This standard specifies the definition, classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of lightning protection devices for computer information systems. This standard applies to the manufacture, maintenance and inspection of lightning protection devices for computer information systems to prevent damage caused by lightning electromagnetic pulse induced overvoltage and overcurrent. GA 173-2002 Computer Information System Lightning Protection Devices GA173-2002 Standard download decompression password: www.bzxz.net

ICS35.020
People's Republic of China Public Security Industry Standard GA 173—2002
Replaces GA173-1998
Lightning protector for computer information system
Lightning protector forcomputer information system2002-12-11 Issued
Ministry of Public Security of the People's Republic of China
Implementation on 2003-05-01
Normative reference documents
Terms and definitions·
Classification of lightning protection devices
Grading of lightning protection devices
Technical requirements
Electrical performance test method
Environmental adaptability test method,
Inspection rules·
Marking, packaging, transportation and storage
GA173—2002
All technical contents of this standard are mandatory. Foreword
This standard is a revised draft of GA173-1998 "Computer Information System Lightning Protection Device". The main revisions are as follows: GA173-2002
1) The relationship between the nominal conduction voltage U. and the rated voltage U.; 2) The leakage current of the series AC power lightning protection device; 3) In the classification of power lightning protection devices, the impulse current capacity is increased by 40kA level; 4) In the classification of power lightning protection devices, the impulse current capacity is increased by 10kA and 1kA (8/20μs) levels.
Most of the test circuits in this standard use the circuit diagrams in the two standards IEC61643-21; 2000 and 1EEStdC62.36-2000.
This standard replaces GA173-1998 "Computer Information System Lightning Protection Device" from the date of implementation. This standard is proposed by the Public Information Network Security Supervision Bureau of the Ministry of Public Security. This standard is under the jurisdiction of the Information System Security Standardization Technical Committee of the Ministry of Public Security. This standard was drafted by the Communication and Signal Research Institute of the Ministry of Railways. The main drafters of this standard are Qiu Chuanrui, An Qiandong, Wei Jianguo, and Li Yongyi. This standard was first issued in May 1998, and this is the first revision. GA 173-2002
GA173--1998 has been implemented since June 1, 1998, and it has been more than two years. This standard plays an important role in standardizing the use of lightning protection equipment for public computer information systems, ensuring the quality of lightning protection equipment, and improving the safe operation of computer information system equipment during lightning. The main international documents that GA173-1998 is based on are: IEC/TS61312-3 (1996-10) "Protection against Lightning Electromagnetic Pulses" Part 3: Selection of Surge Protectors" and ITU-TKI1 (1990) "Principles of Overvoltage and Overcurrent Protection". At that time, there were no EC or international product standards specifically for "computer information network lightning protection devices". In 1998, IEC published IEC61643-1 (1998-02) "Low Voltage Power Supply In 2000, IEC published IEC61312-3 (2000-07) "Requirements for Surge Protectors". In order to meet the needs of public computer information systems for lightning protection, it is necessary to adjust the structure of GA173-1998 and establish a new standard for computer information system lightning protection devices. 1 Scope
Computer Information System Lightning Protection Devices
GA173-2002
This standard specifies Definition, classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of lightning protection devices for computer information systems.
This standard applies to the manufacture, maintenance and inspection of lightning protection devices for computer information systems to prevent damage caused by lightning electromagnetic pulse induced overvoltage and overcurrent.
2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, its latest version applies to this standard. GB/T2423.1-2001 Environmental testing for electric and electronic products Part 2: Test methods Test A: Low temperature (idtIEC68-2-1:1990)
GB/T2423.2—2001
60068 -2-2:1974)
GB/T2423.3—1993
68-2-3:1984)
GB/T2423.17—1993
11:1981 )
GB/T2423.21—1991
2-13:1983)
GB/T2828—1987wwW.bzxz.Net
GB/T2829-2002
GB /T34821983
GB/T3483—1983
GB/T9043—1999
GB/T10193—1997
GB/T10194—1997
IEC1051-2:1991)
Environmental testing for electric and electronic products Part 2: Test methods Test B: High temperature (idtIEC basic environmental testing procedures for electric and electronic products Test Ca: Steady humidity Thermal test method (eqvIEC Basic environmental test procedures for electric and electronic products Test Ka: Salt spray test method (egvIEC68-2 Basic environmental test procedures for electric and electronic products Test M: Low pressure test method (neqIEC68 Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) Periodic inspection counting sampling procedure and table (applicable to inspection of process stability) Lightning test method for electronic equipment
Guidelines for lightning test for electronic equipment
General technical conditions for gas discharge tubes for overvoltage protection of communication equipment Varistors for electronic equipment Part 1: General specification (idt1EC1051-1:1991) Varistors for electronic equipment Part 2: Sectional specification Surge suppression varistors (idtGB/T16927.1-1997
3 Terms and definitions
High voltage test technology Part 1: General test requirements (eqvIEC60-1:1989) The following terms and definitions apply to this standard. 3.1
Surge
The transient wave of current, voltage or power transmitted along the line. Its characteristic is that it rises quickly and then falls slowly. 3.2
GA1732002
Surge protector surge protective device (SPD) is a device used to limit transient overvoltage and discharge corresponding transient overcurrent. It should contain at least one nonlinear element. 3.3
Lightning protector lightning protector is a device used to limit lightning transient overvoltage and transient overcurrent. Lightning protector is a type of surge protector. 3.4
Rated voltage U. maximum continuous operating voltage U. The effective value of the AC voltage and the maximum value of the DC voltage that can be continuously applied to the lightning protector. This value is the rated voltage value. 3.5
Impulse discharge voltage UmpsparkovervoltagewithvoltageimpulseUWhen a 1kV/μs impulse voltage is applied between the input terminals of the lightning arrester or between the input terminal and the grounding terminal, the peak voltage between the terminals where the impulse voltage is applied.
Nominal conductive voltage UnominalconductivevoltageU.When a constant 1mA DC current is applied, the discharge voltage between the line terminal and the common grounding terminal of the lightning arrester without a series gap. If a lightning arrester with a series gap discharges when the DC voltage is increased, the terminal voltage of the lightning arrester when the DC current is adjusted to 1mA.
