CN212968619U

CN212968619U - Novel transformer cabinet

Info

Publication number: CN212968619U
Application number: CN202021834549.8U
Authority: CN
Inventors: 周瑾; 吴国军; 殷俊秋; 凌湘
Original assignee: Jiangsu Huazhou Electric Co ltd
Current assignee: Jiangsu Huazhou Electric Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-13
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a novel transformer cabinet in the field of electrical cabinet manufacturing, which comprises a cabinet body, wherein the wire inlet end of the cabinet body is connected with a front low-voltage circuit breaker, the front low-voltage circuit breaker is connected with a main transformer, the main transformer is connected with a high-voltage current-limiting fuse, the high-voltage current-limiting fuse is connected with a high-voltage load switch, the high-voltage load switch is connected with a high-voltage wire outlet end, the front low-voltage circuit breaker is connected with an auxiliary transformer, the auxiliary transformer is connected with a rear low-voltage circuit breaker, the rear low-voltage circuit breaker is connected with a low-voltage bus, and the low-voltage bus is connected; can integrate high-voltage power transformation and low-voltage power transformation in a transformer cabinet, realize that the transformer cabinet can export high pressure one day and also can export the low pressure, the cost is reduced well to reduce occuping of space, the utility model discloses can be used to the distribution electricity of high-low pressure.

Description

Novel transformer cabinet

Technical Field

The utility model relates to an electrical cabinet.

Background

Need supply the distribution for various equipment in the room of joining in marriage, some equipment need high-voltage electricity, and some equipment need low-voltage electricity, can adopt the transformer cabinet to supply the distribution for the demand of difference usually, and the high-voltage transformer cabinet supplies power for high-tension apparatus, and the low-voltage transformer cabinet supplies power for low-voltage apparatus. However, for a small-sized factory, there are few devices, and at least one high-voltage transformer cabinet and one low-voltage transformer cabinet are required to be provided for the devices, which increases the cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel transformer cabinet can integrate high-pressure transformer and low pressure transformer in a transformer cabinet, realizes that one day transformer cabinet can export high pressure also can export the low pressure, the cost is reduced well to the occupation in space has been reduced.

For realizing the above-mentioned purpose, the utility model provides a novel transformer cabinet, the intelligent cabinet temperature adjusting device comprises a cabinet body, the inlet wire end of the cabinet body links to each other with preceding low-voltage circuit breaker, preceding low-voltage circuit breaker links to each other with main transformer, main transformer links to each other with high-pressure current-limiting fuse, high-pressure current-limiting fuse links to each other with high-pressure load switch, high-pressure load switch links to each other with the high-pressure leading-out terminal, preceding low-voltage circuit breaker links to each other with secondary transformer, secondary transformer links to each other with back low-voltage circuit breaker, back low-voltage circuit breaker links to each other with low-voltage bus.

Compared with the prior art, the utility model has the advantages that the incoming line end is connected with the front low-voltage circuit breaker and can be used as a master control, and then the incoming line end is divided into two paths through the front low-voltage circuit breaker, wherein one path is connected with the main transformer for high-voltage output, and the other path is connected with the negative transformer for low-voltage output, the high-voltage current-limiting fuse can provide overload and short-circuit protection for the transformer cabinet, and the temperature rise of the transformer cabinet can be lower, thereby effectively reducing the arc voltage; can integrate high-voltage power transformation and low-voltage power transformation in a transformer cabinet, realize that the transformer cabinet can export high pressure one day and also can export the low pressure, the cost is reduced well to reduce occuping of space, the utility model discloses can be used to the distribution electricity of high-low pressure.

As a further improvement, the high-voltage current-limiting fuse is a full-range fuse, so that the low overload current and the rated breaking current can be more reliably broken, and the protection circuit is better.

As the utility model discloses a further improvement, be provided with the zinc oxide arrester between high-voltage load switch and the high-pressure leading-out terminal, zinc oxide arrester ground connection sets up, because the zinc oxide arrester mainly comprises zinc oxide piezo-resistor, when thunderbolt, the high voltage of thunder wave makes piezo-resistor puncture, and the lightning current passes through piezo-resistor and flows into the ground, can be with the voltage control on the power cord in safety range to electrical equipment's safety has been protected.

As the utility model discloses a further improvement, still be provided with electrified display between high pressure load switch and the high-pressure leading-out terminal, whether can show electrical equipment very directly perceivedly like this has operating voltage, when equipment has operating voltage, this display window sends the flash of light, and warning people high-tension apparatus is electrified, then does not have the instruction when electroless, has improved the security performance of transformer cabinet.

