Electrical:
1, electrical conduit laying standardized practices:
Basement open metal conduit, the material is hot-dip galvanized steel pipe;
Fire linkage control, automatic fire extinguishing control, communications, emergency lighting, fire broadcasting and other lines designed to wear metal pipe protection; dark laying thickness of the protection layer not less than 30mm (15mm for non-fire fighting lines).
Roof, roof and other outdoor venues
The use of hot-dip galvanized welded
steel pipe or plastic pipe, fixed pipe card to choose the off-wall jockey card; out of the ground, vertical part of the line pipe out of the end of the line curved into a semicircular arc waterproof bending or adding waterproof elbow.
Hot-dip galvanized line pipe connection with a special grounding card across the connection, the line between the two cards: RBV-4m ㎡; non-galvanized steel line pipe (SC) wire connection, the connection of the two ends of the # 6 ~ 8 round pipe welded across the grounding line; tighten the pipe pipe connection between the two ends of the top silk tightened to the silk cap off to complete the grounding across the connection;
Electrical conduit and heating, hot water, gas piping, the distance between the parallel distance is not less than 300mm, crossing distance is not Less than 300mm, cross distance of not less than 100mm;
Electrical conduit through the deformation joints using hose connection, hose leave a margin; deformation joints at one end of the addition of wire box, the metal wire pipe also need to do the grounding jumper;
Electrical conduit through the deformation joints using hose connection, hose leave a margin; deformation joints at one end of the addition of wire box, metal wire pipe also need to do the grounding jumper;
Electrical conduit through the deformation joints using hose connection, hose leave a margin; < /p>
2, electrical cable laying standardized practices:
Residential buildings within the household air conditioning, bathroom, kitchen outlet circuits are independent circuits, their wires do not wear the same pipe with the lighting circuit wires; that the same AC circuit wires worn in the same metal conduit, tubes, grooves are not allowed to joints;
Pipe openings have protection measures, threading is not missed with wire casing Or mouth protection; outdoor installation of the wire pipe in the wire or cable after penetration, the mouth of the pipe for sealing;
The box wiring is neatly arranged, circuit numbering is complete, accurate marking, electrical box wires are connected tightly, without damage to the core, without breaking the strand;
1, cable buried pipe buried;
2, the procurement of national standard galvanized steel pipe, pressing the elbow with a special hydraulic bending machine, to ensure that the cable Pre-embedded pipe bending quality.
3, in the cable trench before the installation of templates to complete the cable buried pipe construction, to avoid the cable trench chiseling buried pipe affect the quality of civil construction.
Cable buried pipe buried in addition to the construction of the map, should also take into account the actual location of the equipment wiring, so that the cable buried pipe buried once in place, to avoid the buried pipe position deviation affects the cable on the line on the beautiful.
The box wiring is neatly arranged, circuit numbering is complete, accurate identification, electrical box wire connection is tight, no damage to the core, without breaking the strand;
1, according to the regulations of the high and low power cables, strong power, weak control cables according to the configuration from top to bottom.
2, the temperature of the cable laying area should not be higher than the allowable long-term operating temperature of the cable. Cable and pipe insulation layer parallel to the outer surface of the spacing is greater than 500mm, cross should be greater than 200mm, can not be achieved, should take thermal protection measures.
3, the cable from the cable rack leads to the use of openers to open holes, the installation of cable pipe welding fixed, with flame retardant hose connector connection. Do not use the hose connector, protect the end of the tube with thermoplastic pipe thermoplastic.
1) mechanical laying cable speed ≤ 15m/min, traction strength is not greater than 7kg/mm2, to prevent mechanical damage to the cable.
2) cable laying after the two ends of the production of cable head, wrapped tightly with plastic tape, and then use heat-shrinkable tubes heat-shrinkable, armored cables, its steel band to be tightened with a hoop.
3, electrical wiring standardized practices
Different cross-section of the wire using a splice terminal before pressing on the same terminal, the same terminal wire connection is not more than 2, anti-loosening washers complete;
control cables made after the head, the cable core straighten, neatly arranged, tied at an even distance, spacing of 100 ~ 120mm, should be configured according to the vertical or horizontal regularly Multi-stranded core pressure wire nose, wire exposed nose 0.6 ~ 1mm.
4, electrical bridge installation standardized practices
Supporting hangers are generally welded directly to the buried parts, no pre-buried iron can be used to expand the bolt fixed. In the steel structure can be directly welded fixed, after installation should be welded parts of the paint. Cable bracket should be clearly grounded and well grounded.