Nominal discharge current I, nominaldischargecurrentIThe maximum impulse current peak value of the lightning arrester that can pass through the specified number of times and the specified waveform without substantial damage. Also known as impulse current capacity. In this standard, the current waveform is 8/20us. 3.8
Maximum discharge current ImaximumdischargecurrentI The current limit value that the lightning protection device can pass through a current wave with a current waveform of 8/20μs without substantial damage. It is called the limit impulse current carrying capacity. It should be more than twice the nominal discharge current 1. 3.9
UrresidualvoltageUm
When the discharge current passes through the lightning arrester, the peak voltage appears between the specified terminals of the lightning arrester. 3.10
Limiting voltage U, measuredlimitingvoltageUWhen a shock wave of specified amplitude and specified waveform is applied, the peak voltage measured between the specified terminals of the lightning arrester. Limiting voltage is a special case of residual voltage.
Leakage current, leakagecurrentI
When a parallel power lightning arrester is applied with 75% of the nominal conduction voltage U,, the current flowing through the power lightning arrester. 3.12
Insertion loss a. insertionlossa.
The loss caused by inserting a lightning arrester in the transmission system. At a given frequency, the ratio of the power measured at the insertion point of the lightning arrester before and after the lightning arrester of the measured channel is connected to the line. This insertion loss is usually expressed in decibels (dB). 3.13
Data transmission rate (bit/s)
datatransmissionrate(bit/s)
After the channel lightning arrester is connected to the transmission line of the protected system that transmits digital signals, the insertion loss is not greater than the upper limit of the specified value of the data transmission rate.
Transmission frequency fetransmissionfrequencyfcGA173—2002
After the channel lightning arrester is connected to the transmission line of the protected system that transmits analog signals, the insertion loss is not greater than the upper limit of the specified value of the analog signal frequency.
Voltage regulation rate AU%percentagevoitageregulationAU%After the series lightning arrester is connected to the power line, the ratio of the voltage drop of the lightning arrester to the input voltage, expressed as a percentage. 3.16
AC following current
The phenomenon that the power supply lightning protection device including the parallel connection is broken down and discharged by the lightning overvoltage, and the power supply lightning protection device in parallel connection still allows the AC current from the feeder circuit to flow after the lightning overvoltage disappears is called AC following current. Classification of lightning protection devices
According to the purpose, lightning protection devices are divided into two categories: power supply lightning protection devices and channel lightning protection devices. The classification is shown in Table 1. Table 1 Classification of lightning protection devices by purpose
AC power supply lightning protection device
Protector
Single-phase AC power supply lightning protection device
Three-phase AC power supply lightning protection device
DC power supply lightning protection device
AC/DC dual-purpose power supply lightning protection device
Channel lightning protection device
Coaxial channel lightning protection device
Non-grid axis channel lightning protection device
According to the way of connecting to the circuit, lightning protection devices are divided into series lightning protection devices and parallel lightning protection devices. See Table 2 for classification. 4.2
Table 2 Classification of lightning protection devices according to the way they are connected to the circuit Table Connected single-phase AC power lightning protection device (rated voltage U is 220V)
Series three-phase AC power lightning protection device (rated voltage U is 380V)
Series DC power protection device
Connected type Channel lightning protection device
Parallel type single-phase AC power lightning protection device (rated voltage U. of 220V)
Parallel type three-phase AC power lightning protection device (rated voltage U. of 380V)
Parallel type DC power lightning protection device
Parallel type channel lightning protection device
4.3 According to the protection principle, lightning protection devices are divided into three types: voltage switch type, voltage limiting type, and comprehensive type. 4.3.1 The voltage switch type lightning protection device has high impedance when there is no lightning wave, but when the response wave is on, the impedance suddenly becomes zero. The components used in the voltage switch type lightning protection device include air discharge gap, gas-filled discharge tube, thyristor rectifier, three-terminal thyristor switch, etc. 4.3.2 Voltage-limited lightning arresters have high impedance when there is no lightning surge, but the impedance decreases as the surge voltage and surge current increase. Usually, the components used in this nonlinear device are varistors and transient suppression diodes. This type of lightning arrester is also called "box-type lightning arrester".
4.3.3 Comprehensive lightning arresters contain both voltage switching components and voltage limiting components, and exhibit voltage switching characteristics and voltage limiting characteristics.
According to the equipment installation method, lightning arresters are divided into two categories: fixed and movable. 4.4
Grading of lightning arresters
Lightning arresters are divided into five levels: 1, 2, 3, 4, and 5 according to their nominal discharge current and limiting voltage to meet different safety protection needs.
The classification of single-phase AC 220V power supply lightning arresters is shown in Table 3. Table 3 Classification table of single-phase AC 220V power supply lightning protection device Level
Products with nominal discharge current of 40kA
Limiting voltage
Products with nominal discharge current of 20kA
Products with nominal discharge current of 10kA
Products with nominal discharge current of 5kA
Classification of three-phase AC 380V power supply lightning protection device is shown in Table 4. 2
≤1500V
≤500V
Table 4 Classification table of three-phase AC 380V power supply lightning protection device Level
Products with nominal discharge current of 40kA
Limiting voltage
Products with nominal discharge current of 20kA
Products with nominal discharge current of 10kA
Classification of DC power supply lightning protection device is shown in Table 5. Table 5
Products with a nominal discharge current of 20kA
Limiting voltage
Products with a nominal discharge current of 10kA
Products with a nominal discharge current of 5kA
The classification of channel lightning protection devices is shown in Table 6.
Products with a nominal discharge current of 10kA
Limiting voltage
Technical requirements
Products with a nominal discharge current of 5kA
Products with a nominal discharge current of 3kA
Products with a nominal discharge current of 1kA
6.1 Electrical requirements
Classification table of DC power supply lightning protection devices
≤150V
≤120V
≤80V
Channel protection Classification table of lightning protection devices
≤700V
≤120V
≤190V
≤500V
≤80V
≤330V
≤30V
The varistor used in the lightning protection device must meet the requirements of GB/T10193-1997 and GB/T10194-1997, and the gas discharge tube used must meet the requirements of GB/T9043--1999. Other main protective devices must adopt excellent products with industry standards. The power supply lightning protection device should take measures to prevent the gas discharge tube from continuing current and the varistor from deteriorating in the lightning protection device. 6.1.1 The lightning protection device should be equipped with terminals to achieve electrical connection through screws, nuts, plugs, jacks or other equivalent means. The design of the terminals should be able to withstand the corresponding current value and adapt to the cable connection with the largest or smallest cross-sectional area. Its structure should be convenient for troubleshooting and maintenance.
