1 scope
Under the technology standard is suitable for use in 0.4 kV indoor general industrial and civil building sealing plug busbar installation of electrical installation engineering.
2 construction preparation
2.1 equipment and materials requirements:
2.1.1 splice, closed busbar shall have the factory quality certificate, installation technical documents. Technical documents shall include rated voltage, rated capacity, test reports and other technical data. Type, specification, voltage grade, should meet the design requirements.
2.1.2 of various specifications of steel should be no obvious corrosion, CARDS, all kinds of bolts, washers should comply with the design requirements, should be hot dip galvanized products.
2.1.3 other materials: anticorrosive paint, paint, such as welding electrode should be the factory certificate.
2.2 the main equipment:
2.2.1 main machines: table, table vice, hacksaw, hammer, hydraulic simmer bending machine, electric drill, electric hammer, electric welding machine, torque wrench and so on.
2.2.2 testing tools: steel square, steel tape, spirit level, insulation shaking table and so on.
2.3 operation conditions
2.3.1 the product technical documents and construction drawings is complete.
2.3.2 splice, closed busbar installation parts of the building decoration engineering all over. Warm ventilation engineering installation.
2.3.3 electric equipment (transformer, switchgear, etc.), the installation and inspection.
3 operation process
3.1 process:
Equipment point check pieces to support production and installation, sealing plug bus bar installation and commissioning acceptance
3.2 equipment point check:
3.2.1 out some pieces of test equipment, installation unit, the construction unit or the supply unit together, and make records.
3.2.2 according to the packing list to check the equipment and accessories, its specification, quantity, variety should comply with the design requirements.
3.2.3 inspection equipment and accessories, segmented logo should be clear and complete, no damage deformation appearance, bus insulation resistance in accordance with the design requirements.
3.2.4 inspection found that do not meet the requirements of design and quality equipment and accessories, must be properly handled, again after design approval for installation.
3.3 support production and installation should be according to the design and the regulation of product technical document production and installation, such as design and product technical documents without regulation, according to the requirements of the following production and installation;
3.3.1 stent production:
3.3.1.1 according to the structure types of construction site, Angle or channel steel should be adopted. Should use the word "one", "L" type, "" word," T "type of four types.
3.3.1.2 stents processed according to the selected model, measuring good size cutting, cutting gas welding cutting is forbidden, maximum error processing size 5 mm.
3.3.1.3 simmer bending of steel frame should be the vise with a hammer forging, also can use hydraulic bend simmer for mould system.
3.3.1.4 on bench drill or hand electric drill hole drilling application, shall not be gas cutting hole, aperture fixed bolt diameter may not be greater than 2 mm.
3.3.1.5 screw set clasp, application set of silk machine or set of silk plate processing, no broken wires.
3.3.2 rainfall distribution on 10-12 bracket installation:
3.3.2.1 splice busbar bend and close and box (plate) joint must be added support. Straight segments splice busbar support distance should not be greater than 2 m.
3.3.2.2 buried note stents with cement mortar, contrast ratio 1:3. And over 425 cement, should note the grey full, sealed, no higher than that of metope, buried depth of not less than 80 mm.
3.3.2.3 expansion bolt support not less than two. A hanger used two derrick, fixed firmly, 2 ~ 4 exposed screw clasp, expansion bolts should add flat washer and spring cushion, hanger used double nut clamping.
3.3.2.4 stents and brush up with welding place anticorrosive paint should be uniform, without brush, do not pollute the buildings.
3.4 enclosed bus bar installation:
3.4.1 track general requirements:
3.4.1.1 splicing, closed busbar shall, in accordance with the provisions of technical documents according to the design and production for assembly, assembly before the determination of insulation resistance should be made for each measurement results should comply with the design requirements, and make records.
3.4.1.2 bus duct, fixed distance shall not be more than 2.5 m. Run level distance should be not less than 2.2 m.
3.4.1.3 the end of the bus duct should be packed closed hood (FIG. 2-46), paragraphs of the shell that bus duct connection shall be removable and shell have a line across the ground, between both ends should be reliable grounding.
3.4.1.4 straight busbar and equipment connection using soft connection (FIG. 2-47). Bus bar fastening bolts shall be supplied by manufacturers supporting, application of torque wrench fastening.