Roof and other outdoor part of the place of the bridge selection need to consider the chassis for the hot dip galvanized rain-proof bridge with drainage holes, the cover plate for the rain-proof type of gland; basement bridge using hot dip galvanized material of the bridge (power supply and other bridges have special requirements, except for the bridge);
All have to do rust-proofing treatment (non-galvanized, baking, spraying) of the bridge bracket support brackets are brushed with rust-proof paint and topcoat each once (preferably before installation).
The distance between the supports and hangers for horizontal installation of cable tray is 1.5~3m;
Trays or ladder racks with cable tray width of 600mm and below use the screw boom plus angle steel boom; the boom specifications for different widths of cable trays (please see the table for details);
The brackets for the cable trays with width of 100m and above against the wall can be installed by the angle steel brackets, and the brackets can be made of the angle steel boom, and the brackets can be made of the angle steel boom. Bracket installation, bracket can be installed by the bridge manufacturers or suppliers of their own production;
Vertical installation of the bridge (such as in the shaft) bracket spacing of 2 meters, the material for the thickness of not less than 4mm flat steel fixed to the bottom of the bridge or ∠30 * 3 ~ ∠50 * 5 angle in the bridge on both sides of the edge of the bolt fixed.
Parallel spacing: 0.4 m with general process piping; 0.5 m with flammable and explosive piping; 0.5 m with thermal piping with heat insulation, 1.5 m without heat insulation; cross spacing: 0.3 m with general process piping; 0.5 m with flammable and explosive piping; 0.3 m with thermal piping with heat insulation, 0.5 m without heat insulation;
5, the standardization of electrical pre-branching cable Practice
Pre-branching cable: cable shaft at the top of the pre-buried hooks; fixed bracket at each level not less than 2, the lowest fixed bracket from the ground height of 500mm.
6, electrical grounding device standardized practice
Welding lap length: round steel and round steel or flat iron ≥ 6d; flat steel and flat steel ≥ 2b. (d is the diameter of the garden steel, b is the width of the flat steel) flat steel lap Weld not less than 3 prongs ("two long and one short")
7, the standardization of electrical lead wire practice
Body construction, the use of columns inside and outside of the main bar as a lightning protection lead wire, each group of lead wire not less than 2 ≧ Ф16mm rebar, and make a good mark;
8, the electrical test points Standardized practice
9, electrical lightning belt standardized practice
Lightning belt installation height of 150mm, bracket spacing of 1000mm, corner spacing of 300mm (except for special requirements of the Shanghai area), between are arranged evenly and reliably, straight; lightning belt through the expansion joints and settlement joints, there are curved margins;
Roofing, roofing, metal piping, metal water tanks, air ducts, ducts and other equipment.
Roof, roof metal piping, metal water tanks, ducts, hoods, air conditioning and other metal objects are connected to the lightning protection device (structural construction to be pre-buried -25 * 4 flat steel);
Distribution boxes (cabinets) can be opened door to use the shabu-shabu treatment of the copper braid or RBV-6 grounding wire grounding jumper, grounding wire and the terminal row is reliably connected;
Basement, shafts and other parts of the open wall mounted distribution boxes Height of the bottom edge from the ground 1.2 ~ 1.5m (large box 1.2m);
10, electrical lamps and lanterns installation standardized practices
Evacuation channel on the induced light spacing ≦ 15m (civil defense project ≦ 10m); aisle corner ≦ 1m;
Airborne obstacle light lamps and lanterns selection: low light intensity (60m from the ground below the installation of the use of) for the red constant light; high light intensity (more than 150m) Light intensity (more than 150m) for the white flash; light intensity (60 ~ 150m) for the red or white flash; aviation obstacle light power supply in accordance with the requirements of the highest load level in the main building power supply;
Swimming pools and similar places lamps and lanterns (underwater lights and waterproof lamps and lanterns) set up equipotential coupling, and the power supply with a special leakage protection device; from the power supply to introduce the lamps and lanterns of the electrical conduit with an insulated conduit;
Garage entrance lighting fixtures are not suitable for hanging chain installation installation;
flexible cord pendant lamps soft cord ends to do protection buckle, both ends of the core wire tin-lined; when the screw head, the phase wire is connected to the middle of the screw head on the terminal;
Safety exit lamps installed on the door frame 100mm; double-head emergency lights 2.4m from the ground at the bottom edge; evacuation lamps height of 600mm;
11, electrical panel installation standardization. p>11, electrical panel installation standardized practices
indoor common panel installation height (bottom edge from the ground): switch 1.3m, socket 0.3m (bathroom, balcony and other parts of the splash-proof sockets 1.5m; range hoods, exhaust fan sockets 2.2m; wall-mounted air conditioner socket installation height of 2.0m); perception requirements: the same indoor deviation of less than 5mm, side-by-side installation of height differences Less than 1mm, panel close to the wall, no gaps around, smooth and clean surface, no cracks, scratches;
Entry door living room lighting switch installation position along the direction of the door opening that is the door lock side of the inner wall, the horizontal distance from the door frame 150~200mm;
1, cable fireproofing dense, in order to achieve the purpose of reliable fire prevention.
