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Phase-sequence Phase-loss Relay

 

K8AB-PH

Cat. No. N145-E1-01

Connections

Wiring Diagram

Phase Sequence and Phase Loss Operation Diagram

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.

Nomenclature

Front

Indicators

L1

L2

L3

L1

L3

L2

L3

L2

L1

L1

L2

L3

Relay

Phase Loss Operation

Phase Sequence Operation

Input

Load

Alarm

Input

Output

L1

L2

L3

L3

L2

L1

The power 
supply is 
shared with 
the rated in-
put voltage.

14

12

11

Power indicator

Relay status indicator

Item

Meaning

Power indicator (PWR: 
Green)

Lit when power is being supplied.

Relay status indicator (RY: 
Yellow)

Lit when relay is operating (normally lit).

Summary of Contents for K8AB-PH

Page 1: ...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 mm2 solid or 2 1 5 mm2 standard ferrules CE mark compliance certified by third party UL certification pending Model Number Structure Model Number Legend 1 Basic Model K8AB Measuring and Monitoring Relays 2 Functions PH Phase sequence Pha...

Page 2: ...500 VAC K8AB PH1 Rated input voltage Non isolated 200 to 500 VAC 15 VA Phase sequence phase loss operating time 0 1 s max value when rated operating voltage changes quickly from 0 to 100 Relays are normally ON and turn OFF for phase sequence or loss phase errors Resetting method Automatic reset Input frequency 45 to 65 Hz Input impedance 100 kΩ min Indicators Power PWR Green LED Relay output RY Ye...

Page 3: ...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 Case color Munsell 5Y8 1 ivory Case material ABS resin self extinguishing resin UL94 V0 Weight 200 g Mounting Mounted to DIN Track or via M4 screws Dimensions 22 5 W x 90 H x 100 D mm Installation environment Overvoltage Category...

Page 4: ...PH output relay is normally operative Nomenclature Front Indicators L1 L2 L3 L1 L3 L2 L3 L2 L1 L1 L2 L3 Relay Phase Loss Operation Phase Sequence Operation Input Load Alarm Input Output L1 L2 L3 L3 L2 L1 The power supply is shared with the rated in put voltage 14 12 11 Power indicator Relay status indicator Item Meaning Power indicator PWR Green Lit when power is being supplied Relay status indica...

Page 5: ...Cat No N145 E1 01 Phase sequence Phase loss Relay K8AB PH 5 Dimensions 22 5 5 90 100 5 K8AB PH ...

Page 6: ...he product 3 Do not use thinner or similar solvent for cleaning Use commercial alcohol 4 When discarding properly dispose of the product as industrial waste 5 Only use this product within a board whose structure allows no possibility for fire to escape About Installation 1 When wiring use only recommended crimp terminals 2 Do not block areas around the product for proper dissipation of heat If you...

Page 7: ...individual price of the product on which liability is asserted IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY REPAIR OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED STORED INSTALLED AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION ABUSE MISUSE OR INAPPROPRIATE MODIFICATION OR REPAIR Application Considerations SUITABILITY FOR USE O...

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