CN104134959B - The installation method of full mould casted middle voltage bus rod - Google Patents
The installation method of full mould casted middle voltage bus rod Download PDFInfo
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- CN104134959B CN104134959B CN201410399689.XA CN201410399689A CN104134959B CN 104134959 B CN104134959 B CN 104134959B CN 201410399689 A CN201410399689 A CN 201410399689A CN 104134959 B CN104134959 B CN 104134959B
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Abstract
The present invention relates to the installation method of a kind of full mould casted middle voltage bus rod.The installation of full mould casted middle voltage bus rod does not has corresponding national standard or standardized construction technology, easily causes construction process the most smooth in work progress.The present invention uses the installation procedure of " installation → sequence examing → megger test → joint mold → test → charged trail run of the location of the inspection → bus rod before preparation of construction → installation → suspension and support fabrication and installation → bus rod ", installs full mould casted middle voltage bus rod.Step reasonable standard of the present invention, can effectively ensure construction quality and safety, shortens the engineering time, improves efficiency of construction.
Description
Technical field
The invention belongs to engineering construction technical field of electricity, be specifically related to the installation of a kind of full mould casted middle voltage bus rod
Method.
Background technology
Full mould casted middle voltage bus rod is a kind of novel product, and it is the middle pressure bus duct without metal shell, bus duct
Shell is to use the excellent materials such as volcanic rock inorganic mineral to make with the molding of a small amount of mixed with resin, has good insulating properties
And mechanical resistant strength character, protection against the tide, nonflammable and tool self-extinguishment.Bus without metal shell is resistant to the corrosion of various chemicals, energy
It is applicable to various severe and high-cleanness environment, just because of it, there is excellent performance, be widely used in power plant, oil at present
The various place such as chemical industry, Ferrous Metallurgy, but the installation of full mould casted middle voltage bus rod does not has corresponding national standard or standard
The construction technology changed, owing to requiring to understand seldom to bus rod construction technology and technology in work progress, it is easy to cause
Construction process is not smooth, construction quality is poor, efficiency of construction is relatively low.
Summary of the invention
It is an object of the invention to provide the installation method of a kind of full mould casted middle voltage bus rod, it is adaptable in full molding formula
The installation of pressure bus rod, improves efficiency of construction.
The technical solution adopted in the present invention is:
The installation method of full mould casted middle voltage bus rod, it is characterised in that:
Realized by following steps:
Step one: the location of bus rod:
The location of bus rod starts location from the original position of bus rod, and the location of bus rod uses following three kinds
Mode:
(1) straight line localization: first, finds out the central point connecting equipment bus leading-out terminal needed for two；Secondly, according to female
The central point of line leading-out terminal, utilizes infrared level gauge that two central points connect i.e. bus centrage into a line, and carries out mark；
(2) turning location: position according to the turning position of layout design, according to equipment at the indoor absolute altitude and of civil engineering
Bus leading-out terminal central point measure location；
(3) location through walls: the location at place through walls relies on the bus having had good positioning to carry out location and installation, dodges process duct outside room
Line and house crossbeam, column；
Step 2: the interim fabrication and installation lifting suspension bracket:
Interim lifting suspension bracket includes bracing frame, insulator support, metal bracket and suspension bracket:
(1) bracing frame uses angle steel, channel-section steel, full thread suspension rod and band steel to make, and uses " one " font, " L " type, " U " word
Type or the pattern of " T " font, processing dimension maximum error 5mm；On bracing frame, boring uses bench drill or electric hand drill, and aperture is not more than
Fixing diameter of bolt 2mm；
(2) 8# channel-section steel is cut into the pipe nipple of 600mm, as metal bracket；Measure respectively to both sides from the center of channel-section steel
The position borings such as 170mm and 280mm；Finally, insulator support is fixed on channel-section steel by galvanized bolt；
(3) installation of suspension bracket:
1. centered by the bus centrage mark having good positioning, measure 280mm to both sides respectively carry out mark boring；