The technical parameters of the power supply lightning protection device are shown in Table 7. The technical parameters of the channel lightning protection device are shown in Table 8. Table 7 Technical parameters of power supply lightning protection device Technical parameters
Parallel type single-phase AC
Power supply storage protection device
Parallel type three-phase AC
Power supply lightning protection device
Parallel type DC power supply
Lightning protection device
Shenlian type single-phase AC
Power supply lightning protection device
Shenlian type three-phase AC
Power supply lightning protection device
Series type DC power supply
Lightning protection device
Non-coaxial channel lightning protection device
Coaxial channel lightning protection device
Nominal discharge current 1
(test current waveform 8/20(s)
Limiting voltage U(test
current waveform 8/20μ5,
Nominal conduction
U.≥1.2U.
U.≥1.2U.
Tidal discharge current
≤20μA
Table 8 Technical parameters of channel lightning protection device
Nominal discharge current 1,
(test current wave
shape 8/20μs)
Limiting voltage U (test
voltage waveform
10/700μs)
Clock strike sensitive current
Nominal conduction
voltage U,
U.≥1.2U.
Voltage U
(test voltage
waveform kV
≤600V
Impact discharge voltage
Um (test voltage wave
shape 1kV/μs)
≤1500V
|≤1800V
≤1000V
Insertion loss a. (Tested within the maximum data transmission rate or frequency)
Voltage regulation
Standing wave ratio
6.1.3 The power supply lightning protection protector can be equipped with a circuit breaker (which can be installed either externally or internally). The operation of the power supply lightning protection protector equipped with a circuit breaker should have an indication. When the circuit breaker is activated or the power supply lightning protection protector fails, there should be a light alarm. If the product design integrates the protector and the external circuit breaker as a whole, the power supply lightning protection protector and the circuit breaker should be tested together during the type test and acceptance test, and ensure that the circuit breaker shall not operate during the test. 6.1.4 The power supply lightning protection protector that uses a varistor alone should have a failure display function . 6.1.5 The insulating medium of the power supply lightning arrester should have a certain insulation breakdown strength. There should be sufficient arc creepage protection distance between the surfaces of two components with potential difference.
6.2 Mechanical requirements
The lightning arrester should provide installation methods to ensure mechanical stability. 6.2.1
6.2.2 Terminals, plugs and sockets should be fixed to the lightning arrester, and plugs and sockets should comply with national and international standards. The terminals should have sufficient mechanical strength. Electrical or mechanical connections should have a certain mechanical strength during normal use. 6.2.3 Current-bearing components and connections, including components used as protective conductors, should be copper or other metals or coated metals with better corrosion resistance than copper.
GA173—2002
6.2 .4 The fastening screws and nuts of the terminals used to connect the protective conductors should be able to prevent sudden loosening. Composite sealing materials or resins can be used to prevent the terminals from loosening during operation.
6.3 Environmental requirements
6.3.1 The lightning protection device should work reliably under the following environmental conditions: working temperature: -5℃~+40℃;
Relative humidity: less than 90% (temperature +25℃); air pressure: not less than 70kPa (equivalent to an altitude of less than 3000m). 6.3.2 The lightning protection device directly used in outdoor exposed environments should have sun protection and rain protection functions. 6.3.3 After the salt spray test, the color of the metal parts of the lightning protection device should not be obviously darkened or the coating should not have uniform and continuous mild film corrosion. The corrosion area of ​​the coating should be less than 3%, and the main metal should be free of corrosion. 6.3.4 The plastic parts of the window protection device should have heat resistance and should not be deformed at high temperatures. 6.4 Safety requirements
6.4.1 The design of the lightning arrester should prevent personnel from directly contacting the conductive metal parts of the arrester to ensure personal safety. 6.4.2 The shell of the power lightning arrester should be made of non-combustible or flame-retardant materials. It should not ignite when a test flame with a duration of 1 minute is applied.
6.5 Appearance requirements
The surface of the metal parts of the lightning arrester should be smooth and should not have surface defects. The coating appearance must be smooth and delicate, without spots, protrusions and unplated areas. The surface of plastic parts should be flat and shiny, without defects such as cracks, swelling, looseness, bubbles, etc. The terminals, nuts, plugs, and jacks should be in good condition.
7 Electrical performance test method
7.1 Test requirements
7.1.1 The electrical performance test of the lightning arrester should be carried out under standard atmospheric conditions. 7.1.2 During the test, the lightning arrester should be fixed and electrically connected according to the product installation procedure. External cooling and heating should not be performed. Use the connecting cables specified by the manufacturer to make electrical connections to the protector under test. The entire length of these connecting wires or cables is part of the protector under test.
Repair and disassembly of the protector under test are not allowed during the test. All external switches, circuit breakers, fuses, short-circuit devices and similar devices of the power supply lightning protection protector shall be arranged in accordance with the normal operating conditions specified by the product. 7.1.3 The waveform of the simulation test shall meet the following requirements: 8/20μs impulse current wave must comply with the provisions of GB/T16927.1-1997. The tolerance of the waveform is: a)
Peak value ± 10%
——Wave head time ± 20%
Half peak time ± 20%
Small overshoot and oscillation can be tolerated, but the peak value of any oscillation shall not be greater than 5% of the waveform peak value. After the current returns to zero, any polarity reversal shall not be greater than 20% of the waveform peak value.
When measuring the limiting voltage, overshoot and oscillation are allowed on the impulse wave peak value. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for the convenience of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the limit voltage value on the lightning protection terminal, the measurement accuracy is ±3%, and the bandwidth of the measuring equipment is at least 100MHz. b) 10/700μs shock wave must comply with the provisions of GB/T3483-1983. The tolerance of the waveform is: - Peak ±3%
- Wave head time ±30%
Half peak time ±20%
Overshoot and oscillation are allowed on the shock wave peak value measured by the oscilloscope at the test end, but any oscillation and overshoot are less than 6
GA173-2002
3% of the waveform peak value. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for the convenience of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the voltage value on the lightning protection device terminal, the measurement accuracy is ±3%. The bandwidth of the measuring equipment is at least 10MHz. The short-circuit current of the test generator shall not be greater than 20% of the nominal discharge current of the tested equipment. c) The slope wave with a rise rate of 1kV/μs, the tolerance of the waveform is: peak ±3% The waveform should be between the shaded lines in Figure 1.
