Description
The Mitsubishi D-AL-18.5K is an AC line reactor (input reactor) used in MDS-E / MDS-D CNC drive systems, installed between the AC power supply and the CNC converter (CV) unit.
It is a protective electrical component, not a drive or motor.
š§ Key Specifications (D-AL-18.5K)
| Specification | Value |
|---|---|
| Type | AC Reactor (Line Reactor) |
| Series | Mitsubishi MDS CNC systems |
| Rated Capacity | 18.5 kW |
| Rated Current | ~66 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 Mitsubishi documentation confirms D-AL-18.5K is the 18.5 kW class AC reactor used with MDS CNC converter systems, especially for CV power supply units.
āļø What it does
The D-AL-18.5K is installed in the CNC cabinet to:
- Reduce harmonic distortion sent back to the power grid
- Limit inrush current when CNC system powers ON
- Protect the CV (converter) unit from electrical stress
- Improve power factor and system stability
- Smooth incoming 3-phase AC supply
š Typical matching unit
Used with CNC power supply units such as:
- MDS-E-CV-185 (18.5 kW class)
š Features
- Passive coil-based design (very reliable)
- Improves CNC system power quality
- Reduces electrical noise and EMI
- Protects converter (CV) unit lifespan
- Maintenance-free operation
š Applications
- CNC machining centers
- CNC turning machines
- Mitsubishi MELDAS drive cabinets
- Servo + spindle CNC systems (MDS series)