Operating the removable voltage transformers
110-0134.9 / 14 NXAIR / ≤ 40 kA 261
Mount the contact cap on the new protection fuse-link.
Insert the new protection fuse-link.
Perform replacement with all other fuse-links.
The protection fuse-links have been replaced.
Final procedure steps
Next, insert the removable voltage transformers into the panel. After
closing the high-voltage door, the panel can be integrated into the course
of operation again.
Procedure for design types 2, 3 and 4: Tool required
Hereafter, the procedure is shown using the example of a removable voltage transformer type 2. For design
types 3 and 4, the procedure is basically the same. Those types differ from type 2 only in that the contact
caps are interlocked with the housing by a screw thread. The contact caps are unscrewed by turning counter-
clockwise using the accessory tool:
Fig. 474: Tool for
(un-)locking
Fig. 475: Type 3: Unscrewing
the contact cap
Fig. 476: Type 4: Unscrewing
the contact cap
Move the service truck with the removable voltage transformers away from the panel.
The protection fuse-links are covered by contact caps which are interlocked by a guide pin
with the housing of the voltage transformer.
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