Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T9528-1999
Prime mover
Arc welding generator set
Prime mover + arc welding set
1999-08-06 Issued
National Machinery Industry Bureau:
2000-01-01 Implementation
JB/T9528-1999
This standard amends ZBJ64007-88 "Prime mover, arc welding generator set". This standard is in accordance with the requirements of GB/T1.1-1993 and GB/T1.3--1997, and only makes editorial changes to ZBJ64007-88. This standard will replace ZBJ64007-88 from the date of implementation: This standard is proposed and managed by the National Welding Machine Software Standardization Technical Committee: This standard is issued by: Shanghai Huadong Electric Welding Machine Factory, no pot electric floating machine! , Wuhan Electric Welding Machine Factory Drafters of this standard: Lin Xianghua, Xie Jiyao, Scope
Machinery Industry Standard of the People's Republic of China
Prime Movers
Arc welding generator sets
Recommended ZD J64 007-88
This standard defines the technical performance, safety requirements, inspection methods, inspection rules, packaging, transportation and storage of generators with internal combustion engines as prime movers.
This standard applies to generator sets with internal combustion engines as prime movers (hereinafter referred to as units) under general sales conditions. The internal combustion engines can be gasoline engines or diesel engines.
This standard does not apply to arc welding generator sets with internal combustion engines as prime movers. Cited standardsbZxz.net
The provisions contained in the following standards shall be construed as technical standards through explicit reference in these standards. When the standard is published, the version shown is valid. The standard will be cancelled. However, the parties using this standard should consider the possibility of using the following standard to update the version: GB/T 1859-1989 GB/T 2423.4-1993 GB4208-1993 GB/T [0249-[988
GB/T[3306-1991
3 Standard
Internal combustion engine noise level test method Basic environmental test procedures for electrical and electronic products Test Db: Alternating heat test method [e[E60068-2-301980]
External protection level P standard (60529:1589) Welding machine type admittance measurement method
This standard adopts the following definitions:
3.1 Transient
Transient is the reaction of the load under sudden changes in the load. The transient value is not the set value, but changes randomly above or below the set value.
3.2 Adjustment rate
The speed is the difference between the rated speed and the speed under any condition of load. This difference is expressed as a percentage of the rated speed.
3,3 Recovery time
Recovery time is the time from the rated speed leaving the specified steady state band until it returns to and remains within the specified steady state range due to the total change of load. These definitions are also used for the recovery time of voltage and speed. 34 Check state
Running state is the operating condition when the load remains unchanged after the transient state has stabilized: Approved by the State Machinery Industry Bureau on September 6, 1999 and implemented on January 1, 2000
4 Model
According to the relevant provisions of GBT10249.
5 Specifications and parameters of the unit
The specifications and parameters of the unit are shown in Hui 1.
Pading welding spot
Rated negative continuous value
:00. 60, 35. 201-
JE/9528-1999
Coal connection power consultation market standard
Note: If the user wants to install cellular axis auxiliary power, the manufacturer should make a separate agreement with the user. 1) Only for portable use:
2) The effects in the table are only suitable for one month.
