Omron K8AB-PA1, Manual

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J-36
Three-phase Phase-sequence Phase-loss Relay
K8AB-PM
Ordering Information
■
List of Models
Note: 1. Three-phase 3-wire or 4-wire and the input range are switched using a switch.
2. The power supply is shared with the rated input voltage.
Ratings and Specifications
■
Ratings
Three-phase Phase-sequence Phase-loss Relay Rated input (See note 2.) Model
3-phase 3-wire mode 200, 220, 230, 240 VAC K8AB-PM1
3-phase 4-wire mode 115, 127, 133, 138 VAC
3-phase 3-wire mode 380, 400, 415, 480 VAC K8AB-PM2
3-phase 4-wire mode 220, 230, 240, 277 VAC
Rated input
voltage K8AB-PM1 Three-phase, three-wire mode: 200, 220, 230, 240 VAC
Three-phase, four-wire mode: 115, 127, 133, 138 VAC
K8AB-PM2 Three-phase, three-wire mode: 380, 400, 415, 480 VAC
Three-phase, four-wire mode: 220, 230, 240, 277 VAC
Operation
(overvoltage or
undervoltage) Operating value setting
range Overvoltage =
−
30% to 25% of maximum rated input voltage
Undervoltage =
−
30% to 25% of maximum rated input voltage
Note: The rated input voltage is switched with a switch.
Operating value 100% operation at set value
Reset (HYS.) Hysteresis 5% of operating value (fixed)
Resetting method Automatic reset
Operating time
(T) Overvoltage/undervoltage 0.1 to 30 s (Value when input rapidly changes from 0% to 120%.)
Phase sequence, phase loss 0.1 max. (Value when input rapidly changes from 0% to 100%.)
Power ON lock (LOCK) 1 s or 5 s error
±
0.5 s (Value when input rapidly changes from 0% to 100%. The operating time
is the shortest at this point.)
Setting accuracy ±10% of full scale
Time error ±10% of set value (Minimum error: 50 ms)
Input frequency 45 to 65 Hz
Input impedance 100 k
Ω
min.
Indicators Power (PWR): Green LED, Relay output (RY): Yellow LED, Alarm outputs (ALM1/2): Red LED
Output relays Two SPDT relays (6 A at 250 VAC, resistive load), Normally closed operation (normally ON)
(separate outputs possible for overvoltages and undervoltages)