The water-cooled variable frequency speed control device (hereinafter referred to as the inverter) adopts a unique soft charging technology, which precharges the power unit capacitor in the inverter by controlling the power supply, effectively eliminating the excitation inrush current. It does not affect the superior high-voltage switchgear, does not affect the DC capacitor in the power unit, and prolongs 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 | Full load operation, voltage fluctuation ± 10% | |
| Frequency range | 50Hz±10% | |
| Input current harmonic | ≤ 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 | |
| Overall 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
Using high voltage power devices
Online plug and unplug of waterway connector
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