Prerequisite for selecting capacitor units is resonance calculation. If calculation reveals that with the introduction of PFC unit resonance will occur on any harmonic in the network, the PFC unit must be equipped with harmonic filters.
The need for higher harmonic filters in capacitor units is dictated by the nature of the consumers with which the capacitor unit is installed. If the PFC is installed where there is no non-linear load (motors equipped with soft starters, variable frequency drives, no welding machines, arc or induction melting furnaces), the harmonic filters are not required.
If there are consumers with non-linear load in the network, the capacitor unit has to be designed with harmonic filters.
Prerequisite for selecting capacitor units is resonance calculation. If calculation reveals that with the introduction of PFC unit resonance will occur on any harmonic in the network, the PFC unit must be equipped with harmonic filters.
Parameter Description |
Value |
1. Rated voltage |
6/10 kV |
2. Max. operating voltage |
6.3/10.5 kV |
3. Rated frequency |
50 Hz |
4. Capacitor Voltage |
6/6.3/10.5 kV |
5. Adjustment step |
75 kVAr-30 mVAr |
6. Filter Detuning |
5,67%-210 Hz |
7%-189 Hz |
|
14%-134 Hz |
|
7. Design Type |
Free Standing |
8. Connection |
Top / Bottom |
9. Degree of Protection |
IP31/IP41 |
10. Type: |
KRM (КРМ)/KRMF (КРМФ)/KRMT (КРМТ)/KRMFT (КРМФТ) |
11. Adjustment |
Manual / Automatic |
12. Dimensions |
|
Width |
400/600/800/1000 mm |
Depth |
600/800/1000 mm |
Height |
2000/2200 mm |