - .1 to 1 Sec. X - none NC NO COM + + - Time-on delay is the time from when the relay trips to when the output energizes. The ranges are guaranteed minimum, actual range may be slightly greater. ELR Electromechanical Relay NPN Optoisolated NPN Transistor Example Part Numbers: CR7310-EH-120-.011-CD-ELR-I (Relay with CT on board) CR7310-EL-240-.11-CD-NPN-R1 (Relay with external CRGFS-100) The Professional Energy Monitoring Company M N TI ISO 9001:2008 Quality Management System 3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119 Web: http://www.crmagnetics.com 67 E-mail: sales@crmagnetics.com TRC Optoisolated Triac, Zero Crossing D Relays, Switches, & Sensors TRIP STATUS EH - Energized on High, trips when sense current is above trip point and returns to non-trip status when sense current is below the trip point. EL - Energized on Low, trips when sense current is below trip point and returns to non-trip status when sense current is above the trip point. LH - Latch on High, trips when sense current is above trip point and remains tripped until supply power is removed. LL - Latch on Low, trips when sense current is below trip point and remains tripped until supply power is removed. - 5 - 10 CR7310