Description
The Mitsubishi D-AL-55K is an AC line reactor (input reactor) used in MDS-E / MDS-D CNC drive systems, installed on the AC input side of the converter (CV) unit.
It is a power-quality and protection component, not a motor or drive.
š§ Key Specifications (D-AL-55K)
| Specification | Value |
|---|---|
| Type | AC Line Reactor |
| Series | Mitsubishi CNC MDS systems |
| Rated Capacity | 55 kW |
| Rated Current | 200 A |
| Rated Voltage | 200ā240 V AC |
| Frequency | 50/60 Hz |
| Function | Harmonic suppression + inrush current limiting |
| Cooling Method | Natural air cooling |
| Installation | Series connection with CV unit input |
š Confirmed from Mitsubishi CNC specification tables, D-AL-55K is matched with MDS-E-CV-550 (55 kW converter unit) and is the largest standard reactor in this lineup.
āļø What it does
The D-AL-55K is installed in CNC cabinets to:
- Reduce harmonic distortion sent back to the power grid
- Limit inrush current when powering ON the CNC system
- Protect the CV (converter) unit from electrical stress
- Improve power factor and overall system stability
- Smooth incoming 3-phase AC supply
š Typical matching unit
- MDS-E-CV-550 (55 kW CNC converter unit)
š Features
- Passive coil design (very high reliability, no electronics)
- Improves CNC system power quality
- Reduces electrical noise (EMI)
- Extends converter unit lifespan
- Maintenance-free operation
š Applications
- CNC machining centers
- CNC turning machines
- Heavy industrial CNC systems
- Mitsubishi MELDAS drive cabinets (MDS-E series)