2. utilizing electric hammer to carry out in the mark position on roof boring Φ 10 hole, hole depth is about 50mm, is arranged in hole by tube expansion,
Again screw mandrel is fixed in tube expansion, then screw mandrel is tightened；
3. by the integral installation of prefabricated insulator support and channel-section steel on screw mandrel, suspension bracket two screw mandrels of application, Gu
Fixed firm, suspension bracket application double nut clamps；
4. continue every 2 meters of positions, suspension bracket to be installed in the same way, can suitably increase at turning or excessively wall
Suspension bracket；
When turning with position mounting suspension through walls, the distance of screw mandrel and bus is not less than 8cm, remaining step and straight line
Section is consistent；
(4) installation of bracing frame:
It is the insulator support of bus rod and the integral installation of channel-section steel to be fixed on bracing frame that bracing frame is installed, and mainly walks
Suddenly:
1. mark centered by the bus centrage mark having good positioning；
2. using the overall center of the insulator support made and channel-section steel and bus centrage as a central point；
3. by the integral solder of insulator support and channel-section steel on bracing frame top；
4. continue every 2 meters of positions, bracing frame to be installed in the same way, suitably increase at turning or excessively wall and prop up
Support；
5., when bracing frame uses expansion bolt to fix, expansion bolt fixed support is no less than two, and expansion bolt adds plain cushion
And spring pad；
6. when bracing frame and embedded iron parts use and are welded and fixed, support weld brush antifouling paint；
7. bracing frame spacing is uniform, and levelness meets the requirement of bus duct levelness deviation；
Step 3: the installation of bus rod:
1. with crane, jack or manpower, bus rod is lifted to installation site；
2. the interim lifting suspension bracket made is arranged on roof or beam；Jack is installed on suspension bracket, then remittance
Stream bus jack binding solid firmly after lift；
3., when bus rod assembles, the installation site of one section of bus rod is first determined according to design drawing, the most section by section
Assemble；
4., after bonding jumper has connected, before raw material of not casting, use plastic sheeting parcel, prevent copper bar from aoxidizing, and keep
Cleaning；
After the most often having assembled a joint, the contact resistance of lap-joint to be measured；Again to measure the exhausted of bus rod after connection
Edge resistance, insulating resistance value should be greater than 50M Ω；
6. after bus rod assembles, the levelness of bus duct, linearity, perpendicularity are checked again for, to beyond allowing
Should being adjusted section by section of range of error so that it is levelness and perpendicularity deviation are not more than 1.5 ‰, and total length error is less than
20mm；
7. bus rod dish cabinet joint is attached with the mode being connected by being flexible coupling of dish cabinet leading-out terminal bus；
8. the connection between bus rod and equipment is for being flexible coupling；
Step 4: after whole loop bus rod has connected, needs to check phase sequence, checks A, B, C of bus
A, B, C phase being connected with dish cabinet whether one_to_one corresponding；
Step 5: after installation, the insulation resistance to whole loop bus rod is tested, its relative phase, relatively exhausted
Edge resistance is more than 50M Ω；
Step 6: the joint mold of bus rod:
1. according to the joint form of bus rod, select the pattern of perfusion mould, mould is installed to connecing of bus rod
On head；
2. ensure that mould and joint completely engage, it is to avoid during perfusion, raw material is from gap leakage；
3. prepare casting material, be stirred；
4. should keep the cleaning of joint and mould before perfusion, during perfusion, need to uniformly beat perfusion mould with rubber hammer so that it is
Adequately fill up joint；
5. utilize rubber hammer uniformly to beat perfusion mould so that it is the demoulding, and grind burr；
Step 7: the test of bus rod:
(1) megger test:
After last group joint has molded, after 24 hours are completely dried, the insulated electro to whole loop bus rod
Resistance is tested again, and its relative phase, insulation resistance relatively are more than 50M Ω；
(2) ac voltage withstanding test:
Whole loop bus rod does after installation ac voltage withstanding test, and 10kV bus test voltage is 42kV, the time
1min, without puncturing flashover.
The invention have the advantages that
The technique of the present invention is applicable to the installation of full mould casted middle voltage bus rod, step reasonable standard, can effectively protect
Card construction quality and safety, shorten the engineering time, improves efficiency of construction.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
Fig. 2 is that bus rod of the present invention lifts schematic diagram.
Fig. 3 is bus rod suspension bracket scheme of installation of the present invention.
Fig. 4 is bus rod support scheme of installation of the present invention.
