4
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).