Usage conditions
The unit should be able to work normally under the following conditions. 6.1
Weight and air humidity range
Gasoline engine
Diesel engine
- 5-40°℃
-5-+40%
Ambient air temperature To ensure the oil quality of the oil-cutting machine, the ambient air temperature of the motor is allowed to be -10~+40°C. 6.2 Relative explosiveness of air
at 0 hours
at 20 hours
≤90%
6.3 The altitude shall not exceed 1000m
The working period shall be
1o. Continuous
Technical requirements
JE/T 9528—1999
1.1 The insulation resistance between the conductive part of the arc welding generator and the casing and the cable group should not be less than 2.5M1; 1.2 The insulation between the winding of the arc welding generator and the casing and the cable group should be able to withstand the dielectric strength test of 1500V and 5 hours Tmin without flashover or breakdown. Step:
The dielectric strength test voltage of the dynamic magnetic winding of the three-stage generator should be 10 times the rated excitation voltage, but the minimum is 1500V. The test voltage is an actual sine wave with a frequency of 50. 3 The inter-turn insulation of the main winding of the arc welding generator should be able to withstand the dielectric strength test voltage of 5 hours Tmin without breakdown. The test is carried out in the empty state, and the induced voltage of the test is 130% of the no-load voltage. 7.4 The load voltage of the unit is set when the unit is in the hot state. Negative micro voltage and welding bird current should be equal to the following provisions: a) For manual arc welding with covered electrodes, when 600A, U,-20+0.04
I>600A, U44v
For IG welding, when 1,=600A, U=10+0.041
[600 A, U,=34 V
) For MIG/MAG welding, when l≤600A, U,=14+0.05z
1,>600 A, U,=44 V
d) For arc welding, the falling characteristic
and the flat characteristic
are connected to a) the fixed current b) the prescribed formula A: [a—
welding current, A:
U— negative voltage, V
7.5 Within the welding current adjustment range, the voltage of the DC arc welding generator shall not exceed the DC average value of 100V: the voltage of the AC arc welding generator shall not exceed the effective value of 80V: .6 The welding current shall be adjusted within the range of small value to large value, and a welding current indicating device shall be installed, and its accuracy shall be [0% of the calibrated value. If equipped with an ammeter with appropriate damping [2.5 level]. The final welding current indication degree is not assessed: 77. For machines operating under rated conditions, the temperature rise rate of the teeth caused by the abnormal drop in the cold and hot state change rate of the welding generator's load characteristics should not be greater than the following: 7.8. The temperature rise limit of each part of the power supply in the unit shall comply with the following regulations under rated welding current and rated load duration: The temperature rise of each part of the unit shall not exceed the values specified in Table 2. Part
World energy
armature winding
series or with the same pole
single end
burning connection
iron core
and other zero
commutator and slip
A insulation block
JET9578—1999
risk limit caution
E no continuity
F suction block
H suction
commutator or added ring wet dumplings are suitable for ball type thermometer measurement The energy value obtained, when the reference figure is 90K and 1G0K, the brush running level is different
2 torque method (R) and overflow method T) different leaves use and phase air) cooling water: the allowable group temperature required by the shaft (when the ambient temperature does not exceed 40℃) is less than 95: the allowable temperature of the battery is less than 105:) microfluidic components, component groups, etc. meet the relevant standard requirements and can be. 9 static external characteristics
a) The power supply with the drop characteristics is within the normal welding range. When the power is fully increased, the voltage drop is greater than or equal to 7V gate 00 A equal power supply in the positive flow welding, when the voltage is increased, the supply drop is less than A or the voltage is increased by a small hand or equal to 10VJ00A
0 dynamic installation of the machine is tight, the welding bottom is stable and there is no sign of burning on the welding bottom surface. 7.11
The internal combustion engine in the unit should meet the requirements of Table 3. Table 3
, 12 The unit should have 2 successful starts in three times, %
7.13 For the specially equipped speed-loading units, after the load is removed, the speed should be automatically reduced to a preset value below the rated value after a predetermined delay. The delay time and preset value are specified by the enterprise standard. 14 For the units equipped with an outer cover protection structure, the outer shell protection level shall meet the requirements specified in 1P23 of the B4208 outer protection level [health code], and the shell structure of the generator in the core shall meet the IP2! requirements. After the unit is tested, its insulation resistance shall not be lower than that specified in Article 7.1.
T, 15 The welding generator in the unit shall be operated in accordance with the provisions of GB/T2423.4. After 41, the coil should be able to withstand ?0% of the dense dielectric strength test, which lasts for 70 minutes without breakdown. 7.16 The unit can be fixed or mobile, and its structure should be able to work normally when the inclination angle is less than 10°. At this time, the auxiliary temperature should still meet the requirements of 7.8b).
JB/T9528-1999
17 The speed of the internal combustion engine in the unit should comply with the output current of the arc welding generator under normal load conditions. The internal machine should be able to withstand the changes between maximum load and no-load, and have no harmful effect on the welding performance of the welding generator. 7.18 Various safety devices installed on the engine should ensure normal operation under specified conditions. All oil generators equipped with speed control and speed limiter shall be able to automatically stop oil supply or air intake when the speed reaches 110%-115% of the rated speed. 7.19 The unit shall be equipped with a device for storing welding cables. The cross-section and length of the matching parts, spare parts, accessories and welding cables for the machine shall comply with the enterprise standards.