Nominal rise rate
TTTTTTTTTTT
00.9TIT11.1TI
0.9T2T21.1T2
Figure 11kv/us rate slope wave deviation diagram
When measuring the voltage value on the lightning protection device terminal, the measurement accuracy is ±3%. The bandwidth of the measuring equipment is at least 100MHz. 7.2 Electrical test procedure
7.2.1 The power supply lightning protection device shall be tested in the following order: a) Parallel type power supply lightning protection device: nominal conduction voltage U.1-leakage current I-impulse discharge voltage Uip-limiting voltage U,-nominal discharge current I-nominal conduction voltage U.1-leakage current 1n. b) Series type power supply lightning protection device: nominal conduction voltage U.1-voltage regulation rate △U% (DC power supply lightning protection device is exempt from test) impulse discharge voltage U-limiting voltage U-nominal discharge current 1,-nominal conduction voltage U.1. 7.2.2 The lightning protection device shall be tested in the following order: insertion loss a.-standing wave ratio (applicable only to antenna feeder coaxial lightning protection device)-nominal conduction voltage U.1-impulse discharge voltage Um-limiting voltage U,-nominal discharge current I.1-nominal conduction voltage U.1. 7.3 Test method
7.3.1 The nominal conduction voltage U of the power supply lightning protection device shall be tested as follows: the instrument accuracy shall not be less than level 2.5. Before the test, the tested lightning protection device shall be placed under standard atmospheric conditions for at least 24 hours. Under the specified 1mA measurement current condition, the positive and negative directions of each line terminal and the grounding electrode of the lightning protection device shall be measured twice in each direction, with a time interval of 15 minutes each time. The measurement time shall not exceed 5s, and shall comply with the provisions of 6.1.2. The nominal conduction voltage U of the parallel power supply lightning protection device. See Figure 2 for the test circuit diagram. The nominal conduction voltage U of the Shenlian power supply lightning protection device and the channel lightning protection device. See Figure 3 for the test circuit diagram.7.3.2 The leakage current of the power supply lightning protection device 1. Test as follows: The leakage current of the parallel power supply lightning protection device 1, the test circuit is shown in Figure 2. After measuring the nominal conduction voltage U. Then, apply 0.75U. value between each line terminal and the grounding electrode of the lightning protection device, and measure the current flowing between the line terminal and the grounding electrode. The instrument accuracy is the same as the requirements of 7.3.1. The test results should meet the requirements of 6.1.2.2.72.7
Voltage U
(Test voltage
waveform kV
≤600V
Impact discharge voltage
Um (Test voltage
waveform 1kV/μs)
≤1500V
≤1800V
≤1000V
Insertion loss a. (Tested within the maximum data transmission rate or frequency)
Voltage regulation
Standing wave ratio
6.1.3 The power supply lightning protection device can be equipped with a circuit breaker (either externally or internally). The power supply protection device equipped with a circuit breaker should have an indication of its operation. When the circuit breaker is activated or the power supply lightning protection device fails, it should There is a light alarm. If the product design integrates the protector and the external circuit breaker as a whole, the power supply lightning protector and the circuit breaker should be tested together during the type test and acceptance test, and ensure that the circuit breaker does not operate during the test. 6.1.4 The power supply lightning protector that uses a varistor alone should have a failure display function. 6.1.5 The insulating medium of the power supply lightning protector should have a certain insulation breakdown strength. There should be sufficient anti-creep arc distance between the surfaces of the two components with potential difference.
6.2 Mechanical requirements
The lightning protector should provide an installation method to ensure mechanical stability. 6.2.1
6.2.2 Terminals, plugs and jacks should be fixed to the lightning protector, and plugs and jacks should comply with national and international standards Requirements. The terminals should have sufficient mechanical strength. Electrical or mechanical connections should have a certain mechanical strength during normal use. 6.2.3 Current-bearing parts and connections, including parts used as protective conductors, should be copper or other metals or coated metals with better corrosion resistance than copper.
GA173—2002
6.2.4 The fastening screws and nuts of the terminals used to connect protective conductors should be able to prevent sudden loosening. Composite sealing materials or resins can be used to prevent the terminals from loosening during operation.
6.3 Environmental requirements
6.3.1 The lightning arrester should work reliably under the following environmental conditions: Working temperature: -5℃~+40℃;
Relative humidity: less than 90% (temperature +25℃); air pressure : Not less than 70kPa (equivalent to an altitude of 3000m or less). 6.3.2 Lightning arresters used directly in outdoor exposed environments should have sun protection and rain protection functions. 6.3.3 After the salt spray test, the color of the metal parts of the lightning arrester should not be significantly darkened or the coating should not have uniform and continuous mild film corrosion. The corrosion area of ​​the coating should be less than 3%, and the main metal should be free of corrosion. 6.3.4 The plastic parts of the window arrester should have heat resistance and should not deform at high temperatures. 6.4 Safety requirements
6.4.1 The design of the lightning arrester should prevent personnel from directly contacting the conductive metal parts of the arrester to ensure personal safety. 6.4.2 The shell of the power lightning arrester should be non-combustible or flame-retardant material. It should not ignite when a test flame lasting 1min is applied.
6.5 Appearance requirements
The surface of the metal parts of the lightning arrester should be smooth and should not have surface defects. The coating appearance must be smooth and delicate, without spots, protrusions and unplated areas. The surface of plastic parts should be flat and shiny, without defects such as cracks, swelling, looseness, bubbles, etc. The terminals, nuts, plugs, and jacks should be in good condition.
7 Electrical performance test method
7.1 Test requirements
7.1.1 The electrical performance test of the lightning protection device should be carried out under standard atmospheric conditions. 7.1.2 During the test, the lightning protection device should be fixed and electrically connected according to the installation procedure of the product. External cooling and heating should not be performed. Use the connecting cable specified by the manufacturer to electrically connect the tested device. The entire length of these connecting wires or cables is part of the tested device.