3.4.2 bus duct mounted horizontally along the wall (FIG. 2-48). Installation height should meet the design requirements, no requirement should not be from less than 2.2 m, reliable bus bar should be fixed on the bracket.
Rule 3.4.3 bus duct suspension hoisting. (FIG. 2-49, figure 2-50) boom should be adapted to the bus duct weight diameter, nut should be able to adjust.
3.4.4 enclosed bus floor installation (FIG. 2-51). Installation height should be in accordance with the design requirements, design requirements, shall conform to the requirements of the specification. Steel or steel pipe column can be used.
3.4.5 vertical enclosed bus bar installation. Along a wall or a post office, should be fixed bracket, the roof should be equipped with shockproof device, and make the waterproof platform (FIG. 2-52).
3.4.6 enclosed bus bar installation length more than 40 m, should be set expansion joints, across the structure of the expansion joints and settlement joints, appropriate adaptation measures (FIG. 2-53), equipment order, put forward the request.
3.4.7 enclosed bus bar installation of connection box should be reliable fixation, vertical installation, the installation height should meet the design requirements, design requirements, plug the mouth should be at the bottom of 1.4 m (FIG. 2-54).
3.4.8 vertical enclosed bus bar installation is apart from the ground 1.8 m protection measures should be taken under the special shaft (electrical, transformer room, electrical room, except for such technology layer).
3.4.9 enclosed bus bar through the firewall, fire prevention floor, fire prevention isolation measures should be taken.
3.5 commissioning acceptance:
3.5.1 track of commissioning requirements: variable transformer room has reached the transmission conditions, construction and decoration engineering and other engineering all finished, and clean up. And plug type bus connecting device and wire installed, good insulation.
3.5.2 to overall arrangement of enclosed bus bar, clean, connection joint closely, phase sequence is correct, enclosure grounding is good. Insulation test comply with the design requirements, and make records.
3.5.3 power no-load operation 24 h no abnormal phenomenon, the acceptance formalities, the construction unit to use, and at the same time submit the acceptance.
3.5.4 acceptance data including: commissioning acceptance certificate, change regarding the record, product quality certificate, manuals, test records, operation records, etc.
4 quality standards
4.1 ensure projects:
4.4.1 splice, closed busbar enclosure ground wire tightly, without omission, bus insulation resistance meet the design requirements.
Methods: to observe the inspection and check the insulation test records.
4.1.2 splice, closed busbar connection must meet specification requirements and product technical document regulations.
Inspection method: to observe the inspection and inspection documents.
4.2 the basic items:
2 support installation position should be correct, horizontal flat vertical, fixed firmly, rows installation, should be neat, uniform spacing, uniform paint, brush without leakage.
Inspection method: to observe the examination.
4.2.2 closed and fixed position is assembled with infixing bus right, fixed firmly, horizontal rows, rows installation should be neat, uniform spacing, convenient for maintenance.
Inspection method: to observe the examination.
4.3 allowable deviation project are shown in table 2-20.
Closed splice bus bar installation allowable deviation table 2-20
Will project allow deviation (mm) test method
1
2
3 two meters period of vertical
The vertical (according to the floor)
Four row spacing (each segment)
5
5
The measured, view the record
5 finished product protection
5.1 sealing plug bus bar installation, temporarily cannot send operation, the site set up obvious signs, in case of damage.
5.2 sealing plug busbar installation, if you have any other type of work assignments to splice, closed busbar protection, so as to avoid damage.
6 should pay attention to quality problems
6.1 sealing plug the quality problem of the bus bar installation should be paid attention to are shown in table 2-21.
7 should possess the quality of the record
7.1 product certification.
Often quality problems and control measures of the table 2-21
The quality problem of the serial number often produce for prevention measures
Out of the inventory carefully, will be missing parts, damaged parts make good list, with suppliers to talk things over solve, strengthen custody
2 missing the grounding line and the connection is not tight, tight measures seriously homework, strengthening self-inspection, mutual inspection and ZhuanJian
3 brush paint missing other equipment bracket strengthening self-inspection, mutual inspection and pollution to other type of work of the finished product, carefully protected
7.2 equipment material inspection records.
7.3 insulation shake test record.
7.4 since the inspection records.
7.5 preview records.
7.6 quality evaluation records.
7.7 design changes regarding the record.