As a further improvement of the present invention, the front low-voltage circuit breaker is connected to the secondary transformer through the low-voltage switch fuse set, so that the primary side of the secondary transformer is effectively protected when short circuit and overcurrent occur, and is prevented from being damaged.

As a further improvement, the primary side ground of the main transformer is provided, so that the ground capacitance current when the ground short circuit fault occurs can be reduced, and the power supply of the power distribution system is reliable.

Drawings

Fig. 1 is a circuit connection diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

a novel power transformation cabinet as shown in fig. 1, which comprises a cabinet body, wherein a wire inlet end of the cabinet body is connected with a front low-voltage circuit breaker, the front low-voltage circuit breaker is connected with a main transformer, the main transformer is connected with a high-voltage current-limiting fuse, the high-voltage current-limiting fuse is connected with a high-voltage load switch, the high-voltage load switch is connected with a high-voltage wire outlet end, the front low-voltage circuit breaker is connected with an auxiliary transformer, the auxiliary transformer is connected with a rear low-voltage circuit breaker, the rear low-voltage circuit breaker is connected with a low-voltage bus, and the low-; the high-voltage current-limiting fuse is a full-range fuse; a zinc oxide arrester is arranged between the high-voltage load switch and the high-voltage outlet end, and the zinc oxide arrester is grounded; an electrified display is also arranged between the high-voltage load switch and the high-voltage outlet end; the front low-voltage circuit breaker is connected with the auxiliary transformer through a low-voltage switch fuse set; the primary side of the main transformer is grounded.

In the utility model, the incoming line end is connected with the front low-voltage circuit breaker and can be used as a master control, and then the incoming line end is divided into two paths through the front low-voltage circuit breaker, one path is connected with the main transformer for high-voltage output, and the other path is connected with the negative transformer for low-voltage output; the primary side of the main transformer is grounded, so that the magnitude of capacitance-to-ground current when a ground short circuit fault occurs can be reduced, and the power supply reliability of a power distribution system is improved; the secondary side of the main transformer is connected with the high-voltage current-limiting full-range fuse, so that the temperature rise of the transformer cabinet is low, the arc voltage is effectively reduced, the low overload current is more reliably cut off to the rated cut-off current, and the electric circuit is better protected; when lightning strikes, the high voltage of lightning waves enables the piezoresistor of the zinc oxide arrester to break down, lightning current flows into the ground through the piezoresistor, and the voltage on a power line can be controlled within a safety range, so that the safety of electrical equipment is protected; the electrified display can show whether the electrical equipment has operating voltage very directly, when the equipment has operating voltage, the display window of the display emits flash light to warn people that the high-voltage equipment is electrified, and when the equipment does not have power, no indication is provided, so that the safety performance of the power transformation cabinet is improved.

The utility model discloses enough integrate high-voltage transformer and low-voltage transformer in a transformer cabinet, realize that the transformer cabinet can export high pressure also can export the low pressure one day, the cost is reduced well to the occupation in space has been reduced.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a novel transformer cabinet, includes the cabinet body, its characterized in that: the inlet wire end of the cabinet body links to each other with preceding low-voltage circuit breaker, preceding low-voltage circuit breaker links to each other with main transformer, main transformer links to each other with high-voltage current-limiting fuse, high-voltage current-limiting fuse links to each other with high-voltage load switch, high-voltage load switch links to each other with high-voltage leading-out terminal, preceding low-voltage circuit breaker links to each other with vice transformer, vice transformer links to each other with back low-voltage circuit breaker, back low-voltage circuit breaker links to each other with low-voltage generating line, low-voltage generating line links to each other.

2. A novel power transformation cabinet according to claim 1, characterized in that: the high-voltage current-limiting fuse is a full-range fuse.

3. A novel power transformation cabinet according to claim 2, characterized in that: and a zinc oxide arrester is arranged between the high-voltage load switch and the high-voltage outlet end, and the zinc oxide arrester is grounded.

4. A novel power transformation cabinet according to claim 3, characterized in that: and an electrified display is also arranged between the high-voltage load switch and the high-voltage outlet end.

5. A novel transformer cabinet according to claim 4, characterized in that: and the front low-voltage circuit breaker is connected with the auxiliary transformer through a low-voltage switch fuse set.

6. A novel transformer cabinet according to claim 5, characterized in that: the primary side of the main transformer is grounded.