CN202721061U - Outdoor low voltage protection isolation switch - Google Patents
Outdoor low voltage protection isolation switch Download PDFInfo
- Publication number
- CN202721061U CN202721061U CN 201220362254 CN201220362254U CN202721061U CN 202721061 U CN202721061 U CN 202721061U CN 201220362254 CN201220362254 CN 201220362254 CN 201220362254 U CN201220362254 U CN 201220362254U CN 202721061 U CN202721061 U CN 202721061U
- Authority
- CN
- China
- Prior art keywords
- terminal
- folding
- arc
- low voltage
- insulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to the improvement of a power grid distribution device and relates to an outdoor low voltage protection isolation switch which is provided with a bracket, insulators, input terminals and output terminals. The outdoor low voltage protection isolation switch is characterized in that insulators in the middle are provided with arc extinguishing mechanisms; each arc extinguishing mechanism is provided with an opening and closing terminal and a rotating shaft; each opening and closing terminal is provided with a connecting plate; the connecting plate is connected with the corresponding input terminal through a fuse; the rotating shaft of each arc extinguishing mechanism is provided with an opening and closing knife switch; the same side of three opening and closing knife switches is provided with an operation mechanism; the operation mechanism is arranged with the bracket through a pin shaft and a boost spring; and the operation mechanism is hinged with the three opening and closing knife switches through three insulating pull rods. The outdoor low voltage protection isolation switch provided by the utility model solves the problems of unable load current opening and closing and unable overload and short circuit transformer protection of the existing low voltage isolation switch, and is mainly used for the improvement of the existing low voltage isolation switch.
Description
(i) technical field: the utility model relates to the improvement of electrical network controller switching equipment, is that a kind of outdoor low voltage protection cuts off switch.
(ii) background technology: at present; China's electrical network outdoor transformer low-pressure side is mainly to adopt low voltage isolation switch to be connected with line load; the problem that the prior art low voltage isolation switch exists is: low voltage isolation switch or can not the opening and closing load current, or can not transship, the short-circuit protection transformer.
(iii) summary of the invention: it is existing or can not the opening and closing load current that the purpose of this utility model will solve existing low voltage isolation switch exactly, or can not transship, the problem of short-circuit protection transformer, provide a kind of outdoor low voltage protection to cut off switch.
Concrete scheme of the present utility model is: a kind of outdoor low voltage protection cuts off switch, and it is provided with support, and on support, front and back are furnished with three groups of insulators, and every group of insulator is to be the left and right distribution by three insulators to form; On the insulator in every group of insulator left side, input terminal all is installed, lead-out terminal all is installed on the insulator on every group of insulator right side; It is characterized in that: on the insulator of every group of insulator centre, arc-extinguishing mechanism all is installed, be equipped with folding terminal and rotating shaft on each arc-extinguishing mechanism, be equipped with connecting plate on each folding terminal, connecting plate on each folding terminal is all to adopt fuse to connect with corresponding input terminal, and rotating shaft place of each arc-extinguishing mechanism all is equipped with the folding plug-in strip; The same side of three secondary folding plug-in strips is equipped with operating mechanism, operating mechanism is provided with insulated tension pole, bearing pin and power assistant spring, operating mechanism is with bearing pin and power assistant spring and is configured to installation, and operating mechanism is to form hinged installation with three insulated tension poles and three secondary folding plug-in strips; When described three secondary folding plug-in strips are in the combined floodgate installation site, the two ends of every secondary folding plug-in strip are respectively to be clamped and connected with corresponding folding terminal and corresponding lead-out terminal, each lead-out terminal stretch out the folding plug-in strip stretch out that value H stretches out the folding plug-in strip than each folding terminal stretch out large 25 millimeters-30 millimeters of value h.
Arc-extinguishing mechanism described in the utility model is comprised of arc extinguishing assembly, folding terminal, rotating shaft and arc extinguishing seat, connecting plate is provided in a side of the top of folding terminal, rotating shaft is to cast on the arc extinguishing seat, the top of arc extinguishing seat is provided with arc control device, the arc extinguishing assembly is mounted in the arc control device of arc extinguishing seat, and the arc extinguishing assembly is with folding terminal and rotating shaft, to be connected respectively.
