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K8DT-VW

Features

Single-phase overvoltage/undervoltage relay

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 Technology that reduce wiring work
  • UL listed for easy shipping to North America
  • Double-insertion holes for crossover wiring (all terminals)
  • Models added with transistor outputs for superior contact reliability
  • RoHS compliant
Specifications & ordering info

Ordering information

Setting range

Power supply voltage

Output

Order code

1 to 10 V AC/DC

3 to 30 V AC/DC

15 to 150 V AC/DC

24 VAC/DC

Relay: SPDT contact output

K8DT-VW2CD

Transistor: Open collector

K8DT-VW2TD

100 to 240 VAC

Relay: SPDT contact output

K8DT-VW2CA

Transistor: Open collector

K8DT-VW2TA

20 to 200 V AC/DC

30 to 300 V AC/DC

60 to 600 V AC/DC

24 VAC/DC

Relay: SPDT contact output

K8DT-VW3CD

Transistor: Open collector

K8DT-VW3TD

100 to 240 VAC

Relay: SPDT contact output

K8DT-VW3CA

Transistor: Open collector

K8DT-VW3TA

Accessories

Front Cover (Order separately)

Appearance

Order code

 

Y92A-D1A

Specifications

Item

K8DT-VW2

K8DT-VW3

Power supply voltage

K8DT-VW__D

24 VAC 50/60 Hz, 24 VDC

K8DT-VA__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.

Operate (AL1, AL2)

Operating value setting range

10% to 100% of the maximum value of the setting range

1 to 10 VAC/DC

3 to 30 VAC/DC

15 to 150 VAC/DC

10% to 100% of the maximum value of the setting range

20 to 200 VAC/DC

30 to 300 VAC/DC

60 to 600 VAC/DC

Operating value

100% operation at set value

Reset (HYS)

Reset value

5% of operating value (fixed)

Resetting method

Manual reset/automatic reset (switchable)

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

Output form

Relay: SPDT contact output

Transistor: Open collector

Output relays ratings

Resistive load

5 A at 250 VAC

5 A at 30 VDC

Inductive load

1 A at 250 VAC

0.2 A at 48 VDC

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 operation

Transistor output ratings

Contact form

SPST-NO (Open collector)

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)

Case material

PC, UL 94 V-0

Weight

Approx. 100 g

Size in mm (H × W × D)

90×17.5×90

Operating voltage range

85% to 110% of power supply voltage

Rated power supply frequency

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 error

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 (GB14048.5)

Degree of protection

Terminals: IP20

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