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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 pending.
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
Cat. No. N147-E1-01
2
standard ferrules.
Three-phase Asymmetry and Phase-sequence Phase-loss Relay
K8AB-PA
1
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Related Manuals for Omron K8AB-PA
Summary of Contents for Omron K8AB-PA
- Page 1 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.
-
Page 2: Ordering Information
Phase sequence, phase loss 0.1 s max. (Value when input rapidly changes from 0% to 100%.) Power ON lock (LOCK) 1 s or 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... -
Page 3: Specifications
Insulation resistance 20 MΩ (at 500 V) between charged terminals and exposed uncharged parts 20 MΩ (at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals) Degree of protection Terminal section: IP20, Rear case: IP40... -
Page 4: Wiring Diagram
Operating time knob (T) being clocked. Setting Knobs Item Usage Asymmetry rate knob (SV) Used to set the asymmetry rate to 2% to 22%. Operating time knob (T) Used to set the operating time to 0.1 to 30 s. K8AB-PA Three-phase Asymmetry and Phase-sequence Phase-loss Relay Cat. -
Page 5: Dip Switch Functions
230 VAC 138 VAC 240 VAC 220 VAC 380 VAC 230 VAC 400 VAC Rated input voltage switch (K8AB-PA2) 240 VAC 415 VAC 277 VAC 480 VAC Dimensions K8AB-PA 22.5 K8AB-PA Cat. No. N147-E1-01 Three-phase Asymmetry and Phase-sequence Phase-loss Relay... -
Page 6: Safety Precautions
(If you do not secure space for heat dissipation, life cycle of 8. There is a remote risk of explosion. Do not use this product where the product will be compromised.) flammable or explosive gas exists. -
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.