The LGF Universe
ProductsOur innovative standard products are fully compatible with competitor offerings and correspond to the key national and international standards. UL and CSA approvals attest to their reliability. Efficient manufacturing processes and modular filter design not only facilitate flexibility and swift production, but also ensure market-aligned pricing.
The LGF Universe
ProductsOur innovative standard products are fully compatible with competitor offerings and correspond to the key national and international standards. UL and CSA approvals attest to their reliability. Efficient manufacturing processes and modular filter design not only facilitate flexibility and swift production, but also ensure market-aligned pricing.
The LGF Universe
ProductsOur innovative standard products are fully compatible with competitor offerings and correspond to the key national and international standards. UL and CSA approvals attest to their reliability. Efficient manufacturing processes and modular filter design not only facilitate flexibility and swift production, but also ensure market-aligned pricing.
Product overview
STANDARD FILTER 1- /3- / 4-phase
CUSTOMISED FILTERS 1- /3- / 4-phase
MOTORFILTER 3-phase
CURRENT-COMPENSATED CHOKES
LINEAR CHOKES, PFC CHOKES (POWER FACTOR CORRECTION CHOKE) AND STORAGE CHOKES
OTHER (INDUCTIVE) COMPONENTS, TRANSFORMERS, CURRENT TRANSFORMERS
CHOKES, LOW-NOISE – VOLUME-OPTIMISED – LOSS-REDUCED
TOROIDAL CORES, TOROIDAL TAPEWOUND CORES
SHELL CORES
CUT STRIP CORES / C-CORES
RM CORES, PQ CORES
EE- / EI-Cores
STANDARD FILTER 1- /3- / 4-phase
CURRENT-COMPENSATED CHOKES
TOROIDAL CORES, TOROIDAL TAPEWOUND CORES
MOTOR FILTER 3-phase
LINEAR CHOKES, PFC CHOKES (POWER FACTOR CORRECTION CHOKE) AND STORAGE CHOKES
SHELL CORES
CUSTOMISED FILTERS 1- /3- / 4-phase
OTHER (INDUCTIVE) COMPONENTS, TRANSFORMERS,
CURRENT TRANSFORMERS
CUT STRIP CORES / C-CORES
CHOKES, LOW-NOISE – VOLUME-OPTIMISED – LOSS-REDUCED
RM-Cores, PQ-Cores
EE- / EI-Cores
Filter range for 1-/ 3-/ 4-phase application
Line filter
Standard filter and motor filter
1-phase
3- / 4-phase
K-Series
3- / 4-phase
B- and E-Series
3-phase
Motor Chokes – Filter
Filter range is for single-phase applications with high insertion loss for AC and DC current. The filters boast exceptional symmetrical and asymmetrical insertion loss, making them particularly well-suited for use in drive technology and applications involving switch-mode power supplies.
Filter series are for a wide range of power electronics applications. Due to the high symmetrical and asymmetrical attenuation, these filters are particularly suitable for use with frequency converters in drive technology, power supplies and with switch-mode power supplies.
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Filter series are for a wide range of power electronics applications. Due to the high symmetrical and asymmetrical attenuation, these filters are particularly suitable for use with frequency converters in drive technology, in power supplies and with switch-mode power supplies.
Designed for applications with:
- Long shielded motor cables
- Motors with low impulse voltage strength
- Multiple motors connected in parallel
Key Features
- Extremely high symmetrical and asymmetrical attenuation
- Current range up to 36 Aeff
- Compact design
- Terminal block connection or Faston connector
Key Features
- Exceptionally high symmetrical and asymmetrical attenuation
- Rated voltage: 3 x 480 V
- Current range up to 3 x 180 Aeff
- Extremely compact design
- Touch-safe terminals
- UL 1283 certified (4-phase line filter – constructed according to UL 1283, but not certified)
Key Features
- Extremely high symmetrical and asymmetrical attenuation
- Rated voltage: 3 x 440 V or 3 x 480 V
- Current range up to 3 x 300 Aeff
- Low leakage current
- Compact design
- Touch-safe terminals
- UL 1283 certified (4-phase line filter – constructed according to UL 1283, but not certified)
Key Features
- Linear frequency response up to 200 kHz
- Rated voltage: 3 x 480 V
- Current range up to 150 Aeff
- Reduction of motor heating
- Reduction of motor noise
- Compact design
- Touch-safe terminals
- Conforms to UL 506
(MDR 3X25-26 is constructed according to UL 506, but not certified)
Line filter
Standard filter und Motor filter
1-phase
Filter range is for single-phase applications with high insertion loss for AC and DC current. The filters boast exceptional symmetrical and asymmetrical insertion loss, making them particularly well-suited for use in drive technology and applications involving switch-mode power supplies.