Under the technology standard is suitable for use in 0.4 kV indoor general industrial and civil building sealing plug busbar installation of electrical installation engineering.
2 construction preparation
2.1 equipment and materials requirements:
2.1.1 splice, closed busbar shall have the factory quality certificate, installation technical documents. Technical documents shall include rated voltage, rated capacity, test reports and other technical data. Type, specification, voltage grade, should meet the design requirements.
2.1.2 of various specifications of steel should be no obvious corrosion, CARDS, all kinds of bolts, washers should comply with the design requirements, should be hot dip galvanized products.
2.1.3 other materials: anticorrosive paint, paint, such as welding electrode should be the factory certificate.
2.2 the main equipment:
2.2.1 main machines: table, table vice, hacksaw, hammer, hydraulic simmer bending machine, electric drill, electric hammer, electric welding machine, torque wrench and so on.
2.2.2 testing tools: steel square, steel tape, spirit level, insulation shaking table and so on.
2.3 operation conditions
2.3.1 the product technical documents and construction drawings is complete.
2.3.2 splice, closed busbar installation parts of the building decoration engineering all over. Warm ventilation engineering installation.
2.3.3 electric equipment (transformer, switchgear, etc.), the installation and inspection.
3 operation process
3.1 process:
Equipment point check pieces to support production and installation, sealing plug bus bar installation and commissioning acceptance
3.2 equipment point check:
3.2.1 out some pieces of test equipment, installation unit, the construction unit or the supply unit together, and make records.
3.2.2 according to the packing list to check the equipment and accessories, its specification, quantity, variety should comply with the design requirements.
3.2.3 inspection equipment and accessories, segmented logo should be clear and complete, no damage deformation appearance, bus insulation resistance in accordance with the design requirements.
3.2.4 inspection found that do not meet the requirements of design and quality equipment and accessories, must be properly handled, again after design approval for installation.
3.3 support production and installation should be according to the design and the regulation of product technical document production and installation, such as design and product technical documents without regulation, according to the requirements of the following production and installation;
3.3.1 stent production:
3.3.1.1 according to the structure types of construction site, Angle or channel steel should be adopted. Should use the word "one", "L" type, "" word," T "type of four types.
3.3.1.2 stents processed according to the selected model, measuring good size cutting, cutting gas welding cutting is forbidden, maximum error processing size 5 mm.
3.3.1.3 simmer bending of steel frame should be the vise with a hammer forging, also can use hydraulic bend simmer for mould system.
3.3.1.4 on bench drill or hand electric drill hole drilling application, shall not be gas cutting hole, aperture fixed bolt diameter may not be greater than 2 mm.
3.3.1.5 screw set clasp, application set of silk machine or set of silk plate processing, no broken wires.
3.3.2 rainfall distribution on 10-12 bracket installation:
3.3.2.1 splice busbar bend and close and box (plate) joint must be added support. Straight segments splice busbar support distance should not be greater than 2 m.
3.3.2.2 buried note stents with cement mortar, contrast ratio 1:3. And over 425 cement, should note the grey full, sealed, no higher than that of metope, buried depth of not less than 80 mm.
3.3.2.3 expansion bolt support not less than two. A hanger used two derrick, fixed firmly, 2 ~ 4 exposed screw clasp, expansion bolts should add flat washer and spring cushion, hanger used double nut clamping.
3.3.2.4 stents and brush up with welding place anticorrosive paint should be uniform, without brush, do not pollute the buildings.
3.4 enclosed bus bar installation:
3.4.1 track general requirements:
3.4.1.1 splicing, closed busbar shall, in accordance with the provisions of technical documents according to the design and production for assembly, assembly before the determination of insulation resistance should be made for each measurement results should comply with the design requirements, and make records.
3.4.1.2 bus duct, fixed distance shall not be more than 2.5 m. Run level distance should be not less than 2.2 m.
3.4.1.3 the end of the bus duct should be packed closed hood (FIG. 2-46), paragraphs of the shell that bus duct connection shall be removable and shell have a line across the ground, between both ends should be reliable grounding.
3.4.1.4 straight busbar and equipment connection using soft connection (FIG. 2-47). Bus bar fastening bolts shall be supplied by manufacturers supporting, application of torque wrench fastening.