Repair and disassembly of the tested device is not allowed during the test. All external switches, circuit breakers, fuses, short-circuit devices and similar devices of the power supply lightning protection device should be arranged according to the normal operating conditions specified by the product. 7.1.3 The simulation test waveform should meet the following requirements: 8/20μs impulse current wave must comply with the provisions of GB/T16927.1-1997. The tolerance of the waveform is: a)
Peak value ±10%
——Wave head time ±20%
Half peak time ±20%
Small overshoot and oscillation can be tolerated, but the peak value of any oscillation shall not be greater than 5% of the waveform peak value. After the current returns to zero, any polarity reversal shall not be greater than 20% of the waveform peak value.
When measuring the limiting voltage, overshoot and oscillation are allowed on the peak value of the impulse wave. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for ease of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the limiting voltage value on the lightning protection device terminal, the measurement accuracy is ±3%, and the bandwidth of the measuring equipment is at least 100MHz. b) 10/700μs impulse wave must comply with the provisions of GB/T3483-1983. The tolerance of the waveform is: - Peak ± 3%
- Wave head time ± 30%
Half peak time ± 20%
Overshoot and oscillation are allowed on the peak value of the shock wave measured by the oscilloscope at the test end, but any oscillation and overshoot are less than 6
GA173-2002
3% of the waveform peak value. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for the convenience of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the voltage value on the terminal of the lightning protection device, the measurement accuracy is ± 3%. The bandwidth of the measuring equipment is at least 10MHz. The short-circuit current of the test generator shall not be greater than 20% of the nominal discharge current of the equipment under test c) The slope wave with a rise rate of 1kV/μs, the waveform tolerance is: Peak ± 3% The waveform should be between the shaded lines in Figure 1.
Nominal rate of rise
TTTTTTTTTTT
00.9TIT11.1TI
0.9T2T21.1T2
Figure 11kv/us rate angle wave deviation diagram
When measuring the voltage value on the lightning protection device terminal, the measurement accuracy is ±3%. The bandwidth of the measuring equipment is at least 100MHz. 7.2 Electrical test procedure
7.2.1 The power supply lightning protection device is carried out in the following order: a) Parallel type power supply lightning protection device: nominal conduction voltage U.1-leakage current I-impact discharge voltage Uip-limiting voltage U,-nominal discharge current I-nominal conduction voltage U.1-leakage current 1n. b) Series power lightning protection device: nominal conduction voltage U.1-voltage regulation rate △U% (DC power lightning protection device is exempt from measurement) impulse discharge voltage U-limiting voltage U-nominal discharge current I.1-nominal conduction voltage U.7.2.2 The lightning protection device is tested in the following order: insertion loss a.-standing wave ratio (only applicable to antenna feeder coaxial lightning protection device)-nominal conduction voltage U.1-impulse discharge voltage Um limiting voltage U,-nominal discharge current I.1-nominal conduction voltage U. 7.3 Test method
7.3.1 The nominal conduction voltage U of the power supply lightning protection device shall be tested as follows: the instrument accuracy shall not be less than level 2.5. Before the test, the tested lightning protection device shall be placed under standard atmospheric conditions for at least 24 hours. Under the specified 1mA measurement current condition, the positive and negative directions of each line terminal and the grounding electrode of the lightning protection device shall be measured twice in each direction, with a time interval of 15 minutes each time. The measurement time shall not exceed 5s, and shall comply with the provisions of 6.1.2. The nominal conduction voltage U of the parallel power supply lightning protection device. See Figure 2 for the test circuit diagram. The nominal conduction voltage U of the Shenlian power supply lightning protection device and the channel lightning protection device. See Figure 3 for the test circuit diagram.7.3.2 The leakage current of the power supply lightning protection device 1. Test as follows: The leakage current of the parallel power supply lightning protection device 1, the test circuit is shown in Figure 2. After measuring the nominal conduction voltage U. Then, apply 0.75U. value between each line terminal and the grounding electrode of the lightning protection device, and measure the current flowing between the line terminal and the grounding electrode. The instrument accuracy is the same as the requirements of 7.3.1. The test results should meet the requirements of 6.1.2.
Voltage U
(Test voltage
waveform kV
≤600V
Impact discharge voltage
Um (Test voltage
waveform 1kV/μs)
≤1500V
≤1800V
≤1000V
Insertion loss a. (Tested within the maximum data transmission rate or frequency)
Voltage regulation
Standing wave ratio
6.1.3 The power supply lightning protection device can be equipped with a circuit breaker (either externally or internally). The power supply protection device equipped with a circuit breaker should have an indication of its operation. When the circuit breaker is activated or the power supply lightning protection device fails, it should There is a light alarm. If the product design integrates the protector and the external circuit breaker as a whole, the power supply lightning protector and the circuit breaker should be tested together during the type test and acceptance test, and ensure that the circuit breaker does not operate during the test. 6.1.4 The power supply lightning protector that uses a varistor alone should have a failure display function. 6.1.5 The insulating medium of the power supply lightning protector should have a certain insulation breakdown strength. There should be sufficient anti-creep arc distance between the surfaces of the two components with potential difference.
6.2 Mechanical requirements
The lightning protector should provide an installation method to ensure mechanical stability. 6.2.1
6.2.2 Terminals, plugs and jacks should be fixed to the lightning protector, and plugs and jacks should comply with national and international standards Requirements. The terminals should have sufficient mechanical strength. Electrical or mechanical connections should have a certain mechanical strength during normal use. 6.2.3 Current-bearing parts and connections, including parts used as protective conductors, should be copper or other metals or coated metals with better corrosion resistance than copper.
GA173—2002
6.2.4 The fastening screws and nuts of the terminals used to connect protective conductors should be able to prevent sudden loosening. Composite sealing materials or resins can be used to prevent the terminals from loosening during operation.
6.3 Environmental requirements
6.3.1 The lightning arrester should work reliably under the following environmental conditions: Working temperature: -5℃~+40℃;
Relative humidity: less than 90% (temperature +25℃); air pressure : Not less than 70kPa (equivalent to an altitude of 3000m or less). 6.3.2 Lightning arresters used directly in outdoor exposed environments should have sun protection and rain protection functions. 6.3.3 After the salt spray test, the color of the metal parts of the lightning arrester should not be significantly darkened or the coating should not have uniform and continuous mild film corrosion. The corrosion area of ​​the coating should be less than 3%, and the main metal should be free of corrosion. 6.3.4 The plastic parts of the window arrester should have heat resistance and should not deform at high temperatures. 6.4 Safety requirements
6.4.1 The design of the lightning arrester should prevent personnel from directly contacting the conductive metal parts of the arrester to ensure personal safety. 6.4.2 The shell of the power lightning arrester should be non-combustible or flame-retardant material. It should not ignite when a test flame lasting 1min is applied.
