Single-phase Overcurrent/Undercurrent Relay
last update: March 1, 2019
Model | Range *1 | Connection terminal | Setting range | Input impedance | Input type | Overload capacity |
---|---|---|---|---|---|---|
K8DT-AW1[][] | 20 mA AC/DC | I1-COM | 2 to 20 mA AC/DC | Approx. 5 Ω | Direct input | Continuous input at
120% of maximum input. 1 s at 150% |
100 mA AC/DC | I2-COM | 10 to 100 mA AC/DC | Approx. 1 Ω | |||
500 mA AC/DC | I3-COM | 50 to 500 mA AC/DC | Approx. 0.2 Ω | |||
K8DT-AW2[][] | 1 A AC/DC | I1-COM | 0.1 to 1 A AC/DC | Approx. 0.12 Ω
(Load: 0.5 VA) |
Direct input or
commercially available CT |
|
5 A AC/DC | I2-COM | 0.5 to 5 A AC/DC | Approx. 0.02 Ω
(Load: 1.5 VA) |
|||
K8DT-AW3[][] | 100 A AC | I2-COM | 10 to 100 A AC *2 | --- | OMRON CT | Continuous input at 120% with an
OMRON CT (K8AC-CT200L). 30 s at 200% 1 s at 600% * CT capacity on primary side. |
200 A AC | I3-COM | 20 to 200 A AC *2 | --- |
*1. The range is selected using connected terminals.
*2. The K8DT-AW3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.)
Power supply voltage | K8DT-AW[][]D: 24 VAC 50/60Hz, 24 VDC
K8DT-AW[][]A: 100 to 240 VAC 50/60Hz |
---|---|
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, AL2) |
10% to 100% of the maximum value of the setting range
K8DT-AW1: 2 to 20 mA AC/DC 10 to 100 mA AC/DC 50 to 500 mA AC/DC K8DT-AW2: 0.1 to 1 A AC/DC (Compatible with commercially available CTs.) 0.5 to 5 A AC/DC (Compatible with commercially available CTs.) K8DT-AW3: When used with the OMRON CT (K8AC-CT200L). 10 to 100 A AC 20 to 200 A AC |
Operating value | 100% operation at set value |
Reset value | 5% of operating value (fixed) |
Reset method | Manual reset/automatic reset (switchable)
Note:Manual reset: Turn OFF power supply for 1 s or longer. |
Operating time setting
range (T) |
0.1 to 30 s |
Startup lock time
setting range (LOCK) |
0 to 30 s
(The startup lock timer starts when the input has reached approximately 30% or more of the set value.) Note:Enabled only for overcurrent operation. |
Indicators | Power (PWR): Green, Output (OUT): Yellow,
Alarm output 1 (ALM1): Red, Alarm output 2 (ALM2): Red |
Input impedance | Refer to Input Range on catalog. |
Output form | Relay Output: SPDT contact
Transistor Output: 1 |
Output relay ratings | Rated load:
250 VAC 5 A or 30 VDC 5 A (resistive load), 250 VAC 1 A (inductive load), 48 VDC 0.2 A (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) |
Allowable operating
voltage range |
85% to 110% of power supply voltage | |
---|---|---|
Allowable operating
frequency range |
50/60 Hz ±5 Hz | |
Input frequency range | K8DT-AW1 and K8DT-AW2: DC input or AC input (45 to 65 Hz)
K8DT-AW3: AC input (45 to 65 Hz) |
|
Overload capacity | K8DT-AW1 and K8DT-AW2: Continuous input at 120% of maximum
input, 1 s at 150% K8DT-AW3: Continuous input at 120%, 30 s at 200%, and 1 s at 600% with an OMRON CT (K8AC-CT200L). Note:CT capacity on primary side. |
|
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 external terminals and case Between power supply terminals and input terminals Between power supply terminals and output terminals Between input terminals and output terminals |
|
Dielectric strength | 2,000 VAC for one minute
Between external terminals and case Between power supply terminals and input terminals Between power supply terminals and output terminals Between input terminals and 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 |
* K8DT-AW[]TD is not applied.
last update: March 1, 2019