Key Features
- Extremely high symmetrical and asymmetrical attenuation
- Current range up to 36 Aeff
- Compact design
- Terminal block connection or Faston connector
3- / 4-phase
K-Series
Filter series are for a wide range of power electronics applications. Due to the high symmetrical and asymmetrical attenuation, these filters are particularly suitable for use with frequency converters in drive technology, power supplies and with switch-mode power supplies.
Key Features
- Exceptionally high symmetrical and asymmetrical attenuation
- Rated voltage: 3 x 480 V
- Current range up to 3 x 180 Aeff
- Extremely compact design
- Touch-safe terminals
- UL 1283 certified (4-phase line filter – constructed according to UL 1283, but not certified)
3- / 4-phase
B- and E-Series
Filter series are for a wide range of power electronics applications. Due to the high symmetrical and asymmetrical attenuation, these filters are particularly suitable for use with frequency converters in drive technology, in power supplies and with switch-mode power supplies.
Key Features
- Extremely high symmetrical and asymmetrical attenuation
- Rated voltage: 3 x 440 V or 3 x 480 V
- Current range up to 3 x 300 Aeff
- Low leakage current
- Compact design
- Touch-safe terminals
- UL 1283 certified (4-phase line filter – constructed according to UL 1283, but not certified)
3-phase
Motor Chokes – Filter
Designed for applications with:
- Long shielded motor cables
- Motors with low impulse voltage strength
- Multiple motors connected in parallel
Key Features
- Linear frequency response up to 200 kHz
- Rated voltage: 3 x 480 V
- Current range up to 150 Aeff
- Reduction of motor heating
- Reduction of motor noise
- Compact design
- Touch-safe terminals
- Conforms to UL 506
(MDR 3X25-26 is constructed according to UL 506, but not certified)
For electrical engineering applications
Inductive Components
Discover a comprehensive range of inductive components designed for various electrical engineering applications. From signal and drive transformers in the W-range to chokes and transformers in the kW-range.
Current compensated chokes
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Types
- Current compensated chokes (up to 600A)
Key Features
- Horizontal and vertical designs
- Suitable for PCB mounting
- Configured with lead-out cables according to customer requirements (ring cable lugs, pin cable lugs, and wire end sleeves)
- Wound with Cu-round wire, rectangular profile, or highfrequency (HF)-strand
- Low-loss with nanocrystalline cores
- Optimized control with amorphous cores
- Price-optimized based on application with powdered cores or ferrite cores
Linear chokes
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Types
- Storage Chokes/Linear Chokes (0.1 A to 300A)
- Commutation Chokes
- Motor Chokes
- Boost Chokes
Key Features
- Horizontal and vertical designs
- Suitable for PCB mounting
- Configured with lead-out cables according to customer preferences (ring cable lugs, pin cable lugs, and wire end sleeves)
- Wound with Cu round wire, rectangular profile, or highfrequency (HF)-strand
- Low-loss with nanocrystalline cores
- Optimized control with amorphous cores
- Price-optimized based on application with powdered cores
- Available with ring and cut cores, as well as shell cores
Other inductive components
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Current Transformers (50Hz – 500KHz)
Key features
- Horizontal and vertical designs
- Solid primary connection or through-hole design
- Available with SiFe, nickel-iron, ferrite and nanocrystalline cores
- For PCB mounting or lead-out wire ends
- Extremely flat designs
- Cost-optimized for use in energy meters
- Smallest design for high-resistance electronic termination
- Mountable on rails or cables
Voltage Transformers
Key features
- Horizontal and vertical designs
- Integrated resistor
- Available with SiFe, nickel-iron, ferrite and nanocrystalline cores
- Smallest design for high-resistance electronic termination
Chokes
low-noise, volume-optimized, and low-lossShow more
Types
- Storage chokes/linear chokes from 0.1A to 1000A, inductance from 1µH to 1mH
- PFC chokes from 0.1A to 100A, inductance from 50µH to 500µH with 0.05Vas…1/2LI²…2.0Vas
- 1- and 3-phase smoothing chokes
- Common mode chokes
- High-side and low-side chokes for step-up/step-down converters
Key features
- Volume-and power-optimized, low-noise design achieved through application-specific manufacturing and heat-treated core materials
- Half and open winding for enhanced forced cooling (Cu-round wire, Cu-strand, and HF- strand)
- Modular construction on a mounting plate or in a casting tray with connection terminals or prefabricated leads
- Encased in smooth aluminum tubing or cast housing with cooling fins
- Partial or full potting for mechanically and environmentally demanding applications with optimized heat dissipation
Application areas
- Medical technology
- Mobile applications
- Drive technology
- Battery buffer storage
- Solar and wind energy
- Charging stations
Current compensated chokes
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Types
- Current compensated chokes (up to 600A)
