Series
R3L — Three-Phase Smoothing Reactors
DC-link / line smoothing reactors for VFDs — motor side (dV 2%) & grid side (dV 4%), 400 V
Three-phase smoothing (choke) reactors that limit di/dt, ripple current, and voltage notching on variable-frequency drives. R3L/M motor-side reactors (voltage drop dV 2%) protect the motor and reduce dv/dt stress; R3L/R grid-side reactors (dV 4%) reduce harmonic distortion drawn from the supply and protect the drive front end. Rated from 15 to 500 A at 400 V 50 Hz with Isat = 1.5 x In; copper windings on the lower ratings, aluminium on the larger ones.
Key Features
- ▸Line and DC-link smoothing reactors for VFDs
- ▸Motor side dV 2% (R3L/M) and grid side dV 4% (R3L/R)
- ▸Saturation current Isat = 1.5 x In (2x / 3x available on request)
- ▸Reduces ripple, di/dt, and supply harmonic distortion
- ▸Copper / aluminium windings
Mounting
Floor / panel mount
METH Catalogue
Dimensions & data chart
Full dimensional drawing, code matrix, and electrical data (losses, efficiency, Ucc, inrush) for this series in the METH Transformer Catalogue — page 27.
View dimensional drawing & data chart (METH Catalogue p. 27) →Technical Data
Specifications
Inches shown as primary unit, mm as secondary where applicable. Custom voltages and ratings available — contact us for engineered configurations.
| Model | VA / kVA | Primary Voltage | Secondary Voltage | Certifications |
|---|---|---|---|---|
| R3L/M - MOTOR SIDE / dV 2% / Isat = 1.5 In / 400 V 50 Hz | ||||
| R3L/15-M | 15 A | 400 V | 0.981 mH | CE · IEC 60076-6 |
| R3L/20-M | 20 A | 400 V | 0.735 mH | CE · IEC 60076-6 |
| R3L/30-M | 30 A | 400 V | 0.49 mH | CE · IEC 60076-6 |
| R3L/50-M | 50 A | 400 V | 0.294 mH | CE · IEC 60076-6 |
| R3L/75-M | 75 A | 400 V | 0.196 mH | CE · IEC 60076-6 |
| R3L/100-M | 100 A | 400 V | 0.147 mH | CE · IEC 60076-6 |
| R3L/125-M | 125 A | 400 V | 0.118 mH | CE · IEC 60076-6 |
| R3L/150-M | 150 A | 400 V | 0.098 mH | CE · IEC 60076-6 |
| R3L/200-M | 200 A | 400 V | 0.074 mH | CE · IEC 60076-6 |
| R3L/250-M | 250 A | 400 V | 0.059 mH | CE · IEC 60076-6 |
| R3L/300-M | 300 A | 400 V | 0.049 mH | CE · IEC 60076-6 |
| R3L/350-M | 350 A | 400 V | 0.042 mH | CE · IEC 60076-6 |
| R3L/400-M | 400 A | 400 V | 0.037 mH | CE · IEC 60076-6 |
| R3L/500-M | 500 A | 400 V | 0.029 mH | CE · IEC 60076-6 |
| R3L/R - GRID SIDE / dV 4% / Isat = 1.5 In / 400 V 50 Hz | ||||
| R3L/15-R | 15 A | 400 V | 1.961 mH | CE · IEC 60076-6 |
| R3L/20-R | 20 A | 400 V | 1.471 mH | CE · IEC 60076-6 |
| R3L/30-R | 30 A | 400 V | 0.981 mH | CE · IEC 60076-6 |
| R3L/50-R | 50 A | 400 V | 0.588 mH | CE · IEC 60076-6 |
| R3L/75-R | 75 A | 400 V | 0.392 mH | CE · IEC 60076-6 |
| R3L/100-R | 100 A | 400 V | 0.294 mH | CE · IEC 60076-6 |
| R3L/125-R | 125 A | 400 V | 0.235 mH | CE · IEC 60076-6 |
| R3L/150-R | 150 A | 400 V | 0.196 mH | CE · IEC 60076-6 |
| R3L/200-R | 200 A | 400 V | 0.147 mH | CE · IEC 60076-6 |
| R3L/250-R | 250 A | 400 V | 0.118 mH | CE · IEC 60076-6 |
| R3L/300-R | 300 A | 400 V | 0.098 mH | CE · IEC 60076-6 |
| R3L/350-R | 350 A | 400 V | 0.084 mH | CE · IEC 60076-6 |
| R3L/400-R | 400 A | 400 V | 0.074 mH | CE · IEC 60076-6 |
| R3L/500-R | 500 A | 400 V | 0.059 mH | CE · IEC 60076-6 |
Reactors with Isat = 2 x In or 3 x In are also available on request. Available from our Italian warehouse; lead times and pricing on request.
Use Cases
Typical Applications
VFD line reactors
Grid-side reactors that cut harmonic distortion and protect drive input rectifiers.
Motor-side reactors
Limit dv/dt and reflected-wave stress on long motor cables.
DC-link smoothing
Reduce DC-bus ripple current in variable-frequency drives.
Power quality
Improve power quality on networks with many non-linear loads.
Get a Quote
Request a Quote — R3L
Contact us for pricing, lead times, and application engineering. Full certification documentation provided with every order.