GB 15322.1-2003 Combustible gas detectors Part 1: Point type combustible gas detectors with a measurement range of 0^-100%LEL
Some standard content:
The technical requirements, test methods, markings, inspection rules and instruction manuals of this part are mandatory. GB15322 "Combustible Gas Detector" is divided into seven parts: Part 1: Point-type combustible gas detectors with a measuring range of 0 to 100% LEL Part 2: Independent combustible gas detectors with a measuring range of 0 to 100% LEL Part 3: Portable combustible gas detectors with a measuring range of 0 to 100% LFL Part 4: Point-type combustible gas detectors for measuring artificial gas... - Part 5: Independent combustible gas detectors for measuring artificial gas Part 6: Portable combustible gas detectors for measuring artificial gas Portable flammable gas detectors - Part 7: Linear flammable gas detectors GB15322.1-2003
This part is the first part of GB15322. During the revision process, the drafting team formulated the technical requirements of this part based on the implementation of the national standard GB15322-1994 "Technical requirements and test methods for flammable gas detectors" for many years and the current situation in my country, and referred to the European standards EN50054, EN50055, EN50056, EN50057, EN50058 (1999 edition), and carried out corresponding tests and verifications.
Appendix A of this part is a normative appendix.
This part was proposed by the Ministry of Public Security of the People's Republic of China. This part is under the jurisdiction of the Sixth Technical Committee of the National Fire Protection Standardization Technical Committee. The responsible drafting unit of this part is the Shenyang Fire Science Research Institute of the Ministry of Public Security. The drafting organizations of this part are: Beijing Keliheng Safety Equipment Co., Ltd., Beijing Dianbo Technology Development Co., Ltd., Fuyang Huaxin Electronic Instrument Co., Ltd., Shenzhen Te'an Electronic Co., Ltd. The main drafters of this part are: Ding Hongjun, Fei Chunxiang, Wang Yuxiang, Li Kexiang, Zhao Yingran, Qu Li, Guo Chunlei, Zhu Gang, Jiang Bo. The previous versions of the standard replaced by this part are: -GB 15322-1994.
1 Scope
Combustible gas detector
Part 1: Point-type combustible gas detector with a measurement range of 0 to 100%LEL
GB15322.1-2003
This part of GB15322 specifies the definition, classification, technical requirements, test methods, marking, inspection rules and instructions for use of point-type combustible gas detectors.
This part applies to point-type combustible gas detectors (hereinafter referred to as detectors) with a measurement range of 0 to 100%LEL installed and used in general industrial and civil buildings. Detectors with special performance installed in other environments shall also comply with this part, except for special requirements that shall be separately specified by relevant standards.
2 Normative references
The clauses in the following documents become the clauses of this part through reference to this part of GB15322. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, the parties who reach an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For all undated references, the latest versions apply to this part.
GB16838-1997 Environmental test methods and definitions of severity level 3 for fire protection electronic products
This part adopts the following definitions.
Alarm setting value alarm setting value The preset combustible gas alarm concentration value.
Alarm action value
The minimum combustible gas concentration value corresponding to the detector alarm. 3.3
Lower explosive limit (LEL)
low explosive limit
The minimum explosive concentration of combustible gas or vapor in the air. 4 Classification
4.1 According to the explosion-proof requirements, it can be divided into:
a) explosion-proof type;
b) non-explosion-proof type.
4.2 According to the use environment conditions, it can be divided into:
a) indoor use type;
b) outdoor use type.
GB 15322.12003
5 Technical requirements
5.1 Performance
5.1.1 When the combustible gas concentration in the monitored area reaches the alarm setting value, the detector should be able to send out an alarm signal. 5.1.2 Alarm setting value
When the detector has two alarm setting values, the lower limit alarm setting value shall be in the range of 1%LEL to 25%LEL, and the upper limit alarm setting value shall be 50%LEL; for detectors with only one alarm setting value, the alarm setting value shall be in the range of 1%LEL to 25%LEL.