6.5 Appearance requirements
The surface of the metal parts of the lightning arrester should be smooth and should not have surface defects. The coating appearance must be smooth and delicate, without spots, protrusions and unplated areas. The surface of plastic parts should be flat and shiny, without defects such as cracks, swelling, looseness, bubbles, etc. The terminals, nuts, plugs, and jacks should be in good condition.
7 Electrical performance test method
7.1 Test requirements
7.1.1 The electrical performance test of the lightning protection device should be carried out under standard atmospheric conditions. 7.1.2 During the test, the lightning protection device should be fixed and electrically connected according to the installation procedure of the product. External cooling and heating should not be performed. Use the connecting cable specified by the manufacturer to electrically connect the tested device. The entire length of these connecting wires or cables is part of the tested device.
Repair and disassembly of the tested device is not allowed during the test. All external switches, circuit breakers, fuses, short-circuit devices and similar devices of the power supply lightning protection device should be arranged according to the normal operating conditions specified by the product. 7.1.3 The simulation test waveform should meet the following requirements: 8/20μs impulse current wave must comply with the provisions of GB/T16927.1-1997. The tolerance of the waveform is: a)
Peak value ±10%
——Wave head time ±20%
Half peak time ±20%
Small overshoot and oscillation can be tolerated, but the peak value of any oscillation shall not be greater than 5% of the waveform peak value. After the current returns to zero, any polarity reversal shall not be greater than 20% of the waveform peak value.
When measuring the limiting voltage, overshoot and oscillation are allowed on the peak value of the impulse wave. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for ease of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the limiting voltage value on the lightning protection device terminal, the measurement accuracy is ±3%, and the bandwidth of the measuring equipment is at least 100MHz. b) 10/700μs impulse wave must comply with the provisions of GB/T3483-1983. The tolerance of the waveform is: - Peak ± 3%
- Wave head time ± 30%
Half peak time ± 20%
Overshoot and oscillation are allowed on the peak value of the shock wave measured by the oscilloscope at the test end, but any oscillation and overshoot are less than 6
GA173-2002
3% of the waveform peak value. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for the convenience of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the voltage value on the terminal of the lightning protection device, the measurement accuracy is ± 3%. The bandwidth of the measuring equipment is at least 10MHz. The short-circuit current of the test generator shall not be greater than 20% of the nominal discharge current of the equipment under test c) The slope wave with a rise rate of 1kV/μs, the waveform tolerance is: Peak ± 3% The waveform should be between the shaded lines in Figure 1.
Nominal rate of rise
TTTTTTTTTTT
00.9TIT11.1TI
0.9T2T21.1T2
Figure 11kv/us rate angle wave deviation diagram
When measuring the voltage value on the lightning protection device terminal, the measurement accuracy is ±3%. The bandwidth of the measuring equipment is at least 100MHz. 7.2 Electrical test procedure
7.2.1 The power supply lightning protection device is carried out in the following order: a) Parallel type power supply lightning protection device: nominal conduction voltage U.1-leakage current I-impact discharge voltage Uip-limiting voltage U,-nominal discharge current I-nominal conduction voltage U.1-leakage current 1n. b) Series power lightning protection device: nominal conduction voltage U.1-voltage regulation rate △U% (DC power lightning protection device is exempt from measurement) impulse discharge voltage U-limiting voltage U-nominal discharge current I.1-nominal conduction voltage U.7.2.2 The lightning protection device is tested in the following order: insertion loss a.-standing wave ratio (only applicable to antenna feeder coaxial lightning protection device)-nominal conduction voltage U.1-impulse discharge voltage Um limiting voltage U,-nominal discharge current I.1-nominal conduction voltage U. 7.3 Test method
7.3.1 The nominal conduction voltage U of the power supply lightning protection device shall be tested as follows: the instrument accuracy shall not be less than level 2.5. Before the test, the tested lightning protection device shall be placed under standard atmospheric conditions for at least 24 hours. Under the specified 1mA measurement current condition, the positive and negative directions of each line terminal and the grounding electrode of the lightning protection device shall be measured twice in each direction, with a time interval of 15 minutes each time. The measurement time shall not exceed 5s, and shall comply with the provisions of 6.1.2. The nominal conduction voltage U of the parallel power supply lightning protection device. See Figure 2 for the test circuit diagram. The nominal conduction voltage U of the Shenlian power supply lightning protection device and the channel lightning protection device. See Figure 3 for the test circuit diagram.7.3.2 The leakage current of the power supply lightning protection device 1. Test as follows: The leakage current of the parallel power supply lightning protection device 1, the test circuit is shown in Figure 2. After measuring the nominal conduction voltage U. Then, apply 0.75U. value between each line terminal and the grounding electrode of the lightning protection device, and measure the current flowing between the line terminal and the grounding electrode. The instrument accuracy is the same as the requirements of 7.3.1. The test results should meet the requirements of 6.1.2.3 The power supply lightning protection device can be equipped with a circuit breaker (either externally or internally). The operation of the power supply lightning protection device equipped with a circuit breaker should be indicated. When the circuit breaker is activated or the power supply lightning protection device fails, there should be a light alarm. If the product design integrates the protector and the external circuit breaker into a whole, the power supply lightning protection device and the circuit breaker should be tested together during the type test and acceptance test, and it should be ensured that the circuit breaker shall not operate during the test. 6.1.4 The power supply lightning protection device that uses a varistor alone should have a failure display function. 6.1.5 The insulating medium of the power supply lightning protection device should have a certain insulation breakdown strength. There should be enough anti-climbing arc distance between the surfaces of the two components with potential difference.
6.2 Mechanical requirements
The lightning protection device should provide an installation method to ensure mechanical stability. 6.2.1
6.2.2 Terminals, plugs and sockets should be fixed to the lightning protection device, and plugs and sockets should comply with the requirements of Chinese and international standards. The terminals shall have sufficient mechanical strength. Electrical or mechanical connections shall have a certain mechanical strength in normal use. 6.2.3 Current-bearing parts and connections, including parts used as protective conductors, shall be made of copper or other metals or coated metals with better corrosion resistance than copper.
