6
Single-phase Current Relay
K8AB-AS
Cat. No. N142-E1-02
Nomenclature
■
Front
Indicators
Setting Knobs
Note: 1.
Use either a solid wire of 2.5 mm
2
maximum or a ferrule with
insulating sleeve for the terminal connection.
The length of the exposed current-carrying part inserted
into the terminal must be 8 mm or less to maintain dielectric
strength after connection.
Recommended ferrules
Phoenix Contact
•
Al 1,5-8BK (for AWG16)
•
Al 1-8RD (for AWG18)
•
Al 0,75-8GY (for AWG18)
2.
Tightening torque
Recommended: 0.49 N·m
Maximum: 0.54 N·m
Power indicator
Relay status indicator
Current knob (SV)
Hysteresis knob (HYS.)
Operating time knob (T)
Startup lock time knob
(LOCK)
Alarm indicator
Terminal block
(See notes 1 and 2.)
Terminal block
(See notes 1 and 2.)
Item
Meaning
Power indicator
(PWR: Green)
Lit when power is being supplied.
Relay status indicator
(RY: Yellow)
Lit when relay is operating.
Alarm indicator (ALM: Red) Lit when there is an overcurrent or
undercurrent.
The indicator flashes to indicate the
error status after the input has
exceeded the threshold value while the
operating time is being clocked.
Item
Usage
Current knob (SV)
Used to set the current to 10% to 100%
of maximum measuring current.
Hysteresis knob (HYS.)
Used to set the rest value to 5% to 50%
of the operating value.
Operating time knob (T)
Used to set the operating time to 0.1 to
30 s.
Startup lock time knob
(LOCK)
Used to set the startup lock time to 0 to
30 s.
For 2.5 mm
2
or
smaller solid wires
For ferrules with
insulating sleeves
8 mm max.
8 mm max.