5.1.3 Alarm action value
5.1.3.1 In all test items specified in this section, the alarm action value of the detector shall not be lower than 1%LEL. 5.1.3.2 The difference between the alarm action value and the alarm setting value of the detector shall not exceed ±3%LEL. 5.1.4 Full scale indication deviation
For detectors with the function of displaying the concentration of combustible gas, the difference between the displayed value and the actual value shall not exceed ±5%LEL. 5.1.5 Response time
For detectors with combustible gas concentration display function, the response time (tgo) when the display value reaches 90% of the true value should not exceed 30s. For detectors without combustible gas concentration display function, the alarm response time should not exceed 30s. 5.1.6 Storage without power
The detector is first placed in an environment with a temperature of -25℃±2℃ for 24 hours, then restored under normal environmental conditions for at least 24 hours, and then placed in an environment with a temperature of 55℃±2℃ for 24 hours, and then restored under normal environmental conditions for at least 24 hours. After the test, the detector should not have damage to the coating and corrosion, and the function should be normal. The difference between its alarm action value and the alarm setting value should not exceed ±3%LEL. 5.1.7 Azimuth (except for suction detectors) The alarm action value of the detector is measured every 45° rotation on the three mutually perpendicular axes of X, Y, and Z. The difference between the alarm action value of the detector and the alarm setting value should not exceed ±5%LEL. 5.1.8 High concentration flooding performance (only applicable to explosion-proof detectors) During flooding, the detector shall send out an alarm signal or a fault signal or an obvious indication signal that the gas concentration exceeds the measurement range. After flooding, the detector shall meet the requirements of a) or b):
a) The detector cannot be in the normal monitoring state. b) If the detector can be in the normal monitoring state (can be operated manually), the difference between the alarm action value of the detector and the alarm setting value shall not exceed ±5%LEL.
5.1.9 Alarm repeatability
Under normal environmental conditions, the alarm action value of the same detector is measured 6 times, and the difference between the alarm action value of the detector and the alarm setting value shall not exceed ±3%LFI.
5.1.10 High-speed airflow
Under the condition of an airflow velocity of 6m/s, the difference between the alarm action value of the detector and the alarm setting value shall not exceed ±5%LEI. 5.1.11 Voltage fluctuation
The power supply voltage of the detector is ±15% of the rated power supply voltage, and the difference between its alarm action value and the alarm setting value should not exceed ±3%LEL.
5.1.12 Long-term stability performance
The detector should be able to operate continuously for 28 days under normal environmental conditions. During the test, the detector should not issue an alarm signal or a fault signal. After the test, the difference between the alarm action value and the alarm setting value of the detector should not exceed ±5%I.EI. 5.1.13 Insulation withstand voltage performance
GB 15322.12003
The insulation resistance between the external live terminals and the power plug of the detector with insulation requirements and the shell should be no less than 100Mα under normal environmental conditions, and no less than 1MQ under hot and humid environments. The above-mentioned parts shall also be subjected to a withstand voltage test of 1 minute at an AC voltage with a rated voltage tolerance frequency of 50Hz and an effective voltage of 1500V (when the rated voltage exceeds 50V) or an effective voltage of 500V (when the rated voltage does not exceed 50V). During the test, the detector shall not discharge or break down, and the detector shall function normally after the test. 5.1.14 The detector should be able to withstand the various tests under the electrical interference conditions specified in Table 1, and should meet the following requirements during and after the test: During the test, the detector should not send out an alarm signal or an irreversible fault signal; a) After the test, the difference between the alarm action value and the alarm setting value of the detector should not exceed ±5%ILEL. b)）
Test name
Radiated electromagnetic field test
Electrostatic discharge test
Electrical transient pulse test
Test parameters
Field strength/(V/m)
Frequency range/MHz
Discharge voltage/V
Number of discharges
Transient pulse voltage/kV
Test conditions
1～1000
2(AC power line)
1(other connecting lines)
Positive, negative
1 min each time
Working state
Normal monitoring state
Normal monitoring state
Normal monitoring state
The detector should be able to withstand the various tests under the climatic and environmental conditions specified in Table 2, and should meet the following 5.1 during and after the test. 15
Requirements:
During the test, the detector should not send out an alarm signal or a fault signal; b) After the test, the detector should have no damage to the coating and corrosion, and the difference between its alarm action value and the alarm setting value should not exceed ±10%LEL.