In figure, 1-roof；2-wall house beam；3-setscrew；4-makes suspension bracket by oneself；5-jack；6-suspender belt；7-confluxes mother
Line；8-screw mandrel；9-insulator support；10-metal bracket；11-adjusting nut；12-bracing frame；13-ground.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The installation method of a kind of full mould casted middle voltage bus rod that the present invention relates to, prepares before will doing the construction of necessity,
Specifically include set-up procedure:
One, preparation of construction:
1, to place and the requirement of equipment:
1. before bus rod is installed, thoroughly cleaning indoor sanitation, door and window and reserving hole are tight-closed, prevent ash
Dirt or sand and dust etc. enter indoor, otherwise will affect bus installation quality.
2., before bus rod is installed, roof, floor slab construction are complete, must not seepage；Flooring construction should terminate substantially, room
Interior raceway groove should be without hydrops, foreign material；Built-in fitting and preformed hole should meet design requirement；Door and window should install；All of patcher
Make complete, should clean up.
3. before bus rod is installed, the electrical equipment (switch cubicle, transformator etc.) being connected with bus should install, and inspection
It is qualified to test, and possesses bus mounting condition.
2, the requirement to workmen:
1. for ensureing the correct of erection sequence and installation quality, bus installation personnel should be by the full-time staff through Special Training
It is responsible for carrying out, and by producer's technical staff's on-the-spot guidance and supervision.
2., before bus rod is installed, organize all workmens to carry out technical training and study, be familiar with description and construction
Technology requirement in drawing, and carry out safe practice and tell somebody what one's real intentions are.
3. before bus rod is installed, perform personnel's division of labor, fulfil down to everyone, and have special messenger to be responsible for.
3, the requirement to construction equipment, instrument and material:
1. before bus rod is installed, should be according to on-site actual situations and technology requirement, the equipment needed for preparation, instrument, instrument
Instruments and meters, material and interim safety devices.
2., before bus rod is installed, should conscientiously check whether crane gear, hoisting rig etc. meet safety requirements, it is ensured that hang
The safety of dress transport is carried out.
Two, the inspection before installing:
Each loop bus rod is to be saved by one to be formed by connecting, and must enter each joint bus rod in a pre-installation
Row checks, its scope of examination mainly includes visual examination, phase shift inspection, megger test, ac voltage withstanding test etc..
1, visual examination:
1. bus rod model, specification meet design and product order requirement.
2. bus rod outward appearance should without substantially damage, each segment number mark is clear, adnexa is complete, case surface without deformation,
Flawless, free from admixture.
3. bus rod overlapping splice face is smooth, and coating attachment is complete, without the phenomenon such as peeling and pitted skin, connecting hole symmetry,
Isolated edge distance is consistent.
2, phase shift inspection:
Before installing, the phase place to bus rod checks, checks that every section of bus is distinguished with or without phase sequence, and carries out installation mark
Know, in order to install.
3, megger test:
Before installing testing the insulation resistance of every section of bus rod, its relative phase, insulation resistance relatively should be big
In 50M Ω.
4, ac voltage withstanding test:
Every section of bus rod does before installing ac voltage withstanding test, and 10kV bus test voltage is 42kV, time 1min,
Should be without puncturing flashover.
Preparation starts the installation of bus rod after completing, following steps realize:
Step one: the location of bus rod:
Bus rod must carry out the precise positioning of bus rod before installing, location guarantee confluxes mother the most accurately
The installation smoothly of line.The location of bus rod is usually the original position from bus rod and starts location, because bus rod
Dish joint be finally intended to be attached with switch cubicle or main transformer, the location of bus rod uses following three kinds of modes:
(1) straight line localization: first, finds out the central point connecting equipment bus leading-out terminal needed for two；Secondly, according to female
The central point of line leading-out terminal, utilizes infrared level gauge that two central points connect i.e. bus centrage into a line, and carries out mark；
(2) turning location: the location at turning is more complicated difficulty, in strict accordance with the turning of layout design during construction
Location positioning, it is fixed to measure according to the central point (bus leading-out terminal central point) of equipment at the indoor absolute altitude and of civil engineering
Position；
(3) location through walls: the location at place through walls relies on the bus having had good positioning to carry out location and installation, dodges process duct outside room
Line and house crossbeam, column；
Step 2: the interim fabrication and installation lifting suspension bracket:
(1) bracing frame uses angle steel, channel-section steel, full thread suspension rod and band steel to make, and uses " one " font, " L " type, " U " word
Type or the pattern of " T " font, processing dimension maximum error 5mm；On bracing frame, boring uses bench drill or electric hand drill, and aperture is not more than
Fixing diameter of bolt 2mm；
(2) according to the technology requirement of bus producer, have to be larger than between bus rod and metal pernetti 8cm safety away from
From, therefore insulator support is installed: first, 8# channel-section steel is cut into the pipe nipple of 600mm, as metal between bus rod and support
Bracket；Secondly, measure the position borings such as 170mm and 280mm respectively to both sides from the center of channel-section steel；Finally, insulator support is led to
Cross galvanized bolt to be fixed on channel-section steel；
(3) installation of suspension bracket:
Straightway suspension bracket is installed with reference to bus position of center line mark, and the bus bar cupport made positions
Install.It is that employing tube expansion is fixed to roof screw mandrel installation or expansion bolt is fixed to roof screw mandrel and installs, Wo Menxuan that suspension bracket is installed
The mode installed with tube expansion.
