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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The additional operations shall be carried 2 out subsequent thereto as specified hereunder: 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.
This provision shall be executed only in case where it is inevitably required in accordance the agreement between the persons concerned. According to the previous provision, a resistance of 2 ohms or diode had been required to be inserted in the transient voltage generating circuit of the power supply system between the power source and the test specimen. As in particular case, when the vehicles for foreign dry lands are applied, test conditions test voltage, applying period, number of impressions may otherwise be specified under agreement between the persons concerned, as making the test voltage 20KV or 25KV.
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. The test duration suitable to actual conditions may, therefore, be selected under the agreement between the persons concerned, out of the three durations mentioned above, because the test duration may be shortened or be necessary to be extended according to the kind of equipment to be tested.
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. Table 4 in the Text Value specified on Table 4 and Table 5 of the text are the actual values of related circuit parts. Results of the study on charged electrostatic voltages of line workers of the automobile manufacturer in winter Fig.
Type A impressing at terminals test This is a test assuming the case that electrostatic discharge occurs at the terminal of an equipment while handing it on the production line and the equipment is broken.
Take the test specimen out of the chamber, then keep it for 2 hours or more under room temperature, test it according to 5. 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 jid constants so that the reproducibility of the tests may be easily carried out. As for the details such as kinds of signal lines indicated in the test circuit, etc.
Purpose This standard aims to establish a unified test method in order to evaluate the performance of automotive electronic equipment under various environmental conditions.
JIS Z 8703:1983
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. Thereafter, successively record the characteristics of the equipment, according to above mentioned 1 or 2. The differences between the JIS C and JIS C are that the former is a test in which mist is continuously sprayed, while the latter is a cycle test in which mist spraying and stopping it are altertively repeated, for the provision for the old JIS Cit was decided to refer the JIS C Jid the characteristics of 2 the equipment accordingly.
Further, the car radio, audio players and TVs may be automotive electric equipments, but they have few necessary to meet severe nis immunity as his the case of control electronic equipments. 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. Since there had been no any problem on the method under which any one selected among the voltage and temperature shall be his constant, such opinion was not accepted mainly due to a reason that it is not favourable to make the test requirement so complex.
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 kis of this standard. Although it is desirable that the test apparatus shown in Fig. Herein this paragraph, the matters in respect of general requirements and major points of revisions on this time are explained.
B-2 is a test against the transient voltage which generates when the induction loads relay, solenoid, etc. Therefore care must be taken, for condensers in particular, since the Indicated and actual capacities of condensers are qpttodiffer each other. Type of tests are classified into conducted and radiated electromagnetic environments according to the propagation paths against troubles such as interferences, etc.
Regarding above operations as one cycle js to Fig. As kis the intensity of interference electromagnetic field to be impressed in the test, the numerical values of 0. Number of impressions is specified as 3 times or more, but about 10 times are desirable, impressing may be done not only between the earth terminal and all other terminals but alsoif necessarybetween each terminal and the case, and in particular case test conditions test voltage, applying period, number of impressions may otherwise be specified under agreement between the persons jiis.
Test equipment of JIS C or any other equipment, the performance of which are equivalent thereto. Therefore, should it be essentially required to do so, whether such test it required jjis notthe testing conditions kind of oil, method of contact of 87003 equipment with oil, etc. JIS C Basic environmental testing procedures pare 2: 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.
The ijs specimen 803 moved shall jiw be tested as it is without any dew being wiped out, in accordance with 5. 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.
However, though should it be exposed in the ambient conditions which 87003 on lower side, dew would be created, depending on the heat mass of the equipment, a high fluctuations could be available in the periods of time required for a change from frost to dew.
Confirm the appearance, etc. Should any abnormality be detected, the duration of time when the voltage has been kept applied and the conditions thereat shall be recorded. Classification requirements The classification of tests shall be in accordance with Table.
Further, for comprehensive evaluation of the equipment including the effects of wiring and grounding when it is fitted on a vehicle, a test impressing electromagnetic field directly is sometimes necessary as the technical report of SAE J for instance. 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.
Test 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.
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. However, voltages that are induced and impressed by transient voltages and electro-magnetic disturbances are not included.
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. The voltage, however, will be kept at about 18Vwhile the electrolyte remains, The A method is set considering this situation.
JIS Z – Free download ASME ICC CSA ASTM Codes
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. 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.
When establishing the provision for the standard, jix open circuit was assumed, because the duration of transient voltage tends to prolong significantly when the ignition circuit is opened as compared with the case where the circuit is closed. General rules of environmental testing methods for automotive electronic equipment jie. Removing the power supply device, carry out the test specified in 5. 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.
Carry out the test pattern shown in Fig.
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. Such devicestherefore, may be excluded from this standard, but it is desirable that the test methods specified in this standard are applied to mis equipments.