Test name
High temperature test
Low temperature test
Steady-state damp heat test
Test parameters
Temperature/℃
Duration/h
Temperature/℃
Duration/h
Temperature/℃
Relative humidity/%
Duration/h
Test conditions
Indoor use type
Outdoor use type
Working state
Normal monitoring state
Normal monitoring state
Normal monitoring state
The detector should be able to withstand the tests specified in Table 3. During and after the test, the detector should meet the following requirements: 5. 1. 16
During the test, the detector shall not send out an alarm signal or a fault signal; after the test, the detector shall not have any mechanical damage or loose fastening parts, and the difference between the alarm action value and the alarm setting value of the detector shall not exceed ±5%LEL.
GB 15322.1—2003
Test name
Vibration test
Drop test
5.1.17 Gas interference test
Test parameters
Frequency range/Hz
Acceleration g
Sweep rate/(oct/min)
Number of axes
Number of sweeps per axis
Drop height/rmm
Number of drop cuts
Test Conditions
10～150
250 (mass less than 1kg)
100 (mass between 1kg～10kg)
50 (mass greater than 10kg)
Working state
Normal monitoring state
No power state
When the detector is used for home alarm, it should work in an environment with a volume fraction of 0.1% ethanol for 10 minutes, and then be placed in normal environmental conditions for 10 minutes.
a) During the test, the detector should not send out an alarm signal or a fault signal; b) After the test, the difference between the alarm action value and the alarm setting value of the detector should not exceed ±5%LEL. 5.2 Performance of main components
5.2.1 Electronic components should be treated with three protections (moisture-proof, mildew-proof, and salt spray-proof). 5.2.2 The shell of the detector should be made of non-combustible or flame-retardant materials (oxygen index ≥32). 6 Test methods
6.1 Test outline
The test procedure is shown in Table 4.
Test items
Appearance inspection test
Main component inspection test
De-energized storage test
Alarm action value test
Direction test
Alarm repeatability test
High-speed airflow test
Voltage fluctuation test
Detector number
Test items
Full-scale indication deviation test
Response time test
High-concentration flooding test
Insulation resistance test| |tt||Withstand voltage test
Radiated electromagnetic field test
Electrostatic discharge test
Electrical transient pulse test
High temperature test
Low temperature test
Steady-state damp heat test
Vibration test
Drop test
Long-term stability test
Gas interference test
Table 4 (continued)
Detector number
The test samples are 12 and are numbered before the test. The controller matching with them is also provided. If there is no description in the relevant provisions, all tests are carried out under the following atmospheric conditions: Temperature: 15℃～35℃; Humidity: a constant value between 30%RH～70%RH±10%RH; Atmospheric pressure: 86kPa～106kPa.
6.1.4 If there is no description in the relevant provisions, the tolerance of each test data is ±5%. 6.1.5 The detector shall be inspected visually before testing, and the test can be carried out only when it meets the following requirements. a) The text, symbols and signs are clear and complete; b) There is no corrosion, coating shedding and blistering on the surface, and no obvious scratches, cracks, burrs and other mechanical damage; c) The fastening parts are not loose.
