essary with high voltages ofsupply, rotary breaks are more widely employed. Mercury is usedin most of them, but not in all. In all motor-driven interrupters the break should take placebeneath an insulating liquid, such as alcohol or paraffin oil. Aftera time these liquids become dirty, owing to the… … Mackenzie Davidson Interrupter (Cox). because the use of paraffin oil renders the cleaning process extremelyunpleasant. Among the rotary breaks with mercury the Mackenzie Davidsonbreak and the turbine break are the most widely used. The former consists of an inclined metal axle with one or…
X-rays · Radiography
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