1 scope
The technology standard is applicable to shape under 10 kv bus bar installation.
2 construction preparation
2.1 material requirements:
2.1.1 copper, aluminum bus bar should have qualified products and material proof, and conform to the requirements of table 2 to 11.
2.1.2 generatrix surface should be bright and clean level off, should not have crack, wrinkle, inclusion and deformation and distortions.
2.1.3 porcelain insulator and wear casing wall, should comply with the national standards and regulations on electric porcelain product technical conditions, and the product certificate.
2.1.4 model, specification and voltage grade of the insulating material shall meet the design requirements. No damage and crack appearance, good insulation.
The mechanical properties of the busbar and resistivity table 2 to 11
Name of busbar busbar type minimum tensile strength
(N/was) minimum elongation
Biggest resistivity (%) of 20 ℃
(Ω, was/m)
Copper TMY mother line 255 0.01777 6
Aluminium wire LMY 3 0.0290 115
2.1.5 metal fasteners and fixture, all should be hot dip galvanized parts.
2.1.6 other accessories have mixed paint, ZhangDanChi, welding rod, welding powder, etc.
2.2 the main equipment:
2.2.1 busbar steam heat bending, welding, welding tools, hacksaw, electric hammer, grinding wheel, bench drill, drill, flat file, wire brush, wooden hammer, torque wrench, brass wire brush.
2.2.2 test instruments, tape measure, steel tape, steel ruler, level drops, line, shaking table, multimeter, fine steel wire or string cable.
2.3 construction conditions:
2.3.1 bus bar installation for civil engineering requirements: the roof leaks, walls shotcrete and site clean up, and have certain processing. The work high above the scaffolding, and qualified safety technical department. The doors and Windows is complete.
2.3.2 electrical equipment installation, inspection.
2.3.3 reserved holes and embedded parts size and strength are comply with the design requirements.
2.3.4 construction drawing and technical data is complete.
3 operation process
3.1 process:
Alignment measurement to stent and tension device production installation, the insulator installation - busbar processing - busbar connection - >
The bus bar installation - bus painting brush oil - check the sending
3.2 the feeding measures:
3.2.1 into the scene according to the different situation of bus bar and bracket installation, check whether match the drawings.
3.2.2 alignment measurements: check the length along the bus bar installation direction without obstacles, to building structures or equipment pipeline crossover phenomenon, such as ventilation installation components.
3.2.3 distribution ark busbar installation, measurement and other components on equipment safe distance is in accordance with the requirements.
3.2.4 pay-off measure the paragraphs busbar processing size, size, and underline or fixed installation distance and drawing hole of the support installation position.
3.3 support and the production of the tension device installation
3.3.1 busbar stent made of 50 * 50 * 5 Angle, expansion bolt is fixed on the wall (FIG. 2-37).
3.3.2 rainfall distribution on 10-12 busbar tension device according to the appended drawings production assembly (FIG. 2-38).
3.4 insulator installation:
3.4.1 track insulator before installation to measure insulation, insulation resistance value is greater than 1 megohm is qualified. Check the insulator appearance no crack and defect phenomenon, insulator perfusion of bolt, nut strong rear can use. 6 ~ 10 kv post insulator pressure test should be obtained before installation.
3.4.2 insulator a asbestos pad up and down to the mat.
Rule 3.4.3 insulator plate, made of card board specifications should be compatible with the specifications of the bus. The installation of the insulator splint, card board, be strong.
3.5 the busbar processing:
3.5.1 track of bus bar straightening and cutting off
3.5.1.1 bus bar straightening the mother with the straightening straightening machine, manual straightening must use wooden hammer, the following mat tie for work, not with a hammer.
3.5.1.2 bus cut can use hand saw sawing or wheel homework, with arc or acetylene shall not be cut.
3.5.2 busbar bending:
3.5.2.1 busbar bending application of special tools (busbar simmer bending) cold heat, bend shall not have cracks and significant buckling. Hot bending may be undertaken.
3.5.2.2 busbar bending and bending of ping (FIG. 2-39) bending radius should not be less than given in table 2 to 12.
3.5.2.3 busbar twisted, reversing the length of the part should not be less than 2.5 times ~ 5 times of the width of the bus (FIG. 2-40).
3.6 busbar connection:
Busbar connection can be used welding or bolt connection.
3.6.1 busbar welding:
3.6.1.1 welding position:
Weld the curve edge points or support insulator shall not be less than 50 mm, such as how the same phase bus bar, the weld should be staggered shall not be less than 50 mm.
The rectangle busbar minimum bending radius (R) value table 2 to 12
Bending mode bus bar section size minimum bending radius (mm)
Copper aluminum steel (mm)
Flat curved 50 x 5
125 x 10 2 h
2 h, 2 h
2.5 h to 2 h
2 h.
Bending 50 x 5
125 x 10 1 b
1.5 b 1.5 b
2 b 0.5 b
1 b
3.6.1.2 welding technical requirements:
The welding of aluminium and aluminium alloy bus should use argon arc welding, welding copper bus bar can use 20 l # and 202 #, 301 # brazing copper electrode powder or borax, to save material, also can use waste or scrap cable core instead of electrode wire core, but no corrosion, the surface should be smooth and shall wipe grease, before welding.
Should use wire brush to clean before welding bus bar groove in the oxide layer, the bus bar with refractory brick and cushion flat alignment, prevent hi-lo, groove place according to bus specification set aside 1 ~ 5 mm clearance, then the welder welding, weld line straight, not hi-lo, welding must be double. Should be raised with arc welding seam, strengthen height, upper should be 2 ~ 4 mm fillet height is 4 mm. Weld shall not have cracks, slag inclusion, incomplete fusion and bite meat, after the welding should be hot wash off with plenty of water flux.
3.6.1.3 welder, should be passed the examination. Bus after welding inspection should comply with the specification requirements.
3.6.2 busbar bolt connection:
3.6.2.1 busbar hole size and bolt specification see table 2-3.
3.6.2.2 rectangle busbar using bolt of lap joint, joint from the support of the post insulator plate edge should not be less than 50 mm; Piece on the bus bar end and the lower bus flat bend start distance should be not less than 50 mm (FIG. 2-41).
3.6.2.3 busbar and busbar busbar and branch line, busbar and electrical terminals lap, the lap surface must level off, clean and coated with electricity compound, and meet the following requirements.
A copper and copper: outdoor, high temperature and wet or the bus technicians to corrosive gases indoors, must be tin. In drying chamber can be directly connected.
Aluminum and aluminum b: direct connection.
Copper and aluminum: c in a dry indoor, tin copper bus bar in China, nearly 100% of indoor or outdoor air relative humidity, should use transition copper aluminum plate, copper side should be lining tin.
D steel and copper or aluminium: steel technicians to lap surface must be tin.
3.6.2.4 bus using bolt connection, flat washer should choose special thick washer, and must complete the trampoline. Bolt, flat washer and trampoline must use galvanized parts. Bolt length should be considered in the bolt fastening thread can reveal nut after 5 ~ 8 mm.
3.6.2.5 bus interface should be connected closely, torque wrench fastening connection bolt application, the fastening torque value should comply with the regulations of table 2-14.
3.7 the installation of busbar
3.7.1 bus bar installation should be smooth and beautiful, and bus bar installation:
Horizontal section: two support height error is not more than 3 mm, length is not more than 10 mm.
Vertical section: two vertical support point error is not more than 2 mm, length is not more than 5 mm.
Distance between: parallel spacing should be uniform, the error is not more than 5 mm.
3.7.2 bus bar installation as shown in figure 2-42 and the minimum safety distance table 2-15.
3.7.3 busbar support point spacing, the low voltage busbar shall not be greater than 900 mm, the high tension line shall not be greater than 1200 mm. Low voltage bus bar installation and vertical support point distance can't meet the requirements, shall be equipped with bus bar insulation splint (FIG. 2-43).
Indoor distribution equipment minimum safety net distance (mm) table 2-15
The rated voltage
1 ~ 3 kv 6 kv and 10 kv
Live part to the ground and between different phase live part (A) 75 100 100
Live part and the fence (B1) 825 825 875
Live part and the mesh covered column (B2), 175, 200, 225
Live part and the slab covered column (B3) 105 130 155
Naked column bare conductor and the ground (C) 2375 2400 2425
No naked with piecewise bar with bare conductor (D) 1875 1900 1900
Wire casing and the outdoor channel road (E) 4000 4000 4000
3.7.4 bus in support of fixed point: bus bar should be used for horizontal installation open wing clip, should be adopted for vertical installation of busbar busbar splint (FIG. 2-44).
Busbar is only allowed in the vertical section in the middle of the clamp on a pair of plywood, the same vertical section should have the rest of the plywood and bus bar between 1.5 ~ 2 mm gap.
3.7.5 wall partition installation method as shown in figure 2-45.
3.8 bus oil painting brush
3.8.1 busbar order and paint colors are shown in table 2-16-17, and table 2 brush paint should be uniform, neat, sank or contamination device shall not flow.
Bus phase permutation table 2-16
Bus phase arranged three line four lines
Level (by after-hours to disk)
Vertical (down)
Down lead (left to right) A, B, C
A - B - C
ABC A, B, C, O
A, B, C, O
ABCO
Bus painting table 2 to 17
Bus phase coating color bus phase coating color
A phase
B phase
C is yellow
green
red
Neutral (ground)
Neutral (ground)
The purple
Purple with black stripes
3.8.2 terminal equipment, busbar measures or clamp, plywood, Ming set ground connection screws in 10 ~ 15 mm on both sides and paint is not allowed.
3.9 check the sending:
3.9.1 bus after the installation, to full inspection, cleaning up the scene of the tools and sundry, and consultation with relevant unit personnel, unauthorized persons. Please leave.
Pressure test, 3.9.2 bus bar should be done before sending below 500 v bus can use 500 v shake table test, insulation resistance is not less than 0.5 M Ω.
3.9.3 power must have the specialist is responsible for, sending procedure should be first after high pressure, low pressure; After first trunk, branch; After isolating switch first load switch. Reverse power with the above order.
3.9.4 workshop bus should not hang up before sending electrical signs, and inform the relevant units and personnel shall have the light after sending.
4 quality standards
4.1 ensure projects:
4.4.1 high-voltage insulator and withstand voltage test of high pressure wear casing wall must comply with the rules and regulations of construction.
Inspection method: inspect pressure test records.
High voltage porcelain surface is strictly forbidden to 4.1.2 defects such as cracks, defects and damage of enamel.
Inspection method: to observe the examination.
4.1.3 busbar connection must meet the following requirements:
4.1.3.1 busbar contact compact connection, connection bolt tightening torque values conform to the state.
4.1.3.2 welding in the strengthening of welds is 2 ~ 4 mm height, joint on each side out 4 ~ 7 mm; Weld defects such as cracks, lack of penetration, residual flux was removed.
4.1.3.3 busbar lap of different metals, it accord with the rules and regulations of construction the lap surface treatment.
Methods: to observe the inspection and test or inspection installation records.
4.1.3.4 busbar bend in the forbidden gaps and cracks.
Inspection method: to observe the examination.
4.2 the basic items:
2 bus insulator and bracket installation shall meet the following requirements: position correctly, fixation, fixed bus with hardware is correct, complete, complete black metal stents corrosion.
Horizontal flat vertical, rows of neat rows, uniform spacing, the paint colour and lustre is uniform, insulator surface clean.
Inspection method: to observe the examination.
4.2.2 bus bar installation shall meet the following requirements:
4.2.2.1 straight and neat, color correct; Bus ride or move bolt and busbar stick hole size is correct.
4.2.2.2 maintain between the rectangle busbar pills more equal interval with the thickness of the bus, multichip bus bar in the middle of the fixed frame does not form a closed magnetic circuit; The tension device of workshop of low-pressure overhead busbar tension device fixation, with each busbar sag in a mutual difference is not greater than 10%.
Using screw threads are exposed nut 2 ~ 3 buttons; Take it busbar uniform coating is smooth; Trolley bus sag is consistent; Color coating evenly.
Inspection method: to observe the inspection and check the installation records.
4.2.2.3 bus bar grounding stents and other non charged metal parts (zero) feeder installation shall meet the following requirements:
Connect closely, and firm, choose correct grounding (zero) line section, anticorrosive parts of the paint evenly without omission. Line to the reasonable, color standard, after besmear is not contaminated equipment and buildings.
Inspection method: to observe the examination.
4.3 allow deviation, bending radius of bus bar installation and inspection method should comply with the regulations of table 2 to 18.
5 finished product protection
5.1 insulation porcelain should be properly kept, prevent bruising, has installed porcelain should not bear other stress, in case of damage.
5.2 modulated straight mother with the semi-finished products should be properly kept, may not be the place. Good mother with the installation should pay attention to protect, not collision, nor in the mother take place the weight.
5.3 substation room need secondary spray, mother with the cover with plastic cloth should be good.
5.4 bus bar installation in the doors and Windows installed and lock to prevent equipment damage.
6 should pay attention to quality problems
6.1 the quality problem of the bus bar installation should be paid attention to are shown in table 2-19.
Often produce the quality problems and control measures of table 2-19
The quality problem of the serial number often produce for prevention measures
1 all kinds of steel and other metal materials, paint, rust removing and uneven, with brush leakage 1. Strengthen the material management work, strengthening the work sense of responsibility; 2. Prepare the check
1. Complete tool preparation before construction, do not use steam electric welding cutting;
2. The construction of strengthening management to establish rewards and punishment system, strict inspection system
3
Busbar lap joint gap is too big, can't meet the requirements
1. The busbar voltage or move the gasket should conform to the requirements of the regulations, to thicken the gasket should be processed before the construction preparation stage; 2. The bus ride it (surface) using a flat file, file; 3. Carefully check
7 should possess the quality of the record
7.1 product certification.
7.2 the material inspection certificate.
7.3 equipment material inspection records.
7.4 preview records.
7.5 since the inspection records.
7.6 insulation shake test record.
7.7 pressure test report.
7.8 kinds of construction quality assessment record.
7.9 design changes regarding the record.
The technology standard is applicable to shape under 10 kv bus bar installation.
2 construction preparation
2.1 material requirements:
2.1.1 copper, aluminum bus bar should have qualified products and material proof, and conform to the requirements of table 2 to 11.
2.1.2 generatrix surface should be bright and clean level off, should not have crack, wrinkle, inclusion and deformation and distortions.
2.1.3 porcelain insulator and wear casing wall, should comply with the national standards and regulations on electric porcelain product technical conditions, and the product certificate.
2.1.4 model, specification and voltage grade of the insulating material shall meet the design requirements. No damage and crack appearance, good insulation.
The mechanical properties of the busbar and resistivity table 2 to 11
Name of busbar busbar type minimum tensile strength
(N/was) minimum elongation
Biggest resistivity (%) of 20 ℃
(Ω, was/m)
Copper TMY mother line 255 0.01777 6
Aluminium wire LMY 3 0.0290 115
2.1.5 metal fasteners and fixture, all should be hot dip galvanized parts.
2.1.6 other accessories have mixed paint, ZhangDanChi, welding rod, welding powder, etc.
2.2 the main equipment:
2.2.1 busbar steam heat bending, welding, welding tools, hacksaw, electric hammer, grinding wheel, bench drill, drill, flat file, wire brush, wooden hammer, torque wrench, brass wire brush.
2.2.2 test instruments, tape measure, steel tape, steel ruler, level drops, line, shaking table, multimeter, fine steel wire or string cable.
2.3 construction conditions:
2.3.1 bus bar installation for civil engineering requirements: the roof leaks, walls shotcrete and site clean up, and have certain processing. The work high above the scaffolding, and qualified safety technical department. The doors and Windows is complete.
2.3.2 electrical equipment installation, inspection.
2.3.3 reserved holes and embedded parts size and strength are comply with the design requirements.
2.3.4 construction drawing and technical data is complete.
3 operation process
3.1 process:
Alignment measurement to stent and tension device production installation, the insulator installation - busbar processing - busbar connection - >
The bus bar installation - bus painting brush oil - check the sending
3.2 the feeding measures:
3.2.1 into the scene according to the different situation of bus bar and bracket installation, check whether match the drawings.
3.2.2 alignment measurements: check the length along the bus bar installation direction without obstacles, to building structures or equipment pipeline crossover phenomenon, such as ventilation installation components.
3.2.3 distribution ark busbar installation, measurement and other components on equipment safe distance is in accordance with the requirements.
3.2.4 pay-off measure the paragraphs busbar processing size, size, and underline or fixed installation distance and drawing hole of the support installation position.
3.3 support and the production of the tension device installation
3.3.1 busbar stent made of 50 * 50 * 5 Angle, expansion bolt is fixed on the wall (FIG. 2-37).
3.3.2 rainfall distribution on 10-12 busbar tension device according to the appended drawings production assembly (FIG. 2-38).
3.4 insulator installation:
3.4.1 track insulator before installation to measure insulation, insulation resistance value is greater than 1 megohm is qualified. Check the insulator appearance no crack and defect phenomenon, insulator perfusion of bolt, nut strong rear can use. 6 ~ 10 kv post insulator pressure test should be obtained before installation.
3.4.2 insulator a asbestos pad up and down to the mat.
Rule 3.4.3 insulator plate, made of card board specifications should be compatible with the specifications of the bus. The installation of the insulator splint, card board, be strong.
3.5 the busbar processing:
3.5.1 track of bus bar straightening and cutting off
3.5.1.1 bus bar straightening the mother with the straightening straightening machine, manual straightening must use wooden hammer, the following mat tie for work, not with a hammer.
3.5.1.2 bus cut can use hand saw sawing or wheel homework, with arc or acetylene shall not be cut.
3.5.2 busbar bending:
3.5.2.1 busbar bending application of special tools (busbar simmer bending) cold heat, bend shall not have cracks and significant buckling. Hot bending may be undertaken.
3.5.2.2 busbar bending and bending of ping (FIG. 2-39) bending radius should not be less than given in table 2 to 12.
3.5.2.3 busbar twisted, reversing the length of the part should not be less than 2.5 times ~ 5 times of the width of the bus (FIG. 2-40).
3.6 busbar connection:
Busbar connection can be used welding or bolt connection.
3.6.1 busbar welding:
3.6.1.1 welding position:
Weld the curve edge points or support insulator shall not be less than 50 mm, such as how the same phase bus bar, the weld should be staggered shall not be less than 50 mm.
The rectangle busbar minimum bending radius (R) value table 2 to 12
Bending mode bus bar section size minimum bending radius (mm)
Copper aluminum steel (mm)
Flat curved 50 x 5
125 x 10 2 h
2 h, 2 h
2.5 h to 2 h
2 h.
Bending 50 x 5
125 x 10 1 b
1.5 b 1.5 b
2 b 0.5 b
1 b
3.6.1.2 welding technical requirements:
The welding of aluminium and aluminium alloy bus should use argon arc welding, welding copper bus bar can use 20 l # and 202 #, 301 # brazing copper electrode powder or borax, to save material, also can use waste or scrap cable core instead of electrode wire core, but no corrosion, the surface should be smooth and shall wipe grease, before welding.
Should use wire brush to clean before welding bus bar groove in the oxide layer, the bus bar with refractory brick and cushion flat alignment, prevent hi-lo, groove place according to bus specification set aside 1 ~ 5 mm clearance, then the welder welding, weld line straight, not hi-lo, welding must be double. Should be raised with arc welding seam, strengthen height, upper should be 2 ~ 4 mm fillet height is 4 mm. Weld shall not have cracks, slag inclusion, incomplete fusion and bite meat, after the welding should be hot wash off with plenty of water flux.
3.6.1.3 welder, should be passed the examination. Bus after welding inspection should comply with the specification requirements.
3.6.2 busbar bolt connection:
3.6.2.1 busbar hole size and bolt specification see table 2-3.
3.6.2.2 rectangle busbar using bolt of lap joint, joint from the support of the post insulator plate edge should not be less than 50 mm; Piece on the bus bar end and the lower bus flat bend start distance should be not less than 50 mm (FIG. 2-41).
3.6.2.3 busbar and busbar busbar and branch line, busbar and electrical terminals lap, the lap surface must level off, clean and coated with electricity compound, and meet the following requirements.
A copper and copper: outdoor, high temperature and wet or the bus technicians to corrosive gases indoors, must be tin. In drying chamber can be directly connected.
Aluminum and aluminum b: direct connection.
Copper and aluminum: c in a dry indoor, tin copper bus bar in China, nearly 100% of indoor or outdoor air relative humidity, should use transition copper aluminum plate, copper side should be lining tin.
D steel and copper or aluminium: steel technicians to lap surface must be tin.
3.6.2.4 bus using bolt connection, flat washer should choose special thick washer, and must complete the trampoline. Bolt, flat washer and trampoline must use galvanized parts. Bolt length should be considered in the bolt fastening thread can reveal nut after 5 ~ 8 mm.
3.6.2.5 bus interface should be connected closely, torque wrench fastening connection bolt application, the fastening torque value should comply with the regulations of table 2-14.
3.7 the installation of busbar
3.7.1 bus bar installation should be smooth and beautiful, and bus bar installation:
Horizontal section: two support height error is not more than 3 mm, length is not more than 10 mm.
Vertical section: two vertical support point error is not more than 2 mm, length is not more than 5 mm.
Distance between: parallel spacing should be uniform, the error is not more than 5 mm.
3.7.2 bus bar installation as shown in figure 2-42 and the minimum safety distance table 2-15.
3.7.3 busbar support point spacing, the low voltage busbar shall not be greater than 900 mm, the high tension line shall not be greater than 1200 mm. Low voltage bus bar installation and vertical support point distance can't meet the requirements, shall be equipped with bus bar insulation splint (FIG. 2-43).
Indoor distribution equipment minimum safety net distance (mm) table 2-15
The rated voltage
1 ~ 3 kv 6 kv and 10 kv
Live part to the ground and between different phase live part (A) 75 100 100
Live part and the fence (B1) 825 825 875
Live part and the mesh covered column (B2), 175, 200, 225
Live part and the slab covered column (B3) 105 130 155
Naked column bare conductor and the ground (C) 2375 2400 2425
No naked with piecewise bar with bare conductor (D) 1875 1900 1900
Wire casing and the outdoor channel road (E) 4000 4000 4000
3.7.4 bus in support of fixed point: bus bar should be used for horizontal installation open wing clip, should be adopted for vertical installation of busbar busbar splint (FIG. 2-44).
Busbar is only allowed in the vertical section in the middle of the clamp on a pair of plywood, the same vertical section should have the rest of the plywood and bus bar between 1.5 ~ 2 mm gap.
3.7.5 wall partition installation method as shown in figure 2-45.
3.8 bus oil painting brush
3.8.1 busbar order and paint colors are shown in table 2-16-17, and table 2 brush paint should be uniform, neat, sank or contamination device shall not flow.
Bus phase permutation table 2-16
Bus phase arranged three line four lines
Level (by after-hours to disk)
Vertical (down)
Down lead (left to right) A, B, C
A - B - C
ABC A, B, C, O
A, B, C, O
ABCO
Bus painting table 2 to 17
Bus phase coating color bus phase coating color
A phase
B phase
C is yellow
green
red
Neutral (ground)
Neutral (ground)
The purple
Purple with black stripes
3.8.2 terminal equipment, busbar measures or clamp, plywood, Ming set ground connection screws in 10 ~ 15 mm on both sides and paint is not allowed.
3.9 check the sending:
3.9.1 bus after the installation, to full inspection, cleaning up the scene of the tools and sundry, and consultation with relevant unit personnel, unauthorized persons. Please leave.
Pressure test, 3.9.2 bus bar should be done before sending below 500 v bus can use 500 v shake table test, insulation resistance is not less than 0.5 M Ω.
3.9.3 power must have the specialist is responsible for, sending procedure should be first after high pressure, low pressure; After first trunk, branch; After isolating switch first load switch. Reverse power with the above order.
