This standard specifies the technical requirements, inspection rules, marking, packaging and storage of AC generators for agricultural tractors and internal combustion engines. This standard applies to AC generators for agricultural tractors, agricultural transport vehicles and stationary internal combustion engines, and other similar machinery can also refer to it. When the generator is working, it must be used in conjunction with the corresponding voltage regulator and work in parallel with the battery. JB/T 6710-1993 Technical conditions for AC generators for tractors and internal combustion engines JB/T6710-1993 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 6710-1993
Alternating current generator for tractor and internal combustion engine
Technical conditions
Published on July 29, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1994
Current-speed characteristics of generator
Cold performance is specified by product technical conditions. Hot performance shall comply with the provisions of Table 1.
JB/T6710—1993
Test voltage
Zero current speed
≤1150
≤1100
≤1150
≤1100
≤1150
≤1100
≤1200
≤1050bzxz.net
1500 r/min
Output current
>25%lg
>30%lg
>35%/g
Test voltage 13.5V and 27V are equipped with electronic voltage regulators, and 14V and 28V are equipped with vibration voltage regulators. Note:
Integrated generator regulator function
At 15V
Rated output speed
≤6000
The cold regulation voltage value is specified by the product technical conditions. When running at rated speed and no-load (disconnecting the battery), the terminal voltage is not greater than 30V (28V generator).
(14V generator))
The hot regulation voltage performance should comply with the provisions of Table 2. Table 2
Test items
Test conditions
[=10%lg（>5A)
n,=2000 r/min
n,=8500r/min
/=10%Ig(>5A)
I,=10%/g
1,=85%/g
Note; The limits in the table are the rated speed and rated current of the AC generator. Rated voltage
Regulated voltage value or adjusted voltage difference 4U
14.2±0.25
Region UI≤0.5
Region UI≤0.5
It should be able to withstand full load dump test 100 times at rated speed and rated current. After the test, the cold performance and hot 3.12.3
regulated voltage performance of the generator should meet the requirements of Article 3.11.1 and Article 3.12.2 respectively. 3 The temperature rise limit of the relevant parts of the generator shall meet the requirements of Table 3. When using other grades of heat-resistant insulation materials or increasing the temperature rise of other parts, it should be specified in the product technical conditions. 2
JB/T6710-1993
4.3 The appearance and installation dimensions shall be checked item by item with the detection measuring tools that meet the accuracy requirements of the appearance drawing. 4.4 The inspection of the metal coating of the parts shall be carried out in accordance with the provisions of JB2864. 4.5 The paint layer inspection shall be carried out in accordance with Article 4.3 of JB/T6697. 4.6 The current-speed characteristic test shall be carried out in accordance with Article 3.1 of ZBT36010. 4.7 Functional test of integral generator regulator 4.7.1 The cold test is to detect the regulating voltage value under the condition of rated speed and 10% rated current (not less than 5A), and the test time shall not exceed 30s.
4.7.2 The hot test is to run the generator at rated speed and rated current until the temperature rise of the regulator is stable, and check the regulating voltage performance. 4.7.3 The load dump test is to run the generator at rated speed and rated current for 10S, and immediately dump the load (including the battery) and turn to no-load operation for 15s, which is one load dump, and it shall be carried out 100 times in total. 4.8 The temperature rise test is to run the generator at rated output speed and rated output current continuously until the temperature rise is stable, and then check the temperature rise of relevant parts of the generator. Temperature rise measurement shall be in accordance with the provisions of Article 4.4 of JB/T6697. 4.9 Overspeed test shall be carried out under no-load operation when the generator is not excited. The integral generator is allowed to remove the regulator for testing. 4.10 Vibration test or impact test shall be carried out in accordance with the provisions of Article 4.6 of JB/T6697 when the generator is not working. After the test, it shall be inspected in accordance with the requirements of Article 3.15 of this standard.
Withstand voltage test shall be carried out in accordance with the provisions of Article 4.7 of JB/T6697. Low temperature test shall be carried out in accordance with the provisions of Article 4.8 of JB/T6697, and after the test, it shall be inspected in accordance with the requirements of Article 3.17 of this standard. High temperature test shall be carried out in accordance with the provisions of Article 4.9 of JB/T6697, and after the test, it shall be inspected in accordance with the requirements of Article 3.18 of this standard. Temperature change test shall be carried out in accordance with the provisions of Article 4.10 of JB/T6697, and after the test, it shall be inspected in accordance with the requirements of Article 3.19 of this standard. The damp heat test is carried out in accordance with the provisions of Article 4.11 of JB/T6697, and after the test, it is checked in accordance with the requirements of Article 3.20 of this standard. The protection level test is carried out in accordance with the provisions of GB4942.1. The rotors, brush holders and regulators of the three generators are interchanged, and the cold performance and adjustment voltage value of the generator are checked after assembly, which should meet the provisions of Articles 3.11.1 and 3.12.1 respectively. 4.18 Durability test
4.18.13000h bench test, the generator is operated under the conditions of rated speed and 2/3 rated current output, and the continuous operation time each time is not less than 4h, and the cumulative operation time is 3000h. After 2000h of the test, it is allowed to replace the brushes and maintain the collector rings once. 4.18.2 High temperature and high speed test: It is carried out in accordance with the conditions specified in Table 5, and the continuous test time each time is not less than 4h, and the cumulative operation time is 200h. After 150h of the test, it is allowed to replace the brushes and maintain the collector rings once. Table 5
Temperature in the box
Test speed
2ng（>8500)
85%~90%)Ig
Test time
The salt spray test and mildew growth test of the wet heat type generator shall be carried out in accordance with the provisions of Article 4.12 and Article 4.15 of JB/T6697. 5 Inspection rules
5.1 The factory inspection shall be fully inspected in accordance with Articles 3.3, 3.4, 3.11.1 and 3.12.1. Only after passing the inspection can it be shipped out of the factory, and a product certificate shall be attached. 5.2 Users can accept according to the provisions of GB2828. The acceptance items and qualified quality levels are shown in Table 6. This standard stipulates:
a. General inspection level: Ⅱ;
b. Sampling plan: normal inspection one sampling plan. 4
c. Product model;
d. Technical data: voltage, V; current, A; e. Manufacturing date or code.
JB/T6710-1993
6.2 When packaging the product, moisture-proof, vibration-proof, and dust-proof should be considered to meet the requirements of transportation and loading and unloading. 6.3 The packaging box should be firm and the product should not move in the box. Generally, the total weight of each box after packing does not exceed 50kg6.4 The text and logo on the outer wall of each packaging box should include the following:6.4.1 Shipping text and logo: name and address of the receiving unit, product name, product model, quantity, shipping unit and address. Text and logo for transportation and storage operations: total weight of each box, "handle with care", "vibration-proof", "moisture-proof", "corrosion-proof". 6.4.2
6.5 Technical documents accompanying the product:
a. Packing list;
b. Product factory certificate;
c. Instruction manual.
During storage, the product must not be exposed to moisture, corrosion, heavy pressure, collision, acid, alkali and other corrosive substances and organic solvents. 6.6
Additional instructions:
This standard was proposed by the National Technical Committee for Tractor Standardization. This standard is under the jurisdiction of the Luoyang Tractor Research Institute of the Ministry of Machinery Industry. This standard was drafted by Kaifeng Internal Combustion Engine Electric Factory. The main drafters of this standard are Su Guoshun and Wang Jinliang6
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