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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. DL/T 1987-2019: (Technical condition for online monitoring and alarming device for sulfur hexafluoride gas leakage) Status: Valid
Basic dataStandard ID: DL/T 1987-2019 (DL/T1987-2019)Description (Translated English): (Technical condition for online monitoring and alarming device for sulfur hexafluoride gas leakage) Sector / Industry: Electricity & Power Industry Standard (Recommended) Classification of Chinese Standard: F20 Word Count Estimation: 13,167 Date of Issue: 2019-06-04 Date of Implementation: 2019-10-01 Regulation (derived from): Natural Resources Department Announcement No. 7 of 2019 Issuing agency(ies): National Energy Administration DL/T 1987-2019: (Technical condition for online monitoring and alarming device for sulfur hexafluoride gas leakage)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Technical specifications of sulfur hexafluoride on-line leakage monitoring and alarming equipments DL/T 996-2019 ICS 27.10 F 20 People's Republic of China Electric Power Industry Standard Online monitoring of sulfur hexafluoride gas leakage Technical conditions of alarm device 2019-06-04 released 2019-10-01 implementation Issued by National Energy Administration Table of contentsForeword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Device composition...2 5 Technical requirements...3 6 Test method...6 7 Inspection rules...9 8 Marking, packaging, transportation, storage...10 9 Supply complete set...10ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation". Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the National Electrochemical Standardization Technical Committee. This standard was drafted by. State Grid Shandong Electric Power Research Institute, State Grid Anhui Electric Power Co., Ltd. Electric Power Research Institute, State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute, State Grid Zhejiang Electric Power Co., Ltd. Electric Power Research Institute, Guangxi Power Grid Co., Ltd. Served as the company’s Electric Power Research Institute, Guangdong Power Grid Co., Ltd. Electric Power Research Institute, Henan Hitachi Xin Co., Ltd., State Grid Lake Maintenance company of North Electric Power Company. The main drafters of this standard. Yu Naihai, Qi Jiong, Xie Lianke, Xu Ting, Zhu Hongbin, Ming Julan, Zhu Liping, Li Xiaodian, Fu Hanjiang, Li Jianguo, Qi Guodong, Leng Shubo, Yu Xiang, Ma Yan, Chen Ying, He Shukai. This standard is issued for the first time. The opinions or suggestions during the implementation of this standard are fed back to the Standardization Center of the China Electricity Council (Baiguang Road, Beijing No. 100761). Technical requirements of online monitoring and alarming device for sulfur hexafluoride gas leakage1 ScopeThis standard specifies the technical requirements, test methods, and inspections for online monitoring and alarm devices for sulfur hexafluoride gas leakage (hereinafter referred to as devices) Rules and requirements for marking, packaging, transportation, and storage. This standard applies to the production and inspection of online monitoring and alarm devices for sulfur hexafluoride gas leakage in the workplace of indoor sulfur hexafluoride electrical equipment. For the production and inspection of on-line monitoring alarm devices for sulfur hexafluoride gas leakage in other places, please refer to it.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 191 Packaging, storage and transportation pictorial signs GB/T 6587-2012 General Specification for Electronic Measuring Instruments GB/T 9969 General Rules for the Use of Industrial Products GB/T 13384 General technical conditions for packaging of mechanical and electrical products GB/T 17626.2-2006 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic field radiation immunity test GB/T 17626.4-2008 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test GB/T 17626.5-2008 Electromagnetic compatibility test and measurement technology surge (impact) immunity test GB/T 17626.8-2006 Electromagnetic compatibility test and measurement technology Power frequency magnetic field immunity test GB/T 17626.11-2008 Electromagnetic compatibility test and measurement technology Voltage sag, short-term interruption and voltage change immunity test GB/T 18268.1-2010 Electromagnetic compatibility requirements for electrical equipment for measurement, control and laboratory use-Part 1.General requirements GB 20936.1-2007 Electrical equipment for combustible gas detection Part 1.General requirements and test methods GB/T 25480 Basic environmental conditions and test methods for transportation and storage of instruments and meters JJG 205-2005 Mechanical Thermometer JJG 365-2008 Electrochemical Oxygen Analyzer JJF 1263-2010 Calibration Specification for Sulfur Hexafluoride Detection Alarm DL/T 1555-2016 Guidelines for operation and maintenance of on-line monitoring and alarm devices for sulfur hexafluoride gas leakage3 Terms and definitionsThe following terms and definitions defined in GB 20936.1-2007 and DL/T 1555-2016 apply to this document. 