6.1.6 Test gas distribution accuracy
GB 15322. 1--2003
The purity of the combustible gas used to prepare the test gas shall not be less than 99.5%, and the air used to prepare the test gas shall be fresh air without dust and oil. The humidity of the gas distribution shall meet the normal humidity conditions, and the gas distribution error shall not be greater than ±2% of the alarm setting value. 6.1.7 Detector calibration
Before the test, the alarm point of the detector shall be calibrated according to the alarm setting value according to the product manual, and re-checked and confirmed. No calibration shall be performed thereafter. It is allowed to use the calibration cover to calibrate the detector. 6.1.8 Detector zeroing
Before the test, first preheat the detector for 1h (or according to the time specified in the product manual), and then zero it according to the instructions. No zeroing is required after the test begins (except when there are special requirements for individual tests). 6.2 Main component inspection test
GB 15322.1—2003
6.2.1 Purpose
Inspect the performance of the main components of the detector.
6.2.2 Requirements
The performance of the main components of the detector shall meet the requirements of Article 5.2. 6.2.3 Method
6.2.3.1 Inspect and record the three-proof conditions.
6.2.3.2 Inspect the outer shell of the detector and measure the oxygen index of the outer shell of the flame-retardant material. 6.3 No-power storage test
6.3.1 Purpose
Inspect the adaptability of the detector to the storage environment. 6.3.2 Requirements
The detector shall meet the requirements of 5.1.6.
6.3.3 Methods
6.3.3.1 Place all detectors that have been calibrated and zeroed and are functioning normally in a low-temperature test chamber, and lower the temperature in the test chamber to -25℃±2℃ at a cooling rate of no more than 1℃/min, and keep it for 24 hours. 6.3.3.2 Take the detector out of the low-temperature test chamber and place it in a normal indoor environment to recover for at least 24 hours. 6.3.3.3 Place the detector in a high-temperature test chamber, and raise the temperature in the test chamber to 55℃±2℃ at a heating rate of no more than 1℃/min, and keep it for 24 hours.
6.3.3.4 Take the detector out of the high-temperature test chamber and place it in a normal indoor environment to recover for at least 24 hours. 6.3.3.5 After the test, measure the alarm action value of the detector under normal environmental conditions according to the method in 6.4.3. 6.3.4 Test equipment
Meet the requirements of Chapter 4 of the national standard GB16838-1997. 6.4 Alarm action value test
6.4.1 Purpose
Check the accuracy of the alarm setting value of the detector. 6.4.2 Requirements
The alarm action value of the detector shall meet the requirements of Article 5.1.3. 6.4.3 Method
6.4.3.1 Install the detector in the test box according to the normal working state requirements, turn on the power, and keep the detector in the normal monitoring state for 20 minutes.
2 Start the ventilator to stabilize the air flow speed in the test box at 0.8m/s±0.2m/s, and then at a speed not exceeding 1%LEL/min.4.3.2
Increase the test gas concentration at a high rate until the detector sends out an alarm signal and measure the alarm action value of the detector. 6.4.4 Test equipment
The test equipment shall comply with the provisions of Appendix A of this Part. 6.5 Orientation test
6.5.1 Purpose
To test the effect of the detector orientation on the alarm action value. 6.5.2 Requirements
The orientation performance of the detector shall meet the requirements of Article 5.1.7. 6.5.3 Methods
6.5.3.1 Install the detector in the test box according to the normal working state requirements, turn on the power, and keep the detector in the normal monitoring state for 20 min.