1. centered by the bus centrage mark having good positioning, measure 280mm to both sides respectively carry out mark boring；
2. utilizing electric hammer to carry out in the mark position on roof boring Φ 10 hole, hole depth is about 50mm, is arranged in hole by tube expansion,
Again screw mandrel is fixed in tube expansion, then screw mandrel is tightened；
3. by the integral installation of prefabricated insulator support and channel-section steel on screw mandrel, suspension bracket two screw mandrels of application, Gu
Fixed firm, suspension bracket application double nut clamps；
4. continue every 2 meters of positions, suspension bracket to be installed in the same way, can suitably increase at turning or excessively wall
Suspension bracket；
When turning with position mounting suspension through walls, the distance of screw mandrel and bus is not less than 8cm, remaining step and straightway
Unanimously；
The step that turning position installs relatively straight line segment the most difficult with the installation of position through walls is, determining of wall both sides
Position.It is noted that bus dish joint and switch cubicle (main incoming line cabinet or standby incoming line cabinet) or the bus of transformator during location
The connection of leading-out terminal.Because the connection between bus is all bolted, bolt connect higher to required precision, therefore this
A little to attach great importance to.
(4) installation of bracing frame:
Position and pattern are set comprehensively should the determining according to design drawing, product technology file and on-the-spot reality of bracing frame.
Topping out, after indoor ground floor constructed or had determined that ground elevation, site clearing, interfloor distance are checked, ability
Determine that support arranges position.It is that the insulator support of bus rod and the integral installation of channel-section steel are fixed on bracing frame that bracing frame is installed
On, it is simple much that this kind of mounting means compares suspension bracket mounting means, has main steps that:
1. mark centered by the bus centrage mark having good positioning；
2. using the overall center of the insulator support made and channel-section steel and bus centrage as a central point；
3. by the integral solder of insulator support and channel-section steel on bracing frame top；
4. continue every 2 meters of positions, bracing frame to be installed in the same way, suitably increase at turning or excessively wall and prop up
Support；
5., when bracing frame uses expansion bolt to fix, expansion bolt fixed support is no less than two, and expansion bolt adds plain cushion
And spring pad；
6. when bracing frame and embedded iron parts use and are welded and fixed, support weld brush antifouling paint；
7. bracing frame spacing is uniform, and levelness meets the requirement of bus duct levelness deviation；
Step 3: the installation of bus rod:
Owing to bus rod is heavier, the installation difficulty of bus rod is bigger, must carry out in detail the most in a pre-installation
Planning, it is ensured that bus rod safty hoisting is to installation site.
1. with crane, jack or manpower, bus rod is lifted to installation site；
2. the interim lifting suspension bracket made is arranged on roof or beam；Jack is installed on suspension bracket, then remittance
Stream bus jack binding solid firmly after lift；
3., when bus rod assembles, the installation site of one section of bus rod is first determined according to design drawing, the most section by section
Assemble；
4., after bonding jumper has connected, before raw material of not casting, use plastic sheeting parcel, prevent copper bar from aoxidizing, and keep
Cleaning；
After the most often having assembled a joint, the contact resistance of lap-joint to be measured；Again to measure the exhausted of bus rod after connection
Edge resistance, insulating resistance value should be greater than 50M Ω；
6. after bus rod assembles, the levelness of bus duct, linearity, perpendicularity are checked again for, to beyond allowing
Should being adjusted section by section of range of error so that it is levelness and perpendicularity deviation are not more than 1.5 ‰, and total length error is less than
20mm；
7. bus rod dish cabinet joint is attached with the mode being connected by being flexible coupling of dish cabinet leading-out terminal bus；
8. the connection between bus rod and equipment is for being flexible coupling；
9. after bus rod installs, tackle it and check comprehensively, and clear up foreign material about.
