In three phase systems, it measures
RMS values of AC voltages and system
frequency sensitively. Using up direction
button (Select) phase-neutral voltages and
phase-phase voltages monitor sequentially
ke-FKR4(D) has many features.
Those are:
- Phase Failure
- Phase Sequence
- Over Voltage Protection
- Under Voltage Protection
- Voltage Unbalance (asymmetry)
Protection
- Over Frequency Protection
- Under Frequency Protection
- Power Supply:220 V AC
- Max contact current:5 A
- Over voltage protection:390 ~ 460 V AC
- Under voltage protection:300 ~ 370 V AC
- Phase sequence:Yes
- Phase assymetry:Yes
- Frequensy monitoring:Yes
- Phase loss:Yes
- Delay:0.01 ~ 99.9 min
- Output:1 C / O
- Dimension (mm):53 x 90 x 58
- Package:1
- Type:Ke - FKR4 (D)