3.1 On-line monitoring and alarm device for leakage of sulfur hexafluoride gas Installed in indoor workplaces to continuously or periodically automatically monitor the sulfur hexafluoride gas content and oxygen content in the ambient air, A device that sends out an alarm signal and can trigger the fan when the alarm setting value is reached or exceeded. It is generally composed of a monitoring host, a detection unit and an alarm unit And other parts. 3.2 Pump aspirating device Through the gas sampling pump, the gas in the detection area is sucked and sent to the sensor for detection and alarm. [Modify GB 20936.1-2007, terms and definitions 3.2.2] 3.3 Diffusion device Compared with the pump suction device, through the irregular movement of molecules, the gas in the detection area is freely diffused and transported to the sensor for detection. Police device. [Modify GB 20936.1-2007, terms and definitions 3.2.4] 3.4 Alarm error Under test conditions, the maximum allowable deviation between the standard gas concentration value when the device alarms and the alarm set value. [Modify DL/T 1555-2016, terms and definitions 3.2] 3.5 Alarm setting value The gas alarm concentration value preset by the device. [DL/T 1555-2016, Terminology and Definition 3.3]4 Device composition4.1 Monitoring the host It should be able to complete detection data processing, display and upload, send control instructions, alarm data storage, alarm control, alarm query, etc. when When an alarm signal is issued, the host should automatically start the fan exhaust, and the exhaust time can be flexibly set. 4.2 Detection unit Complete gas collection and signal processing. It should include gas collector, sulfur hexafluoride gas sensor, oxygen sensor, temperature and humidity sensor And the human body induction infrared sensor and so on. 4.3 Alarm unit The sulfur hexafluoride gas content, temperature and humidity values in the indoor working environment reach or exceed the set alarm value, or the oxygen content is lower than the set When the alarm value is reached, the device should be able to send out an alarm signal, as well as sound and light warnings. It should include sound and light alarms, fan controllers, etc. 4.4 Device structure diagram According to different sampling methods, the device can be divided into two types. diffusion type and pump suction type. Figure 1 and Figure 2 are typical diffusion and pump suction respectively Schematic diagram of type device structure. 5.1.2 Power supply The power supply of the device shall meet the following requirements. a) Power supply voltage. (220±22)V; b) Power frequency. (50±2.5) Hz. 5.2 Appearance The appearance of the device should meet the following requirements. a) The housing of the device and various accessory equipment has no obvious scratches, dents, or deformation, and the surface is clean and stain-free; b) The nameplate marks, words and symbols are correct, easy to distinguish and clear. 5.3 Basic functions The basic functions of the device should meet the following requirements. a) It has the functions of real-time quantitative monitoring of sulfur hexafluoride gas content, oxygen content, ambient temperature, and ambient humidity; b) With functions such as automatic start and stop of the fan, timing start and stop of the fan, forced start and stop of the fan, automatic voice alarm, sound and light alarm, etc., the alarm limit The value can be modified; c) With infrared monitoring function, it can support human body induction, and the induction range should not be less than 3m. When someone approaches the indoor workplace, The system automatically prompts the safety status of the working environment; d) It has the functions of data storage and query, as well as automatic recording, automatic storage and automatic update of alarm events; e) With data upload function, the interface should adopt RS485, support alarm switch output; f) It has self-check and automatic correction functions, and should have an online calibration mode and interface; g) The measuring sensor should have dust protection function; h) The device may contain two or more gas sampling and detection points, which shall meet the requirements of on-site expansion; i) When the device works abnormally, it has a fault alarm prompt function. 5.4 Electrical safety performance 5.4.1 Insulation resistance Under normal environmental conditions, the insulation resistance of the power input terminal to the chassis and ground should not be less than 20MΩ. 5.4.2 Insulation strength Under normal environmental conditions, the power input end can withstand an effective value of 1500V, 50Hz sinusoidal AC voltage to the chassis and ground for 1min. Breakdown and arcing phenomenon. 