Direct Current Sensing Relay The CR5395 Series, Direct Current Sensing Relay provides a precision and cost effective method for monitoring Direct Cur- CR5395 Series rent. Magnetic Modulator Technology is utilized for the current sensing to provide a stable and highly repeatable current trip. The current-carrying wire is routed through the opening extend- ing through the top of the case. When current reaches the level set by the trip point adjustment, the relay trips and starts the ad- justable timer. After the timer cycles the electromechanical relay energizes. Applications DC motor drives Battery Chargers Power Supply Management Uninterruptible Power Systems Motor Application OUTPUT OPTIONS The Relay is available with three different output Features configurations, electromechanical relay, op- Variable Trip Point and Time Delay toisolated NPN transistor or ZeroCrossing op- Bi-polar toisolated triac. Specify desired selection in part Monitors Currents from 1.0 ADC to 100 ADC number. Electrical Isolation Between Circuits Output Relay Rated up to 20 Amps LED Trip Status Indicator RELAY (-ELR) Dead Band Prevents Relay Chatter Arrangement: 1 Form C (SPDT) Calibrated Dial E Contact Material: Silver-cadmium oxide External Current Transformers Available 1/4” Terminals: 3 Male QC Mechanical Life: 10 million operations, Specifications typ.@ rated load Mounting: Electrical Life: 100,000 operations, 15/16 15/16 3/16” dia. clearance holes on 1 ”by 2 ”centers typ. @ rated load Environmental: Initial Contact Resistance: Operating Temperature: -30° C to +70° C 50 milliohms max. @ 500 mA, 12 VDC Contact Rating: UL508/873 & CSA Storage Temperature: -55° C to +85° 0-95% RH, Non-condensing Input Supply Power: DC SWITCHING (-NPN) Typical 80mA Max 100mA Vce (full off): 30 VDC max. Sensed Current: Isink (full on): 120 mADC max.@ rated full-on Max. Continuous: 200% Full Scale Vce (full on): 1.5 VDC @ 120 mADC Isink Weight 0.5 LBS. Off state leakage current: 5ua @ 30 VDC (typical) 1/4” Regulatory Agencies Terminals: 2 Male QC AC SWITCHING (-TRC) Off state voltage: 240 VAC RMS max. VOLTAGE LOAD TYPE N.O. CONTACT N.C. CONTACT Minimum switch voltage: 24 VAC RMS 240 VAC Resistive 20A 10A On state current: 500 mA RMS max. continuous 240 VAC Motor 2HP 1/2 HP Switching mode: Zero Crossing Off state leakage: 60 ua @ 240 VAC max. 1/4 HP 125 VAC Motor 1HP Terminals: 2 @ 1/4” Male QC 28 VDC Resistive 20A 10A CR Magnetics, Inc. 3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119 Web: http://www.crmagnetics.com E-mail: sales@crmagnetics.com 62 Another HUNTINGTON ELECTRIC Company Relays and Switches Relays and Switches Direct Current Sensing Relay OUTLINE DRAWING CR5395 Series CRDCS A B C D OUTPUT RELAY TERMINALS 1.60 0.74 12 0.56 -050 SUPPLY TERMINAL 1/4 MALE TAB (3) PLACES 40.6 18.8 304.8 14.2 1/4 TAB (2) PLACES 2.70 1.65 12 0.70 3/16 [4.75] DIA. -100 68.6 42.0 304.8 17.8 D MOUNTING 3.25 1.75 12 0.80 (2) HOLES -200 82.55 44.50 304.8 20.8 THE "ON" DELAY A 13.2 TURN CLOCKWISE C 1/2" TO INCREASE 89.4  74.6 WINDOW 3 1/2"   2 15/16"    B 22.4 INDICATE LED  7/8" "ON" WHEN  RELAY IS TRIPPED 23 7.4 15/16"  REMOTE CRGFS 5/16" 7.1 49.2  CURRENT TRANSFORMER 53.5 38.3 1/4" 1 15/16" TERMINAL BLOCK CONNECTION 2 1/8" 1 1/2" DANGER: HIGH VOLTAGE 63.4 2 1/2" Top view of Current Sensing Relay Remote Current Transformers CRDCS - Series Shown with Remote Current Transformer Option (-R) PART NUMBER CR5395 - - - - - - - E I - INTERNAL TRANSFORMER TRIP POINT DIAL TRIP RANGE TRIP STATUS R - REMOTE TRANSFORMER CD - Calibrated Dial 110 - 1.0 to 10 ADC EH - Energized on High, trips SUPPLY VOLTAGE 330 - 3.0 to 30 ADC FP - Fixed Trip Point when sense current is above trip ACV - 85 to 265 VAC/VDC (Specify value of fixed 660 - 6.0 to 60 ADC point and returns to non-trip 24D - 24 VDC trippoint with order) 101 - 10 to 100 ADC status when sense current is No adjustment The trip ranges shown are for below the trip point. dial provided with All supply voltage tolerances the fixed set one wire pass through the are ± 10 % EL - Energized on Low, trips point option window opening. The trip range when sense current is below trip - CD - FP may be proportionally lowered -3.30 trip range shown point and returns to non-trip with additional wire passes through the window. status when sense current is above the trip point. OUTPUT OPTIONS LH - Latch on High, trips when TRIP ON DELAY NC NO COM + A - .5 to 6 Sec. sense current is above trip point + B - 2 to 25 Sec. and remains tripped until C - .1 to 1 Sec. - supply power is removed. X - none LL - Latch on Low, trips when Time-on delay is the time from when the relay trips to sense current is below trip point when the output energizes. The ranges are and remains tripped until supply ELR NPN TRC guaranteed minimum, actual range may be slightly Electromechanical Optoisolated Optoisolated power is removed. greater. Relay NPN Transistor Triac, Zero Crossing EXTERNAL CURRENT SENSING RING TRANSFORMER CRDCS - 050 - 0.74 dia. Window Available with external ring sensors capable of over 1000A of sensing 100 - 1.65 dia. Window range. Contact Factory for details. 200 - 1.75 dia. Window CR Magnetics, Inc. 3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119 Web: http://www.crmagnetics.com E-mail: sales@crmagnetics.com 63 Another HUNTINGTON ELECTRIC Company SUPPLY TIME DELAY MAX MIN 50 60 70 40 80 30 20 90 10 100 TRIPPED SUPPLY 15 20 TIME 10 REMOTE C.T. DELAY 25 DANGER 5 3 30 HIGH VOLTAGE MIN MAX D CURRENT TRIP 50 60 70 40 80 30 20 90 TRIPPED 10 100 CURRENT TRIP % FULL SCALE CURRENT TRIP % FULL SCALE