Omron K8AB-PA1 Manual
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Omron K8AB-PA1 Manual

Three-phase asymmetry and phase-sequence phase-loss relay
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Three-phase Asymmetry and Phase-sequence Phase-loss Relay
K8AB-PA
Ideal for 3-phase voltage asymmetry
monitoring for industrial facilities and
equipment.
• Monitor voltage asymmetry, phase sequence, and phase loss
for three-phase 3-wire or 4-wire power supplies with just one
Unit.
Switch setting for 3-phase 3-wire or 3-phase 4-wire power
supply.
• One SPDT output relay, 6 A at 250 VAC (resistive load).
• World-wide power specifications supported by one Unit
(switchable).
• Relay warning status easily monitoring using LED indicator.
• Easy wiring with ferrules
2 × 2.5 mm
solid or 2 × 1.5 mm
2
• CE mark compliance certified by third party.
UL certification.
Model Number Structure
Model Number Legend
K8AB-@@
1
2 3
1. Basic Model
K8AB: Measuring and Monitoring Relays
2. Functions
PA:
Three-phase Asymmetry and Phase-sequence Phase-loss Relay.
3. Rated Input Voltage
1:
AC 115, 127, 133, 138, 200, 220, 230, 240
2:
AC 220, 230, 240, 277, 380, 400, 415, 480
Three-phase Asymmetry and Phase-sequence Phase-loss Relay
2
standard ferrules.
www.samelectric.ru
K8AB-PA
J-43

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Summary of Contents for Omron K8AB-PA1

  • Page 1 Three-phase Asymmetry and Phase-sequence Phase-loss Relay K8AB-PA Ideal for 3-phase voltage asymmetry monitoring for industrial facilities and equipment. • Monitor voltage asymmetry, phase sequence, and phase loss for three-phase 3-wire or 4-wire power supplies with just one Unit. Switch setting for 3-phase 3-wire or 3-phase 4-wire power supply.

  • Page 2: Ordering Information

    Three-phase Asymmetry and Phase-sequence Rated input (See note 2.) Model Phase-loss Relay 3-phase 3-wire mode AC 200, 220, 230, 240 K8AB-PA1 3-phase 4-wire mode AC 115, 127, 133, 138 3-phase 3-wire mode AC 380, 400, 415, 480 K8AB-PA2 3-phase 4-wire mode AC 220, 230, 240, 277 Note: 1.

  • Page 3: Specifications

    Specifications −20 to 60°C (with no condensation or icing) Ambient operating temperature −40 to 70°C (with no condensation or icing) Storage temperature Ambient operating humidity 25% to 85% Storage humidity 25% to 85% Altitude 2,000 m max. Voltage fluctuation range 85% to 110% of rated input voltage Input frequency 50/60 Hz ±5 Hz (AC power supply)

  • Page 4: Wiring Diagram

    Connections Wiring Diagram Voltage Asymmetry and Phase Sequence/Phase Loss Operation Diagram N L1 L2 L3 Asymmetry operation voltage (set value) Input The power supply is Flashing shared with Alarm indicator the rated in- put voltage. Relay Input T: Operating time (0.1 to 30 s) T1: Power ON lock (1 s or 5 s) Phase loss operation Phase sequence operation...

  • Page 5: Dip Switch Functions

    3-phase 3-phase 3-wire 4-wire mode mode 200 VAC 115 VAC 127 VAC 220 VAC Rated input voltage switch (K8AB-PA1) 133 VAC 230 VAC 138 VAC 240 VAC 220 VAC 380 VAC 230 VAC 400 VAC Rated input voltage switch (K8AB-PA2)

  • Page 6: Safety Precautions

    Safety Precautions Precautions for Safe Use Precautions for Correct Use Make sure to follow the instructions below to ensure safety. For Proper Use 1. Do not use or keep this product in the following environments. • Outdoors, or places subject to direct sunlight or wearing 1.

  • Page 7: Model Number Structure

    Phase-sequence Phase-loss Relay K8AB-PH Ideal for phase sequence and phase loss monitoring for industrial facilities and equipment. • Simultaneously monitor phase sequence and phase loss for three-phase 3-wire power supplies. • One SPDT output relay, 6 A at 250 VAC (resistive load). •...
  • Page 8 Ordering Information List of Models Phase-sequence Phase-loss Relay Rated input voltage (See note.) Model 200 to 500 VAC K8AB-PH1 Note: The power supply is shared with the rated input voltage. Ratings and Specifications Ratings Rated input voltage Non-isolated 200 to 500 VAC (15 VA) Phase sequence, phase loss operating time 0.1 s max.
  • Page 9 Specifications −20 to 60°C (with no condensation or icing) Ambient operating temperature −40 to 70°C (with no condensation or icing) Storage temperature Ambient operating humidity 25% to 85% Storage humidity 25% to 85% Altitude 2,000 m max. Voltage fluctuation range 85% to 110% of rated input voltage Input frequency 50/60 Hz ±5 Hz (AC power supply)
  • Page 10 Connections Wiring Diagram Phase Sequence and Phase Loss Operation Diagram Phase Loss Operation Phase Sequence Operation The power Input supply is shared with the rated in- put voltage. Input Relay Note: 1. Motor load phase loss cannot be detected. To detect motor load phase loss, use the K8AB-PM or K8AB-PA.

