Definitions Relating to Soft Starters and Motor Surge Protection: M

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MVS
Medium voltage soft starters offer integrated solutions for motor control and protection.
Mill, ball
A machine which grinds (or mixes) materials like ores, chemicals, ceramics and paints. Ball mills are cylindrical and rotate around a horizontal axis. The main chamber is partially filled with the material to be ground plus the grinding medium (usually stainless steel balls). When the cylinder rotates, a cascading effect reduces the material to a fine powder.
Mill, hammer
A machine used to crush material (usually soft material such as coal). Hammer mills consist of horizontal rotating disks with heavy metal bars attached to the edges by hinges. When the disks rotate, the bars repeatedly strike the material to be crushed. The raw material is contained within a cage, and falls through openings at the bottom when reduced to the required size.
Mill, roller
A type of intermediate crusher consisting of a pair of horizontal cylindrical rollers through which material is passed. The two rollers rotate in opposite directions, crushing material between them. A roller mill typically works on smaller, softer particles than a roller crusher.
Milliscreen
A machine which separates solids from slurry, using an inclined rotating drum with perforated sides.
Mixer
A machine which combines ingredients.

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