CN209329423U - A kind of large capacity cut-offs protection cabinets - Google Patents

Abstract

The utility model proposes a kind of large capacities to cut-off protection cabinets, including cabinet body assembly, handcart type vacuum circuit breaker, heater, contact box, a static contact, bus casing, main bus-bar and branch bus assembly, simulation board, a cable, cable clip, earth bus assembly, conducting bus, the assembly of dead earth bus, current transformer and fixed type multifunctional protective device.The utility model has the function of quickly absorbing the safety of overvoltage and the other equipment of protection; simultaneously by the breaker effective protection of fixed type multifunctional protective device opponent's vehicle type vacuum circuit breaker cabinet arranged side by side, it is ensured that the effect that handcart type vacuum circuit breaker large capacity is effectively cut-off.Structure is simple, easy to operate, has the application value of reality.

Description

A kind of large capacity cut-offs protection cabinets

Technical field

The utility model belongs to photovoltaic power generation, state's net distribution, commercial power technical field, and in particular to a kind of large capacity is opened Disconnected protection cabinets.

Background technique

The quick-speed turning on-off ability of failed shorted electric current is one of most important performance of breaker, after contact of breaker separation, Electric arc is generated between contact, arc current zero passage moment, contact both ends will appear transient state return voltage, rate of rise of transient recovery voltage It is the most important factor that influences breaker and can cut-off with amplitude, because the arc extinguishing success or not of breaker, depends primarily on Rate of rise of transient recovery voltage and amplitude.With the continuous expansion of electric system transmission capacity, grid short circuit levels of current is continuous Increase, when maximum short circuit current be more than breaker rated short circuit drop-out current when, breaker can occur because arc extinguishing failure can not Cut-off the accident of short trouble.Under normal circumstances, three-phase shortcircuit is the most serious, and short circuit current is likely to be breached up to ten thousand or even hundreds of thousands The effect of peace, heat and power caused by electric current big in this way can make electrical equipment wreck, as generator unit stator winding, Explosion of Transformer etc..

Utility model content

The purpose of the utility model is to provide a kind of large capacities to cut-off protection cabinets, damps and inhibits vacuum circuit breaker transient state Restore the climbing and amplitude of voltage, realizes the effect of change of current energy dissipating demagnetization blow-out.

To achieve the above object, the utility model provides the following technical solutions:

A kind of large capacity cut-offs protection cabinets, including cabinet body assembly, handcart type vacuum circuit breaker, heater, contact box, primary Static contact, bus casing, main bus-bar and branch bus assembly, simulation board, a cable, cable clip, earth bus assembly, conducting are female Line, the assembly of dead earth bus, current transformer and fixed type multifunctional protective device；The cabinet body assembly is main body portion Framework, the handcart type vacuum circuit breaker, heater, contact box, a static contact, bus casing, main bus-bar and branch bus fill Match, the assembly of a cable, cable clip, earth bus, bus, the assembly of dead earth bus, current transformer and fixation be connected Formula multifunctional protection device is mounted on cabinet body assembly inside, the main bus-bar and branch bus assembly and a static contact It connects, then is assembled with handcart type vacuum circuit breaker, conducting bus, current transformer, dead earth bus, cable of cable clip And earth bus assembly is in turn connected to form a complete Current Voltage access, the handcart type vacuum circuit breaker move from And connected or separated with a static contact, the fixed type multifunctional protective device and the handcart type vacuum circuit breaker are simultaneously Connection, the heater are mounted on cabinet body assembly inside, and the contact box is mounted on a static contact and the handcart The junction of formula vacuum circuit breaker, the bus casing are mounted at the main bus-bar and branch bus assembly, the simulation board peace It is assembled mounted in the cabinet body external.

According to the one aspect of the utility model, the heater assembles the cabinet body and carries out heating and dehumidification.

According to the one aspect of the utility model, the width of the cabinet body assembly is 800mm, depth 1500mm.

According to the one aspect of the utility model, the cabinet body high-low cabinet and and flat-top cabinet height be 2300mm.

By adopting the above scheme, the beneficial effects of the utility model are: the utility model is for photovoltaic power generation, state's net A kind of large capacity designed by distribution, commercial power industry actual demand cut-offs protection cabinets, and structure is simple, easy to operate, tool There is the function for the safety for quickly absorbing overvoltage and the other equipment of protection.Simultaneously by fixed type multifunctional protective device opponent's vehicle type The breaker effective protection of vacuum circuit breaker cabinet arranged side by side, it is ensured that the effect that handcart type vacuum circuit breaker large capacity is effectively cut-off. Change of current energy dissipating demagnetization blow-out for photovoltaic power generation, state's net distribution, commercial power industry provides effective support, has reality Application value.

Detailed description of the invention

Fig. 1 is the main view of the utility model.

Fig. 2 is the right view of the utility model.

Fig. 3 is the protection scheme figure of the utility model.

