This standard specifies the verification method of the test equipment used for water testing of electric and electronic products according to GB 2423.38 "Basic environmental testing procedures for electric and electronic products Test R: Water test method". This standard applies to environmental water test equipment for electric and electronic products. GB/T 5170.20-1990 Basic parameter verification method for environmental test equipment for electric and electronic products Water test equipment GB/T5170.20-1990 Standard download decompression password: www.bzxz.net

UDC621.3.002.61620.7
National Standard of the People's Republic of China
GE 5170, 2 0 --90
Environmental testing for electric and electronic products
Inspcctlon methods for basic parameters of environaitesting equipments for electric and electronlc productsWater testing erquipmentswwW.bzxz.Net
Published on 1990-07-16
National Technical Supervision
19 91-03-01 implementation
National Standard of the People's Republic of China
Environmental testing for electric and electronic products
Inspcctlon methods for basic parameters of environaitesting equipments for electric and electronlc productsWater testing erquipments
Published on 1990-07-16
National Technical Supervision
19 91-03-01 implementation
National Standard of the People's Republic of China
Environmental testing for electric and electronic products
Inspcctlon methods for basic parameters of environaitesting equipments for electric and electronlc productsWater testing erquipments elcctlc and eletroaie productsWater Irting equipment
Subject content and scope of application
G 5170.20.-90
This standard specifies the electrical and electronic products law GU2423.38 Basic technical environment test method for electrical and electronic products, and the verification method for the certification equipment used in water testing. This standard applies to environmental water test equipment for electrical and electronic products. 2. Referenced standards: G6170.1 Environmental test and verification methods for electrical and electronic products. B223.38 Basic environmental test procedures for electrical and electronic products. Test R: Water test method. 3. Verification items: 3.1 Radius tolerance: 3.2 Rainfall diameter tolerance: 3.3 Water pressure difference: 4. Main verification instruments: 4.1 Rainfall degree test instrument: It can be used as a standard rain belt cup for meteorology, which is equipped with a rotatable plate. 4.2 Rainfall diameter measuring device
can be used with two full diameter ground devices or position devices, 4.3 Ice pressure tester
uses standard water pressure device or other similar water pressure sensor, 5 Verification method and qualification criterion
This test should be carried out under no-load conditions,
5.1Ra1 Artificial rain method: method for determining rainfall intensity difference, 5.1.1 Determination of raw materials
5.1.1.1 When verifying the intensity of artificial rainfall, the standard attachment shall be placed under the sulfur water nozzle for non-compliance. The distance between the water level of each cup is 200mm. Approved by the State Administration of Technology and Technology on July 16, 1990 and implemented on March 1, 1991. GB 5170.2093. 5.1.2 Before the water spraying starts, the measuring cup is ready. After 5 minutes, the lid of each cup is opened and the test is carried out. Each time, 5 minutes, each hole is dripped with a sample, and a total of 3 times. If it is a standard rain-based cup, record it directly and sign the A1 drop test record table in Appendix A. 5.1.3 Data processing When using a water cup to measure the rain-repellent rat, the drop rate of any cup is calculated by the following formula, and the result is recorded in Table I.
Wherein, R: frequency of drop.mm/h;
Specification: m:
A: cm;
Selection: mn.
5. 1. 1. 4 Qualification criteria
The results shall comply with the provisions of G1 2428.38, clause 4. 2. 3. 5.1.2 Raindrop self-weight test method
5.1.2.1 When testing the droplet diameter, the raindrop true diameter measuring disc can be used for testing. The number of tests is 3 times. The record format is in accordance with the Appendix A2 Raindrop diameter tolerance test record. 5. 1. 2. 2 Data collation
The measured raindrop diameter reading value shall be adjusted according to the correction value in the test table and the correction value shall be adjusted to obtain the median volume diameter so as to compare it with the specified value in the standard.
5.1.2.3 Qualification
The test result shall comply with the provisions of Table 4.2.3 of GB2423.88. 5.2a2 Test method for rain intensity of filter tank 5.2.1 Test step
5.2.1.1 When testing the rain intensity of the filter tank, place a rain cloth at 20G~2000mm below the nozzle of the test tank and fill it with water. As shown in the diagram, 4 points are the geometric centers 5.2.1.2 Fill the test water tank with enough test water: and measure the rainfall intensity according to the provisions of GB242.38+4.8.3. Before the water nozzle starts to fill with rain, the rain ring should be well opened. After the rain has been stable for 5 minutes, all the cups should be opened at the same time and measured. Measure once every 10 minutes. Record the measurement in the form of Table A1 Rainfall Intensity Test Record Table in Appendix A. 5.2.1.3 Data Arrangement According to the provisions of 4.1.1.3.
5. 2. 1. 4 Qualification criteria
B 5170.20--90
Qualification results shall comply with the provisions of Table 2 of Article 4.3.3 of GB 2423.38. 5.3 RbI commercial strength filtration strength tolerance control method 5.3.1 Verification steps
According to Article 4.1.1
5-5.2 Qualification criteria
Verification results shall comply with the provisions of Table 3 of Article 5.2.3 of GB 2429.38. 5.4Rh2.1 Verification method for water flow and water pressure of swing pipe method 5.4.1 Verification method for swing pipe method: Check the water volume and water pressure at the inlet of the proposed swing pipe. The inspection result shall comply with the provisions of Table 4 of Article 5.3.2.2 of GB 2423.33.
5.5Rb2.2 Hand-held sprinkler pressure test method 5.5.F Hand-held sprinkler pressure test method, only check the sprinkler flow rate and water pressure, the test results should comply with GD2423.38 5.3.3.2.
5.6 Small error test method
5.6.7 Test steps
Within the adjustable range of the pressure tank, select the maximum standard pressure value of the water tank as the test value. Before the test, close all the tight parts of the pressure gauge and start the pressure test. After the pressure rises by 30mm, measure every 2m, for a total of 15 times. The record format is as shown in Table A3 of Appendix A. 5.6.2 The test point is the water pressure indication point of the pressure tank. 5.6. 3 Data processing
Correct the water reading after the test according to the correction table. The difference between the corrected value and the calibration value is the positive and negative difference of the calibration water pressure value.
5.6.4 Qualification judgment
The calibration result is as specified in 6.3.2 of 62423.38. The model and name of the equipment.
Model and name of the calibration instrument:
Calibration environment and temperature:
Rainfall intensity value:
Rainfall intensity
Number of times
Measurement point
Test date
Personal name of the calibration personnel
Model and name of the equipment to be tested||tt ||Testing instrument model name
Testing environment conditions, temperature.
Testing filter diameter
Testing time
Testing date
Tester’s signature
Tested equipment model, name
Testing instrument model, name:
Testing environment temperature
Testing room
Water pressure reading
Testing deadline
Tester’s signature
GB 5170.20- 90
Test record table example
Old A1 rainfall intensity wear test record
Abstract degree:
C, relative distance
Award pressure:
According to the responsible person, etc.
Full diameter tolerance test record table
, relative grip,
Water pressure tolerance test record table
Sperm spot,
Pregnancy, relative distance:
Calibrating person signed
% pressure:
Calibrating person signed
Additional instructions:
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