Water-cooled frequency conversion speed regulating device (hereinafter referred to as frequency converter) adopts unique soft charging technology to precharge the power unit capacitor in the frequency converter by controlling the power supply and effectively eliminate the excitation inrush current. Does not affect the upper high voltage switchgear, does not affect the power unit in the DC capacitance, prolong the service life and reliability of the capacitor.
project | Parameter selection | |
input | Input voltage | 3、3.3、6、6.6、10KV(*) |
Allowable voltage fluctuation range | Operating at full load, voltage fluctuation ±10% | |
Frequency range | 50Hz±10% | |
Input current harmonics | ≤3%, in line with IEEE519-1992 and GB/T14549-93 standards | |
output | Output voltage range | 3、3.3、6、6.6、10KV(*) |
Maximum output capacity | 30000KVA | |
Machine efficiency power factor | Forced air cooling ≥0.965, water cooling frequency conversion ≥0.98 | |
Output frequency range | 0-50Hz(*) |
Double waterway parallel design
Reasonable waterway direction
High voltage power devices are used
Water connector on line plug
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