7.20 All wires and terminals of the unit shall be properly marked and easy to identify. These marks shall remain clear after continuous use and repair: The control line shall be fixed on the unit and shall remain clear during the service life. 7.21 The welding cable of the unit shall be able to withstand the tensile test of 40N/mm after installation. The maximum tensile force applied to the dry core is 2000N, and the cable shall not be disconnected or loose. The headers, sockets and couplers used for the welding cables of the unit should be completely inaccessible after connection.
7.22 The rotation direction of the high-current machine should be indicated, and the output line should be clearly marked with "+" and "-", and correspond to the indicated rotation direction. For units equipped with polarity change switches, there should be "positive" and "reverse" switches, the former can indicate the polarity of the latter, and the current output end of the AC unit should be marked with a "+" mark. 7.23 The components of the same model and specification of gray units should have good interchangeability, and the enterprise standards for interchangeable parts, components and assemblies stipulate: 7.24 The paint layer of the unit should be uniform, glossy and smooth, and should not have cracks, peeling, condensation, pre-marks and scratches: 7.25 The coating layer of non-ferrous metal parts such as the welding motor in the unit, except for the friction matching parts: all comply with the relevant standards.
26 The structure of the unit should ensure that it can be lifted and transported. It must have a lifting cover and a hand-pushed transporter. 7.27 The unit that can be towed should have a brake device. The brake device should not move on the slope after braking on a 15° slope. 7.28 The unit driven by a car and lifted by a trailer should be tested for driving. During the driving process, the distance and speed should be tested according to the enterprise standards. The driving test should be carried out for the unit to run continuously for 1 hour under the rated state without any abnormal situation. 7.29 The fuel tank of the engine should be small. For units with a connection current of 250A and above, it should be able to ensure continuous operation for 8 hours under a certain state. For units with a rated welding current of 200A and below, it should be able to ensure continuous operation for 4 hours under the rated state. .30 For units running under rated conditions, the unit noise level is measured by a local sound level meter. The noise limit is 3 or 5 dB higher than the sound power level of the transformer (the unit with a tail current lower than 3.15A increases by 5 dB, and the unit with a tail current lower than 3.15A increases by 3 dB). The body limit values are specified in the following standards:
7.31 The welding test of the unit shall be specified by the enterprise. 8 Inspection method
B, insulation resistance measurement
The insulation resistance of the windings to the machine and each other shall be measured before the dielectric strength test. A 500V DC is applied at room temperature for measurement. The data shall be taken after the test. During the adjustment, the rectifier and its protection devices that cannot withstand the test voltage may be short-circuited or removed. 8,2 The actual sinusoidal waveform voltage of 50Hz shall not exceed half of the specified voltage value at the beginning of the self-strength test. After aging! 05, then rise to the full value for 11min, and then reduce the voltage before cutting off: During the test, there should be no flash or breakdown or current exceeding 10mA: For units with rectifier groups, the rectifier group should be properly connected to the secondary circuit during the test, and the components that cannot withstand the corresponding test voltage should be short-circuited or removed. JT9526-1999
This test should not be repeated. If it is necessary to repeat it under special circumstances, 80% of the specified test voltage should be used as the test voltage: During factory inspection, it is allowed to be run in a cold state, and the duration of full voltage is 5s. This test should be carried out before installing the prime mover. 8.3 System group dielectric strength test