  • Page 11: About Installation

    Safety Precautions Precautions for Safe Use Precautions for Correct Use Make sure to follow the instructions below to ensure safety. For Proper Use 1. Do not use or keep this product in the following environments. • Outdoors, or places subject to direct sunlight or wearing 1.
  • Page 12 Three-phase Phase-sequence Phase-loss Relay K8AB-PM Ideal for monitoring 3-phase power supplies for industrial facilities and equipment. • Monitor overvoltages, undervoltages, phase sequence, and phase loss for three-phase 3-wire or 4-wire power supplies with just one Unit. Switch setting for 3-phase 3-wire or 3-phase 4-wire power supply.
  • Page 13 Ordering Information List of Models 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...
  • Page 14 Specifications −20 to 60°C (with no condensation or icing) Ambient operating temperature −40 to 70°C (with no condensation or icing) Storage temperature Ambient operating humidity 25% to 85% Storage humidity 25% to 85% Altitude 2,000 m max. Voltage fluctuation range 85% to 110% of rated input voltage Input frequency 50/60 Hz ±5 Hz (AC power supply)
  • Page 15 Connections Wiring Diagram Overvoltage/Undervoltage and Phase Sequence/Phase Loss Operation Diagram Overvoltage N L1 L2 L3 setting value Hysteresis: Fixed at 5% Input Hysteresis: Fixed at 5% The power Undervoltage setting value supply is Flashing shared with Overvoltage alarm indicator the rated in- T: Operating time (0.1 to 30 s) put voltage.
  • Page 16 Function Selection DIP Switch DIP Switch DIP Switch Functions Function Default Power ON lock time OFF Monitoring mode 3-phase 3-wire selector power monitoring mode 3-phase 4-wire power monitoring mode Function Default 3-phase 3-phase 3-wire 4-wire mode mode 200 VAC 115 VAC 220 VAC 127 VAC Rated input voltage...
  • Page 17 Safety Precautions Precautions for Safe Use Precautions for Correct Use Make sure to follow the instructions below to ensure safety. For Proper Use 1. Do not use or keep this product in the following environments. • Outdoors, or places subject to direct sunlight or wearing 1.
  • Page 18 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. 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.
  • Page 19 Ordering Information List of Models Three-phase Voltage Relay Rated input (See note 2.) Model 3-phase 3-wire mode 200, 220, 230, 240 VAC K8AB-PW1 3-phase 4-wire mode 115, 127, 133, 138 VAC 3-phase 3-wire mode 380, 400, 415, 480 VAC K8AB-PW2 3-phase 4-wire mode 220, 230, 240, 277 VAC Note: 1.
  • Page 20 Specifications −20 to 60°C (with no condensation or icing) Ambient operating temperature −40 to 70°C (with no condensation or icing) Storage temperature Ambient operating humidity 25% to 85% Storage humidity 25% to 85% Altitude 2,000 m max. Voltage fluctuation range 85% to 110% of rated input voltage Input frequency 50/60 Hz ±5 Hz (AC power supply)
  • Page 21 Connections Wiring Diagram Overvoltage and Undervoltage Operation Diagram Overvoltage N L1 L2 L3 setting value Hysteresis: Fixed at 5% Input Hysteresis: Fixed at 5% The power Undervoltage setting value supply is Flashing shared with the rated in- Overvoltage alarm indicator put voltage.
  • Page 22 Bottom DIP Switch DIP Switch Functions Function Default Power ON lock time Monitoring mode 3-phase 3-wire selector power monitoring mode 3-phase 4-wire power monitoring mode Function Default 3-phase 3-phase SW3 SW4 3-wire 4-wire mode mode OFF Rated input 200 VAC 115 VAC OFF voltage switch 220 VAC 127 VAC (K8AB-PW1)
  • Page 23 Safety Precautions Precautions for Safe Use Precautions for Correct Use Make sure to follow the instructions below to ensure safety. For Proper Use 1. Do not use or keep this product in the following environments. • Outdoors, or places subject to direct sunlight or wearing 1.

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