Step 4: after whole loop bus rod has connected, needs to check phase sequence, checks A, B, C of bus
A, B, C phase being connected with dish cabinet whether one_to_one corresponding；
Step 5: after installation, the insulation resistance to whole loop bus rod is tested, its relative phase, relatively exhausted
Edge resistance should be greater than 50M Ω；
Step 6: the joint mold of bus rod:
1. according to the joint form of bus rod, select the pattern of perfusion mould, mould is installed to connecing of bus rod
On head；
2. ensure that mould and joint completely engage, it is to avoid during perfusion, raw material is from gap leakage；
3. prepare casting material, be stirred；
4. should keep the cleaning of joint and mould before perfusion, during perfusion, need to uniformly beat perfusion mould with rubber hammer so that it is
Adequately fill up joint；
5. utilize rubber hammer uniformly to beat perfusion mould so that it is the demoulding, and grind burr；
Step 7: the test of bus rod:
(1) megger test:
After last group joint has molded, after 24 hours are completely dried, the insulated electro to whole loop bus rod
Resistance is tested again, and its relative phase, insulation resistance relatively should be greater than 50M Ω；
(2) ac voltage withstanding test:
Whole loop bus rod does after installation ac voltage withstanding test, and 10kV bus test voltage is 42kV, the time
1min, without puncturing flashover.
Finally, the energising of bus rod to be carried out trail run:
1. changed into switchhouse has reached power transmission condition, civil engineering and decorative engineering and Other Engineering all completes, and cleans out.
2. comprehensively arranging confluxing, clean up, joint is completely embedded, and phase sequence is correct.
3. before bus rod power transmission, answering entirety to measure the insulation resistance of bus, its insulating resistance value should be greater than 50M Ω；With
Bus rod connects equipment and line installs, and insulation is good, and makes a record.
4. bus insulation resistance test and AC power frequency pressure test qualified after, can be energized trail run.Power transmission zero load is transported
Row 24h phenomenon without exception, handles examination formality.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And the conversion of any equivalence that technical solution of the present invention is taked, the claim being the present invention is contained.
Claims (1)
1. the installation method of full mould casted middle voltage bus rod, it is characterised in that:
Realized by following steps:
Step one: the location of bus rod:
The location of bus rod starts location from the original position of bus rod, and the location of bus rod uses following three kinds of sides
Formula:
(1) straight line localization: first, finds out the central point connecting equipment bus leading-out terminal needed for two；Secondly, go out according to bus
The central point of line end, utilizes infrared level gauge that two central points connect i.e. bus centrage into a line, and carries out mark；
(2) turning location: position according to the turning position of layout design, according to the mother of equipment at the indoor absolute altitude and of civil engineering
Line leading-out terminal central point measures location；
(3) location through walls: the location at place through walls relies on the bus had good positioning to carry out location and installation, dodge outside room process pipelines with
And house crossbeam, column；
Step 2: the interim fabrication and installation lifting suspension bracket:
Interim lifting suspension bracket includes bracing frame, insulator support, metal bracket and suspension bracket:
(1) bracing frame uses angle steel, channel-section steel, full thread suspension rod and band steel to make, use " one " font, " L " type, " U " font or
The pattern of " T " font, processing dimension maximum error 5mm；On bracing frame, boring uses bench drill or electric hand drill, and aperture is not more than fixing
Diameter of bolt 2mm；
(2) 8# channel-section steel is cut into the pipe nipple of 600mm, as metal bracket；Measure 170mm respectively to both sides from the center of channel-section steel
With the boring of the position such as 280mm；Finally, insulator support is fixed on channel-section steel by galvanized bolt；
(3) installation of suspension bracket:
1. centered by the bus centrage mark having good positioning, measure 280mm to both sides respectively carry out mark boring；
2. utilizing electric hammer to carry out in the mark position on roof boring Φ 10 hole, hole depth is about 50mm, is arranged in hole by tube expansion, then will
Screw mandrel is fixed in tube expansion, is then tightened by screw mandrel；
3. by the integral installation of prefabricated insulator support and channel-section steel on screw mandrel, suspension bracket two screw mandrels of application, fix tightly
Gu, suspension bracket application double nut clamps；