The utility model is compared with existing low voltage isolation switch, input terminal of the present utility model and lead-out terminal are the both sides that are arranged in arc-extinguishing mechanism and folding plug-in strip, connecting plate on the utility model arc-extinguishing mechanism folding terminal is to adopt fuse to be connected with input terminal, input terminal, folding plug-in strip and lead-out terminal form major loop, and the folding terminal in arc-extinguishing mechanism, arc extinguishing assembly, folding plug-in strip and lead-out terminal form subsidiary loop; Its disconnection process is: the folding plug-in strip first separates with the folding terminal under the effect of operating mechanism, electric current is transferred to the subsidiary loop arc extinguishing by major loop, folding plug-in strip now and lead-out terminal are also in connected state, after the subsidiary loop arc extinguishing process of a few tens of milliseconds, folding plug-in strip and lead-out terminal complete unloaded the disconnection; Making process is: because lead-out terminal exceeds 30 millimeters than folding terminal, at first the folding plug-in strip is clamped and connected with lead-out terminal under the effect of operating mechanism, electric current is communicated with subsidiary loop and arc extinguishing through the folding plug-in strip, now folding plug-in strip and folding terminal also do not close a floodgate, after the subsidiary loop arc extinguishing of a few tens of milliseconds, folding plug-in strip and folding terminal close a floodgate, and electric current is transferred to major loop by subsidiary loop; The utility model is simple in structure, effect is remarkable, security performance is high; It is existing or can not the opening and closing load current that the utility model preferably resolves existing low voltage isolation switch, or can not transship, the problem of short-circuit protection transformer.
(iv) accompanying drawing explanation:
Fig. 1: the utility model structural front view;
Fig. 2: the utility model structure vertical view;
Fig. 3: arc-extinguishing mechanism structural front view;
Fig. 4: arc-extinguishing mechanism structure vertical view;
Fig. 5: operating mechanism structural front view;
In figure: 1-support, 2-insulator, 3-input terminal, 4-fuse, 5-arc-extinguishing mechanism, 6-folding plug-in strip, 7-lead-out terminal, 8-operating mechanism, 9--arc extinguishing assembly, the 10--arc control device, 11-connecting plate, 12-folding terminal, 13-rotating shaft, 14--arc extinguishing seat, 15-insulated tension pole, 16-bearing pin, 17-power assistant spring.
(v) embodiment:
Embodiment: (referring to Fig. 1, Fig. 2) a kind of outdoor low voltage protection cuts off switch, and it is provided with support 1, and on support 1, front and back are furnished with three groups of insulators 2, and every group of insulator 2 is to be the left and right distribution by three insulators 2 to form; On the insulator 2 in every group of insulator 2 left sides, input terminal 3 all is installed, on the insulator 2 on every group of insulator 2 right sides, lead-out terminal 7 all is installed; Particularly: on the insulator 2 of every group of insulator 2 centres, arc-extinguishing mechanism 5 all is installed, be equipped with folding terminal 12 on each arc-extinguishing mechanism 5 and rotating shaft 13(refers to Fig. 3, Fig. 4), be equipped with connecting plate 11 on each folding terminal 12, connecting plate 11 on each folding terminal 12 is all to adopt fuse 4 to connect with corresponding input terminal 3, and rotating shaft 13 places of each arc-extinguishing mechanism 5 all are equipped with folding plug-in strip 6; The same side of three secondary folding plug-in strips 6 is equipped with operating mechanism 8, operating mechanism 8 is provided with insulated tension pole 15, bearing pin 16 and power assistant spring 17(and refers to Fig. 5), operating mechanism 8 is to form and install with support 1 with bearing pin 16 and power assistant spring 17, and operating mechanism 8 is to form hinged installation with three insulated tension poles 15 and three secondary folding plug-in strips 6; When described three secondary folding plug-in strips 6 are in the combined floodgate installation site, the two ends of every secondary folding plug-in strip 6 are respectively to be clamped and connected with corresponding folding terminal 12 and corresponding lead-out terminal 7, each lead-out terminal 7 stretch out folding plug-in strip 6 stretch out that value H stretches out folding plug-in strip 6 than each folding terminal 12 stretch out large 25 millimeters-30 millimeters of value h.
The described arc-extinguishing mechanism 5 of the present embodiment forms (referring to Fig. 3, Fig. 4) by arc extinguishing assembly 9, folding terminal 12, rotating shaft 13 and arc extinguishing seat 14, connecting plate 11 is provided in a side of the top of folding terminal 12, rotating shaft 13 is to cast on arc extinguishing seat 14, the top of arc extinguishing seat 14 is provided with arc control device 10, arc extinguishing assembly 9 is mounted in the arc control device 10 of arc extinguishing seat 14, and arc extinguishing assembly 9 is with folding terminal 12 and rotating shaft 13, to be connected respectively.
