2.3.2 the civil engineering is basically completed and the door and window glass is installed.
2.2 main machines and tools: chain hoist, gantry, rope buckle, bench drill, grinding wheel, electric hand drill, coupling ejector, bench vice, oil pressure pliers, wrench, electric hammer, plate file, hammer head, steel ruler, round steel threading plate, electric welding machine, steam welding tools, feeler gauge, level gauge, tachometer, megger, multimeter, caliper ammeter, electric measuring pen, bell test and electronic thermometer.
In general places, all places with dust, many fibers and fire hazards in wet places are flammable For all corrosive gases and places with steam erosion in explosive hazardous areas, protective motors, drip proof motors and enclosed motors with moisture resistant insulation, explosion-proof electric secret sealed motors and acid resistant insulation motors, 3.4.2 it shall be reviewed whether the installation position of the motor meets the convenience of maintenance, operation and transportation.
3.3.2 the performance of the motor shall meet the requirements of the working environment around the motor, and the motor selection shall comply with the provisions of table 3.3.2.
3.4.6 generally, the number of stably installed motor gaskets shall not exceed three.
2.1.2 the capacity, specification and model of the motor must meet the design requirements, with complete accessories and spare parts, and factory certificate and relevant technical documents.
3.
3.4.13 the motor wiring shall be firm and reliable, and the wiring mode shall be consistent with the power supply voltage.
The full height of perpendicularity of the pulley of motor and transmission device shall not exceed 0.5mm, and the corresponding grooves of the two wheels shall be in the same straight line.
3.4.10 installation of brush holder, brush holder and brush; 3.4.10.1 the same group of brush holders shall be evenly arranged on the same straight line; 3.4.10.2 the arrangement of brush holders shall generally make a pair of adjacent brush holders with different polarities staggered from each other to make the commutator wear evenly; 3.4.10.3 each group of brushes shall be adjusted on the electrical neutral line of the commutator; 3.4.10.4 the sharp angle of the brush with inclination angle shall be opposite to the rotation direction; 3.4.10.5 the connection between brush and copper braided belt and the connection between copper braided belt and brush holder shall be good.
3.4.14 after the motor is installed, several turns of manual rotation test shall be carried out.
Each side of the foundation shall be 100 ~ 150mm beyond the edge of the motor base.
3.3 inspection before installation 3.3.1 the following inspection shall be conducted before motor installation: 3.3.1.1 the motor shall be intact without damage.
3.4.8 when gear transmission is adopted, the center line of circular gear shall be parallel, and the contact part shall not be less than 2 / 3 of the tooth width.
3.4.12 when the bearing pedestal of high-voltage synchronous motor is insulated, the insulation resistance shall be measured with a 1000V megger and shall not be less than 1m Ω.
3.3.1.2 the iron core, rotor and Journal of the motor shipped in boxes with stator and rotor shall be complete without corrosion; 3.3.1.3 accessories and spare parts of the motor shall be complete without damage.
2.1.5 bolts: except for the bolts for motor stable installation, galvanized bolts shall be used, and corresponding galvanized nuts, flat washers and spring washers shall be equipped.
3.4 motor installation: 3.4.1 motor installation shall be operated by electricians and fitters.
2.1.4 the profile steel of various specifications shall meet the design requirements, and the profile steel shall be free of obvious corrosion.
Selection of motor type Table 3.3.2 the serial number installation site adopts motor model 12345.
3.4.7 the center lines of motor shaft and transmission device shaft driven by belt shall be parallel.
2.1.3 the control, protection and starting auxiliary equipment of the motor shall be matched with the motor, and shall be provided with nameplate, indicating the manufacturer’s name, factory date, specification, model, factory certificate and other relevant technical data.
2.
3.4.9 when coupling drive is adopted, the allowable axial and radial errors shall not be less than 0.05mm for elastic connection and 0.02mm for rigid connection.
The rotor shall be turned lightly without jamming and abnormal sound.
2.3.3 rain proof measures shall be taken for motors installed outdoors.
3.5 motor core pulling inspection: 3.5.1 if the motor has one of the following conditions, it shall be subject to core pulling inspection: 3.5.1.1 the ex factory date exceeds the protection period of the manufacturer; 3.5.1.2 the quality is suspicious after visual inspection or electrical test; 3.5.1.3 open motor is suspicious through end inspection; 3.5.1.4 abnormal conditions during test run; 3.5.1.5 for AC motor with capacity of 40kW and above, core pulling inspection shall be conducted before installation..
The bolt holes of coupling connected with each other shall be consistent, and the nut shall be equipped with anti loosening device.
Operation process 3.1 process flow: equipment unpacking points → inspection before installation → motor installation → core pulling inspection → motor drying → control, protection and starting equipment installation → inspection before trial operation → trial operation and acceptance 3.2 equipment unpacking points: 3.2.1 equipment unpacking points inspection shall be carried out jointly by the installation unit, supply unit and construction unit, and records shall be made; 3.2.2 check the specification, model and quantity of equipment, accessories and spare parts in detail according to the equipment supply list and technical documents; 3.2.3 the appearance inspection of motor body, control and starting equipment shall be free of damage and deformation, and the paint shall be intact; 3.2.4 the motor and its auxiliary equipment shall meet the design requirements.
shall have product certificate.
The gasket shall be in close contact with the foundation surface.
3.4.5 the anchor bolt of the motor shall be firmly integrated with the concrete foundation.
When large motors need to be transported and hoisted, riggers shall cooperate.
3.4.3 generally, the motor fixed on the foundation shall have a maintenance channel of no less than 1.2m.
The reserved hole shall be cleaned before pouring.
2.1.6 other materials: insulating tape, welding electrode, antirust paint, ready mixed paint, transformer oil, grease, etc.
The bolt itself shall not be skewed, and the mechanical strength shall meet the requirements.
Scope this construction standard is applicable to the installation of fixed AC, DC and synchronous motors and their auxiliary equipment in electrical installation engineering of general industrial and civil buildings.
With material certificate.
The center line of bevel gear shall cross according to the specified angle, and the bite degree shall be consistent.
The secondary grouting shall be carried out after the installation of motor base.
basis standard: unified standard for construction quality acceptance of building engineering and code for construction quality acceptance of Building Electrical Engineering 1.
Construction preparation 2.1 equipment and material requirements: 2.1.1 the motor shall have a nameplate indicating the manufacturer’s name, date of delivery, motor model, capacity, frequency, voltage, current, wiring method, speed, temperature rise, working method, insulation grade and other relevant technical data.
3.4.15 the protective grounding (or neutral connection) of motor shell must be good.
2.3 operation conditions: 2.3.1 the construction drawings and technical data are complete.
2.3.5 the motor installation site shall be cleaned and the road shall be unblocked.
3.4.4 when cement foundation is adopted, if there are no design requirements, the foundation weight is generally not less than 3 times of the motor weight.
Installation and construction standard of motor and its auxiliary equipment I.
2.3.4 the position and size of motor foundation, anchor bolt hole, channel and cable duct shall meet the design quality requirements.
3.4.11 for motors shipped in boxes with stator and rotor, when installing the rotor, the lifting rope shall not be tied to the slip ring, commutator or journal.
2.3.6 the motor drive equipment has been installed and passed the preliminary inspection.