Start the fan to stabilize the air flow velocity in the test box at 0.8m/s±0.2m/s, then increase the test gas concentration at a rate of no more than 1%I.EI/min until the detector sends out an alarm signal, and measure the alarm action value of the detector at 0° on the Z axis. After that, perform a test every 45° rotation and measure the alarm action value of each position on the Z axis. 6.5.3.3 Measure the alarm action value of each position on the Y and X axes respectively. If the external structure and internal component structure of the detector on the Y and X axes have no effect on the air flow velocity, the Y and X axis tests may not be performed. 6.5.4 Test equipment
The test equipment shall comply with the provisions of Appendix A of this Part. 6.6 Alarm repeatability test
6.6.1 Purpose
To test the repeatability of the detector alarm action value. 6.6.2 Requirements
The detector alarm repeatability shall meet the requirements of 5.1.9. 6.6.3 Method
Repeat the test 6 times according to the method in 6.4.3 and measure the detector alarm action value each time. 6.6.4 Test equipment
The test equipment shall comply with the provisions of Appendix A of this Part. 6.7 High-speed airflow test
6.7.1 Purpose
To test the adaptability of the detector to high-speed airflow. 6.7.2 Requirements
The high-speed airflow performance of the detector shall meet the requirements of 5.1.10. 6.7.3 Method
6.7.3.1 Install the detector in the test box according to the normal working state requirements, turn on the power supply, and keep the detector in the normal monitoring state for 20 minutes.
6.7.3.2 Start the ventilator to stabilize the air flow speed in the test box at 6m/s±0.5m/s, increase the test gas concentration at a rate not greater than 1%LEL/min until the detector sends an alarm signal, and measure the alarm action value of the detector. 6.7.4 Test equipment
The test equipment shall comply with the provisions of Appendix A of this part. 6.8 Voltage fluctuation test
6.8.1 Purpose
To test the adaptability of the detector to grid voltage fluctuations. 6.8.2 Requirements
The performance of the detector shall meet the requirements of 5.1.11. 6.8.3 Method
Adjust the power supply voltage of the detector to 85% of the rated working voltage and stabilize it for 20 minutes, and measure the alarm action value of the detector according to the method in 6.4.3. Then, the combustible gas in the test chamber is discharged to restore the detector to the normal monitoring state. The power supply voltage of the detector is adjusted to 115% of the rated working voltage and stabilized for 20 minutes. Then, the alarm action value of the detector is measured according to the method in 6.4.3. 6.8.4 Test equipment
The test equipment shall comply with the provisions of Appendix A of this part. 6.9 Full-scale indication deviation test
6.9.1 Self-
Test the full-scale indication deviation of the detector.
6.9.2 Requirements
, the full-scale indication deviation of the detector shall meet the requirements of 5.1.4. GB15322.1—2003
6.9.3 Method
6.9.3.1 Connect the detector to the power supply and keep it in the normal monitoring state for 20 minutes. 6.9.3.2 Adjust the flow of combustible gas and clean air entering the gas diluter respectively, and prepare test gas with a flow of 500mL/min and a concentration of 10%, 25%, 50%, 75%, and 90% of the detector full scale. Then, deliver the prepared test gas to the sensor element of the detector through the calibration hood for at least 1 minute, and record the indication of the detector in each case. 6.9.4 Test equipment
a) Gas analyzer;
b) Gas diluter.
6.10 Response time test
6.10.1 Purpose
To test the response time of the detector. bzxz.net
6.10.2 Requirements
The response time of the detector shall meet the requirements of Article 5.1.5. 6.10.3 Method
6.10.3.1 Connect the detector to the power supply and keep it in the normal monitoring state for 20 minutes. 6.10.3.2 For detectors with the function of displaying the concentration of combustible gas, adjust the flow rate of the combustible gas and clean air entering the gas diluter, prepare a test gas with a flow rate of 500mL/min and a concentration of 60% of the full scale of the detector, and deliver the prepared test gas to the sensor element of the detector through the calibration cover, and start the timing device at the same time. When the detector displays 90% of the actual value, stop the timing and record the response time of the detector (tgo). 6.10.3.3 For detectors without the function of displaying the concentration of combustible gas, adjust the flow rate of the combustible gas and clean air entering the gas diluter, prepare a test gas with a flow rate of 500mL/min and a concentration of 1.6 times the alarm action value of the detector, and deliver the prepared test gas to the sensor element of the detector through the calibration cover, and start the timing device at the same time. When the detector sends out an alarm signal, stop the timing and record the alarm response time of the detector.