Type inspection should be carried out at a temperature close to normal working temperature. When the test voltage is increased to 130% of the maximum no-load voltage, the rated speed is allowed to be increased at the same time, but it should not exceed 115% of the rated speed or the speed specified in the overspeed test. The allowed increased speed value should be specified in the enterprise standard. For the welding generator with a light magnetic pedal, when the speed is increased to 115% and the excitation current is increased to the allowed limit, if the induced voltage still cannot reach the specified test voltage, the test is allowed to be carried out under the rated output voltage that the vehicle can reach. After the time lasts for 511, the inductive current can be disconnected after it reaches the rated value: and check whether all parts are damaged. 8.4 Load voltage measurement
In each gear range, measure the maximum voltage of the generator box. During the type test, the generator and no-load characteristic test are also carried out. When the generator is running at a fixed speed, the relationship between the return voltage and the fan current is also measured. During the test, gradually increase the generator's magnetizing current until the current is equal to 130% of the rated value. A total of 9-11 points are measured, of which a few points should be measured around the rated no-load voltage, and then gradually reduced to magnetizing current. When the voltage and excitation current are returned to the equal position, the voltage and excitation current values should be set at each point, and the characteristic curve should be drawn. The actual equal city characteristics should be collected. The half mean value of the load should be collected: the inductor of the generating process is slightly saturated, and the armature current cannot be modulated to the selected value, then it should be adjusted to the maximum voltage that can be achieved: the minimum current should not be greater than 2.5 times the rated value, so as to avoid excessive heating of the magnet. 8.5 Current regulation range measurement
In the natural state, the generator maintains the rated speed. According to the provisions of the current regulation range, the welding must be moved to the maximum and minimum positions, and the load distribution value is changed to achieve the corresponding load transmission and welding power. 8.6 The measurement of the rate of change of the voltage or current in the cold and hot states shall be carried out on a fixed current setting. The generator shall be kept at the rated speed and run at the corresponding negative voltage duration rate until the state is reached. After the hot voltage or current is measured, the negative voltage shall be kept unchanged under this setting. When the engine is cooled to the temperature of 0-85% and the oil is 70-75℃, the cold voltage or current shall be measured again. If the internal combustion engine fails to reach the above temperature, the components shall be placed in a disconnected state during heating. However, for self-excited excitation windings that cannot be disconnected, it is allowed to be measured without disconnection.
The rate of change of the welding voltage and current shall be calculated according to the following formula. A-
Where: - welding current of the unit in cold state, A: 1 - welding current of the unit in operating state, A; - cold, standing current change rate
The voltage change rate in cold and hot states is calculated as follows: AL
JU,-us
Where:
JB/T9528-1999
The load voltage of the unit in reduced state, V:
U—The load voltage of the unit in potential state, Y:U - cold and hot voltage change rate,
8.7 Negative regulation rate determination
In the rated load condition, a full load test of the case is carried out. During the test, the following items shall be measured: a) Rated load before (or after) the test:
The generator speed before the sudden change;
C) The maximum (or minimum) instantaneous speed when the rated load is changed; d) The speed after the rated load is changed
e) The time from the sudden change of the rated load (or speed) to the stable speed. The above test shall be repeated once, and the instantaneous speed (%) and the stable speed (%) shall be calculated by the following formula respectively, and the average value of the three tests shall be obtained respectively!
In the test: n—the speed before the sudden change, {min;09
n—the maximum (or minimum) instantaneous speed when the sudden change is set: n, the stable speed after the rated load is changed, rnin: rated speed, i
33 Appearance of the unit
According to 7.19, 7.20, 7.22, 7.21, 7.25, 7.26. After the new machine is tested, check the working conditions of the indicating devices on the control box, check whether the electrical auxiliary instruments are flexible and normal, and whether the signal components are working properly.
