CN219935896U

CN219935896U - Aging test electric cabinet of 350kW photovoltaic inverter

Info

Publication number: CN219935896U
Application number: CN202223559269.2U
Authority: CN
Inventors: 金水清; 许金海; 纪念
Original assignee: Guangdong Baosheng Electric Co ltd
Current assignee: Guangdong Baosheng Electric Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-10-31
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses an aging test electric cabinet of a 350kW photovoltaic inverter, which comprises a machine case and a transformer, wherein the transformer is positioned in the machine case, the transformer comprises an upper fixing clamp, a lower fixing clamp and a plurality of groups of loops, each group of loops is provided with an N-number wiring port, a 220V wiring port, a 400V wiring port, a 480V wiring port, a 540V wiring port, a 600V wiring port and a 800V wiring port, the loops are interlocked, the front end of the machine case is connected with an output wiring rod and an input switch, the rear end of the machine case is provided with a fan, the interior of the machine case is provided with a temperature monitoring module, and the temperature monitoring module is in signal connection with the fan. The aging test electric cabinet of the 350kW photovoltaic inverter is provided with a plurality of groups of loops, the loops are mutually in an interlocking relationship, and the safety of the whole test electric cabinet is improved under the condition of not affecting use.

Description

Aging test electric cabinet of 350kW photovoltaic inverter

Technical Field

The utility model relates to the technical field of power distribution cabinets, in particular to an aging test electric cabinet of a 350kW photovoltaic inverter.

Background

The power distribution cabinet is a generic name of a motor control center. The power distribution cabinet is used in the occasions with dispersed load and less loops; the motor control center is used for occasions with concentrated load and more loops. They distribute the power of a circuit of the upper-level distribution equipment to nearby loads. This class of equipment should provide protection, monitoring and control of the load. There are also multiunit return circuit in the conventional switch board, but influence each other between the return circuit, have the danger to can not the temperature of real-time supervision return circuit, can not carry out reasonable cooling.

Disclosure of Invention

One object of the present utility model is to: the utility model provides a 350kW photovoltaic inverter's ageing test electric cabinet, real-time according to current return circuit temperature control fan physical cooling, improvement life has the interlocking function between the return circuit concurrently.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a 350kW photovoltaic inverter's ageing test electric cabinet, includes quick-witted case and transformer, the transformer is located the inside of machine case, the transformer includes fixed folder, lower fixed folder and a plurality of return circuits of group, every group be provided with N wiring mouth, 220V wiring mouth, 400V wiring mouth, 480V wiring mouth, 540V wiring mouth, 600V wiring mouth and 800V wiring mouth on the return circuit, interlock between the return circuit, the front end of machine case is connected with output wiring stick and input switch, the fan is installed to the rear end of machine case, the inside of machine case possesses temperature monitoring module, temperature monitoring module with fan signal connection.

As an optimized technical scheme, two groups of cross flow fans are fixed at the bottom of the inner side of the chassis, and the two groups of cross flow fans are respectively positioned at the front side and the rear side of the transformer.

As an optimized technical scheme, the bottom of the chassis is provided with a chassis, and channel steel is connected between the transformer and the chassis.

As a preferable technical scheme, the underframe is provided with a sealing plate, and the sealing plate is provided with mounting holes.

As a preferable technical scheme, the case is hinged with a front door and a rear door, the fan is arranged on the rear door, and the front door is provided with a voltmeter, a temperature display and wiring holes.

The beneficial effects of the utility model are as follows: the utility model provides a 350kW photovoltaic inverter's ageing test electric cabinet, this 350kW photovoltaic inverter's ageing test electric cabinet possesses multiunit return circuit, becomes the interlocking relationship each other between the return circuit, under the condition that does not influence the use, has increased the security of whole test electric cabinet.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

Fig. 1 is a left-view structural diagram of an aging test electric cabinet of a 350kW photovoltaic inverter according to an embodiment;

fig. 2 is a front view structural diagram of an aging test electric cabinet of a 350kW photovoltaic inverter according to the embodiment;

fig. 3 is a right-side view block diagram of an aging test electric cabinet of a 350kW photovoltaic inverter according to the embodiment;

FIG. 4 is a combined structure diagram of a transformer and chassis according to an embodiment;

fig. 5 is a coil wiring diagram of a transformer according to an embodiment;

fig. 6 is a diagram of a cabinet wiring diagram of a transformer and a chassis according to an embodiment.

In fig. 1 to 6:

1. a chassis; 2. a transformer; 3. an upper fixing clamp; 4. a lower fixing clip; 5. a wiring port N; 6. 220V wiring port; 7. 400V wiring port; 8. 480V wiring port; 9. 540V wiring port; 10. 600V wiring port; 11. 800V wiring port; 12. an output terminal bar; 13. an input switch; 14. a fan; 15. a crossflow blower; 16. a chassis; 17. channel steel; 18. a sealing plate; 19. installing hole sites; 20. a front door; 21. a rear door; 22. a voltmeter; 23. a temperature display; 24. and wiring hole sites.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 6, in this embodiment, an aging test electric cabinet for a 350kW photovoltaic inverter includes a chassis 1 and a transformer 2, the transformer 2 is located inside the chassis 1, the transformer 2 includes an upper fixing clamp 3, a lower fixing clamp 4 and a plurality of groups of loops, each group of loops is provided with an N-number wiring port 5, a 220V wiring port 6, a 400V wiring port 7, a 480V wiring port 8, a 540V wiring port 9, a 600V wiring port 10 and an 800V wiring port 11, the loops are interlocked, the front end of the chassis 1 is connected with an output wiring rod 12 and an input switch 13, a fan 14 is installed at the rear end of the chassis 1, a temperature monitoring module is provided inside the chassis 1, and the temperature monitoring module is in signal connection with the fan 14.