4. continue every 2 meters of positions, suspension bracket to be installed in the same way, at turning or excessively wall, increase suspension bracket；
When turning with position mounting suspension through walls, the distance of screw mandrel and bus is not less than 8cm, and remaining step is consistent with straightway；
(4) installation of bracing frame:
It is the insulator support of bus rod and the integral installation of channel-section steel to be fixed on bracing frame that bracing frame is installed, key step
It is:
1. mark centered by the bus centrage mark having good positioning；
2. using the overall center of the insulator support made and channel-section steel and bus centrage as a central point；
3. by the integral solder of insulator support and channel-section steel on bracing frame top；
4. continue every 2 meters of positions, bracing frame to be installed in the same way, at turning or excessively wall, increase bracing frame；
5., when bracing frame uses expansion bolt to fix, expansion bolt fixed support is no less than two, and expansion bolt adds plain cushion and bullet
Spring pad；
6. when bracing frame and embedded iron parts use and are welded and fixed, support weld brush antifouling paint；
7. bracing frame spacing is uniform, and levelness meets the requirement of bus duct levelness deviation；
Step 3: the installation of bus rod:
1. with crane, jack or manpower, bus rod is lifted to installation site；
2. the interim lifting suspension bracket made is arranged on roof or beam；Jack is installed on suspension bracket, then mother of confluxing
The binding of line jack solid firmly after lift；
3., when bus rod assembles, first determine the installation site of one section of bus rod according to design drawing, carry out the most section by section
Assemble；
4., after bonding jumper has connected, before raw material of not casting, use plastic sheeting parcel, prevent copper bar from aoxidizing, and keep cleaning；
After the most often having assembled a joint, the contact resistance of lap-joint to be measured；Again to measure the insulated electro of bus rod after connection
Resistance, insulating resistance value should be greater than 50M Ω；
6., after bus rod assembles, the levelness of bus duct, linearity, perpendicularity are checked again for, to beyond allowable error
Should being adjusted section by section of scope so that it is levelness and perpendicularity deviation are not more than 1.5 ‰, total length error is less than 20mm；
7. bus rod dish cabinet joint is attached with the mode being connected by being flexible coupling of dish cabinet leading-out terminal bus；
8. the connection between bus rod and equipment is for being flexible coupling；
Step 4: after whole loop bus rod has connected, needs to check phase sequence, check bus A, B, C phase with
A, B, C phase that dish cabinet connects whether one_to_one corresponding；
Step 5: after installation, the insulation resistance to whole loop bus rod is tested, its relative phase, insulated electro relatively
Resistance is more than 50M Ω；
Step 6: the joint mold of bus rod:
1. according to the joint form of bus rod, select the pattern of perfusion mould, mould is installed on the joint of bus rod；
2. ensure that mould and joint completely engage, it is to avoid during perfusion, raw material is from gap leakage；
3. prepare casting material, be stirred；
4. should keep the cleaning of joint and mould before perfusion, during perfusion, need to uniformly beat perfusion mould with rubber hammer so that it is fully
Fill up joint；
5. utilize rubber hammer uniformly to beat perfusion mould so that it is the demoulding, and grind burr；
Step 7: the test of bus rod:
(1) megger test:
Last group is after joint molded, after 24 hours are completely dried, to the insulation resistance of whole loop bus rod again
Secondary testing, its relative phase, insulation resistance relatively are more than 50M Ω；
(2) ac voltage withstanding test:
Whole loop bus rod does after installation ac voltage withstanding test, and 10kV bus test voltage is 42kV, time 1min,
Without puncturing flashover.
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| CN201410399689.XA CN104134959B (en) | 2014-08-14 | 2014-08-14 | The installation method of full mould casted middle voltage bus rod |
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| CN108242791B (en) * | 2017-08-07 | 2024-04-09 | 浩翔电气集团有限公司 | Wind power bus installation method |
| CN117214630A (en) * | 2023-09-25 | 2023-12-12 | 镇江加勒智慧电力科技股份有限公司 | Bus duct insulation performance evaluation method and system |
| CN117791882B (en) * | 2024-01-08 | 2024-08-27 | 中国水利水电第三工程局有限公司 | AC excitation system equipment installation process of double-feed variable-speed pumped storage unit |
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| JP5139336B2 (en) * | 2009-01-19 | 2013-02-06 | 共同カイテック株式会社 | Waterproof branch structure of vertical laying bus duct and its assembling method |
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| CN104134959A (en) | 2014-11-05 |
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