CN2648655Y - Special distribution box for construction site - Google Patents
Special distribution box for construction site Download PDFInfo
- Publication number
- CN2648655Y CN2648655Y CN 200320110323 CN200320110323U CN2648655Y CN 2648655 Y CN2648655 Y CN 2648655Y CN 200320110323 CN200320110323 CN 200320110323 CN 200320110323 U CN200320110323 U CN 200320110323U CN 2648655 Y CN2648655 Y CN 2648655Y
- Authority
- CN
- China
- Prior art keywords
- construction site
- distribution box
- seat
- line
- inlet wire
- 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 - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000007689 inspection Methods 0.000 abstract 1
- 230000001012 protector Effects 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 101100042683 Arabidopsis thaliana SLAC1 gene Proteins 0.000 description 1
- 102100032982 CCR4-NOT transcription complex subunit 9 Human genes 0.000 description 1
- 101100137454 Drosophila melanogaster Rcd4 gene Proteins 0.000 description 1
- 208000036893 GUCY2D-related dominant retinopathy Diseases 0.000 description 1
- 208000036357 GUCY2D-related recessive retinopathy Diseases 0.000 description 1
- 101000942590 Homo sapiens CCR4-NOT transcription complex subunit 9 Proteins 0.000 description 1
- 101001026582 Homo sapiens KAT8 regulatory NSL complex subunit 3 Proteins 0.000 description 1
- 201000000440 cone-rod dystrophy 6 Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a special block terminal of construction site, in the block terminal of constituteing by box, wiring mounting panel, inlet wire seat, outlet wire seat, earth-leakage protector etc, adopt one to have the common base plate ground connection seat of more than two terminals with each protection zero line ground connection to all set up a spiral fuse on each looks line of inlet wire seat input, avoided the operation danger that brings with work zero line and protection zero line sharing that current similar equipment easily leads to, the incasement wiring is clear, it is convenient to maintain, the inspection.
Description
The utility model belongs to electric equipment, especially the electric appliance circuits manufacturing field of equipment.
380/220V three phase and four wire circuit system used distribution box in construction site does not supply the shared ground connection junction block of multiple devices ground connection owing to be provided with separately at present, and following misoperation often appears in the more weak operator of some labor safeties consciousness:
1. the zero connection protection line with the metal shell of construction equipment directly joins with the power supply neutral line (N), such result, and in the electric loading imbalance, when producing zero-sequence current, earth connection produces voltage to earth, and electric shock accidents takes place.
2. the earth connection of multiple devices is connected on a certain on the earthing of casing screw of grounding apparatus.Such result makes the end of a thread twine in a jumble, and operator and security staff can not clearly distinguish wire connection state.A plurality of the end of a thread also are difficult for stable on a ground connection screw, easily cause virtual connection, misconnection phenomenon.
In addition; existing distribution box earth leakage protective device is after carrying out the earth leakage protective action; it separates and closure state can only be judged by the position of switch handle; because the difference at visual angle; the position is held inaccurate; easily cause the danger of electric shock to the attendant, the maintainer can't simply judge cut-offfing of each phase, brings inconvenience to line maintenance.
Above shortcoming in view of prior art, the purpose of this utility model is a kind of special-purpose distribution box in job site with independent grounding junction block of design, and make it to have the distinct advantage of line alignment, can make operator and security staff when checking circuit, understand line security at a glance.
The purpose of this utility model is to realize by following design.
The special-purpose distribution box of construction site; form by casing, wiring mounting panel, inlet wire seat, outlet seat, earth leakage protective device etc.; cobasis plate earthing junction block connection with two above binding posts is ground wire grounded, all is equipped with screw type fuse on each phase line of inlet wire seat input.
After having adopted design as above, on terminal block, be provided with separately and ground connection junction block that the neutral line of powering is separated, form so-called Three-phase five-wire (U, V, W triple line, neutral N line, the ground protection line PE) mode of connection.The common metal substrate ground connection junction block with two above binding posts that is provided with is screwed in the protection connecting to neutral line of each equipment respectively on each binding post separately, and ground connection is firm, contact resistance is little, no virtual connection phenomenon; Because every protective wire that needs ground connection is (as the protection connecting to neutral line of introducing; the protection connecting to neutral line that links to each other with the equipment metal shell; the iterative earthings of equipment etc.) all sit in the right seat on junction block, wrong line or few wiring a glance just can find out that easy operating person and security staff differentiate line conditions.After inserting screw type fuse, when earth leakage protective device was carried out the earth leakage protective operational motion, the molten cap that the maintainer is revolved plug fuse is open-circuit line significantly just, had avoided causing the possibility of electric shock.
Description of drawings is as follows.
Fig. 1 is the electric hookup of distribution box embodiment of the present utility model.
Fig. 2 is the enforcement illustration of the cobasis plate earthing junction block of the utility model distribution box.
In Fig. 1,1 is the inlet wire junction block of distribution box, connects U, V, three phase lines of W and neutral line N on it, and 2 is cobasis plate earthing junction block, and RCD1, RCD2, RCD3 are the 380V earth leakage protective device, and 3,4,5 are respectively apparatus socket; RCD4 is the 220V earth leakage protective device, and 6 is the 220V apparatus socket.Be provided with screw type fuse 7,8,9 on U, V, the W triple line respectively.Fig. 2 is the example structure figure of cobasis plate earthing junction block 2, can find out among the figure, has the earth connection that each binding post of two above binding posts (this example is 3) will connect particular device respectively on the metal substrate 10 and is connected on the common ground connection wiring substrate 10.Junction block 2 is installed and (generally being welding) is set on mounting panel.
Claims (2)
1, the special-purpose distribution box of a kind of construction site is made up of casing, wiring mounting panel, inlet wire seat, outlet seat, earth leakage protective device etc., it is characterized in that,
A) the cobasis plate earthing junction block (2) with two above binding posts connects ground wire grounded;
B) on each phase line of inlet wire seat input, all be equipped with screw type fuse (7,8,9).
2, the special-purpose distribution box of construction site according to claim 1 is characterized in that described cobasis plate earthing junction block is arranged on the mounting panel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200320110323 CN2648655Y (en) | 2003-10-22 | 2003-10-22 | Special distribution box for construction site |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200320110323 CN2648655Y (en) | 2003-10-22 | 2003-10-22 | Special distribution box for construction site |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2648655Y true CN2648655Y (en) | 2004-10-13 |
Family
ID=34343627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200320110323 Expired - Fee Related CN2648655Y (en) | 2003-10-22 | 2003-10-22 | Special distribution box for construction site |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2648655Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110120635A (en) * | 2018-02-07 | 2019-08-13 | 五冶集团上海有限公司 | One kind being used for construction site water proof and dust proof distribution box |
-
2003
- 2003-10-22 CN CN 200320110323 patent/CN2648655Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110120635A (en) * | 2018-02-07 | 2019-08-13 | 五冶集团上海有限公司 | One kind being used for construction site water proof and dust proof distribution box |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |