High voltage switch installed
1 scope
The technology standard is suitable for use in 6 ~ 10 kv general industrial and civil building electric installation engineering of isolating switch, load switch installation.
2 construction preparation
2.1 equipment and materials requirements:
2.1.1 high voltage switch equipment specification, type, voltage grade should meet the design requirements.
2.1.2 equipment should be equipped with nameplate, indicate the manufacturer and specification, model, product certification and technical documents.
2.1.3 equipment accessories complete, appearance inspection in good condition, porcelain without damage and crack.
2.1.4 installation material shall have certificate, material specifications comply with the design requirements, no obvious corrosion steel. In addition to the anchor bolt, other fastening bolt and washer are galvanized parts should be adopted.
2.2 the main equipment:
2.2.1 installation tools: electric hammer, electric drill, steel cutting machine, welding machine, welding tools.
2.2.2 tools commonly: electrician tools, hammer, wrench, level, scale, line drop, high stool.
2.3 operation conditions:
2.3.1 finished basic civil engineering construction, walls, roof, spray paint, without leaking. Door window glass table, door lock.
2.3.2 reserve, embedded parts comply with the design requirements.
2.3.3 is associated with high voltage switch electrical equipment such as switchgear, transformer installed, inspection.
2.3.4 construction drawings and technical data are complete and have reliable safety, fire protection measures.
2.3.5 installation site is clean, with proper lighting, scaffolding, safe and reliable when necessary.
3 operation process
3.1 process:
Equipment out some pieces to steel stent production installation, equipment installation and operator - > to install
Lead to equipment installed and stent grounding (zero) to withstand voltage test, transmission operation acceptance
3.2 equipment out of the points:
3.2.1 out some pieces of the equipment should be jointly by installation, supply, construction and other units. And make detailed records.
3.2.2 in accordance with the equipment list and technical data, check whether the equipment specifications comply with the design requirements, the attachment is complete, the product certificate.
3.2.3 appearance inspection equipment: framework corrosion, do you have any open welding or deformation, insulation porcelain have bad damage and crack, two head bolt is firmly braced insulator. Terminals and current-carrying part shall be clean, and good contact, contact silver coating without loss.
3.2.4 arc suppression is complete, no deformation and damaged.
3.2.5 load switch insurance tube measurement without broken wires.
3.3 steel stent production installation:
3.3.1 there are three kinds of high voltage switch installation fixed way in general:
3.3.1.1 directly against the wall of concrete using dovetail bolt installation;
3.3.1.2 USES the embedded steel plate installation, the installation before processing a set of framework and equipment of the same size steel bracket, will stand on the embedded steel plate, welding and installing equipment;
3.3.1.3 using wall bolt installation. With all the way to install, shall be installed in advance with processing and installation of accessories.
3.3.2 rainfall distribution on 10-12 operator support production installation generally there are two ways:
3.3.2.1 installed against the wall (FIG. 2-68, 2-69);
3.3.2.2 wall installation (FIG. 2-70, 2-71).
3.4 installation:
3.4.1 track equipment installation position should comply with the drawing size, convenient to the secondary lead, reference was charged with actual location equipment, will make appropriate adjustments plane position. But the installation height must conform to the requirements of the drawings.
3.4.2 equipment installation should be a right, vertical, to receive strength evenly after installation equipment base, variant is not allowed. Fixed tightly.
Rule 3.4.3 installation load switch, against the wall to avoid connecting rod arm to touch the wall, can be the base mat is high.
3.5 operator installation and adjustment:
3.5.1 track of operating mechanism of the installation position should meet the following requirements:
3.5.1.1 wheelbase fixed ground height 1 m;
3.5.1.2 installed against the wall, handle center distance side wall should not be less than 0.4 m;
3.5.1.3 side wall installation, handle center distance side wall should not be less than 0.3 m. Handle with live part distance should not be less than 1.2 m.
3.5.2 operating mechanism should be adjusted, flexible and reliable, in correct position. With electric tripping or auxiliary switch operating mechanism. Should be reliable, accurate position.
3.5.3 switch blade and fixed contact should aim at, insert depth should meet the requirements of switch, contact closely, pressure evenly on both sides.
3.5.4 switch blade with the vertical distance between the fixed contact and blade rotation Angle should not be less than given in table 2 to 28.
Switch the vertical distance between the blade and fixed contact and blade rotation table 2 to 28
Said type rated voltage (kV) open Angle (degrees) distance (mm)
Indoor high voltage isolating switch GN2 10, 65, 158-4
Indoor high voltage isolating switch GN8 6 ~ 10 > 160
Indoor air type high voltage load switch FN2 10 to 182 + 3
Indoor high voltage load switch FN1 10 58
3.6 lead installation:
3.6.1 track installation of high voltage load switch against the wall and into the wire cable connection should be through the bus bar (FIG. 2-72).
3.6.2 of high voltage switch fuses shall comply with the terms of the corresponding chapters.
3.7 devices and grounding
3.7.1 high voltage switch and the operating mechanism of metal stents, are used galvanized round steel or flat iron and reliable grounding.