5.5 Detection performance 5.5.1 Detection of sulfur hexafluoride gas content The detection performance of the sulfur hexafluoride content of the device should meet the following requirements. a) Detection range. 0μL/L～1500μL/L; b) Indication error. no more than ±30μL/L or ±5% (display value); c) Alarm error. no more than ±5% (alarm setting value); d) Repeatability. not more than 3%; e) Response time. not more than 60s for diffusion type device, not more than 30s for pump suction type device; f) Minimum detection limit. 30μL/L; g) Zero drift. not more than ±3%FS; h) Range drift. not more than ±3% FS. Note. "FS" means the full scale of the instrument. 5.5.2 Oxygen content detection The oxygen content detection performance of the device should meet the following requirements. a) Detection range. 0-25% (volume ratio); b) Indication error. no more than ±0.5% (volume ratio); c) Alarm error. no more than ±0.5% (volume ratio); d) Repeatability. not more than 1%; e) Response time. not more than 60s for diffusion type device, not more than 30s for pump suction type device; f) Zero drift. no more than ±1%FS; g) Range drift. not more than ±1% FS. 5.5.3 Temperature detection The temperature sensor of the device shall meet the following requirements. a) Detection range. -10℃～50℃; b) Detection error. no more than ±2℃. 5.5.4 Humidity detection The humidity sensor of the device should meet the following requirements. a) Detection range. 0～99%RH; b) Detection error. no more than ±5%RH. 5.6 Environmental adaptability The environmental impact of the device includes five aspects. temperature, humidity, vibration, shock, packaging and transportation, among which temperature, humidity, vibration, The impact should meet the relevant requirements of GB/T 6587-2012 in 4.7 Environmental Group as Group Ⅱ, and the packaging and transportation should comply with GB/T 6587-2012 In 5.10, the circulation condition level is specified as level 2, and the performance characteristics of the device are investigated for indication error and alarm error. 5.7 Power adaptability The power adaptability of the device should meet the requirements of 4.10 in GB/T 6587-2012. 5.8 Electromagnetic compatibility The electromagnetic compatibility of the device should meet the special immunity requirements of equipment used in industrial sites in 6.2 of GB/T 18268.1-2010, of which. a) Electrostatic discharge immunity should meet the test requirements of test level 3 specified in 5 of GB/T 17626.2-2006; b) The radio frequency electromagnetic field radiation immunity should meet the test requirements of test level 3 specified in 5 of GB/T 17626.3-2016; c) The immunity of the electrical fast transient pulse group shall meet the test requirements of test level 3 specified in 5 of GB/T 17626.4-2008; d) Surge (impact) immunity should meet the test requirements of test level 3 specified in 5 of GB/T 17626.5-2008; e) The power frequency magnetic field immunity test should meet the test requirements of test level 4 specified in 5 of GB/T 17626.8-2006; f) The immunity to voltage sags and short-term interruptions should meet the severity level category 3 test specified in GB/T 17626.11-2008 5 Claim. 5.9 Long-term stability Under normal environmental conditions, the device should be able to operate continuously for 28 days. During the test, the device should be able to work normally. After the test, the value of the device is incorrect. The error and alarm error shall meet the requirements of 5.5.1 and 5.5.2.6 Test method6.1 Test conditions In addition to the environmental adaptability test, the test conditions of the device should meet the following requirements. a) Ambient temperature. 15℃～35℃; b) Environmental humidity. not more than 85%RH; c) Power supply voltage. (220±11)V; d) Power frequency. (50±0.5) Hz; e) The working environment should be free of electromagnetic fields and interference gases that affect the normal operation of the instrument. 6.2 Standard appliances and auxiliary equipment The standard equipment and auxiliary equipment mainly used for the test shall meet the requirements of Table 1. 6.3 Visual inspection The appearance of the device is inspected by visual inspection, and the result should meet the requirements of 5.2. 6.4 Basic function check Start the device and perform various functional inspections according to the product manual. The results should meet the requirements of 5.3. 6.5 Electrical safety performance test 6.5.1 Insulation resistance test The device is not connected to the power supply, but the power switch is turned on, and the power input end of the device is measured with a 500V insulation resistance meter to the case and ground. The result should meet the requirements of 5.4.1. 