2, fire blocking beautiful appearance, fire board and fire clay into regular geometric shape, neat and consistent.
Water supply and drainage:
1, water supply and drainage drainage equipment installation standardized practices
Connected to the elevator pit water collection well drain bottom to be flush with the elevator pit at the lowest point, is located in the water collection well end from the mouth of the well 200~300mm;
Expansion joints are installed in the connection of each layer of the cross-branching of the tee in the lower part of the building; high-rise buildings in the ≧110 of the open drainage Plastic pipe set each layer of fire-resistant ring;
Drainage riser support, hanger selection and pipe supporting support, hanger construction; pipe card and drainage pipe contact tight;
Riser, branch pipe installation is completed according to the requirements of the flooding, through the ball test;
Same-level drainage civil construction structure of the plate: bathroom layout for the ordinary three-piece form, and the long side is not more than 3.5m, the structure of the plate height of 250mm; sanitary ware, the height of the plate is 250mm; the height of the plate is 250mm; sanitary ware, the height of the plate is 250mm. The height of the lowering plate is 250mm; when the arrangement of sanitary ware in the bathroom is more than 5 or the long side is more than 3.5m, the height of the lowering plate of the structure is 300mm; the center of the hole of the bathtub exhaust is 40mm away from the bottom of the structural plate of the bathroom of the previous floor, and the size of the hole is φ80; installation of risers and pipe fittings: the refined room is connected to the PE expansion expansion joints, PE tee or tee, and risers according to the design of the bathroom appliance positions, then the installation of PVC50 secondary drainage floor drains is carried out. Installation of PVC50 secondary drainage floor drain, and finally poured concrete hanging hole in two times;
2, drainage water supply pipe installation standardized practices
Basement through the wall casing, through the ground casing, through the roof casing installation of rigid waterproofing casing (this article applies to all divisions); for the pipeline through the wall where subject to vibration or have strict waterproofing requirements of the building, must be used for flexible Waterproof casing;
Selection of materials: indoor water supply pipe selection PP-R, heat fusion connection, the appropriate choice of pipe card closed card, should not use the opening of the U-type card; pumping station water supply pipe, shaft riser steel-plastic composite pipe; PPR for cold water (≤ 40 ℃) system, the selection of PN1.6MP pipe, fittings; for hot water system selection of PN2.0MPa pipe, fittings.
Clamp connection or flange connection for ≥DN100, wire fastening connection for ﹤DN100 (this article also applies to fire hose).