&.9 Performance test
The various starting measures (excluding low temperature starting measures) installed on the unit are tested under protection. Test brush, start the unit 3 times, the time interval shall not be less than 2 seconds, and start 2 times continuously per unit. For non-manual starting units with diesel prime movers, the starting time for each time is 1s: For manual starting units with gasoline prime movers, the starting time for each time is 3s: For units with gasoline prime movers, the starting time needs to be changed to [058.10 Temperature rise test
The unit should be new, dry and assembled! When installing the measuring device, only the entrance is allowed to pass through the positive pole, detection door or side panel with convenient opening provided by the manufacturer. The measuring device used should not hinder the positive ventilation of the unit or cause heating or heat dissipation. The ventilation status should be consistent with the normal use status. 8.10.1 Test method for winding temperature rise
During the test: it is allowed to open the exhibition door that must be opened when in use. The machine distance should be kept within the range of +10-+40℃. The measured temperature rise limit should not exceed the provisions of Table 2. For units with two or more columns that can obtain rated current under normal negative voltage, the maximum heat generation test should be carried out. The current adjustment device should be placed in the rated welding current position, and the negative voltage should be adjusted to make During the test period, the required welding current shall be maintained. During the entire test, the change of the load voltage point shall be within ±5% of the rated load voltage; the time error of the working cycle shall not exceed ±2%, and the load used shall be a non-inductive resistor: The temperature rise test of the unit winding is divided into the following two categories; a) For units whose rated welding current is the maximum welding current, only the temperature rise test is carried out at the rated no-load duration corresponding to the rated welding current: b) For units whose rated welding current is less than the maximum welding current device, in addition to the temperature rise test at the rated welding current, a temperature rise test is also required at the corresponding load duration rate. Test b can be immediately followed by option 3 without restoring the unit to the ambient air temperature. The conversion of negative load duration is calculated according to the following formula: x* -x -{
—Rated load duration rate:
Where: X-
1—Nitrogen-rated welding current, A;
x—Rated test current duration rate:—Test unit is connected to the power supply, A=
For the test of temperature wear in the solid environment, the following position should be used to measure the temperature.】
In the case of natural air cooling, the temperature meter is placed halfway away from the test unit, and the unit is 1-2m away from the operating temperature And it should be consistent with the heat radiation and ventilation device.
In the case of forced air cooling, the temperature rise test should be carried out at the location of the cooling system at the air inlet: Under the above two conditions, if the ambient air temperature is constant or changes very little, the half mean of the two temperatures measured at equal time during 1/4 of the test duration can be selected as the standard temperature: If the ambient air fluctuates violently during the test, all necessary protective measures should be taken to avoid the temperature difference of the test unit caused by the change of the ambient air.
The temperature rise test should be carried out until the temperature rise rate of any part of the unit does not exceed 2 hours per hour. 10.1.1 Determination of the temperature rise test of the unit in the whole state. After the temperature rise test is completed, the whole unit should be reversed as soon as possible to accurately record the time of the sequence. The data measured within 1-2 minutes after the sequence should be as good as possible.
If the temperature is turned off for a period of time after the sequence, When these lines are connected, if the readings continue to drop, then the temperature at this time is extrapolated from the load to the shutdown time, and the temperature at this time is the shutdown temperature of the unit. Under normal machine conditions, the shutdown time is the midpoint of the load (see point A in Figure 1). During the test, the speed, no-load voltage, welding current, magnetizing voltage and exciting current of the excitation unit, water temperature, and oil pressure are recorded every half an hour. The temperature rise () of the energy unit can be determined by the following formula: AR.-r (K+, Iti-
In the formula, R is the hot state resistance of the burning group at the end of the test, n: R is the actual cold state winding resistance, H1
t——actual cold state winding temperature, C; t——the temperature of the cooling medium at the end of the test, E constant. For pot K=235, for aluminum K-228.8
JB/9528-1999
If the resistance method cannot be used, a thermometer can be placed near the surface hot spot at the measuring position for measurement. When measuring the highest temperature, a resistance thermometer can also be used instead of an alcohol thermometer or mercury thermometer, but this instrument should be able to transmit a standard thermometer with a diameter of not less than 5 mm. The water ball of the source thermometer can pass through the hole. In the presence of an alternating current field, it is not necessary to use a mercury thermometer. Note: It is not necessary to use two methods (thermal method and electrical method) to measure temperature at the same time; only one method is selected to measure the root rise of a single component. The time-temperature curve (the rate diagram is drawn under X-60) B.10.1.2 Determination of DC resistance under actual cold state. Expose the unit to internal potential for a period of time, and measure the surface temperature of the ceramic or core with a thermometer. The difference between this temperature and the ambient temperature is not more than +3, which is the actual unit temperature under cold state. (When the temperature seat cannot be directly measured, the unit should be static in the air for not less than 8h. At this time, the ambient temperature can be used as the temperature control of the unit winding. Then select the DC resistance measurement: use a double bridge to measure the resistance of the system group if it is below 12, and use a single bridge to correct it if it is above 11. The resistance measured by the single bridge should be corrected by the connected resistance. If the shielding set is connected to other natural gas groups, the filter should be removed and the porcelain group should be measured three times separately, and the resistance should be calculated as the average value of the three times (the ratio of the difference between the measured value each time and the average value to the average value shall not be greater than 0.5%). 9.10.2 Bearing temperature rise test
For the unit in horizontal position, the following two false tilting position tests are carried out: a) Tilt [0°, generator end at the bottom; 6) Shaft tilt [0°, generator end at the bottom: In each of the above two tilting positions, the unit is operated at rated speed for 30 days. The bearing temperature rise shall comply with the provisions of 5.8b, and there shall be no bearing failure and no slippage. 8.1L Static and external characteristics determination
The static and external characteristics determination shall be carried out at the rated welding current, minimum welding current The current and 50% of the rated welding current are measured at three positions: a) The falling characteristic should be measured from no-load to short circuit, and the load resistance should be adjusted to make the reading not less than 8 points, record the output voltage and current of each measuring point, and try to draw the external characteristic line: b) When measuring the static characteristic curve, gradually increase the voltage to the rated value, and then adjust the load resistance in the range of 20%~100% of the rated welding current, so that the reading is not less than 8 points, record the output voltage and current of each measuring point, and draw the static characteristic curve.