6.10.4 Test equipment
a) Gas analyzer;
b) Gas diluter;
c) Timer.
6.11 High concentration flooding test
6.11.1 Self
Test the adaptability of the detector to high concentration flooding. 6.11.2 Requirements
The high concentration flooding performance of the detector shall meet the requirements of Article 5.1.8. 6.11.3 Methods
6.11.3.1 Install the detector in the explosion-proof test chamber and keep it in the normal monitoring state for 20 minutes. 6.11.3.2 Deliver the combustible gas with a volume fraction of 100% to the sensor element of the detector through the calibration hood at a flow rate of 500mL/min, keep it for 2 minutes, extract the combustible gas in the test chamber, and then place the detector in clean air for 30 minutes. During the test, observe and record the working status of the detector; after the test, if the detector can be in the normal monitoring state, measure the alarm action value of the detector according to the method in 6.4.3.
6.11.4 Test equipment
Explosion-proof test chamber.
6.12 Insulation resistance test
6.12.1 Purpose
To test the insulation performance of the detector.
6.12.2 Requirements
The insulation performance of the detector shall meet the requirements of 5.1.13. 6.12.3 Method
GB 15322. 1-2003
6.12.3.1 Under normal environmental conditions, use the insulation resistance test device to apply a 500V±50V DC voltage to the following parts of the detector for 60s±5s, and measure its insulation resistance. a) Between the external live terminals with insulation requirements and the housing; b) Between the power plug and the housing (the power switch is in the on position, and the power is not connected). 6.12.3.2 Place the detector in a drying oven at a temperature of 40℃±5℃ and dry for 6 hours. Then place it in a damp heat test chamber at a temperature of 40℃±2℃ and a relative humidity of 90%~95% for 96 hours, and then place it under normal environmental conditions for 60 minutes, and measure its insulation resistance according to the above method.
6.12.4 Test equipment
Insulation resistance test device that meets the following technical requirements (megohmmeter or shaker can also be used for testing) Test voltage: 500V±50V;
Measurement range: 0Ma~500MQ;
Minimum division: 0.1MQ;
Time: 60 s±5 s.
6.13 Pressure Withstand Test
6. 13.1 Purpose
Test the pressure withstand performance of the detector.
6.13.2 Requirements
The pressure withstand performance of the detector shall meet the requirements of 5.1.13. 6.13.3 Methods
6.13.3.1 Use a withstand voltage test device to apply an AC voltage of 50Hz, 1500V±10% (rated voltage exceeds 50V), or 50Hz±1%, 500V±10% (rated voltage does not exceed 50V) to the following parts of the detector at a voltage rise rate of 100V/s~500V/s for 60s±5s, and observe and record the phenomena that occur during the test. a) Between the external live terminals with insulation requirements and the shell; b) Between the power plug and the shell (the power switch is in the on position and the power is not connected). 6.13.3.2 After the test, perform a functional check on the detector in accordance with the provisions of Article 5.1.1. 6.13.4 Test equipment
A withstand voltage test device that meets the following technical requirements: Test power supply: voltage 0V~1500V (effective value) continuously adjustable, frequency 50Hz±1%, voltage rise (fall) rate 100V/s~500 V/s.
Timer: 60 s±5s.
6.14 Radiated electromagnetic field test
6.14.1 Test the adaptability of the detector to work in the radiated electromagnetic field environment. 6.14.2 Requirements
The anti-radiated electromagnetic field performance of the detector shall meet the requirements of Article 5.1.14. 6.14.3 Methods
6.14.3.1 Place the detector on the insulating table, turn on the power, and keep the detector in the normal monitoring state for 20 minutes. 9
GB15322.1—2003
6.14.3.2 Arrange the test equipment according to Figure 1, place the transmitting antenna in the middle, and place the detector and the electromagnetic interference measuring instrument 1m on each side of the transmitting antenna.
