New Product Single-phase Voltage Relay K8AB-VS Ideal for voltage monitoring for industrial facilities and equipment. Monitor for overvoltages or undervoltages. Manual resetting and automatically resetting supported by one Relay. One SPDT output relay, 6 A at 250 VAC (resistive load). Output relay can be switched between normally open and normally closed. Process control signal (0 to 10 V) and current splitter input supported. Output status can be monitored using LED indicator. Input frequency of 40 to 500 Hz supported. Inputs are isolated from the power supply. Model Number Structure Model Number Legend K8AB- 123 4 1. Basic Model K8AB: Measuring and Monitoring Relays 2. Functions VS: Single-phase Voltage Relay (One-sided operation) 3. Measuring Current 1: 6 to 60 mV AC/DC, 10 to 100 mV AC/DC, 30 to 300 mV AC/DC 2: 1 to 10 V AC/DC, 3 to 30 V AC/DC, 15 to 150 V AC/DC 3: 20 to 200 V AC/DC, 30 to 300 V AC/DC, 60 to 600 V AC/DC 4. Supply Voltage 24 VAC/DC: 24 VAC/DC 100-115 VAC: 100 to 115 VAC 200-230 VAC: 200 to 230 VAC 1K8AB-VS Ordering Information List of Models Single-phase Voltage Relay Measuring voltage Supply voltage Model 24 VAC/DC K8AB-VS1 24 VAC/DC 6 to 60 mV AC/DC, 10 to 100 mV AC/DC, 100-115 K8AB-VS1 100-115 VAC 30 to 300 mV AC/DC 200-230 VAC K8AB-VS1 200-230 VAC 24 VAC/DC K8AB-VS2 24 VAC/DC 1 to 10 V AC/DC, 3 to 30 V AC/DC, 100-115 VAC K8AB-VS2 100-115 VAC 15 to 150 V AC/DC 200-230 VAC K8AB-VS2 200-230 VAC 24 VAC/DC K8AB-VS3 24 VAC/DC 20 to 200 V AC/DC, 30 to 300 V AC/DC, 100-115 VAC K8AB-VS3 100-115 VAC 60 to 600 V AC/DC 200-230 VAC K8AB-VS3 200-230 VAC Shunts (Order Separately) A shunt is a resistor to convert a DC current into a DC voltage. Use the shunt in combination with K8AB-VS to detect undercurrent and overcurrent in DC circuits. Model Rated current Output voltage SDV-SH5 5 A 60 mV 7.5 A SDV-SH7.5 7.5 A (for 100 mV) 100 mV Characteristics SDV-SH10 10 A SDV-SH5A (Rated Current: 5 A) SDV-SH15 15 A SDV-SH20 20 A SDV-SH30 30 A SDV-SH50 50 A Shunt rated at 60 mV SDV-SH75 75 A SDV-SH100 100 A 60 mV 60 SDV-SH150 150 A SDV-SH200 200 A SDV-SH300 300 A SDV-SH500 500 A SDV-SH750 750 A 5 Input current (A) SDV-SH1000 1,000 A Note: 1. All the above listed shunts have an accuracy in the 1.0 class. 2. Select a shunt whose rated current is more than 120% of the current normally flowing in a circuit. The characteristics of the shunt may change or fusing of a resistor element may occur if an overload that is 1,000% of the rated current is applied. Therefore, determine the rated current of the shunt to be used, by taking the circuit conditions into account. Ratings and Specifications Input Range Model Range * Connection terminal Measuring voltage Input impedance Overload capacity 0 to 60 mV AC/DC V1-COM Approx. 220 k 6 to 60 mV AC/DC, K8AB-VS1 0 to 100 mV AC/DC V2-COM 10 to 100 mV AC/DC, Approx. 230 k 30 to 300 mV AC/DC 0 to 300 mV AC/DC V3-COM Approx. 260 k 0 to 10 V AC/DC V1-COM Approx. 120 k Continuous input : 1 to 10 V AC/DC, 115% of maximum input K8AB-VS2 0 to 30 V AC/DC V2-COM 3 to 30 V AC/DC, Approx. 320 k 10 s max. : 15 to 150 V AC/DC 0 to 150 V AC/DC V3-COM Approx. 1.6 M 125% of maximum input 0 to 200 V AC/DC V1-COM Approx. 1.2 M 20 to 200 V AC/DC, K8AB-VS3 0 to 300 V AC/DC V2-COM 30 to 300 V AC/DC, Approx. 1.7 M 60 to 600 V AC/DC 0 to 600 V AC/DC V3-COM Approx. 3.1 M * The range is selected using connected terminals. 2 Output voltage (mV)