3.7.2 metal parts of the high voltage switch is not charged and operating mechanism should be reliable grounding, grounding line available soft copper wire, cross section is not less than 10 was.
3.7.3 grounding practices shall comply with the terms of the corresponding chapters.
3.8 pressure test: high voltage switch equipment should work frequency withstand voltage test before sending, with other high voltage test equipment at the same time.
3.9 sending run acceptance: high voltage switch power run acceptance shall be carried out together with other devices, no-load running 24 h no abnormal phenomenon, pay party a's acceptance.
4 quality standards
4.1 ensure projects:
4.4.1 test of high voltage switch adjustment as a result, must conform to the rules.
Test method: check test testing record.
4.1.2 porcelain surface are strictly forbidden to have defects such as cracks, defects and damage of enamel.
Inspection method: to observe the examination.
4.2 the basic items:
2 switch position should be correct installation, fixed firmly, parts complete, flexible operation part and accurate.
4.2.2 such as fixed bracket, connecting rod and the shaft connection, the paint is complete.
Part holdings operation convenient save Labour, less empty trip, no obvious vibration points when closing.
4.2.4 grounding (zero) regional compact connection, laying solid, cross section is chosen correctly.
Test method: to observe the operation inspection, try.
5 finished product protection
5.1 no installation equipment shipped to the site, may not be split open a case, and warehousing safekeeping.
5.2 equipment handling and installation, should prevent equipment collision, broke up and protect the porcelain is in good condition.
5.3 deal with porcelain pay attention to protect the equipment installation process, if necessary take porcelain (such as load switch insurance tube), or a cloth to porcelain, to prevent mechanical damage or welding slag wounded.
5.4 good doors and Windows is closed, the door lock protection.
6 should pay attention to quality problems
6.1 the quality problem of the high voltage switch installation should be paid attention to are shown in table 2-29.
High voltage switch installation should pay attention to quality problems and control measures in table 2-29
The quality problem of the serial number often produce for prevention measures
Stents and seam welding slag cleaning not net, uneven brush paint, there are omissions improve quality consciousness, strengthening self-inspection, mutual inspection, prevent the disease
2 stent installing rickety strengthening self-inspection, mutual inspection
3 not flexible operating mechanism to adjust raises the level of operation and technology
4 porcelain wound be finished product protection
5 switch in the wrong, blade contact not only improve the level of operation technology
7 should possess the quality of the record
7.1 equipment and material receiving inspection records.
7.2 product certification.
7.3 since the inspection records.
7.4 pressure test report.
7.5 design changes regarding the record.
7.6 preview records.
7.7 the steel material.
7.8 kinds of construction quality assessment record.
1 scope
The technology standard is suitable for use in 6 ~ 10 kv general industrial and civil building electric installation engineering of isolating switch, load switch installation.
2 construction preparation
2.1 equipment and materials requirements:
2.1.1 high voltage switch equipment specification, type, voltage grade should meet the design requirements.
2.1.2 equipment should be equipped with nameplate, indicate the manufacturer and specification, model, product certification and technical documents.
2.1.3 equipment accessories complete, appearance inspection in good condition, porcelain without damage and crack.
2.1.4 installation material shall have certificate, material specifications comply with the design requirements, no obvious corrosion steel. In addition to the anchor bolt, other fastening bolt and washer are galvanized parts should be adopted.
2.2 the main equipment:
2.2.1 installation tools: electric hammer, electric drill, steel cutting machine, welding machine, welding tools.
2.2.2 tools commonly: electrician tools, hammer, wrench, level, scale, line drop, high stool.
2.3 operation conditions:
2.3.1 finished basic civil engineering construction, walls, roof, spray paint, without leaking. Door window glass table, door lock.
2.3.2 reserve, embedded parts comply with the design requirements.
2.3.3 is associated with high voltage switch electrical equipment such as switchgear, transformer installed, inspection.
2.3.4 construction drawings and technical data are complete and have reliable safety, fire protection measures.
2.3.5 installation site is clean, with proper lighting, scaffolding, safe and reliable when necessary.
3 operation process
3.1 process:
Equipment out some pieces to steel stent production installation, equipment installation and operator - > to install
Lead to equipment installed and stent grounding (zero) to withstand voltage test, transmission operation acceptance
3.2 equipment out of the points:
3.2.1 out some pieces of the equipment should be jointly by installation, supply, construction and other units. And make detailed records.
3.2.2 in accordance with the equipment list and technical data, check whether the equipment specifications comply with the design requirements, the attachment is complete, the product certificate.
3.2.3 appearance inspection equipment: framework corrosion, do you have any open welding or deformation, insulation porcelain have bad damage and crack, two head bolt is firmly braced insulator. Terminals and current-carrying part shall be clean, and good contact, contact silver coating without loss.
3.2.4 arc suppression is complete, no deformation and damaged.
3.2.5 load switch insurance tube measurement without broken wires.
3.3 steel stent production installation:
3.3.1 there are three kinds of high voltage switch installation fixed way in general:
3.3.1.1 directly against the wall of concrete using dovetail bolt installation;
3.3.1.2 USES the embedded steel plate installation, the installation before processing a set of framework and equipment of the same size steel bracket, will stand on the embedded steel plate, welding and installing equipment;
3.3.1.3 using wall bolt installation. With all the way to install, shall be installed in advance with processing and installation of accessories.