Pipes that reach or near freezing point in winter, such as roof mounted pipes, pipes in open corridor, and pipes at the entrance and exit of basement, need to be insulated, and it is appropriate to use rubber or rock wool as the insulating layer, and it is appropriate to use galvanized steel sheet or aluminum alloy sheet as the protective layer;
Connection: all water pipes of the system are connected by galvanized steel pipes with wire connection or groove connection. When DN ﹤ 80 when the use of screw connection, DN ≧ 80 can be used when the groove connection;
Selection of materials: indoor fire hydrant system of the pipeline and its fittings are used galvanized steel pipe and galvanized fittings;
pipeline fillet processing without broken wire or lack of silk, wire buckle exposed 2-4 buckles; in the exposed part of the wire buckle brushing reddish antirust paint anticorrosive treatment; the pipeline and the pipe fittings of the centerline in the same straight line, not tilted; according to different Straight line, not tilted; according to different pipe diameter processing pipeline groove, not too deep or too shallow; pipe card and pipe caliber consistent, and fastened with supporting bolts;
Pipe painting: pipe surface brush red paint, paint evenly, no pattern; non-galvanized support hangers and accessories rust brush iron red rust paint and paint each one; fire sprinkler pipeline selection of angle or channel steel hanger, DN80 and the following single or two When using a hanger for DN80 or below single or two pipes***, use ∠40*4 angle steel as a support hanger; DN100 and above single or two pipes*** use a hanger with 5# channel steel angle steel as a support hanger; when using a support hanger for 3 and above pipes***, according to the specifications of the pipes, adjust the angle steel or channel steel specifications appropriately to meet the load;
The distance between pipe supports and nozzles is not less than 300mm, and the distance between end nozzles and end nozzles is not less than 1,000mm, and the distance between end nozzles and end nozzles is not less than 1,000mm, and the distance between end nozzles is not less than 1,000mm. 300mm, and the distance between the end of the nozzle is not greater than 750mm; each pipe section on the branch pipe, the adjacent pipe section between the two nozzles should not be set less than one hanger, hanger spacing of 3.6 meters; pipeline trunk support hanger reference distance between: DN32 ~ 40 (including, the rest of the same), 4 meters; DN50 ~ 80, 5 meters; DN100 ~ 150, 6.5 meters; DN200 ~ 300, 9.5 meters; pipeline turn or 9.5 meters; pipeline turns or joints additional support hangers;
≥DN50 pipeline, the selection of screw hangers, each 15 meters within the straight section set a rocking bracket, the pipeline turn additional rocking bracket; sprinkler riser fixed bracket using 5 # angle iron processing production, the installation height of 1.6m; vertically installed in addition to intermediate pipeline clamps, but also should be at the beginning and the terminal Set up anti-shaking bracket, or fixed with pipe clamps, its installation position from the ground or floor distance of 1.5 ~ 1.8 meters;
Mechanical tee connection, you should check the gap between the mechanical tee and the hole, the parts should be uniform, and then fastened in place; mechanical tee hole spacing should not be less than 500mm, mechanical tee hole spacing should not be less than 1,000mm; mechanical tee and mechanical four-way Connection of the branch pipe caliber should meet the requirements;
Nozzle: nozzle installation using a special elbow or tee connection; nozzle end of the use of large and small head, do not use the core of the filler reducer; branch to the end of the installation of galvanized steel pipe DN25;
Water Flow Indicator: water flow indicator is installed in the horizontal pipeline on the side of the action of the direction of the direction of the same direction of the water flow; after the installation of the water flow indicator Pulp, diaphragm action is flexible, do not friction with the pipe wall;
Water pump installation: 37KW and above pumps (including fire sprinkler, living water pumps) foundation directly above the top plate for maintenance U-shaped hooks embedded parts pre-embedded, pre-embedded parts together with the steel welded securely;
The bottom of the water pump using vibration-damping measures;
Water pump suction pipe such as the reducer, should be used to eccentric size of the head and make the plane Face up, with a slope of a section of the same face down; suction pipe should be set up to support;
pipes into and out of the pipeline should be set up to support the activities or bracket, to prevent vibration damage to the accessories when the pump is running; according to the requirements of hanging open and close the indicator sign and spraying the direction of the water flow and text instructions;
Fireproof blocking practices: the top plate with fireproofing board blocking, the center of the holes around the cable tray is greater than 100mm use of Fire pillows, plus fire clay filling;
Ventilation and air conditioning:
1, air supply and exhaust/smoke system standardized practices
Supporting bracket selection of screws and anti-shaking bracket form; long-side dimensions of the duct support bracket in the 400mm and the following minimum spacing of 4 meters, more than 400, 3 meters (more than 2,500mm according to the design), the vertical mounting bracket spacing of 4 meters; fire damper, smoke valve and smoke outlet; fire damper, smoke valve and smoke outlet; fire damper, smoke valve and smoke outlet.
The exposed drive device of the fan (e.g. pulley, etc.) adopts the protective cover made of galvanized iron for safety protection, and the air outlets through the atmosphere are all installed with protective nets;
Cooling water pipeline riser bracket:
Vertical pipeline load-bearing bracket is applicable to the riser of the cooling water system of DN200 or above; vertical pipeline fixed bracket is applicable to all models of cooling water system;
Support Detailed Drawing (I):
1) For the convenience of casing installation and pipe insulation construction, the distance between the bottom of the steel bracket frame and the finished surface of the floor slab is recommended to be not less than 150mm;
2) Dimension Table (mm)
Process Requirements:
1) When adopting the bracket, the relevant structural specialties are required to consider the effect of the pipeline load on the safety of the structure;
3) The bracket is suitable for all types of cooling water systems.
