This standard specifies the technical requirements, inspection rules, marking, packaging and storage of electronic voltage regulators for alternators used in agricultural tractors and internal combustion engines. This standard applies to regulators for alternators on agricultural tractors, agricultural transport vehicles and stationary internal combustion engines. Regulators for alternators for other purposes can be used as a reference. The regulator works in conjunction with the alternator and battery to keep the generator output voltage within the specified range. JB/T 6709-1993 Technical requirements for electronic voltage regulators for alternators used in tractors and internal combustion engines JB/T6709-1993 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T6709-93
AC generators for tractors and internal combustion engines
Technical conditions for electronic voltage regulators
Published on July 29, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1994
The hot performance of the regulator shall comply with the requirements of Table 2. Test items
JB/T6709~93
Operating condition of generator during test
[=10%x(≥5A)
8;=2000r/min
nz=8500r/min
I=10%I(≥5A)
[,=10%I
Rated voltage
Adjust voltage value or adjust voltage difference AU
14.2±0.25www.bzxz.net
IAU≤0.5
Note: The and in the table are rated current and rated speed of AC generator. The regulator should be able to withstand 100 times of full load dump test of AC generator. After the test, the performance of the regulator should comply with the provisions of Article 3.10. 3.11
The saturation voltage drop of the output pole of the regulator should comply with the provisions of Table 3. Table 3
Ig(av)
Note, DC working current is the maximum average value of the AC generator field current. The freewheeling diode voltage drop of the regulator shall comply with the provisions of Table 4. 3.13
DC working current Is(AV)
Freewheeling diode current
Freewheeling diode voltage drop
14V
The regulator shall be subjected to fixed frequency vibration test in three directions of up and down, left and right, and front and back, and swept frequency vibration test or impact test in up and down direction. JB/T6709-93
The load current is reduced to 10%Ix (not less than 5A), and the thermal performance of the regulator is tested. a
Internal grounding
External regulator
Internal grounding
Internal regulator
Figure 1 Test circuit diagram
External grounding
d External grounding
4.7 Load dump test Run for 10s at the rated speed and rated current of the equipped AC generator, then immediately dump the load (including the battery) and switch to no-load operation for 15s. This is one load dump, and it is carried out 100 times in total. 4.8 The output pole saturation voltage drop test circuit is shown in Figure 2. The input variable voltage U is equal to 13V (referring to 14 volts) or 26V (referring to 28 volts). The resistor R is adjusted so that the ammeter indication value reaches the specified value of I in Table 3 of Article 3.12. The time is not more than 30
外措铁
, and then the output pole saturation voltage drop U.. is measured. Test D
内措铁
Figure 2 Schematic diagram of output pole saturation voltage drop test
4.9 The freewheeling diode voltage drop test circuit is shown in Figure 3. The resistor R is adjusted so that the external DC current reaches the specified value of Table 4 of Article 3.13, and then the voltage drop U of the regulator freewheeling diode is measured. The test time is not more than 30s. External ground
Figure 3 Schematic diagram of freewheeling diode voltage drop test
Internal ground
JB/T6709-93
6.4 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 consignee, product name, product model, quantity, shipping unit and address. 2 Text and logo of transportation operation; total weight of each box, "handle with care", "anti-vibration", "moisture-proof", "anti-corrosion"6. 4. 2
6.5 Technical documents accompanying the product when it leaves the factory:
Packing list;
Product factory certificate;
Instruction manual.
During storage, the product must not be exposed to moisture, corrosion, heavy pressure, collision, and must not come into contact with corrosive substances such as acids and alkalis and organic solvents. 6.6
Additional instructions:
This standard is 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 the Shanghai Automotive Electrical Appliance Factory. The main drafters of this standard are Mi Huiping and Shen Xingzu.
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