3.3.2 rainfall distribution on 10-12 operator support production installation generally there are two ways:
3.3.2.1 installed against the wall (FIG. 2-68, 2-69);
3.3.2.2 wall installation (FIG. 2-70, 2-71).
3.4 installation:
3.4.1 track equipment installation position should comply with the drawing size, convenient to the secondary lead, reference was charged with actual location equipment, will make appropriate adjustments plane position. But the installation height must conform to the requirements of the drawings.
3.4.2 equipment installation should be a right, vertical, to receive strength evenly after installation equipment base, variant is not allowed. Fixed tightly.
Rule 3.4.3 installation load switch, against the wall to avoid connecting rod arm to touch the wall, can be the base mat is high.
3.5 operator installation and adjustment:
3.5.1 track of operating mechanism of the installation position should meet the following requirements:
3.5.1.1 wheelbase fixed ground height 1 m;
3.5.1.2 installed against the wall, handle center distance side wall should not be less than 0.4 m;
3.5.1.3 side wall installation, handle center distance side wall should not be less than 0.3 m. Handle with live part distance should not be less than 1.2 m.
3.5.2 operating mechanism should be adjusted, flexible and reliable, in correct position. With electric tripping or auxiliary switch operating mechanism. Should be reliable, accurate position.
3.5.3 switch blade and fixed contact should aim at, insert depth should meet the requirements of switch, contact closely, pressure evenly on both sides.
3.5.4 switch blade with the vertical distance between the fixed contact and blade rotation Angle should not be less than given in table 2 to 28.
Switch the vertical distance between the blade and fixed contact and blade rotation table 2 to 28
Said type rated voltage (kV) open Angle (degrees) distance (mm)
Indoor high voltage isolating switch GN2 10, 65, 158-4
Indoor high voltage isolating switch GN8 6 ~ 10 > 160
Indoor air type high voltage load switch FN2 10 to 182 + 3
Indoor high voltage load switch FN1 10 58
3.6 lead installation:
3.6.1 track installation of high voltage load switch against the wall and into the wire cable connection should be through the bus bar (FIG. 2-72).
3.6.2 of high voltage switch fuses shall comply with the terms of the corresponding chapters.
3.7 devices and grounding
3.7.1 high voltage switch and the operating mechanism of metal stents, are used galvanized round steel or flat iron and reliable grounding.
3.7.2 metal parts of the high voltage switch is not charged and operating mechanism should be reliable grounding, grounding line available soft copper wire, cross section is not less than 10 was.
3.7.3 grounding practices shall comply with the terms of the corresponding chapters.
3.8 pressure test: high voltage switch equipment should work frequency withstand voltage test before sending, with other high voltage test equipment at the same time.
3.9 sending run acceptance: high voltage switch power run acceptance shall be carried out together with other devices, no-load running 24 h no abnormal phenomenon, pay party a's acceptance.
4 quality standards
4.1 ensure projects:
4.4.1 test of high voltage switch adjustment as a result, must conform to the rules.
Test method: check test testing record.
4.1.2 porcelain surface are strictly forbidden to have defects such as cracks, defects and damage of enamel.
Inspection method: to observe the examination.
4.2 the basic items:
2 switch position should be correct installation, fixed firmly, parts complete, flexible operation part and accurate.
4.2.2 such as fixed bracket, connecting rod and the shaft connection, the paint is complete.
Part holdings operation convenient save Labour, less empty trip, no obvious vibration points when closing.
4.2.4 grounding (zero) regional compact connection, laying solid, cross section is chosen correctly.
Test method: to observe the operation inspection, try.
5 finished product protection
5.1 no installation equipment shipped to the site, may not be split open a case, and warehousing safekeeping.
5.2 equipment handling and installation, should prevent equipment collision, broke up and protect the porcelain is in good condition.
5.3 deal with porcelain pay attention to protect the equipment installation process, if necessary take porcelain (such as load switch insurance tube), or a cloth to porcelain, to prevent mechanical damage or welding slag wounded.
5.4 good doors and Windows is closed, the door lock protection.
6 should pay attention to quality problems
6.1 the quality problem of the high voltage switch installation should be paid attention to are shown in table 2-29.
High voltage switch installation should pay attention to quality problems and control measures in table 2-29
The quality problem of the serial number often produce for prevention measures
Stents and seam welding slag cleaning not net, uneven brush paint, there are omissions improve quality consciousness, strengthening self-inspection, mutual inspection, prevent the disease
2 stent installing rickety strengthening self-inspection, mutual inspection
3 not flexible operating mechanism to adjust raises the level of operation and technology
4 porcelain wound be finished product protection
5 switch in the wrong, blade contact not only improve the level of operation technology
7 should possess the quality of the record
7.1 equipment and material receiving inspection records.
7.2 product certification.
7.3 since the inspection records.
7.4 pressure test report.
7.5 design changes regarding the record.
7.6 preview records.
7.7 the steel material.
7.8 kinds of construction quality assessment record.
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