3.9.4 workshop bus should not hang up before sending electrical signs, and inform the relevant units and personnel shall have the light after sending.
4 quality standards
4.1 ensure projects:
4.4.1 high-voltage insulator and withstand voltage test of high pressure wear casing wall must comply with the rules and regulations of construction.
Inspection method: inspect pressure test records.
High voltage porcelain surface is strictly forbidden to 4.1.2 defects such as cracks, defects and damage of enamel.
Inspection method: to observe the examination.
4.1.3 busbar connection must meet the following requirements:
4.1.3.1 busbar contact compact connection, connection bolt tightening torque values conform to the state.
4.1.3.2 welding in the strengthening of welds is 2 ~ 4 mm height, joint on each side out 4 ~ 7 mm; Weld defects such as cracks, lack of penetration, residual flux was removed.
4.1.3.3 busbar lap of different metals, it accord with the rules and regulations of construction the lap surface treatment.
Methods: to observe the inspection and test or inspection installation records.
4.1.3.4 busbar bend in the forbidden gaps and cracks.
Inspection method: to observe the examination.
4.2 the basic items:
2 bus insulator and bracket installation shall meet the following requirements: position correctly, fixation, fixed bus with hardware is correct, complete, complete black metal stents corrosion.
Horizontal flat vertical, rows of neat rows, uniform spacing, the paint colour and lustre is uniform, insulator surface clean.
Inspection method: to observe the examination.
4.2.2 bus bar installation shall meet the following requirements:
4.2.2.1 straight and neat, color correct; Bus ride or move bolt and busbar stick hole size is correct.
4.2.2.2 maintain between the rectangle busbar pills more equal interval with the thickness of the bus, multichip bus bar in the middle of the fixed frame does not form a closed magnetic circuit; The tension device of workshop of low-pressure overhead busbar tension device fixation, with each busbar sag in a mutual difference is not greater than 10%.
Using screw threads are exposed nut 2 ~ 3 buttons; Take it busbar uniform coating is smooth; Trolley bus sag is consistent; Color coating evenly.
Inspection method: to observe the inspection and check the installation records.
4.2.2.3 bus bar grounding stents and other non charged metal parts (zero) feeder installation shall meet the following requirements:
Connect closely, and firm, choose correct grounding (zero) line section, anticorrosive parts of the paint evenly without omission. Line to the reasonable, color standard, after besmear is not contaminated equipment and buildings.
Inspection method: to observe the examination.
4.3 allow deviation, bending radius of bus bar installation and inspection method should comply with the regulations of table 2 to 18.
5 finished product protection
5.1 insulation porcelain should be properly kept, prevent bruising, has installed porcelain should not bear other stress, in case of damage.
5.2 modulated straight mother with the semi-finished products should be properly kept, may not be the place. Good mother with the installation should pay attention to protect, not collision, nor in the mother take place the weight.
5.3 substation room need secondary spray, mother with the cover with plastic cloth should be good.
5.4 bus bar installation in the doors and Windows installed and lock to prevent equipment damage.
6 should pay attention to quality problems
6.1 the quality problem of the bus bar installation should be paid attention to are shown in table 2-19.
Often produce the quality problems and control measures of table 2-19
The quality problem of the serial number often produce for prevention measures
1 all kinds of steel and other metal materials, paint, rust removing and uneven, with brush leakage 1. Strengthen the material management work, strengthening the work sense of responsibility; 2. Prepare the check
1. Complete tool preparation before construction, do not use steam electric welding cutting;
2. The construction of strengthening management to establish rewards and punishment system, strict inspection system
3
Busbar lap joint gap is too big, can't meet the requirements
1. The busbar voltage or move the gasket should conform to the requirements of the regulations, to thicken the gasket should be processed before the construction preparation stage; 2. The bus ride it (surface) using a flat file, file; 3. Carefully check
7 should possess the quality of the record
7.1 product certification.
7.2 the material inspection certificate.
7.3 equipment material inspection records.
7.4 preview records.
7.5 since the inspection records.
7.6 insulation shake test record.
7.7 pressure test report.
7.8 kinds of construction quality assessment record.
7.9 design changes regarding the record.
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