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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General rules of environmental testing methods for automotive electronic equipment 1. JIS Jie Basic environmental testing procedures pare 2: Definitions Definitions of major terms used in this standard are as follows: However, voltages that are induced and impressed by transient voltages and electro-magnetic disturbances are not included.
Classification requirements The classification of tests shall be in accordance with Table. The test specimen shall be operated under the test voltage having been applied thereto, after the operation of test specimen is 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. Should any abnormality be detected, the duration of jjis when the voltage has been kept applied and the conditions thereat shall be recorded.
In case where no abnormality is found after applying the test may be stopped. Removing the power supply device, carry out the test specified jiis 5. Test in type B and C, test arrangement shall be so that specimen is connected to power supply device, s device and loading devices shown ad in Dig.
Further, should any discharge not be available in airthe discharging probe shall be contacted with the such ji portion. A power supply device, input device s and loading device s. Test apparatus a power supply device, input device sloading device s and a constant temperature chamber capable to maintain the temperature within the allowable range shown in Table 8 regarding each setting temperature specified in Table 7 shall be used.
Further, the constant temperature chamber shall be so constructed that the jix specimen does not receive the heat radiation directly from the heat source. Then make jus temperature gradually approached to other temperature and record in likemanner. The test order of setting temperature is not particularly specified.
Take the specimen out of the chamber, 2 remove water drops from its surface, if any, then keep it for 2 hours or more under room temperature, test it according to 5.
Then take the test specimen out of the chamber, keep it for 2 hours 2 or more under room 803. Keep x for 2 hour or more under room temperature, test it according to 5. Further, the constant temperature chamber shall be so constructed that the chamber does not receive the heat radiation directly from the heat source of the test specimen. Take the test specimen out of the chamber, then keep it for 2 hours or more under room temperature, test it according to 5.
Further, carry out the test pattern specified in Fig.
JIS Z – Free download ASME ICC CSA ASTM Codes
Take the test specimen out of the chamber and keep it for 2 hours or more under room temperature, test it according to 5. Then take the test specimen out of the chamber ,place it immediately in the jjis temperature chamber adjusted to the high temperature specified in Table 12 keep it in the chamber for the time specified in Table Regarding above operations as one cycle refer to Fig.
A nis supply device, input device s and loading devices s. Keep the test specimen under the conditions for 2. Carry out the test pattern shown in Fig.
Subsequent operations shall be as follows: Appearance and other conditions of jia test equipment at that time shall. Record the characteristics of 2 the equipment accordingly. Confirm the appearance, etc. Thereafter, successively record the characteristics of the equipment, according to above mentioned 1 or 2. Confirm also the appearance, etc. Appearance and other conditions of the equipment at that time shall also be confirmed.
Thereaftersuccessively record the characteristics of the equipmentaccording to above mentioned 1 or 2. Confirm also the appearanceetc. The test specimen this moved shall then be tested as it is without any dew being wiped out, in accordance with 5. In addition ,any conditions including but not limited to the visual appearance shall also be verified. In the remark 1 of Table 2 803 3. Record the characteristics of the equipment accordingly. Test equipment 88703 JIS C or any other equipment, the performance of ijs are equivalent thereto.
The additional operations shall be carried 2 out subsequent thereto as specified hereunder: However, the test may be carried out by means of the method as specified hereunder: Shock shall be applied to the specimen in accordance with 2.
Jiw method 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. Kind of dust js JIS Z subject to selection of kind of the test jsi be carried out being made in accordance with the agreement made by and between the persons concerned. After the test above, the test in 5. Which shall then be tested in accordance with 5. Explanatory note on JASOD General rules of environmental testing methods for automotive electronic equipment This explanatory note has been issued for a purpose to explain the matters specified in the text of this standard and any matter relating thereto, which shall not be any part of this standard.
Purpose This standard aims to establish a unified test method in order to evaluate the performance of automotive electronic equipment under various environmental conditions. Major portions revised and matters discussed as problem at committee meeting The revisions on this time were made jjis 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 jiz as the modification made as the results of comparison with the similar international standards.
Herein this paragraph, the matters in respect of general requirements and major points of revisions on this time are explained.
JIS Z 8703:1983
Any supplemental explanations of jos individual items are made on the paragraph 3 hereof. Thereforefor the each, the jsi method to be applicable to electronic equipment for automobile has been specified as a representative requirement.
Since there had been no any problem on the method under which any one selected among the voltage and temperature shall be kept constant, such opinion was not accepted mainly due to a reason that it is not favourable to make the test requirement so complex. 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. Supposed that those tests are required to evaluate any reliability, only the temperature and humidity test should be required.
However, supposed that those tests are required to examine the changed behavior of the equipment due to change jiw the environmental conditions only 8073 temperature and humidity cycle test, it is not possible to identify 87003 to which the behavior available has ijs changed, either temperature change or humidity 8073. Points revised of individual provision and supplemental explanation thereof 3.
This standard is desirable to be s to motorcycles, if possible, although the js conditions of motorcycles are not always the same as four wheelers. Further, the car radio, audio players and TVs may be automotive electric equipments, but they have few necessary to meet severe environmental immunity as in the case of 87033 electronic equipments. Such devicestherefore, may be excluded from this standard, but it is desirable that the test methods specified in this standard are applied to those equipments.
However, due his of practical experiences and actual applications, it was decided not to be specified. Because it is 870 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. A study had been carried out so as to obtain allowable range of the testing voltage.
However, since there was not any testing specified in this standard, the minor deviation of testing voltage at which is important, it was decided to provide a provision to specify that the testing voltage shall be applied, which shall be monitored so as to be correct by means with any voltmeter of accuracy in the class of 0.
For 12V system, two kinds of voltages, 6V class 1 and 5V class 2are selected as the minimum voltage V. Most of the equipments will not cause any trouble with the class 1 test voltage for the normal and cold area specifications, but the class 2 voltage shall be used under the agreement between the persons concerned when the effect of engine frictions, etc. Although it is desirable that the test apparatus shown in Fig.
Although these test apparatuses are desirable to be used in low temperature atmosphere, they may be used under room temperature if it is considered acceptable according to the agreement between the persons concerned.
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. The voltage, however, will be kept at about 18Vwhile iis electrolyte remains, The A method is set considering this situation.
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. Moreover, in case of the equipment in 24V system, two different kinds of the testing circuits on which the 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.
Regardless of this provision, this jiis may not be carried out subject to the test required under 5.
Main transient voltages on vehicles may be classified as follows: Type E 4 Transient voltages generated when various inductive loads relay, solenoid, etc. Of above mentioned transient voltages. Test methods are specified in this standard for 1 through 5. Type A and Type D These are the tests which assume the transient voltages generated upon load damping classified in 1 above. Of load dampings, A-1 and D-1 ate the tests for transient voltages caused by the delayed response in field coil.
Typical values of transient voltages under the above mentioned conditions are as follows. 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: Of load dampings, A-2 and D-2 are the tests for transient voltages caused by the inverse electromotive force of the stator coil.
As was the case of A-1 and D-1, the test conditions the test circuit and the constants of its parts are specified based on the test results under the same operating conditions for alternator with A-1 and D Table 4 in the Text Value specified on Table 4 and Table 5 of the text are the actual values of related circuit parts. Therefore care must be taken, for condensers in particular, since the Indicated and actual a of condensers are qpttodiffer each other.
Type B and Type E Of major transient voltages classified in the foregoing, these tests are based on the assumption of 23 and 4 above; that is to say, these transient voltages of mutative polarity88703 generate when inductive loads connected to 870 vehicle electric circuit are cut off, are assumed.
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. When establishing the provision for the standard, only open circuit was assumed, because the duration of transient voltage tends to prolong significantly when 873 ignition circuit is opened as compared with the case where the circuit is closed.
Typical values of the former are as follows, and constants of parts of the test circuit are specified based on them. Values specified on table 5 of the text are the actual values of related circuit jls, therefore care must be takenfor condensers in particular, since the indicated and actual capacities of condensers are different. 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.
It is also expected that the voltage may rise near to the primary inductive voltage at the time when the breaker is connected, according to the condition of arc discharge suppression.
Foregoing results are, however, obtained on bench assembled tests, and it was confirmed that only the lower transient voltage would occur on vehicle tests as compared with bench tests. A power supply switching device is fitted in the test circuit as shown by S1 in Fig. B-2 is a test against the transient voltage which generates when the induction loads relay, solenoid, etc. The test conditions are specified through practical measurements of the transient voltage of each inductive load, and relatively large transient voltages among these measurements are given as typical values.