3 AC filter for feed in and regenerating recovery systems (active front)variable EMV categories to EN 61800-3

Problems with temperature rise, the scale or with common mode share of the whole filter system?

Our solution:
3AC filter Green Core for feed in and regenerating recovery systems
(active front – AFE)
variable EMV-categories to EN61800-3

• All-in-one-filter possible with X- und Y-capacitor
• Filter concepts to meet the requirements of C1 or C2

Advantages at a glance

• Longer working life of the motors and the spindle
• Low-noise inductance due to specific design
• Minimization of the voltage load on the motor winding
• All-in-one-filter reduces the customers internal wiring effort

Technical data:

• Rated current: up to 2500 A
• Power range: 10 kW – 1500 kW
• Cooling type: natural convection, forced cooling or liquid cooling

Optimized for you:

• Customised filter solutions for higher requirements according to EN61800-3 part 3
• Best support in the imporement of the components

UL-approval of regenerative 3-phase line filters on request.

LCL filters are used to connect AIC (active infeed converter) and AFE (active front end) drives to the mains.
Due to the increasing use of AFE / AIC, more LCL filters are needed. It can also be run as an LC filterThe LCL filters are also of interest for projects in the DC-AC product range, which feed electric energy from wind generators or PV inverters into the grid.Applications of regenerative AFE drives are lifts, cranes or similar transport systems, tools or other machines with many brake switching cycles and presses.

Assures through power and individuality

lighter, more efficient, reduced price

• high efficiency factor with standard materials:
  from 60kVA over 98,5%
  from 200kVA over 99,0%
• reduction of 45 % of the weight compare to standard transformers (lower freight costs)
• cost reduction because there is no extra copper addition
• power range to 2,5 MVA possible
• optimal use of the required materials
• available as autotransformers and isolating transformers
• several voltage level are available
• possible vector groups like Dyn5, Dyn11, YNyn0, Yd5, Dd0
• short-circuit voltage can be adjusted on demand
• class of protection: protective earthing or protective isolated
• degree of protection from IP00 to IP66 possible
• water cooled version
• a version with active air cooling is possible

The use of a filter circuit reactor of the Schmidbauer DFD series will result in the filter circuit reactors that are created in compensation systems. Used in reactive current compensation systems and form with the capacitors of the reactive current compensation system a series resonant circuit and allow the necessary reactive power.For frequently choosen chokes of 7%, the resonant frequency of the series resonant circuit formed by the filter circuit choke and the compensation capacitors is 189 Hz. With a throttling of 14% results in a resonance frequency of 134Hz.The filter circuit choke also protects the capacitors of the compensation system.The use of high-quality raw and insulating materials, in particular according to our UL insulation systems class B and F, as well as a careful processing “Made in Germany” guarantee a long service life. The DFD series is designed as an iron core choke to meet the increasing demands of inductive compensation or choked compensation stages. Iron core chokes by Schmidbauer with the Green Core principle with the aim of achieving very low total losses tailored to customer requirements.
Schmidbauer UR-Isolationssystem accord. UL 1446 File E181051

liquid cooled transformer as liquid cooled autotransformer or isolating transformer according IEC/DIN EN61558-2-13 and IEC/DIN EN61558-2-4

Liquid-cooled transformers of the Schmidbauer WKT series are excellently suited for water-cooled inverter technology. A potential-free water cooling simplifies water cooling in the entire system. The input voltage is 3x 400V at 50 / 60Hz and can be customized.The number of cooling circuits, the prescribed water inlet pressures and water temperatures depend on the mode of operation and the characteristics of the load.