New Product Single-phase Overvoltage/Undervoltage Relay K8DT-VW Detect abnormal voltages applies to equipment to protect against equipment failure. Monitor for overvoltages and undervoltages simultaneously with one Relay. Monitor AC or DC voltages with one Relay. Settings for the operating value, hysteresis, and operating time. Width of 17.5 mm to reduce space required in panels. Push-In Plus Terminal that reduce wiring work. The use of cage clamps enables wiring with bare stranded wires. Double-insertion holes for crossover wiring (all terminals). UL listed for easy shipping to North America. Models added with transistor outputs for superior contact reliability. For the most recent information on models that have been certified for safety Refer to Safety Precautions on page 8. standards, refer to your OMRON website. Refer to page 7 for commonly asked questions. Ordering Information Single-phase Overvoltage/Undervoltage Relay Setting range Power supply voltage Output Model Relay: SPDT contact output K8DT-VW2CD 24 VAC/DC 1 to 10 V AC/DC Transistor: NPN output K8DT-VW2TD 3 to 30 V AC/DC Relay: SPDT contact output K8DT-VW2CA 15 to 150 V AC/DC 100 to 240 VAC Transistor: NPN output K8DT-VW2TA Relay: SPDT contact output K8DT-VW3CD 24 VAC/DC 20 to 200 V AC/DC Transistor: NPN output K8DT-VW3TD 30 to 300 V AC/DC Relay: SPDT contact output K8DT-VW3CA 60 to 600 V AC/DC 100 to 240 VAC Transistor: NPN output K8DT-VW3TA Options (Order Separately) Front Cover Appearance Model Y92A-D1A Ratings and Specifications Input Range Model Range * Connection terminal Setting range Input impedance Overload capacity 0 to 10 V AC/DC V1-COM 1 to 10 V AC/DC Approx. 120 k K8AK-VW2 0 to 30 V AC/DC V2-COM 3 to 30 V AC/DC Approx. 320 k Continuous input at 115% of 0 to 150 V AC/DC V3-COM 15 to 150 V AC/DC Approx. 1.6 M maximum input. 10 s at 125% 0 to 200 V AC/DC V1-COM 20 to 200 V AC/DC Approx. 1.2 M (up to 600 VAC) K8AK-VW3 0 to 300 V AC/DC V2-COM 30 to 300 V AC/DC Approx. 1.7 M 0 to 600 V AC/DC V3-COM 60 to 600 V AC/DC Approx. 3.1 M * The range is selected using connected terminals. 1K8DT-VW Ratings Specifications Power supply K8DT-VW D: 24 VAC 50/60 Hz, 24 VDC Allowable operating 85% to 110% of rated power supply voltage voltage K8DT-VW A: 100 to 240 VAC 50/60 Hz voltage range 24 VAC/DC: 1.8 VA/1 W max. Allowable operating Power consumption 50/60 Hz 5 Hz 100 to 240 VAC: 2.5 VA max. frequency range Rated insulation Input frequency range 40 to 500 Hz 600 VAC voltage Continuous input at 115% of maximum input, 10 Overload capacity 10% to 100% of the maximum value of the setting s at 125% (up to 600 VAC). range Operating 0.5% full scale (at 25C and 65% humidity, rated K8DT-VW2: 1 to 10 V AC/DC value power supply voltage) Operating value setting 3 to 30 V AC/DC Repeat range (AL1 and AL2) 15 to 150 V AC/DC accuracy Operating 50 ms (at 25C and 65% humidity, rated power K8DT-VW3: 20 to 200 V AC/DC time supply voltage) 30 to 300 V AC/DC 60 to 600 V AC/DC EN 60947-5-1 Conforming Installation environment (pollution level 2, standards Operating value 100% operation at set value Overvoltage category III) Applicable Reset value 5% of operating value (fixed) standards EMC EN 60947-5-1 Manual reset/automatic reset (switchable) Safety UL 60947-5-1 (Listing), Korean Radio Waves Act Reset method Manual reset: Turn OFF power supply for 1 s or standards (Act 10564), CCC (GB14048.5) longer. 20 M min. Operating time Between all external terminals and the case 0.1 to 30 s setting range (T) Between all power supply terminals and all input terminals Power ON lock time 1 s or 5 s (Switched using DIP switch.) Insulation resistance Between all power supply terminals and all Power (PWR): Green, Relay output (RY): Yellow, output terminals Indicators Alarm output1 (AL1): Red, Between all input terminals and all output Alarm output2 (AL2): Red terminals Input impedance Refer to Input Range on page 1. 2,000 VAC for 1 min Between all external terminals and the case Relay: SPDT contact output Output form Between all power supply terminals and all Transistor: NPN output input terminals Dielectric strength Rated load Between all power supply terminals and all 5 A at 250 VAC (Resistive load) output terminals 5 A at 30 VDC (Resistive load) Between all input terminals and all output 1 A at 250 VAC (Inductive load) terminals 0.2 A at 48 VDC (Inductive load) Impulse withstand 6 kV (between live terminals and exposed, Output relay ratings Minimum load: 5 VDC, 10 mA (reference values) voltage non-charged metal parts) Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 Square-wave noise of 1 s/100-ns pulse width operations with 1-ns rise time 3 A at 250 VAC or 30 VDC: 100,000 100 to 240 VAC: 1,500 V power supply terminal operations Noise immunity common/normal mode 24 VAC: 1,500 V power supply terminal common/ Contact form: SPST-NO (NPN transistor) Transistor output normal mode Rated voltage: 24 VDC (maximum voltage: 26.4 VDC) ratings 24 VDC: 480 V power supply terminal common Maximum current: 50 mA DC Frequency: 10 to 55 Hz, 0.35-mm single Ambient operating 2 20 to 60C (with no condensation or icing) Vibration resistance amplitude, acceleration 50 m/s temperature 10 sweeps of 5 min each in X,Y, and Z directions Storage temperature 25 to 65C (with no condensation or icing) 2 100 m/s , 3 times each in 6 directions along 3 Shock resistance Ambient operating axes 25% to 85% RH (with no condensation) humidity Degree of protection Terminals: IP20 Storage humidity 25% to 85% RH (with no condensation) Altitude 2,000 m max. Applicable wires Stranded wires, solid wires, or ferrules 2 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 insertions 50 times 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 (WHD) 2