New Product Phase-sequence Phase-loss Relay K8DT-PH Protect motors and other equipment from unstable LR voltages in the power supply system. Protect motors and other equipment by detecting phase sequence and phase loss for three-phase power supplies. Phase loss detection while the motor is operating. Global application with power supply range of 200 to 480 V with one Relay. Greater resistance to inverter noise. Width of 17.5 mm to reduce space required in panels. Push-In Plus Terminal that reduce wiring work. For the most recent information on models that have been certified for safety The use of cage clamps enables wiring with bare stranded wires. standards, refer to your OMRON website. Double-insertion holes for crossover wiring (all terminals). UL listed for easy shipping to North America. Certified for maritime standards (LR). Models added with transistor outputs for superior contact reliability. Refer to Safety Precautions on page 7. Refer to page 6 for commonly asked questions. Ordering Information Phase-sequence Phase-loss Relay Function Rated input voltage * Relay output Model Relay: SPDT contact output K8DT-PH1CN Phase sequence and phase loss 3-phase, 3-wire 200 to 480 VAC monitoring Transistor K8DT-PH1TN * The power supply voltage is the same as the rated input voltage. Options (Order Separately) Front Cover Appearance Model Y92A-D1A 1K8DT-PH Ratings and Specifications Ratings Specifications Rated input voltage 3-phase, 200 to 480 VAC (3-wire) Input frequency 45 to 65 Hz range Input load Approx. 2.6 VA Rated insulation Overload capacity Continuous 528 V 528 VAC voltage 80%10% of rated input Calculation Formula Phase 0.1 s 0.05 s Phase loss detection = 1 ((Hig hest phase-to-phase voltage sequence Operating level Lowest phase-to-phase voltage)/ time 0.1 s max. (when the voltage changes Phase loss Average three-phase phase-to-phase rapidly from 100% to 0% of rated voltage) voltage) Reset method Automatic reset EN 60947-5-1 Conforming Power (PWR): Green, Installation environment (pollution level 2, Indicators standards Output (OUT): Yellow Overvoltage category III) Applicable Relay Output: SPDT contact EMC EN 60947-5-1 Output form standards Transistor Output: 1 UL 60947-5-1 (Listing), Korean Radio Safety Rated load Waves Act (Act 10564), CCC (GB14048.5), standards 5 A at 250 VAC (Resistive load) LR (Category ENV1.2) 5 A at 30 VDC (Resistive load) 20 M min. 1 A at 250 VAC (Inductive load) Between external terminals and case 0.2 A at 48 VDC (Inductive load) Insulation resistance Between input terminals and output Output relay ratings Minimum load: 5 VDC, 10 mA (reference values) terminals Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC or 30 VDC: 2,000 VAC for one minute 50,000 operations Between external terminals and case Dielectric strength 3 A at 250 VAC or 30 VDC: Between input terminals and output 100,000 operations terminals Impulse withstand 6 kV (between live terminals and exposed, Rated voltage: 24 VDC (maximum voltage: Transistor output voltage non-charged metal parts) 26.4 VDC) ratings Maximum current: 50 mA DC 1,500 V power supply terminal common/ Ambient operating normal mode Noise immunity 20 to 60C (with no c ondensation or icing) Square-wave noise of 1 s/100 ns pulse temperature width with 1-ns rise time Storage temperature 25 to 65C (with no c ondensation or icing) Frequency: 10 to 55 Hz, 0.35-mm single Ambient operating 25% to 85% RH (with no condensation) amplitude humidity Vibration resistance 10 sweeps of 5 min each in X,Y, and Z Storage humidity 25% to 85% RH (with no condensation) directions 2 Altitude 2,000 m max. 100 m/s , 3 times each in 6 directions along Shock resistance 3 axes Applicable wires Stranded wires, solid wires, or ferrules 2 Degree of protection Terminals: IP20 Applicable wire size 0.25 to 1.5 mm (AWG24 to AWG16) Wire insertion force 8 N max. for AWG20 wire Screwdriver 15 N max. insertion force Wire stripping length 8 mm Ferrule length 8 mm XW4Z-00B (Omron) Recommended flat- SZF 0.4 2. 5 (Phoenix Contact) blade screwdriver 210-719 (Wago) SDI 0.4 2.5 75 (Weidmuller) Current capacity 10 A (per pole) Number of 50 times insertions Case color N1.5 Case material PC, UL 94 V-0 Weight Approx. 100 g Mounting Mounts to DIN Track, or screw mounting Dimensions 17.5 90 90 mm (W D H) 2