2) The welding seam of the fixed bracket should be inspected in appearance to meet the requirements of welding process (see welding process chapter), and the welding deformation should be corrected;
3) The load-bearing bracket of the cooling water pipe is generally located at the lowest level of the pipe well, and the number of settings is decided according to the design requirements or force calculation;
4) The cooling water pipe is generally not considered as the pipeline compensation;
5) only set a fixed bracket, the riser of the lowest level of the first bracket needs to be reinforced or the bracket used to enlarge the type of steel (the specific size needs to be determined after stress analysis, load-bearing bracket of the stress calculation see appendix I);
6) production of qualified support, hanger, should be anti-corrosion treatment (see the chapter of rust and corrosion brush oil), proper storage.
7) the illustration is only a single pipe style, multi-pipe when used in combination;
8) bracket ribs and support plate selection refer to HG/T21629-1999 pipe rack standard drawings or indoor piping bracket and hanger 03S402;
9) winter operation of cooling towers (energy towers) piping should be referred to the set of chilled water piping.
Bracket details (II):
3, pipe horizontal bracket standardized practice
Scope:
1) the bracket is suitable for installation space is relatively small, especially the ceiling space is limited;
2) the bracket is only applicable to the pipeline OD ≤ 108mm.
4, chiller room bracket standardized practice
5, air duct through the wall, through the floor standardized practice:
In the air duct through the need to close the fire, storm walls or floor, there should be a pre-embedded pipe or protective casing, the thickness of the steel plate should not be less than 1.6mm. air duct and protective casing between the air duct, the application of noncombustible and non-hazardous to the human body of the flexible material sealing. Non above partition wall may not be equipped with protective casing.
Process description:
1) steel casing and blocking material should be flush with the finished surface; open duct casing surface as shown in the figure above to fire board blocking practices;
2) duct hanger using double-nut locking, screw exposed screw for 2 to 3 buckles;
3) horizontal duct through the wall or expansion joints in the reserved holes to add a steel casing of more than 1.6mm, casing filled with Otherwise material. Duct through the wall at the casing surface with a fireproof board sealing, fireproof board at the corners of the expansion bolts fixed to the wall. Fire board size is at least 50mm larger than the reserved hole;
4) duct and fire damper support bracket screw holes are machined;
Floor-to-ceiling air conditioning unit, fan installation (4)
Rubber vibration damping pads and equipment base and equipment foundation must be padded with steel plate on the bonding surface. Air conditioning unit, condensate pipe should be set up water seal, water seal height should be set according to the requirements of the equipment, or determined by the calculation, condensate drainage distance is too long, the water seal section should be disconnected from the drainage cross pipe to prevent poor water flow. Condensate drainage trunk pipe should be set up slope, slope to the drainage point, and not directly inserted into the floor drain.
Process requirements:
1) Fan installation should be based on the design drawings, product samples or fan in kind on the basis of a comprehensive inspection of the equipment foundation, in line with the size requirements.
2) The strength of the equipment foundation should meet the design requirements. Before the installation of the fan, the foundation surface should be shoveled out of hemp, so that the second pouring of concrete or cement mortar can be closely combined with the foundation.
3) The installation of rubber vibration damping pads need to consider the use of ambient temperature, do not make the rubber vibration damping pads over the use of temperature. Rubber vibration dampers are generally only suitable for -15 ~ +70 ℃ temperature range.
4) rubber damping pads used in series, the middle must be installed steel plate separation, should not exceed three layers. Rubber vibration damping cushion concave grain must be clean and free of debris, to avoid affecting the vibration damping effect.
5)Rubber vibration damping pads and equipment base and equipment foundation of the joint surface must be pad steel plate.
6) According to the requirements of the equipment vibration damping can choose rubber vibration damper or spring damper.
7) The spring damper attached to the fan box should be loosened in time after the completion of equipment installation.
Small exhaust fan installation (V):
Process requirements:
1) exhaust fan wall mounted wire casing length according to the length of the fan or wall thickness.
2) The wall should be load-bearing wall. If the thickness of the wall is greater than the length of the fan cylinder, can be connected to the short pipe at the outlet end of the airflow; such as the thickness of the wall is less than the length of the cylinder, the extra part should be in the indoor side. For load-bearing infill wall, should be set according to the wall thickness of reinforced concrete frame, frame and wall connection structure designed by the structural specialty.
3) installation should be the first fan shell on the electrical junction box removed, moved to the appropriate position on the wall, the power cord through the casing lead to the junction box. Junction box location, buried pipe should be expressed in the electrical construction drawings.
