Complete set of disconnect switch consists of FW4-252(D)(W) type disconnect switch body,CJ6 type electric mechanism, drive accessory and other parts,earth swtich equiped with CS9 manual mechnism.
Disconnect switch is double-column horizontal-open type. Each single stage consists of base , support insulator, outlet base, contact and other parts. The two support indulators are placed on bearing housing at both ends of the base parallel to to ech other and verical with the base. Main conduction parts are respectively installed on top of both two support insulators rotating around 90° with support insulators.
Each bearing housing of disconnect switch is designed to full-sealed structure which can prevant jamming phenomenon caused by dust,moist air,harmful gas entering into interior of the bearing housing. Interior of bearing housing is equiped with thrust ball bearing and annular ball bearing which make gravity and horizontal component of the disconnect switch respectively beared by the two special bearing so that operating torque will not increase after long time operation of disconnect switch.
Red copper braid of outlet base will be seperately fastened on conducting rod and terminal plate for lines connections of users.
Contact fingers of middle contact parts are assembled in pairs. Using spring to make contact fingers to clamp contact finger base to contact in order to achieve the purpose of contact conductance. The form is roll-in form in order to reduce wear and tear between contact and contact fingers when opening and closing brake and increase long service life.
When disconnect switch equiped with earth swtich, the intelock of main galvanic circle and earth switch is ensured by sector plate and arc plate on the base. When main galvanic circle close brake,the earth switch is not allowed to close. When earth switch close, main galvanic circle is not allowed to close.
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