Cat. No. N146-E1-02
Three-phase Phase-sequence Phase-loss Relay
K8AB-PM
7
l
Setting Method
1.
Overvoltage
The overvoltage knob (OVER) is used to set the overvoltage threshold.
The overvoltage can be set to between
−
30% and 25% of the rated input voltage.
Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the
same level.)
Use this as a guide to set the voltage.
The rated input depends on the model and DIP switch setting.
Example: K8AB-PM1 with Pin 2 Turned OFF (Three-phase, Three-wire Mode) and Pins 3 and 4 Turned OFF (Rated Voltage of 200 V)
The rated input voltage is 200 VAC and the setting range is 140 to 250 V.
2.
Undervoltage
Undervoltage is set using the undervoltage knob (UNDER).
The undervoltage can be set to between
−
30% and 25% of the rated input.
Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the
same level.)
Use this as a guide to set the voltage.
The rated input depends on the model and DIP switch setting.
Example: K8AB-PM1 with Pin 2 Turned OFF (Three-phase, Three-wire Mode) and Pins 3 and 4 Turned OFF (Rated Voltage of 200 V)
The rated input voltage is 200 VAC and the setting range is 140 to 250 V.
3.
Operating Time
The operating time is set using the operating time knob (T).
The operating time can be set to between 0.1 and 30 s.
Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the
same level.)
Use this as a guide to set the operating time.
If the input exceeds (or drops lower than) the voltage setting, the alarm indicator will start flashing for the set period and then stay lit.
Dimensions
(Unit: mm)
Three-phase Voltage with Phase-sequence, Phase-loss Relays
22.5
100
72
90
5
5
K8AB-PM1
K8AB-PM2