4) Figure 2 applies to the electrical junction box is not removable, but the fan as a whole can be removed from the sleeve of the axial flow ventilator installation.
5) Figure 2 in the cylinder parts are welded, weld height should not be less than the minimum thickness of the welded parts.
6) All metal components of the exposed parts should be clear of floating rust after brushing two anti-rust primer, blending paint two.
7) Figure 1 L value according to the fan type and wall thickness.
8) The installation size in the specification table is adjusted according to the actual situation.
Intelligent:
1, fire alarm standardized practice
Alarm and linkage: different systems, current category of the line is not threaded in the same pipe, line laying choose a different color wire, in the same project in the same category of wire color is the same, the terminal should be marked;
2, standardized practice of the door access control system
Unit Door into the home intercom host: fixed in the unit door or unit next to the side wall, there are conditions all installed on the right side, according to the length of different doorway machine to determine, to ensure that the visual doorway machine camera from the completion of the surface of the 1.5 meters high (the following left figure), the host should be installed in the outdoor waterproofing measures;
Out the door buttons: the bottom of the pre-embedded box from the ground elevation of 1.3 meters, if there is an open pre-embedded with the elevation of the bottom of the wall The horizontal distance between the two is 0.2 meters; the horizontal distance between the pre-embedded box and the door edge is 0.20 meters (if the space is not enough to be placed in the center);
Indoor extensions: the bottom of the pre-embedded box is 1.3 meters high from the ground, and the same elevation of the same wall and the switch panel level is kept consistent with the bottom of the pre-embedded 86 box from the ground with 1.3 meters high; the horizontal distance between the pre-embedded box of the intercom extensions and the switch pre-embedded box is 0.2 meters;
3. p>
3, the standardized practice of intrusion alarm system
The indoor alarm extension buried box and visual intercom indoor extension to maintain the same level at the bottom, 1.3 meters high from the ground, the spacing of 0.2 meters;
Wall-mounted curtain detector buried box at the bottom of the 2.2 meters high from the ground, mounted in the need to guard against the door and window cut vertical side walls, horizontal and need to guard against the door and window side walls spacing of 0.3 meters. The distance between the horizontal direction and the door or window to be prevented is 0.3 meters. The detector cable should be hidden in the detector bracket. If you need to install infrared detectors in front of the door to take the easy way of ceiling installation;
4, TV monitoring system standardized practices
Wall-mounted installation in underground garage, the bottom of the buried cable box 2.5 meters from the ground; ceiling-mounted should be located in the middle of the main channel; unit doorway entrance to the underground garage entrance and exit camera installation location should be considered to avoid backlighting;
5, cable laying and final connection standardization practices Laying and termination of standardized practices
Information box: weak wiring, cable TV, network information *** with a smart box, the bottom of the box from the ground 0.3 m horizontal dark laying, otherwise horizontal or vertical spacing of at least 0.1 m spacing; outdoor installation of the equipment box need to be considered in addition to the waterproofing and heat dissipation;
Pipe wells, underground garages, weak power equipment boxes and power supply boxes and their box material thickness needs to be ≥ 1mm. 1MM, all the equipment in the box are installed in an orderly manner in the equipment box, and fixed in the equipment box floor, all the connecting wires are good permanent marking, tied in an orderly manner.
Prohibit strong and weak power **** slot; wire troughs, wire racks on the cable tie spacing is uniform, tie line buckle neatly, elasticity is appropriate, tie line head should be hidden from exposure;
7, standardized practices in the server room:
The server room foundation floor should be smooth, clean, not dusty, the water content is not greater than 8%, should be swept clean before installation, if necessary, brushing insulating grease or paint on its surface! Antistatic flooring; anti-static flooring should be cleaned and waxed after laying, anti-static flooring should be free of stains, scratches and so on.
Grounding: signal surge protector in the server room grounding, it is appropriate to use a cross-sectional area of not less than 1.5mm2 multi-stranded insulated copper wire, single-point connection to the server room local equipotential grounding terminal board; power lines at all levels of the surge protector (SPD) should be installed in the front end of the power line of the protected equipment, the terminals should be connected with the same name of the line in the distribution box terminal phase line; Surge protector grounding end with the distribution box of the protective ground wire (PE) grounding terminal board connection, distribution box grounding terminal board should be connected to the lightning protection area of the equipotential grounding terminal board; with a terminal power line surge protector should be crimped;
With a terminal surge protector with a line nose and terminal connection;
This article comes from the Internet, the HVAC NanShe Organize and edit.
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