| 摘要 |
An oil-filled distribution transformer having a primary disconnect switch disposed within the housing and utilizing two movable bridging contacts and four stationary contacts for completing a series circuit therethrough. The switch includes a trip mechanism, a bimetal element isolated from the current path through the switch and responsive to the temperature of the oil to activate the trip mechanism upon overtemperature condition, and a float mechanism attached to the switch and cooperating with the trip mechanism so that the float assembly will activate the trip mechanism when the oil level within the housing drops below a predetermined value.
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