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K8DT-VW

Single-phase Overvoltage/Undervoltage Relay

K8DT-VW

Our Value Design Products Increase the Value of Your Control Panels. Detect abnormal voltages applies to equipment to protect against equipment failure. Monitor for overvoltages and undervoltages simultaneously with one Relay.

Input Range

Model Range * Connection terminal Setting range Input impedance Overload capacity
K8AK-VW2[][] 0 to 10 V AC/DC V1-COM 1 to 10 V AC/DC Approx. 120 kΩ Continuous input at 115% of
maximum input.
10 s at 125%
(up to 600 VAC)
0 to 30 V AC/DC V2-COM 3 to 30 V AC/DC Approx. 320 kΩ
0 to 150 V AC/DC V3-COM 15 to 150 V AC/DC Approx. 1.6 MΩ
K8AK-VW3[][] 0 to 200 V AC/DC V1-COM 20 to 200 V AC/DC Approx. 1.2 MΩ
0 to 300 V AC/DC V2-COM 30 to 300 V AC/DC Approx. 1.7 MΩ
0 to 600 V AC/DC V3-COM 60 to 600 V AC/DC Approx. 3.1 MΩ

* The range is selected using connected terminals.

Ratings

Power supply
voltage
K8DT-VW[][]D: 24 VAC 50/60 Hz, 24 VDC
K8DT-VW[][]A: 100 to 240 VAC 50/60 Hz
Power consumption 24 VAC/DC: 1.8 VA/1 W max.
100 to 240 VAC: 2.5 VA max.
Rated insulation
voltage
600 VAC
Operating value setting
range (AL1 and AL2)
10% to 100% of the maximum value of the setting range
K8DT-VW2: 1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
K8DT-VW3: 20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
Operating value 100% operation at set value
Reset value 5% of operating value (fixed)
Reset method Manual reset/automatic reset (switchable)
Manual reset: Turn OFF power supply for 1 s or longer.
Operating time
setting range (T)
0.1 to 30 s
Power ON lock time 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow,
Alarm output1 (AL1): Red,
Alarm output2 (AL2): Red
Input impedance Refer to Input Range on catalog.
Output form Relay Output: SPDT contact
Transistor Output: 1
Output relay ratings Rated load
5 A at 250 VAC (Resistive load)
5 A at 30 VDC (Resistive load)
1 A at 250 VAC (Inductive load)
0.2 A at 48 VDC (Inductive load)
Minimum load: 5 VDC, 10 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations
3 A at 250 VAC or 30 VDC: 100,000 operations
Transistor output
ratings
Rated voltage: 24 VDC (maximum voltage: 26.4 VDC)
Maximum current: 50 mA DC
Ambient operating
temperature
-20 to 60°C (with no condensation or icing)
Storage temperature -25 to 65°C (with no condensation or icing)
Ambient operating
humidity
25% to 85% RH (with no condensation)
Storage humidity 25% to 85% RH (with no condensation)
Altitude 2,000 m max.
Applicable wires Stranded wires, solid wires, or ferrules
Applicable wire size 0.25 to 1.5 mm2(AWG24 to AWG16)
Wire insertion force 8 N max. for AWG20 wire
Screwdriver
insertion force
15 N max.
Wire stripping length 8 mm
Ferrule length 8 mm
Recommended flat-blade screwdriver XW4Z-00B (Omron)
SZF 0.4 ×2.5 (Phoenix Contact)
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 (W×H×D)

Specifications

Allowable operating
voltage range
85% to 110% of rated power supply voltage
Allowable operating
frequency range
50/60 Hz ±5 Hz
Input frequency range 40 to 500 Hz
Overload capacity Continuous input at 115% of maximum input, 10 s at 125% (up to 600 VAC).
Repeat
accuracy
Operating
value
±0.5% full scale (at 25°C and 65% humidity, rated power supply voltage)
Operating
time
±50 ms (at 25°C and 65% humidity, rated power supply voltage)
Applicable
standards
Conforming
standards
EN 60947-5-1
Installation environment (pollution level 2, Overvoltage category III)
EMC EN 60947-5-1
Safety
standards
UL 60947-5-1 (Listing),
Korean Radio Waves Act (Act 10564), CCC (GB/T 14048.5)
Insulation resistance 20 MΩmin.
Between all external terminals and the case
Between all power supply terminals and all input terminals
Between all power supply terminals and all output terminals
Between all input terminals and all output terminals
Dielectric strength 2,000 VAC for 1 min
Between all external terminals and the case
Between all power supply terminals and all input terminals
Between all power supply terminals and all output terminals
Between all input terminals and all output terminals
Impulse withstand
voltage
6 kV (between live terminals and exposed, non-charged metal parts)
Noise immunity Square-wave noise of 1 μs/100-ns pulse width with 1-ns rise time
100 to 240 VAC: 1,500 V power supply terminal common/normal mode
24 VAC: 1,500 V power supply terminal common/normal mode
24 VDC: 480 V power supply terminal common
Vibration resistance Frequency: 10 to 55 Hz, 0.35-mm single amplitude
10 sweeps of 5 min each in X,Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along 3 axes
Degree of protection Terminals: IP20