The disconnector of the internal installation with the grounding knife RVZ 10/400-U3 I, II, III is designed for repeated switching and switching without load of sections of three-phase current circuits with a voltage of 6 (10) kV, frequency of 50 Hz. RVZ 10/400-U3 is installed in complete transformer substations (CTS), one-way service chambers (OWSC), and complete distribution devices (CDD).
High-voltage AC disconnectors of RVZ 10/400-U3 are designed to:
The disconnectors are installed in AC networks at frequencies of 50 and 60 Hz at a voltage of 6(10) kV.
The disconnector of the series RVZ 10/400-U3 I, II, III execution is a three-pole switching apparatus of vertical-rubbing type and consists of:
Fixed contacts (a detachable connection and an indivisible hinged connection) made from a copper tyre are mounted on insulators mounted on a disconnection frame. A drive shaft, a grounding knife and other disconnecting elements are also mounted on the frame.
The movable contact knives are connected to fixed contacts via a hinged joint.
The necessary contact force in the hinged and detachable contact connection is achieved by means of the springs installed.
The movable contact knives are actuated by a drive shaft mounted on the disconnect frame via levers and traction insulators.
The external cables are fastened by means of bolt connections to fixed contacts.
The grounding knife is fastened to the disconnect frame by a bolted connection. The disconnector structure allows the customer to remove or add grounding knives on his own. Also the Customer can separately complete the divider RVZ 10/400-Y3 I, II, III execution one or two grounding knives.
The disconnection and disconnection of the disconnector and the ground knives shall be effected by a manual drive of type MD-10.
In the manual lever drive MD-10, it is possible to fix it in the set-up and disconnected position.
A 31M or 32M mechanical lock or 3B-1 electromagnetic lock are used to lock the drive.RVZ 10/400-U3 symbols: