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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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. A study had been carried out so as to obtain allowable range of the testing voltage.
Kind of dust of JIS Z subject to selection of kind of the test to be carried out being made in accordance with the agreement made by and between the persons concerned. 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 polaritythat generate when inductive loads connected to the vehicle electric circuit are cut off, are assumed.
As for the high output transmitter for the testit is considered convenient to use the transmitters with frequency bands for amatures 1. However, since JIS K is the standard to specify the testing the testing the physical properties of sulfurized rubber, only the provision for resting oil was referred in those standards and in respect of the method of testing, a unique method newly developed to judge whether the test shall be required or not and the testing conditions were specified, it is considered not necessary for the equipment to be installed inside car room to be immersed in oil.
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. Regardless of this provision, this test may not be carried out subject to the test required under 5.
Shock shall be applied to the specimen in accordance with 2. Type A and Type D These are the tests which assume the transient voltages generated upon load damping classified in 1 above. Which shall then be tested in accordance with 5. Some examples are given below for reference of temperature setting for these equipment.
Among them, the 3 was especially specified, by being supposed the situation of the equipment sensor, actuator etc. Kissuccessively record the characteristics of the equipmentaccording to above mentioned 1 or 2.
JIS Z 8703:1983
Carry out nis test pattern shown in Fig. When the ignition circuit is opened by the ignition switchtransient voltage tends to differ according to the arc discharge generated jiss 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.
Because it is not favourable for the voltage from the a 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. Of load dampings, A-1 and D-1 ate the tests for transient voltages caused by the delayed response in field coil.
Classification requirements The classification of tests shall be in accordance with Table.
The length of the grounding is desirable to keep constant within the range of 30—70cm. 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. When establishing the provision for the standard, only 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.
Typical values of transient voltages under the above mentioned conditions are as follows.
JIS Z – Free download ASME ICC CSA ASTM Codes
Impression duration for applying electromagnetic trouble factors and other test conditions conditions that may affect on troubles according electromagnetic waves, degree of modulation, modulation frequency, etc, and other environmental conditions are not particularly specified in this tests by selecting appropriate test durations and conditions which best fit to each object.
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.
Then take the test specimen out of the chamber ,place it immediately in the constant temperature chamber adjusted to the high temperature specified in Table 12 keep it in the chamber for the time specified in Table A power supply a, input device s and loading devices s.
This test should be jks applied against the liquid crystal displays, etc. 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. 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.
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.
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 conditions are specified through practical measurements of the transient voltage of each inductive load, and relatively jix transient voltages among these measurements are given as typical values.
Further, should any discharge not be available in airthe discharging probe shall be contacted with the such designated portion. In addition ,any conditions including but not limited to the visual appearance shall also be verified. Further, measuring accuracy and reproducibility of TEM cell test method using the reference sample, jus careful consideration is necessary on the following points: Herein this paragraph, the matters in respect of general requirements and major points of revisions on this time are explained.
Number of impressions is specified as 3 times or more, but about 10 times are desirable. Further, carry out the test pattern specified in Fig. In addition, grounding of whole test devices is necessary in order to the stabilization of reference potential and the safety during tests. JIS C Basic environmental testing procedures pare 2: 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.
Removing the power supply device, carry out the test specified in 5. In addition, the test apparatus for 14KHz to 30MHz frequency range electric fields may be the parallel strip line Explanatory Fig. Progressed with a great variety of electronic devices in recent years, such equipments have increased that give and receive kis with drivers through switches, keyboards or visual displays.
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 control electronic equipments. Thereforefor the each, the general method to be applicable to electronic equipment for automobile has been specified as a representative requirement. Most of the equipments 87003 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.