Each group of loops is respectively provided with 6 GMC contactors, and the three GMC contactors are respectively distributed on a 220V wiring port 6, a 400V wiring port 7, a 480V wiring port 8, a 540V wiring port 9, a 600V wiring port 10 and a 800V wiring port 11, 220V/400V is 3P-180A,480V/500V/600V is 3P-150A,800V is 3P-100A, a inching switch is adopted to control the output of the GMC contactors, only one group of voltage output can be realized under the condition of interlocking, and the maximum current of the output end is provided with a fuse.

The temperature monitoring module detects the winding temperature and the iron core temperature, starts the fan 14 to cool when the internal temperature is more than 75 ℃, stops the operation of the fan 14 when the internal temperature is lower than 60 ℃, gives out alarm sound when the internal winding exceeds 135 ℃, and automatically closes the total input power supply by the transformer 2 when the internal winding exceeds 150 ℃, so that the safety is ensured.

Two groups of cross flow fans 15 are fixed at the bottom of the inner side of the chassis 1, the two groups of cross flow fans 15 are respectively positioned at the front side and the rear side of the transformer 2, and the added cross flow fans 15 discharge hot air from two sides.

The bottom of the chassis 1 is provided with a chassis 16, a channel steel 17 is connected between the transformer 2 and the chassis 16, the channel steel 17 jacks up the transformer 2, and the reserved space dissipates heat.

Moreover, be provided with shrouding 18 on the chassis 16, be provided with mounting hole site 19 on the shrouding 18, the mounting hole site 19 is reserved other circuit components and parts and uses when installing, strong adaptability.

Of course, the case 1 is hinged with a front door 20 and a rear door 21, the fan 14 is mounted on the rear door 21, the front door 20 is mounted with a voltmeter 22, a temperature display 23 and a wiring hole site 24, and a user can control the internal transformer 2 on the front door 20 in real time after closing the front door 20 and the rear door 21.

In the winding process of the transformer 2, the coil is wound by adopting aluminum wires, NM paper with the thickness of 0.13mm is used between layers for insulation, each group of windings is wound by adopting independent coils, the length and the sectional area of a loop wire turn are always ensured, an air passage is arranged between the primary stages, the heat dissipation problem is solved, the coil is wound in a high-precision winding machine, before the product is immersed in oil, the product is baked in advance for moisture removal, vacuum is immersed in paint, baked at constant temperature for solidification, the aluminum is led out, the wire row needs to be subjected to chamfering treatment, the sharp part of the aluminum row is prevented from damaging a cable, an iron core needs to be tensioned, an insulating gasket is arranged at a penetrating screw rod, the screw rod is insulated from the iron core, a grounding hole is subjected to paint removal treatment, a grounding mark is pasted, and a label is pasted on the left side of the top of the iron core of the transformer 2 by adopting a scratch-resistant and waterproof material.

It should be noted that the above embodiments are merely preferred embodiments of the present utility model and the applied technical principles, and any changes or substitutions easily conceivable to those skilled in the art within the scope of the present utility model are included in the scope of the present utility model.

Claims

1. The utility model provides a 350kW photovoltaic inverter's ageing test electric cabinet, its characterized in that, includes quick-witted case and transformer, the transformer is located the inside of machine case, the transformer includes fixed folder, lower fixed folder and a plurality of group return circuit, every group be provided with N wiring mouth, 220V wiring mouth, 400V wiring mouth, 480V wiring mouth, 540V wiring mouth, 600V wiring mouth and 800V wiring mouth on the return circuit, interlock between the return circuit, the front end of machine case is connected with output wiring stick and input switch, the fan is installed to the rear end of machine case, the inside of machine case possesses temperature monitoring module, temperature monitoring module with fan signal connection.

2. The electrical cabinet for testing the aging of the 350kW photovoltaic inverter according to claim 1, wherein two groups of cross flow fans are fixed at the bottom of the inner side of the cabinet, and the two groups of cross flow fans are respectively positioned at the front side and the rear side of the transformer.

3. The electrical cabinet for testing the aging of the 350kW photovoltaic inverter according to claim 1, wherein a chassis is arranged at the bottom of the chassis, and channel steel is connected between the transformer and the chassis.

4. A burn-in testing electrical cabinet for a 350kW photovoltaic inverter of claim 3 wherein the chassis is provided with a closure plate, the closure plate being provided with mounting holes.

5. The electrical cabinet for testing the aging of the 350kW photovoltaic inverter according to claim 1, wherein the cabinet is hinged with a front door and a rear door, the fan is installed on the rear door, and the front door is installed with a voltmeter, a temperature display and wiring holes.