JPS6016517U - Protection device against lightning surge for pole transformers - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

The drawings are a front view showing the main parts of a pole-mounted transformer equipped with a protection device that is an embodiment of the present invention, Figure 2 is an enlarged side view of the discharge fitting of the protection device of the present invention, and Figure 3 is an enlarged side view of the discharge fitting of the protection device of the present invention. FIG. 4 is an enlarged longitudinal sectional view of the current limiting element unit of the protection device, and a half sectional view of a leak stopper fixed in the middle of the lead wire. 1... Pole transformer, 2... Case,
3...Bushing, 4...Output conductor,
6... Insulated wire, 6a... Core wire, 7.
...Discharge fitting, 10... Current-limiting element unit, 11... Hanging fitting, 12... Current-limiting element, 13... Upper part Terminal, 14... Lower terminal, 15... Insulator, 16... Lead wire, 17... Mounting bracket, 17a...
・Mounting part, 18... Ground wire. Correction 1984. 1. 8. The scope of claims for utility model registration shall be amended as follows. O Scope of Utility Model Registration Request Between the core wire of the wire connected to the above-mentioned lead-out conductor and the outer circumferential surface of the insulated wire connected to the lead-out conductor of the bushing protruding from the case, and between the lead-out conductor of the bushing and the case. A current limiting element that has voltage non-linearity and has no follow current while tightening and fixing a discharge fitting that forms a discharge gap that is set to a discharge gap length that discharges in advance of a discharge starting voltage;
A current-limiting element unit consisting of upper and lower terminals connected to the upper and lower end faces of the element, and an insulator that integrally covers and molds a part of these upper and lower terminals and the outer peripheral surface of the element, is attached to the lower terminal. Directly attach and connect to the hanging bracket of the case that is already grounded via the connecting bracket, and connect one end to the upper terminal of the same unit. 5. Connect the insulated wire to the above discharge bracket. A protection device against lightning surges for pole-mounted transformers, characterized by: The brief description of the drawing has been amended as follows. On page 7, line 18 of the specification, "The drawing shows a protective device according to an embodiment of the present invention installed" has been changed to "The drawing shows an embodiment of the present invention, and Figure 1 shows a protective device according to the present invention installed.""Itwas," he corrected.

Claims (1)

[Scope of utility model registration request] A discharge occurs between the core wire of the wire connected to the outgoing conductor and the insulated outer surface of the insulated wire connected to the outgoing conductor of the bushing protruding from the case, prior to the discharge start voltage between the outgoing conductor of the bushing and the case. a current-limiting element that has voltage nonlinearity and has no follow-on current while tightening and fixing a discharge fitting that forms a discharge gap having a discharge gap length set to a length of the discharge gap;
A current-limiting element unit consisting of upper and lower terminals connected to the upper and lower end faces of the element, and an insulator that integrally covers and molds a part of these upper and lower terminals and the outer peripheral surface of the element, is attached to the lower terminal. Protection against lightning surges for a pole-mounted transformer, characterized in that a covered and insulated lead wire, which is directly connected to the mounting bracket to be connected and one end of which is connected to the upper terminal of the unit, is connected to the above-mentioned discharge fixture. Device.