Key Features
- Horizontal and vertical designs
- Suitable for PCB mounting
- Configured with lead-out cables according to customer requirements (ring cable lugs, pin cable lugs, and wire end sleeves)
- Wound with Cu-round wire, rectangular profile, or highfrequency (HF)-strand
- Low-loss with nanocrystalline cores
- Optimized control with amorphous cores
- Price-optimized based on application with powdered cores or ferrite cores
Linear chokes
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Types
- Storage Chokes/Linear Chokes (0.1 A to 300A)
- Commutation Chokes
- Motor Chokes
- Boost Chokes
Key Features
- Horizontal and vertical designs
- Suitable for PCB mounting
- Configured with lead-out cables according to customer preferences (ring cable lugs, pin cable lugs, and wire end sleeves)
- Wound with Cu round wire, rectangular profile, or highfrequency (HF)-strand
- Low-loss with nanocrystalline cores
- Optimized control with amorphous cores
- Price-optimized based on application with powdered cores
- Available with ring and cut cores, as well as shell cores
Other inductive components
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Current Transformers (50Hz – 500KHz)
Key features
- Horizontal and vertical designs
- Solid primary connection or through-hole design
- Available with SiFe, nickel-iron, ferrite and nanocrystalline cores
- For PCB mounting or lead-out wire ends
- Extremely flat designs
- Cost-optimized for use in energy meters
- Smallest design for high-resistance electronic termination
- Mountable on rails or cables
Voltage Transformers
Key features
- Horizontal and vertical designs
- Integrated resistor
- Available with SiFe, nickel-iron, ferrite and nanocrystalline cores
- Smallest design for high-resistance electronic termination
Chokes
low-noise, volume-optimized, and low-loss
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Types
- Storage chokes/linear chokes from 0.1A to 1000A, inductance from 1µH to 1mH
- PFC chokes from 0.1A to 100A, inductance from 50µH to 500µH with 0.05Vas…1/2LI²…2.0Vas
- 1- and 3-phase smoothing chokes
- Common mode chokes
- High-side and low-side chokes for step-up/step-down converters
Key features
- Volume-and power-optimized, low-noise design achieved through application-specific manufacturing and heat-treated core materials
- Half and open winding for enhanced forced cooling (Cu-round wire, Cu-strand, and HF- strand)
- Modular construction on a mounting plate or in a casting tray with connection terminals or prefabricated leads
- Encased in smooth aluminum tubing or cast housing with cooling fins
- Partial or full potting for mechanically and environmentally demanding applications with optimized heat dissipation
Application areas
- Medical technology
- Mobile applications
- Drive technology
- Battery buffer storage
- Solar and wind energy
- Charging stations
Application-optimised selected
Soft magnetic cores
Cost-efficient base material
Ferrite cores
Key features
- Cost-efficient base material
- Simple shaping through pressing and subsequent sintering
- Tight tolerances achieved through grinding
- Oxide material, hence high resistance and low losses
- Good frequency response up to approx. 3 gigahertz
- Permeability µ = 1,000 to 15,000
- Small coercive field strengths
- Saturation induction Bs up to 0.5T RM, PQ, ETD, EI, UI cores
Core shapes
- Ring cores
- Shell cores
- RM-cores and shell cores
- RM-, PQ-, ETD-, EI-, UI-cores
- Cuboids and U-parts
The Ideal material for pre-magnetizable chokes production
Iron powder cores
Key features
- Cost-effective base material
- Simple shaping through pressing (with tight tolerances)
- Hole diameter 50 to 100 XX
- Minimal eddy current losses due to grain isolation & plastic binder
- High saturation induction up to 1.8T
- Permeability µ = 10 to 250
- Low stray losses due to the distributed air gap
- Good frequency response in kHz range
- The ideal material for the pre-magnetizable chokes production with HF overlay
Core shapes
- Ring cores
- Shell cores
- Toroids
- E- and EI-cores, blocks
- RM-cores
Low strip thicknesses and small coercive field strengths
Amorphous Cores
Key features
- Low strip thicknesses due to rapid solidification in the melt-spinning process
- Small coercive field strengths
- Permeability from µ 200 to 10,000
- High saturation induction Bs=1.5T
- Good frequency response in the kHz range
- Low costs for the iron-based variants
Core shapes
- Ring band cores
- Cut strip cores
High specific electrical resistance due to high silicon content.
Nanocrystalline cores
Key features
- Low strip thicknesses due to rapid solidification in the melt-spinning process
- High specific electrical resistance due to high silicon content and surface structures in Nm range
- Smallest coercive field strengths
- Wide permeability range from µ 200 to 100,000
- High saturation induction Bs=1.2T
- Virtually free from magnetostriction
- Excellent frequency response up to GHz-range
- Enables the production of components with minimal volume, low losses, and minimal noise
Core shapes
- Ring band cores
- Cut strip cores
- With diameters from ADu = 6.0mm to 400mm