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K8AB-PW Schematic ( PDF Datasheet ) - Omron

Teilenummer K8AB-PW
Beschreibung Three-phase Voltage Relay
Hersteller Omron
Logo Omron Logo 




Gesamt 10 Seiten
K8AB-PW Datasheet, Funktion
Three-phase Voltage Relay
K8AB-PW
Ideal for monitoring 3-phase power supplies
for industrial facilities and equipment.
• Monitor overvoltages and undervoltages for three-phase 3-wire
or 4-wire power supplies.
DIP switch setting for 3-phase 3-wire or 3-phase 4-wire power
supply.
• Two SPDT output relays, 6 A at 250 VAC (resistive load).
Separate outputs possible for overvoltages and undervoltages.
• World-wide power specifications supported by one Unit
(switchable using DIP switch).
• Relay status can be monitored using LED indicator.
Refer to Safety Precautions for the K8AB
Series. Refer to page 9 for the Q&A section.
Model Number Structure
Model Number Legend
K8AB-@@
1 23
1. Basic Model
K8AB: Measuring and Monitoring Relays
2. Functions
PW: Three-phase Voltage Relay (Simultaneous upper and lower monitoring)
3. Rated Input Voltage
1: 115, 127, 133, 138, 200, 220, 230, 240 VAC
2: 220, 230, 240, 277, 380, 400, 415, 480 VAC
CSM_K8AB-PW_DS_E_2_1
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1






K8AB-PW Datasheet, Funktion
Nomenclature
Front
Terminal block
(See notes 1 and 2.)
Power indicator
Relay status indicator
Alarm indicator
Overvoltage knob (OVER)
Undervoltage knob (UNDER)
Operating time knob (T)
Terminal block
(See notes 1 and 2.)
K8AB-PW
Indicators
Item
Meaning
Power indicator
(PWR: Green)
Lit when power is being supplied (see note).
Relay status indicator
(RY: Yellow)
Lit when relay is operating (normally lit).
Alarm
indicator
(ALM:
Red)
Overvoltage:
Red
Lit when there is an overvoltage.
The indicator flashes to indicate the error status
after the overvoltage has exceeded the threshold
value while the operating time is being clocked.
Undervoltage: Lit when there is an undervoltage or phase loss.
Red The indicator flashes to indicate the error status
after the undervoltage has exceeded the threshold
value while the operating time is being clocked.
Note: The input across L1 and L2 is used for the internal power
supply. Therefore, the power indicator will not be lit if there is no
input across L1 and L2.
Setting Knobs
Item
Usage
Overvoltage knob (OVER) Can be set between 30% and 25% of the rated
input.
Undervoltage knob
(UNDER)
Can be set between 30% and 25% of the rated
input.
Operating time knob (T) Used to set the operating time to 0.1 to 30 s.
Note: 1. Use either a solid wire of 2.5 mm2 maximum or a ferrule with
insulating sleeve for the terminal connection.
The length of the exposed current-carrying part inserted
into the terminal must be 8 mm or less to maintain dielectric
strength after connection.
For 2.5 mm2 or
smaller solid wires
For ferrules with
insulating sleeves
8 mm max.
Recommended ferrules
Phoenix Contact
Al 1,5-8BK (for AWG16)
Al 1-8RD (for AWG18)
Al 0,75-8GY (for AWG18)
2. Tightening torque
Recommended: 0.49 N·m
Maximum:
0.54 N·m
8 mm max.
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