Phase switching unit (BKF-1) is designed for three-phase power line voltage control and for load switching in case of power supply voltage out of the established boundaries.
The device realizes:
- three-phase network voltage measuring;
- digital indication of every phase voltage;
- automatic load switching to another phase in case of power supply out of the established boundaries;
- possibility of manual shifting to another phase with control buttons;
- indication of the currently load connected phase;
- time delay while switching load to another phase;
- recording messages about load switching with phase number, phase voltage as well as switching time in DD/MM/YY HH/MM/SS in the internal archive.
The device can be connected to the computer with computer serial port RS-232 for:
- control of voltage values in all phases;
- manual shifting of load to another phase;
- records archive browsing;
- device internal non-volatile timer adjustment;
- operation voltage limits setting;
- time delay setting while switching to another phase.
The device is manufactured in self-extinguishing housing with fixing for DIN rail.
Typical connection diagram
Performance Specifications
| 1 |
Voltage measuring limits, V |
1 4 0…250 |
| 2 |
Voltage measurement error, V |
± 1 |
| 3 |
Set time for switching between phases, sec. |
0,01…2,5 |
| 4 |
Maximum number of records stored in the archive |
3760 |
| 5 |
ow to connect to a PC (laptop) |
COM порт ( RS -232) |
| 6 |
The maximum distance from the PC, m |
не более 30 |
| 7 |
Indication |
three 3-bit digital LED indicators; Three LEDs to display current connection. |
| 8 |
Keyboard |
3 buttons for load manual shifting |
| 9 |
Supply voltage |
~ 130V…260V, 50Hz |
| 10 |
Power supply consumption, VA |
not more than 5 |
| 11 |
Maximum switching current at U = 250V, A |
not more than 6 |
| 12 |
Operating conditions |
|
|
Air temperature ° С |
-10…+60 |
|
Relative humidity,%, not condensing |
0…90 |
| 13 |
Weight, kg |
not more than 0,8 |
Additional information
| 14 |
Warranty lifetime, years |
At least 10 |
| 15 |
Duration of warranty service, years |
2 |
Additional information |
