A transformer

By designing a combination structure of protective cover and contact plate on the transformer, real-time monitoring and reliable protection of the tap changer are achieved, solving the risk of accidental contact caused by the mechanical protective structure not being locked, and ensuring operational safety.

CN224519625UActive Publication Date: 2026-07-17CHINT ELECTRIC

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINT ELECTRIC
Filing Date
2025-08-14
Publication Date
2026-07-17

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Abstract

The utility model belongs to transformer technical field discloses a kind of transformers, it includes box cover, protective cover, microswitch and touch pressure plate, box cover is equipped with voltage regulating tap changer, protective cover is located on box cover, microswitch includes body and contact on body, body is fixed in protective cover, contact protrudes from protective cover, the body of microswitch is connected with transformer protection control cabinet, touch pressure plate one end is detachably connected with protective cover, touch pressure plate other end is detachably connected with box cover, one end of touch pressure plate is connected with protective cover, the other end of touch pressure plate is connected with box cover, one end of touch pressure plate is pressed contact, and the other end of touch pressure plate locks voltage regulating tap changer. The transformer provided by the utility model can not only prevent false touch real-time monitoring for voltage regulating tap changer, but also reliably protect microswitch.
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Claims

1. A transformer, characterized in that, include: The box cover (1) is equipped with a pressure regulating tap switch; A protective cover (2) is provided on the box cover (1); The micro switch (3) includes a body (31) and a contact (32) disposed on the body (31). The body (31) is fixed inside the protective cover (2), and the contact (32) extends out of the protective cover (2). The body (31) is connected to the transformer protection control cabinet. A pressure plate (4) is provided, one end of which is detachably connected to the protective cover (2) and the other end of which is detachably connected to the box cover (1). One end of the pressure plate (4) is connected to the protective cover (2) and the other end of the pressure plate (4) is connected to the box cover (1). One end of the pressure plate (4) presses against the contact (32) and the other end of the pressure plate (4) locks the voltage regulating tap switch.

2. The transformer of claim 1, wherein The protective cover (2) is provided with a lock lug (12), and the touch plate (4) is provided with a lock hole (401). The lock lug (12) passes through the lock hole (401) and is fitted with a lock head (5). The lock head (5) is used to lock the touch plate (4) onto the protective cover (2). The lid (1) is provided with a lock lug (12), and the pressure plate (4) is provided with a lock hole (401). The lock lug (12) passes through the lock hole (401) and is fitted with a lock head (5). The lock head (5) is used to lock the pressure plate (4) onto the lid (1).

3. The transformer of claim 1, wherein, The box cover (1) is provided with a cover (11), which covers the pressure regulating tap switch. One end of the pressure plate (4) is connected to the protective cover (2), and the other end of the pressure plate (4) is connected to the cover (11), and the cover (11) is pressed against the box cover (1) to lock the pressure regulating tap switch.

4. The transformer of claim 1, wherein, The pressure plate (4) includes a first plate portion (41), a second plate portion (42), and a third plate portion (43) that are bent. The first plate portion (41) and the third plate portion (43) are arranged parallel to each other. The first plate portion (41) is detachably connected to the protective cover (2), and the third plate portion (43) is detachably connected to the box cover (1). The first plate portion (41) is connected to the protective cover (2), and the third plate portion (43) is connected to the box cover (1). The first plate portion (41) presses against the contact (32), and the third plate portion (43) locks the voltage regulating tap switch.

5. The transformer of claim 4, wherein, The outer edge of the first plate (41) is provided with a waterproof eave (44), and the protective cover (2) is located inside the waterproof eave (44).

6. The transformer of claim 1, wherein, The bottom end of the protective cover (2) is provided with a first support part (22), which is fixedly supported on the box cover (1).

7. The transformer of claim 6, wherein, The box cover (1) is provided with a first fixing post (13), and the first support part (22) is provided with a first mounting hole (221). The first fixing post (13) passes through the first mounting hole (221) and is connected to a first fastener (61). The first fastener (61) is used to press the first support part (22) against the box cover (1).

8. The transformer of claim 1, wherein, The protective cover (2) is provided with a bracket (23), and the main body (31) is fixedly mounted on the bracket (23).

9. The transformer of claim 8, wherein, The bracket (23) is bent and provided with a second support part (231). The inner wall of the protective cover (2) is provided with a second fixing post (24). The second support part (231) is provided with a second mounting hole (232). The second fixing post (24) passes through the second mounting hole (232) and is connected to a second fastener (62). The second fastener (62) is used to press the second support part (231) tightly against the inner wall of the protective cover (2).

10. The transformer of claim 1, wherein, The protective cover (2) has a first through hole (21) and a second through hole (25). The connecting cable (33) of the micro switch (3) passes through the first through hole (21) and connects to the transformer protection control cabinet. The contact (32) passes through the second through hole (25) and extends out of the protective cover (2).