GA173—2002
6.2.4 The fastening screws and nuts of the terminals used to connect the protective conductors shall be able to prevent sudden loosening. Composite sealing materials or resins may be used to prevent the terminals from loosening during operation.
6.3 Environmental requirements
6.3.1 The lightning arrester shall work reliably under the following environmental conditions: Working temperature: -5℃~+40℃;
Relative humidity: less than 90% (temperature +25℃); Air pressure: not less than 70kPa (equivalent to an altitude of less than 3000m). 6.3.2 Lightning arresters directly used in outdoor exposed environments shall have sun and rain protection functions. 6.3.3 After the salt spray test, the color of the metal parts of the lightning protection device should not be obviously darkened or the coating should not have uniform and continuous mild film corrosion. The corrosion area of ​​the coating should be less than 3%, and the main metal should be free of corrosion. 6.3.4 The plastic parts of the window protection device should have heat resistance and should not be deformed at high temperatures. 6.4 Safety requirements
6.4.1 The design of the lightning protection device should prevent personnel from directly contacting the conductive metal parts of the device to ensure personal safety. 6.4.2 The shell of the power lightning protection device should be non-combustible or flame-retardant material. It should not ignite when the test flame is applied for a duration of 1min.
6.5 Appearance requirements
The surface of the metal parts of the lightning protection device should be smooth and should not have surface defects. The coating appearance must be smooth and delicate, without spots, protrusions and unplated areas. The surface of plastic parts should be flat and shiny, without defects such as cracks, swelling, looseness, bubbles, etc. Terminals, nuts, plugs, and jacks should be in good condition.
7 Electrical performance test method
7.1 Test requirements
7.1.1 The electrical performance test of the lightning protection device shall be carried out under standard atmospheric conditions. 7.1.2 During the test, the lightning protection device shall be fixed and electrically connected according to the product installation procedure. External cooling and heating shall not be allowed. Use the connecting cable specified by the manufacturer to electrically connect the tested device. The entire length of these connecting wires or cables is part of the tested device.
Repair and disassembly of the tested device is not allowed during the test. All external switches, circuit breakers, fuses, short-circuit devices and similar devices of the power supply lightning protection device shall be arranged according to the normal operating conditions specified by the product. 7.1.3 The simulation test waveform shall meet the following requirements: 8/20μs impulse current wave must comply with the provisions of GB/T16927.1-1997. The tolerance of the waveform is: a)
Peak value ±10%
——Wave head time ±20%
Half peak time ±20%
Small overshoot and oscillation can be tolerated, but the peak value of any oscillation shall not be greater than 5% of the waveform peak value. After the current returns to zero, any polarity reversal shall not be greater than 20% of the waveform peak value.
When measuring the limiting voltage, overshoot and oscillation are allowed on the peak value of the impulse wave. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for ease of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the limiting voltage value on the lightning protection device terminal, the measurement accuracy is ±3%, and the bandwidth of the measuring equipment is at least 100MHz. b) 10/700μs impulse wave must comply with the provisions of GB/T3483-1983. The tolerance of the waveform is: - Peak ± 3%
- Wave head time ± 30%
Half peak time ± 20%
Overshoot and oscillation are allowed on the peak value of the shock wave measured by the oscilloscope at the test end, but any oscillation and overshoot are less than 6
GA173-2002
3% of the waveform peak value. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for the convenience of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the voltage value on the terminal of the lightning protection device, the measurement accuracy is ± 3%. The bandwidth of the measuring equipment is at least 10MHz. The short-circuit current of the test generator shall not be greater than 20% of the nominal discharge current of the equipment under test c) The slope wave with a rise rate of 1kV/μs, the waveform tolerance is: Peak ± 3% The waveform should be between the shaded lines in Figure 1.
Nominal rate of rise
TTTTTTTTTTT
00.9TIT11.1TI
0.9T2T21.1T2
Figure 11kv/us rate angle wave deviation diagram
When measuring the voltage value on the lightning protection device terminal, the measurement accuracy is ±3%. The bandwidth of the measuring equipment is at least 100MHz. 7.2 Electrical test procedure
7.2.1 The power supply lightning protection device is carried out in the following order: a) Parallel type power supply lightning protection device: nominal conduction voltage U.1-leakage current I-impact discharge voltage Uip-limiting voltage U,-nominal discharge current I-nominal conduction voltage U.1-leakage current 1n. b) Series power lightning protection device: nominal conduction voltage U.1-voltage regulation rate △U% (DC power lightning protection device is exempt from measurement) impulse discharge voltage U-limiting voltage U-nominal discharge current I.1-nominal conduction voltage U.7.2.2 The lightning protection device is tested in the following order: insertion loss a.-standing wave ratio (only applicable to antenna feeder coaxial lightning protection device)-nominal conduction voltage U.1-impulse discharge voltage Um limiting voltage U,-nominal discharge current I.1-nominal conduction voltage U. 7.3 Test method
7.3.1 The nominal conduction voltage U of the power supply lightning protection device shall be tested as follows: the instrument accuracy shall not be less than level 2.5. Before the test, the tested lightning protection device shall be placed under standard atmospheric conditions for at least 24 hours. Under the specified 1mA measurement current condition, the positive and negative directions of each line terminal and the grounding electrode of the lightning protection device shall be measured twice in each direction, with a time interval of 15 minutes each time. The measurement time shall not exceed 5s, and shall comply with the provisions of 6.1.2. The nominal conduction voltage U of the parallel power supply lightning protection device. See Figure 2 for the test circuit diagram. The nominal conduction voltage U of the Shenlian power supply lightning protection device and the channel lightning protection device. See Figure 3 for the test circuit diagram.7.3.2 The leakage current of the power supply lightning protection device 1. Test as follows: The leakage current of the parallel power supply lightning protection device 1, the test circuit is shown in Figure 2. After measuring the nominal conduction voltage U. Then, apply 0.75U. value between each line terminal and the grounding electrode of the lightning protection device, and measure the current flowing between the line terminal and the grounding electrode. The instrument accuracy is the same as the requirements of 7.3.1. The test results should meet the requirements of 6.1.2.3 The power supply lightning protection device can be equipped with a circuit breaker (either externally or internally). The operation of the power supply lightning protection device equipped with a circuit breaker should be indicated. When the circuit breaker is activated or the power supply lightning protection device fails, there should be a light alarm. If the product design integrates the protector and the external circuit breaker into a whole, the power supply lightning protection device and the circuit breaker should be tested together during the type test and acceptance test, and it should be ensured that the circuit breaker shall not operate during the test. 6.1.4 The power supply lightning protection device that uses a varistor alone should have a failure display function. 6.1.5 The insulating medium of the power supply lightning protection device should have a certain insulation breakdown strength. There should be enough anti-climbing arc distance between the surfaces of the two components with potential difference.