3.4.2 bus duct mounted horizontally along the wall (FIG. 2-48). Installation height should meet the design requirements, no requirement should not be from less than 2.2 m, reliable bus bar should be fixed on the bracket.
Rule 3.4.3 bus duct suspension hoisting. (FIG. 2-49, figure 2-50) boom should be adapted to the bus duct weight diameter, nut should be able to adjust.
3.4.4 enclosed bus floor installation (FIG. 2-51). Installation height should be in accordance with the design requirements, design requirements, shall conform to the requirements of the specification. Steel or steel pipe column can be used.
3.4.5 vertical enclosed bus bar installation. Along a wall or a post office, should be fixed bracket, the roof should be equipped with shockproof device, and make the waterproof platform (FIG. 2-52).
3.4.6 enclosed bus bar installation length more than 40 m, should be set expansion joints, across the structure of the expansion joints and settlement joints, appropriate adaptation measures (FIG. 2-53), equipment order, put forward the request.
3.4.7 enclosed bus bar installation of connection box should be reliable fixation, vertical installation, the installation height should meet the design requirements, design requirements, plug the mouth should be at the bottom of 1.4 m (FIG. 2-54).
3.4.8 vertical enclosed bus bar installation is apart from the ground 1.8 m protection measures should be taken under the special shaft (electrical, transformer room, electrical room, except for such technology layer).
3.4.9 enclosed bus bar through the firewall, fire prevention floor, fire prevention isolation measures should be taken.
3.5 commissioning acceptance:
3.5.1 track of commissioning requirements: variable transformer room has reached the transmission conditions, construction and decoration engineering and other engineering all finished, and clean up. And plug type bus connecting device and wire installed, good insulation.
3.5.2 to overall arrangement of enclosed bus bar, clean, connection joint closely, phase sequence is correct, enclosure grounding is good. Insulation test comply with the design requirements, and make records.
3.5.3 power no-load operation 24 h no abnormal phenomenon, the acceptance formalities, the construction unit to use, and at the same time submit the acceptance.
3.5.4 acceptance data including: commissioning acceptance certificate, change regarding the record, product quality certificate, manuals, test records, operation records, etc.
4 quality standards
4.1 ensure projects:
4.4.1 splice, closed busbar enclosure ground wire tightly, without omission, bus insulation resistance meet the design requirements.
Methods: to observe the inspection and check the insulation test records.
4.1.2 splice, closed busbar connection must meet specification requirements and product technical document regulations.
Inspection method: to observe the inspection and inspection documents.
4.2 the basic items:
2 support installation position should be correct, horizontal flat vertical, fixed firmly, rows installation, should be neat, uniform spacing, uniform paint, brush without leakage.
Inspection method: to observe the examination.
4.2.2 closed and fixed position is assembled with infixing bus right, fixed firmly, horizontal rows, rows installation should be neat, uniform spacing, convenient for maintenance.
Inspection method: to observe the examination.
4.3 allowable deviation project are shown in table 2-20.
Closed splice bus bar installation allowable deviation table 2-20
Will project allow deviation (mm) test method
1
2
3 two meters period of vertical
The vertical (according to the floor)
Four row spacing (each segment)
5
5
The measured, view the record
5 finished product protection
5.1 sealing plug bus bar installation, temporarily cannot send operation, the site set up obvious signs, in case of damage.
5.2 sealing plug busbar installation, if you have any other type of work assignments to splice, closed busbar protection, so as to avoid damage.
6 should pay attention to quality problems
6.1 sealing plug the quality problem of the bus bar installation should be paid attention to are shown in table 2-21.
7 should possess the quality of the record
7.1 product certification.
Often quality problems and control measures of the table 2-21
The quality problem of the serial number often produce for prevention measures
Out of the inventory carefully, will be missing parts, damaged parts make good list, with suppliers to talk things over solve, strengthen custody
2 missing the grounding line and the connection is not tight, tight measures seriously homework, strengthening self-inspection, mutual inspection and ZhuanJian
3 brush paint missing other equipment bracket strengthening self-inspection, mutual inspection and pollution to other type of work of the finished product, carefully protected
7.2 equipment material inspection records.
7.3 insulation shake test record.
7.4 since the inspection records.
7.5 preview records.
7.6 quality evaluation records.
7.7 design changes regarding the record.
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