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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).
• 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 pending.
Model Number Structure
■ Model Number Legend
K8AB-@@
1
2 3
1. Basic Model
K8AB: Measuring and Monitoring Relays
2. Functions
PH:
Phase-sequence Phase-loss Relay
3. Rated Input Voltage
1:
200 to 500 VAC
Cat. No. N145-E1-01
2
standard ferrules.
Phase-sequence Phase-loss Relay
K8AB-PH
1
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Table of Contents
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Summary of Contents for Omron K8AB-PH
- Page 1 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).
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Page 2: Ordering Information
Input frequency 45 to 65 Hz Input impedance 100 kΩ min. Indicators Power (PWR): Green LED, Relay output (RY): Yellow LED Output relays One SPDT relay (6 A at 250 VAC, resistive load) K8AB-PH Phase-sequence Phase-loss Relay Cat. No. N145-E1-01... - Page 3 2 kV with ground (power line) Conducted RF EN61000-4-6: 3 V (0.15 to 80 MHz) Power frequency magnetic field immunity EN61000-4-8: 30 A/m Voltage dip/short interruptions EN61000-4-11: 0.5 cycle, 0.180° each, polarity 100% (rated voltage) K8AB-PH Cat. No. N145-E1-01 Phase-sequence Phase-loss Relay...
- Page 4 Input Relay Note: 1. Motor load phase loss cannot be detected. To detect motor load phase loss, use the K8AB-PM or K8AB-PA. 2. The K8AB-PH output relay is normally operative. Output Alarm Load Nomenclature ■ Front...
- Page 5 Dimensions K8AB-PH 22.5 K8AB-PH Cat. No. N145-E1-01 Phase-sequence Phase-loss Relay...
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Page 6: Safety Precautions
5. Using this product for thyristor controls or inverters will result in errors. 6. When setting the volume, adjust the control from the minimum side to the maximum side. K8AB-PH Phase-sequence Phase-loss Relay Cat. No. N145-E1-01... -
Page 7: Warranty And Application Considerations
Warranty and Limitations of Liability WARRANTY OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS.
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