JIS Z 8703 PDF
December 20, 2019 | by admin
Find the most up-to-date version of JSA – JIS Z at Engineering JIS Z Standard conditions of the test site. Standard Atmospheric Conditions for Testing 1. This standard application range, the temperature of the . JIS Z Standard atmospheric conditions for testing (FOREIGN STANDARD). standard by Japanese Industrial Standard / Japanese.
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Take the test specimen out of the chamber and keep it for 2 hours or more under room temperature, test it according to 5.
Subsequent operations shall be as follows: Among them, the 3 was especially specified, by being supposed the situation of the equipment sensor, actuator etc. Further, as for the intensity of interference magnetic field for tests by means of magnetic fields, the test method alone is specified due to the lack of adequate date to establish a standard. Typical values of transient voltages under the above mentioned conditions are as follows, based on test results accumulated by the companies concerned, constants of parts of the test circuit are specified based on them: Should so wide range of difference of temperatures be specified, it would be regarded as a kind of thermal shock test.
Regarding above operations as one cycle refer to Fig. Type A and Type D These are the tests which assume the transient voltages generated upon load damping classified in 1 above. Since there had been no any problem on the method under which any one selected among the voltage and temperature shall be iis constant, such opinion was not accepted mainly due to jiz reason that it is not favourable jks make the test requirement so complex.
Equipment subject to transient voltage test Although kinds of equipment subject to Type A through Type F transient voltage tests are basically left to the agreement of the parties concerned, some examples are given below for the reference taking account of the degree of effects of kinds of devices on the vehicle when some abnormalities have occurred Explanatory Table 1. Major portions revised and matters discussed as problem at committee meeting The revisions on this time were made based on the results of review of testing items covering the general requirements for environment and efforts to make the format and style of this standard in better order so as to make it in accordance with JIS Z as well as the modification made as the results of comparison with the similar international standards.
JIS Z – Free download ASME ICC CSA ASTM Codes
Such devicestherefore, may be excluded from this standard, but it is desirable that the test methods specified in this standard are applied to jks equipments.
Some examples are given below for reference of temperature setting for these equipment. The method for natural drop to be alternatively employed was specified so as to be simply applied, where a little bit more severe condition than what is expected at usual handling was specified. Moreover, in case of the equipment in 24V system, two different kinds of the testing circuits on which kis voltage shall be applied for a duration of time so long as equal to 60 times shall be constructed, subject to the voltage condition being same as it of 5.
Herein this paragraph, the matters in respect of general ijs and major points of revisions on this time are explained. Values specified on table 5 of the text are the actual values of related circuittherefore care must be takenfor condensers in particular, since the indicated and actual capacities of condensers are different.
Confirm the appearance, etc. Shock shall be applied to the specimen in accordance 7803 2.
JIS Z 8703:1983
Test 7803 of JIS D shall be carried out by means with the dust for test of the class 8 or the class 6 specified in 3. As for the details such as kinds of signal lines jia in the test circuit, etc. However, due lack of practical experiences and actual applications, it was decided not to be specified.
Of load dampings, A-2 and D-2 are the tests for transient voltages caused by the inverse electromotive force of the stator coil. If the electric current of exciting circuit of the alternator becomes not to be controlled by failure of the alternator, generated voltage becomes higher in proportion to the rotating speed of the alternator, and the battery will be overcharged.
Classification requirements 87003 classification of tests shall be in accordance with Table.
Since under such condition, the generation of transient voltage is limited to be kept so low that the test condition be made more relaxed, the resistance has been decided to be specified so to be directly connected with the power source and the test specimen.
In the remark 1 of Table 2 in 3. In case where no abnormality is found after applying the test kis be stopped. The test specimen shall be operated under the test voltage having been applied thereto, after the operation of test specimen uis stabilized, output of power source micro interruption equipment shall be micro interrupted and whether any abnormity exist or not of specimen shall be confirmed and recorded.
873 A power supply device, input device s and loading device s. Because it is not favourable for the voltage from the power supply device to be widely fluctuated due to operation of the equipment during test, the allowable range of such fluctuation has been revised so as to be a little bit severer.
JIS Z – Standard atmospheric conditions for testing (FOREIGN STANDARD)
Further, should any discharge not be available in airthe discharging probe shall be contacted with the such designated portion. Therefore, such details are left to the agreement between the persons concerned. The test apparatus shall consist of a capacitor C to store electrostatic energy and a discharging resistor Rd, that are integrated in a discharging probe, and shall keep the length of each grounding constants so that the reproducibility of the tests may be easily carried out.
Fro a reason that it is better to be optionally combined by user subject to the basic requirements for testing having been set outsuch opinion was not accepted. Confirm also the appearance, etc. Further, the constant temperature chamber shall be so constructed that the test specimen does not receive the heat radiation directly from the heat source. This is a test to evaluate the resistance against the over-voltage supplied in the case mentioned above, the objective equipment to which are same as those mentioned in the paragraph 5.
Then take the test specimen out of the chamber, keep it for 2 hours 2 or more under room temperature. B-1 is a test against the transient voltage discharged from the field coil to the loading side when the ignition switch is opened in the 12V system. Equipment subject to electrostatic test Although kinds of equipment subject to Type A through Type C electrostatic tests are basically left to the agreement between the perties concerned, some examples ate given in Explanatory Table 2 for reference taking account of the degree of effects on the vehicle when the equipment have occurred abnormalities.
When the ignition circuit is opened by the ignition switchtransient voltage tends to differ according to the arc discharge generated by the switch, some test results indicate, if a noise suppressor condenser is installed in parallel to the power supply circuit, it will constitute the major electrostatic capacity of the power supply circuit, and will affect on the generation of arc discharge.
Thereafter, successively record the characteristics of the equipment, according to above mentioned 1 or 2. Table 4 in the Text Value specified on Table 4 and Table 5 of the text are the actual values of related circuit parts. Particularly, strong electromagnetic fields that occur near radio transmission facilities represented by broadcasting stations, those which generated around the vehicle body by the operation on board radio of transmitter represented by transceiver, and troubles caused by interferences resulted from high frequency voltages, etc.
Therefore care must be taken, for condensers in particular, since the Indicated and actual capacities of condensers are qpttodiffer each other. For 12V system, two kinds of voltages, 6V class 1 and 5V class 2are selected as the minimum voltage V.