6.5.2 Dielectric strength test The device is not connected to the power supply, but the power switch is turned on. For devices that use industrial frequency power supply, use an AC withstand voltage tester to Apply a voltage of 1500V between the source input terminal and the chassis and ground for 1 min. The result should meet the requirements of 5.4.2. 6.6 Detection performance test 6.6.1 Detection of sulfur hexafluoride gas content 6.6.1.1 Indication error According to the method specified in 5.2.2 of JJF 1263-2010, carry out the error test of the device, and the result should meet the requirements of 5.5.1b). 6.6.1.2 Alarm error Carry out alarm error test on the device according to the method specified in 7.3.4.1 of DL/T 1555-2016, and the result should meet the requirements of 5.5.1c). 6.6.1.3 Repeatability Carry out the repeatability test on the device according to the method specified in 7.3.6 of DL/T 1555-2016, and the result should meet the requirements of 5.5.1d). 6.6.1.4 Response time Carry out the response time test of the device according to the method specified in 7.3.5.1 of DL/T 1555-2016, and the result should meet the requirements of 5.5.1e). 6.6.1.5 Minimum detection limit Perform the minimum detection limit test on the device according to the method specified in 5.2.6 of JJF 1263-2010, and the result should meet the requirements of 5.5.1f). 6.6.1.6 Drift According to the method specified in 5.2.8 of JJF 1263-2010, carry out zero drift and span drift test on the device, and the result should conform to 5.5.1g) And 5.5.1h) requirements. 6.6.2 Oxygen content detection 6.6.2.1 Indication error Use oxygen standard gas with a concentration of about 20%, 40%, 60%, and 80% of full scale, according to the method specified in 7.3.3.2 of DL/T 1555-2016 Method to carry out indication error test on the device, the result should meet the requirements of 5.5.2b). 6.6.2.2 Alarm error Carry out alarm error test on the device according to the method specified in 7.3.4.2 of DL/T 1555-2016, and the result should meet the requirements of 5.5.2c) begging. 6.6.2.3 Repeatability Carry out the repeatability test on the device according to the method specified in 7.3.6 of DL/T 1555-2016, and the result should meet the requirements of 5.5.2d). 6.6.2.4 Response time The response time test of the device shall be conducted according to the method specified in 7.3.5.2 of DL/T 1555-2016, and the result shall meet the requirements of 5.5.2e). 6.6.2.5 Drift According to the method specified in 5.3.8 of JJG 365-2008, carry out the zero drift and span drift test of the device, and the results should meet 5.5.2f) and 5.5.1g) requirements. 6.6.3 Temperature sensor test Place the device temperature sensor in a temperature and humidity standard box, set the temperature test points to -5℃, 10℃, 25℃, 40℃, and press JJG 205 -Perform the temperature indication error test with the method specified in 7.3.2 of.2005, and the result should meet the requirements of 5.5.3. 6.6.4 Humidity sensor test Place the humidity sensor of the device in a temperature and humidity standard box, and set the humidity test points as 20%RH, 40%RH, 60%RH, and 80%RH, according to JJG 205 -The humidity indication error test is carried out in the method specified in 7.3.2 of.2005, and the result should meet the requirements of 5.5.4. 6.7 Environmental adaptability test 6.7.1 Temperature, humidity, vibration, shock test The temperature, humidity, vibration, and shock tests of the device shall be carried out in accordance with the regulations and methods specified in GB/T 6587-2012 for 5.9 Environmental Group as Group II. The result should meet the requirements of 5.6. 6.7.2 Packaging and transportation test The packaging and transportation test of the device is carried out in accordance with the test requirements and test methods specified in 5.10 Circulation Condition Level 2 of GB/T 6587-2012. The result should meet the requirements of 5.6. 6.8 Power adaptability test The power adaptability test of the device is carried out in accordance with the provisions and methods in 5.12 of GB/T 6587-2012, and the results should meet the requirements of 5.7. 6.9 Electromagnetic compatibility test 6.9.1 Electrostatic discharge immunity test The device is carried out in accordance with the provisions and methods in GB/T 17626.2-2006 8; test level. level 3; test object. device housing; test result The results should meet the requirements of 5.8a). 6.9.2 Radio frequency electromagnetic field radiation immunity test The device is carried out in accordance with the provisions and methods in GB/T 17626.3-2016 8; test level. level 3; test object. device housing; test result The results should meet the requirements of 5.8b). 6.9.3 El......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of DL/T 1987-2019_English be delivered?Answer: Upon your order, we will start to translate DL/T 1987-2019_English as soon as possible, and keep you informed of the progress. 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