Claims (2)
1. an outdoor low voltage protection cuts off switch, and it is provided with support, and on support, front and back are furnished with three groups of insulators, and every group of insulator is to be the left and right distribution by three insulators to form; On the insulator in every group of insulator left side, input terminal all is installed, lead-out terminal all is installed on the insulator on every group of insulator right side; It is characterized in that: on the insulator of every group of insulator centre, arc-extinguishing mechanism all is installed, be equipped with folding terminal and rotating shaft on each arc-extinguishing mechanism, be equipped with connecting plate on each folding terminal, connecting plate on each folding terminal is all to adopt fuse to connect with corresponding input terminal, and rotating shaft place of each arc-extinguishing mechanism all is equipped with the folding plug-in strip; The same side of three secondary folding plug-in strips is equipped with operating mechanism, operating mechanism is provided with insulated tension pole, bearing pin and power assistant spring, operating mechanism is with bearing pin and power assistant spring and is configured to installation, and operating mechanism is to form hinged installation with three insulated tension poles and three secondary folding plug-in strips; When described three secondary folding plug-in strips are in the combined floodgate installation site, the two ends of every secondary folding plug-in strip are respectively to be clamped and connected with corresponding folding terminal and corresponding lead-out terminal, each lead-out terminal stretch out the folding plug-in strip stretch out that value H stretches out the folding plug-in strip than each folding terminal stretch out large 25 millimeters-30 millimeters of value h.
2. a kind of outdoor low voltage protection according to claim 1 cuts off switch; it is characterized in that: described arc-extinguishing mechanism is comprised of arc extinguishing assembly, folding terminal, rotating shaft and arc extinguishing seat; connecting plate is provided in a side of the top of folding terminal; rotating shaft is to cast on the arc extinguishing seat; the top of arc extinguishing seat is provided with arc control device; the arc extinguishing assembly is mounted in the arc control device of arc extinguishing seat, and the arc extinguishing assembly is with folding terminal and rotating shaft, to be connected respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362254 CN202721061U (en) | 2012-07-25 | 2012-07-25 | Outdoor low voltage protection isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362254 CN202721061U (en) | 2012-07-25 | 2012-07-25 | Outdoor low voltage protection isolation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721061U true CN202721061U (en) | 2013-02-06 |
Family
ID=47622873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220362254 Expired - Lifetime CN202721061U (en) | 2012-07-25 | 2012-07-25 | Outdoor low voltage protection isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202721061U (en) |
-
2012
- 2012-07-25 CN CN 201220362254 patent/CN202721061U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103578834A (en) | Outdoor low-voltage protection isolation switch | |
| CN110021486B (en) | Automatic reclosing device for voltage-loss tripping | |
| CN202307657U (en) | 126 kV outdoor AC high-voltage isolation switch | |
| CN202721061U (en) | Outdoor low voltage protection isolation switch | |
| CN206225875U (en) | A kind of solid insulated switchgear | |
| CN104752090A (en) | High-voltage disconnecting switch convenient to maintain | |
| CN201717670U (en) | Dual-power-supply switching device with overvoltage protection | |
| CN203423474U (en) | Automatic closing controller | |
| CN205140786U (en) | Electric circuit breaker of pneumatic type | |
| CN203632347U (en) | Double-bus voltage parallel switching device based on uninterrupted power supply | |
| CN203674064U (en) | Split type solid-sealed post terminal structure | |
| CN201956257U (en) | Outdoor alternating-current high-voltage disconnecting switch | |
| CN207367902U (en) | A kind of quick acting switching-off device | |
| CN205248229U (en) | Load switch and fuse combination switch | |
| CN103199441B (en) | For the main transformer plug-in type switch of transformer station | |
| CN205282369U (en) | Intelligence vacuum circuit breaker | |
| CN203387169U (en) | Vacuum circuit breaker type loop network cabinet | |
| CN205140843U (en) | Isolating switch | |
| CN202601497U (en) | Automatic recloser | |
| CN205104432U (en) | Knob insulator formula circuit breaker | |
| CN201708446U (en) | Vacuum disconnector combined electrical apparatus | |
| CN203242919U (en) | Main transformer plug-in type switch for transformer substation | |
| CN204681069U (en) | A kind of distribution low-voltage air switching device with auto-reset function | |
| CN203242554U (en) | Vacuum circuit breaker | |
| CN203787336U (en) | Pneumatic fling-cut switch in novel high voltage and large current test circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |
|
| CX01 | Expiry of patent term |