Tested detector
Transmitting antenna
Electromagnetic interference measuring instrument
Power signal generator
Figure 1 Layout of test equipment
6.14.3.3 Adjust the output of the power signal generator of 1MHz~~1000MHz so that the reading of the electromagnetic interference measuring instrument is 10V/m. During the test, the frequency should change slowly at a rate not greater than 0.005 oct/s within the frequency range of 1MHz1 000 MHz. At the same time, the detector should be rotated to observe and record the working condition of the detector. If the transmitting antenna used is directional, the transmitting antenna should be reversed first and the test should be conducted with the detector. Within the frequency range of 1MHz~1000MHz, the test should be conducted with the horizontal polarization and vertical polarization of the antenna respectively.
6.14.3:4 During the test, observe and record the working condition of the detector. 6.14.3.5 The test should be conducted in a shielded room. To avoid large measurement errors, the position of the antenna should meet the requirements of Figure 2. Detector
Power signal generator antenna
Obstacle or screen room wall
Electromagnetic interference measuring instrument antenna
Figure 2 Antenna location diagram
6.14.3.6 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.14.4 Test equipment
The test equipment shall meet the requirements of Chapter 4 of GB16838-1997. 6.15 Electrostatic discharge test
6.15.1 Purpose
To test the adaptability of the detector to electrostatic discharge caused by statically charged personnel and objects. 10
6.15.2 Requirements
The anti-static discharge performance of the detector shall meet the requirements of 5.1.14. 6.15.3 Method
GB15322.1—2003
6.15.3.1 Place the detector on an insulating bracket and keep it at least 100mm away from the grounding plate. Turn on the power supply and keep the detector in normal monitoring state for 20 minutes.
6.15.3.2 Adjust the output voltage of the electrostatic generator to 8000V. Use the spherical discharge head to charge and touch the surface of the detector as soon as possible, making sure to make contact (but not damaging the detector). After each discharge, the electrostatic generator should be removed and charged. Discharge the detector surface 8 times in total and discharge the grounding plate 100mm around the detector twice. The time interval between each discharge is at least 1s. During the test, observe and record the working state of the detector.
6.15.3.3 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.15.4 Test equipment
The test equipment shall meet the requirements of Chapter 4 of GB16838-1997. 6.16 Electrical transient pulse test
6.16.1 Purpose
To test the detector's ability to resist electrical transient pulse interference. 6.16.2 Requirements
The detector's ability to resist electrical transient pulse interference shall meet the requirements of 5.1.14. 6.16.3 Methods
6.16.3.1 The detector is in normal monitoring state, and a positive and negative polarity transient pulse voltage of 2000V±10% and a frequency of 2.5kHz±20% is applied to the AC power line of the AC power supply detector (see Figure 3 for waveform). The transient pulse voltage is applied for 15ms every 300ms (see Figure 4). The transient pulse voltage is applied for 60°1°$ each time. During the test, monitor whether the detector sends an alarm signal or an unrecoverable fault signal.
6.16.3.2 Place the detector in normal monitoring mode, apply a positive and negative polarity transient pulse voltage of 1000V±10% and a frequency of 5kHz±20% to the other external connections of the detector (see Figure 3 for the waveform), apply a transient pulse voltage for 15ms every 300ms (see Figure 4), and apply the transient pulse voltage for 60+1°s each time. During the test, observe and record the working status of the detector. U
50ns±30%
5ns±30%
Figure 3 Single pulse waveform under 50Q load
6.16.3.3 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.16.4 Test equipment3 Methods
GB15322.1—2003
6.15.3.1 Place the detector on an insulating bracket and keep it at least 100mm away from the grounding plate. Turn on the power supply and keep the detector in normal monitoring state for 20 minutes.
