Robust and cost effective harmonic solution for the higher power range
The VLT®12-pulse drive is a high efficiency variable frequency drive which is built with the same modular design as the popular VLT® 6-pulse drives. It is offered with similar drive options and accessories and can be configured according to customer need.
The Danfoss VLT 12-Pulse Drive offers reduced harmonics for demanding industry applications above 250 kW.
The VLT 12-Pulse Drive is a high efficiency variable frequency converter which is built with the same modular design as the popular 6-pulse VLT drives. It is offered with similar drive options and accessories and can be configured according to customer need.
Together with the needed 30°-phase shifting transformer the solution provides durability and reliability at a low cost.
Under ideal grid conditions the solution eliminates the 5th, 7th, 17th and 19th harmonics and results in a THiD of around 12% at full load.
The needed transformer makes this solution ideal for applications where stepping down from medium voltage is required or where isolation from the grid is needed.
The Danfoss VLT 12-Pulse Drive provides harmonic reduction without adding capacitive or inductive components which often require network analysis to avoid potential system resonance problems.
250 kW – 1.4 MW (FC 302)
315 kW – 1.4 MW (FC 102/FC 202)
380 – 690 VAC 50-60 Hz
IP 21/NEMA Type 1
IP 54/NEMA Type 12
Harmonic mitigation performance:
True Power Factor:
PC Software & User Interface:
– Commissioning tool function
– Configuration and installation settings function
– User settings and information function
– Control panel function
– Data logger and event log function – Network monitoring and measurement function
– Filter load and status function
– Software update function
– UL-fi e. CE marking, cULus (UL508C) and c-tick (AS/NZS 2064)- IEEE519 / EN61000-3-xx harmonic mitigation guidelines
– IEEE587/ANSI C62.41/ EN61000-4-5surge immunity
– EN55011 electromagnetic compatibility
– EN50178, EN60146 safety/design
-10° C to +45° C, up to 3280 feet above sea level, with relative humidity of 5% – 85% RH, class 3K3 (functions to be maintained up to 95% RH not condensing)
Class A2 RFI; Class A1 RFI optional
Air cooled with primary cooling through back channel
The VLT 12-Pulse Drive is manufactured with respect for the environment and comply with the RoHS directive.