Description of symbols: cabinet body assembly 1, handcart type vacuum circuit breaker 2, heater 3,4, static contacts 5 of contact box, Bus casing 6, main bus-bar and branch bus assembly 7, simulation 8, cables 9 of board, cable clip 10, earth bus assembly 11, conducting Bus 12, dead earth bus assemble 13, current transformer 14, fixed type multifunctional protective device 15.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As depicted in figs. 1 and 2, the large capacity of the utility model cut-offs protection cabinets, is to assemble 1, handcart type vacuum by cabinet body Breaker 2, heater 3,4, static contacts 5 of contact box, bus casing 6, main bus-bar and branch bus assembly 7, simulation board 8, one Secondary cable 9, cable clip 10, earth bus assemble 11, conducting bus 12, dead earth bus assembles 13, current transformer 14, solid Fixed pattern multifunctional protection device 15 forms.

With reference to Fig. 1 and Fig. 2, the movement of the utility model is associated with are as follows: cabinet body assembly 1 is the main part framework of the cabinet, cabinet Inside body assembly 1 mainly by main bus-bar and branch bus assemble 7 connect a static contact 5 and handcart type vacuum circuit breaker 2 again with lead Logical bus 12, current transformer 14, dead earth bus assembly 13,10, cables 9 of cable clip and earth bus assembly 11 connect Connect to form complete an electric current, voltage path, and by fixed type multifunctional protective device 15 and handcart type vacuum circuit breaker 2 into Row is in parallel, and heater 3 is that cabinet body assembly 1 carries out heating and damp proof function, contact box 4 be in order to protect a static contact 5 with Set by the junction class of insulation of handcart type vacuum circuit breaker 2 requires, bus casing 6 is protection main bus-bar and branch bus assembly 7 The class of insulation require set by, simulation board 8 mounted in cabinet body assembly 1 outside, be the protection scheme figure of the utility model, see Fig. 3.

With reference to Fig. 1 and Fig. 2, the protection philosophy of the utility model are as follows: the cabinet and other bus cabinet arranged in parallel, therefore this is entire When occurring the raising of various overvoltage on bus, 7 pairs of static contacts 5 are assembled by main bus-bar and branch bus and handcart type vacuum is disconnected Road device 2 assembles 13,10, cables 9 of cable clip and ground connection with conducting bus 12, current transformer 14, dead earth bus again Bus assembly 11 forms complete an electric current, voltage path, directly absorb simultaneously by fixed type multifunctional protective device 15 Assemble 13, cables 9 by dead earth bus, cable clip 10, earth bus assembly 11 enter the earth, embody practical The function of novel quick absorption overvoltage and the safety of the other equipment of protection.It is right by fixed type multifunctional protective device 15 simultaneously The breaker effective protection of the cabinet arranged side by side of handcart type vacuum circuit breaker 2, it is ensured that 2 large capacity of handcart type vacuum circuit breaker is effectively cut-off Effect.

It can understand the above description of the embodiments is intended to facilitate those skilled in the art and apply this specially Benefit.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein General Principle is applied in other embodiments without having to go through creative labor.Therefore, the utility model is not limited to here Embodiment, those skilled in the art's announcement according to the present utility model, do not depart from improvement that the utility model scope is made and Modification should be all within the protection scope of the utility model.

Claims (4)

1. a kind of large capacity cut-offs protection cabinets, it is characterised in that: including cabinet body assembly, handcart type vacuum circuit breaker, heater, touching Head cartridge, a static contact, bus casing, main bus-bar and branch bus assembly, simulation board, a cable, cable clip, earth bus fill Match, bus, the assembly of dead earth bus, current transformer and fixed type multifunctional protective device is connected；The cabinet body assembly For main body portion framework, the handcart type vacuum circuit breaker, heater, contact box, static contact, bus casing, a main bus-bar With branch bus assembly, the assembly of a cable, cable clip, earth bus, conducting bus, the assembly of dead earth bus, Current Mutual Inductance It is internal that device and fixed type multifunctional protective device are mounted on cabinet body assembly, the main bus-bar and branch bus assembly with it is described One time static contact connects, then assembles with handcart type vacuum circuit breaker, conducting bus, current transformer, dead earth bus, cable It presss from both sides a cable and earth bus assembly is in turn connected to form a complete Current Voltage access, the handcart type vacuum open circuit Device is removable to connect or separate with a static contact, and the fixed type multifunctional protective device and the handcart-type are true Empty breaker is in parallel, and the heater is mounted on cabinet body assembly inside, and the contact box is mounted on a static contact With the junction of the handcart type vacuum circuit breaker, the bus casing is mounted at the main bus-bar and branch bus assembly, institute It states simulation board and is mounted on cabinet body assembly outside.

2. a kind of large capacity according to claim 1 cut-offs protection cabinets, it is characterised in that: the heater is to the cabinet body Assembly carries out heating and dehumidification.

3. a kind of large capacity according to claim 1 cut-offs protection cabinets, it is characterised in that: the width of cabinet body assembly is 800mm, depth 1500mm.

4. a kind of large capacity according to claim 1 cut-offs protection cabinets, it is characterised in that: the cabinet body high-low cabinet and and flat Top Tank height is 2300mm.