6.15.3.2 Adjust the output voltage of the electrostatic generator to 8000V. Use the spherical discharge head to charge and touch the surface of the detector as soon as possible, making sure to make contact (but not damaging the detector). After each discharge, the electrostatic generator should be removed and charged. Discharge the detector surface 8 times in total and discharge the grounding plate 100mm around the detector twice. The time interval between each discharge is at least 1s. During the test, observe and record the working state of the detector.
6.15.3.3 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.15.4 Test equipment
The test equipment should meet the requirements of Chapter 4 of GB16838—1997. 6.16 Electrical transient pulse test
6.16.1 Purpose
To test the detector's ability to resist electrical transient pulse interference. 6.16.2 Requirements
The detector's ability to resist electrical transient pulse interference shall meet the requirements of 5.1.14. 6.16.3 Methods
6.16.3.1 Put the detector in normal monitoring state, apply a positive and negative polarity transient pulse voltage of 2000V±10% and a frequency of 2.5kHz±20% to the AC power line of the AC power supply detector (see Figure 3 for waveform), apply the transient pulse voltage for 15ms every 300ms (see Figure 4), and apply the transient pulse voltage for 60°1°$ each time. During the test, monitor whether the detector sends out an alarm signal or an irrecoverable fault signal.
6.16.3.2 Place the detector in normal monitoring mode, apply a positive and negative polarity transient pulse voltage of 1000V±10% and a frequency of 5kHz±20% to the other external connections of the detector (see Figure 3 for the waveform), apply a transient pulse voltage for 15ms every 300ms (see Figure 4), and apply the transient pulse voltage for 60+1°s each time. During the test, observe and record the working status of the detector. U
50ns±30%
5ns±30%
Figure 3 Single pulse waveform under 50Q load
6.16.3.3 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.16.4 Test equipment3 Methods
GB15322.1—2003
6.15.3.1 Place the detector on an insulating bracket and keep it at least 100mm away from the grounding plate. Turn on the power supply and keep the detector in normal monitoring state for 20 minutes.
6.15.3.2 Adjust the output voltage of the electrostatic generator to 8000V. Use the spherical discharge head to charge and touch the surface of the detector as soon as possible, making sure to make contact (but not damaging the detector). After each discharge, the electrostatic generator should be removed and charged. Discharge the detector surface 8 times in total and discharge the grounding plate 100mm around the detector twice. The time interval between each discharge is at least 1s. During the test, observe and record the working state of the detector.
6.15.3.3 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.15.4 Test equipment
The test equipment should meet the requirements of Chapter 4 of GB16838—1997. 6.16 Electrical transient pulse test
6.16.1 Purpose
To test the detector's ability to resist electrical transient pulse interference. 6.16.2 Requirements
The detector's ability to resist electrical transient pulse interference shall meet the requirements of 5.1.14. 6.16.3 Methods
6.16.3.1 Put the detector in normal monitoring state, apply a positive and negative polarity transient pulse voltage of 2000V±10% and a frequency of 2.5kHz±20% to the AC power line of the AC power supply detector (see Figure 3 for waveform), apply the transient pulse voltage for 15ms every 300ms (see Figure 4), and apply the transient pulse voltage for 60°1°$ each time. During the test, monitor whether the detector sends out an alarm signal or an irrecoverable fault signal.
6.16.3.2 Place the detector in normal monitoring mode, apply a positive and negative polarity transient pulse voltage of 1000V±10% and a frequency of 5kHz±20% to the other external connections of the detector (see Figure 3 for the waveform), apply a transient pulse voltage for 15ms every 300ms (see Figure 4), and apply the transient pulse voltage for 60+1°s each time. During the test, observe and record the working status of the detector. U
50ns±30%
5ns±30%
Figure 3 Single pulse waveform under 50Q load
6.16.3.3 After the test, measure the alarm action value of the detector according to the method in 6.4.3. 6.16.4 Test equipment
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