6.2 Mechanical requirements
The lightning protection device should provide an installation method to ensure mechanical stability. 6.2.1
6.2.2 Terminals, plugs and sockets should be fixed to the lightning protection device, and plugs and sockets should comply with the requirements of Chinese and international standards. The terminals shall have sufficient mechanical strength. Electrical or mechanical connections shall have a certain mechanical strength in normal use. 6.2.3 Current-bearing parts and connections, including parts used as protective conductors, shall be made of copper or other metals or coated metals with better corrosion resistance than copper.
GA173—2002
6.2.4 The fastening screws and nuts of the terminals used to connect the protective conductors shall be able to prevent sudden loosening. Composite sealing materials or resins may be used to prevent the terminals from loosening during operation.
6.3 Environmental requirements
6.3.1 The lightning arrester shall work reliably under the following environmental conditions: Working temperature: -5℃~+40℃;
Relative humidity: less than 90% (temperature +25℃); Air pressure: not less than 70kPa (equivalent to an altitude of less than 3000m). 6.3.2 Lightning arresters directly used in outdoor exposed environments shall have sun and rain protection functions. 6.3.3 After the salt spray test, the color of the metal parts of the lightning protection device should not be obviously darkened or the coating should not have uniform and continuous mild film corrosion. The corrosion area of ​​the coating should be less than 3%, and the main metal should be free of corrosion. 6.3.4 The plastic parts of the window protection device should have heat resistance and should not be deformed at high temperatures. 6.4 Safety requirements
6.4.1 The design of the lightning protection device should prevent personnel from directly contacting the conductive metal parts of the device to ensure personal safety. 6.4.2 The shell of the power lightning protection device should be non-combustible or flame-retardant material. It should not ignite when the test flame is applied for a duration of 1min.
6.5 Appearance requirements
The surface of the metal parts of the lightning protection device should be smooth and should not have surface defects. The coating appearance must be smooth and delicate, without spots, protrusions and unplated areas. The surface of plastic parts should be flat and shiny, without defects such as cracks, swelling, looseness, bubbles, etc. Terminals, nuts, plugs, and jacks should be in good condition.
7 Electrical performance test method
7.1 Test requirements
7.1.1 The electrical performance test of the lightning protection device shall be carried out under standard atmospheric conditions. 7.1.2 During the test, the lightning protection device shall be fixed and electrically connected according to the product installation procedure. External cooling and heating shall not be allowed. Use the connecting cable specified by the manufacturer to electrically connect the tested device. The entire length of these connecting wires or cables is part of the tested device.
Repair and disassembly of the tested device is not allowed during the test. All external switches, circuit breakers, fuses, short-circuit devices and similar devices of the power supply lightning protection device shall be arranged according to the normal operating conditions specified by the product. 7.1.3 The simulation test waveform shall meet the following requirements: 8/20μs impulse current wave must comply with the provisions of GB/T16927.1-1997. The tolerance of the waveform is: a)
Peak value ±10%
——Wave head time ±20%
Half peak time ±20%
Small overshoot and oscillation can be tolerated, but the peak value of any oscillation shall not be greater than 5% of the waveform peak value. After the current returns to zero, any polarity reversal shall not be greater than 20% of the waveform peak value.
When measuring the limiting voltage, overshoot and oscillation are allowed on the peak value of the impulse wave. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for ease of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the limiting voltage value on the lightning protection device terminal, the measurement accuracy is ±3%, and the bandwidth of the measuring equipment is at least 100MHz. b) 10/700μs impulse wave must comply with the provisions of GB/T3483-1983. The tolerance of the waveform is: - Peak ± 3%
- Wave head time ± 30%
Half peak time ± 20%
Overshoot and oscillation are allowed on the peak value of the shock wave measured by the oscilloscope at the test end, but any oscillation and overshoot are less than 6
GA173-2002
3% of the waveform peak value. If the oscillation frequency is greater than 500kHz or the overshoot duration is less than 1μs, an average curve should be drawn, and for the convenience of measurement, the maximum amplitude of the curve is defined as the voltage peak value of the test. When measuring the voltage value on the terminal of the lightning protection device, the measurement accuracy is ± 3%. The bandwidth of the measuring equipment is at least 10MHz. The short-circuit current of the test generator shall not be greater than 20% of the nominal discharge current of the equipment under test c) The slope wave with a rise rate of 1kV/μs, the waveform tolerance is: Peak ± 3% The waveform should be between the shaded lines in Figure 1.
Nominal rate of rise
TTTTTTTTTTT
00.9TIT11.1TI
0.9T2T21.1T2
Figure 11kv/us rate angle wave deviation diagram
When measuring the voltage value on the lightning protection device terminal, the measurement accuracy is ±3%. The bandwidth of the measuring equipment is at least 100MHz. 7.2 Electrical test procedure
7.2.1 The power supply lightning protection device is carried out in the following order: a) Parallel type power supply lightning protection device: nominal conduction voltage U.1-leakage current I-impact discharge voltage Uip-limiting voltage U,-nominal discharge current I-nominal conduction voltage U.1-leakage current 1n. b) Series power lightning protection device: nominal conduction voltage U.1-voltage regulation rate △U% (DC power lightning protection device is exempt from measurement) impulse discharge voltage U-limiting voltage U-nominal discharge current I.1-nominal conduction voltage U.7.2.2 The lightning protection device is tested in the following order: insertion loss a.-standing wave ratio (only applicable to antenna feeder coaxial lightning protection device)-nominal conduction voltage U.1-impulse discharge voltage Um limiting voltage U,-nominal discharge current I.1-nominal conduction voltage U. 7.3 Test method
7.3.1 The nominal conduction voltage U of the power supply lightning protection device shall be tested as follows: the instrument accuracy shall not be less than level 2.5. Before the test, the tested li
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