S.12 Humidity test
For the damp heat test, the generator should be kept outdoors for no less than 8 hours. The environmental conditions and methods are as follows: Test solution E/528-1999
The electrical performance is measured within the requirements specified in Table 7.15. The test items and test conditions are specified in the enterprise standard: After the test is completed, the recovery and recovery conditions are as follows: temperature 15-.35%℃, relative humidity 2%-78%, air pressure 6-106a, the time the generator is taken out of the test room and put into the waste chamber cannot exceed 10min, the temperature difference between the two chambers cannot exceed 10%℃, and the performance is measured after 1-2h recovery treatment. The measurement should be completed within 30min. After the test, the generator shall be inspected for appearance:
&13 Protection performance test
813.1 Waterproof, waterproof, finger test and ball test shall be carried out in accordance with the provisions of IF23 and IP21 in GB4208 respectively. 8.13.2 For the units equipped with cable and socket, also the system coupler and its micro coupler, the maximum pull applied to the core is 2000N, and the test force is gradually increased from 0 to the specified compensation each time, and the duration is not less than 1s.
Each cable can be tested: the cable shall not be disconnected from the connector: the pressure of 2.5m, and the standard electric part of 3N shall be verified: 8.14 Braking test
The traction machine can be tested on a hard slope of 15 degrees, when the vehicle is braked. Without releasing the power, the 815 welding test
for the lower peak comparison of the two parts, the state 1507 welding rod is carried out on the carbon steel electrode. In normal years, the medium is set, and the extension is completed, the electric extension can generate combustion benefits. The system determines the research
Liu Ping power supply benefits TIG Tan unit sub-planning replacement test method step solid classification special standard regulations: 8.16 Sound absorption test
The sound absorption test shall be carried out in the test room or in the ordinary test room or outdoor venue specified in GB: 1859: For outdoor test, the test shall be carried out in the room within 25 square meters of the test center, without any large points such as buildings. The noise level of the surrounding environment (including wind noise) should be 10° lower than the specified noise level, and ensure that the measured noise is not affected by other accidental noise sources. In order to avoid the influence of wind noise, a windproof device can be used, but the influence of windproof device should be paid attention to. The unit should be operated under the full load and positive belt condition. When measuring and recording the unit noise, the final measuring point of the meter shall be A-level meter, with the two points with the maximum noise rate as the similar points. The average reading of each point shall be 10°, and the difference between the readings shall not be greater than 2°. Otherwise, the main measuring point shall be set at 1m from the unit and half the height of the unit. The noise reporting module of each measuring point shall be taken into consideration. Half mean value of production load:
8.17 Running test
Running test should be carried out in reverse after factory test
After the unit driven by automobile and trailer is filled with fuel, lubricating oil and water, the running test is carried out on the intermediate road surface of third-class highway. The components and parts in the unit should not be damaged: the sets, welding and rivets should not move or fall off; the water (anti-stale coolant) should not be lost: there should be no dust in the compressor: the electrical connection should not be disconnected. 9 Inspection rules
9.J Inspection quantity and load current requirements are as follows: a) For type inspection, not less than 0.5%; 51 For factory inspection, not less than 1%:
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