GB 18802.1-2002 Surge protective devices (SPD) for low voltage power distribution systems Part 1: Performance requirements and test methods
Some standard content:
ICS 29. 240. 10
National Standard of the People's Republic of China
CB18802. 1—2002/IEC 61643-1: 1998 Surge protective devices connected to low-voltage power distribution systems-
Part 1:Performance reguirements and testing methods(IEC 61643-1:1998, IDT)
2002-08-05 Issued
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2003-04-01 Implementationwww.bzxz.net
GB18802.1--2002/IEC61643-1:1998GB18802 "Surge Protective Device (SPD) for Low Voltage Distribution System" The structure name is expected to be as follows: Low Voltage Distribution System Surge protective devices (SPD) Part 1: Performance requirements and test methods Surge protective devices (SPD) for low voltage distribution systems Part 12: Selection and use principles This part is equivalent to IEC61643-1:1998 "Surge protective devices connected to low voltage distribution systems Part 1: Performance requirements and test methods" (English version), including its amendment IEC61643-1-Amd]: 2001, and has been corrected according to the "Corrections" published by [EC in 1998. In the preparation format 1: According to GB/T 1. 1-2000. By equating to the international standard, the standards of surge protective devices in my country are consistent with international standards to meet the needs of international trade and technical and economic exchanges.
Appendix A of this part is an informative appendix, and Appendix B is a normative appendix. This part was proposed by the China Electrical Equipment Industry Association. This part was approved by the National Technical Committee for Standardization of Lightning Arrester. The responsible drafting units of this part are: Shanghai Electric Science Research Institute and Xi'an Electric Ceramics Research Institute. The drafting organizations of this part are Schneider Electric, Xiamen Yude Electric Co., Ltd., Shunquan Electric Co., Ltd., Shanghai Tianyi Electric Co., Ltd., Zhejiang Delixi Electric Co., Ltd., Shanghai Jingda Power Voltage Stabilizer Manufacturing Co., Ltd. and Nanjing Dongfeng Electric Equipment Supporting Factory. The main drafters of this part are Wu Shengming, Xia Xinxia and Zhou Jigang. 813 GB 18802. 12002/IEC 61643-1:1998 Introduction This part specifies the basic requirements and test methods for surge protective devices, and proposes several performance tests for surge protective devices (SPDs). There are three levels of tests. The level 1 test is used to simulate the situation of partial lightning current impulse. SPDs that meet the level I test method are generally recommended for high exposure locations, such as: cable entry of buildings protected by electrical protection systems. SPDs tested by level I or sub-level test methods are subjected to shorter-term impulses. These SPDs are generally recommended for less exposed locations. All SPD tests should be based on the basic model. The test includes the evaluation technology used by the manufacturer to use the most appropriate test method.
1 General
1.1 Scope
GB 18802.1-2002/IEC 61643-1:1998 Surge protective devices (SPD) for low-voltage power distribution systems Part 1: Performance requirements and test methods
This part of GB18802 applies to electrical appliances that protect against surges caused by direct lightning or other transient overvoltages. These appliances are assembled and connected to circuits and equipment with an AC rated voltage not exceeding 1000V (effective value), 50/60Hz or a DC voltage not exceeding 1500V. This part specifies the performance characteristics, standard test methods and rated values of these appliances, which at least contain non-linear elements used to limit surge voltages and discharge surge currents. 1.2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of GB 18802. For all referenced documents with dates, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. For all referenced documents without dates, the latest versions are applicable to this part. GB2099.11996 Plugs and sockets for household and similar purposes Part 1: General requirements (eqvIEC60884-1:1994) GB/T42071984 Determination of comparative tracking index and proof tracking index of solid insulating materials under humid conditions (eqvIEC60112:1979)
GB4208-1993 External protection grade (IP code) (egYIEC60529:1989) G5013-1997 (all) Rubber insulated cables with rated voltage of 450/750V and below (idtIEC60245) GB5023-1997 (all) Ethylene insulated cables with rated voltage of 150/750V and below (idtIEC60227) GB/T5169.10-1997 Test method for fire hazard of electric products Glow-wire test method General (idt IEC 60695-2-1/0:1994)
GB109631999 Overcurrent protection circuit breakers for household and similar places (idtIEC60898:1995) GB/T 14048. 1-2000
General rules for low-voltage switchgear and controlgear (cnVIEC609471:1999) GB14048.5-~1993 Low-voltage switchgear and controlgear control circuit devices and switch elements Part 1: Electromechanical control circuit devices (egvIEC 60947-5-1:1990) GB/T 16927.1-1997 High voltage test technology Part - Part - General test requirements (cgVIFC 60050 1:1989) G3/T 16935.1-1997
(idt IEC IEC 60664-1:1992)
Insulation coordination of equipment in low-voltage systems Part 1: Principles, requirements and tests GB/T 17627.1—1998 High voltage test technology for low-voltage electrical equipment Part -: Definitions and test requirements (eqv IEC 61180-1:1992)
IEC60364-4-442:1993 Electrical installations of buildings Part 4: Safety protection Chapter 44: Protection against overvoltage Section 442: Protection of low-voltage installations against faults between the high-voltage system and the ground IEC60361-5-534:1997 Electrical installations of buildings Part 5: Selection of electrical equipment Section 534: Overvoltage protective devices
1EC60999 (all) Safety requirements for screws and screwless clamps for electrical connection of connecting equipment to copper conductors TFC61643-12 Surge protective devices connected to low-voltage distribution systems Part 12: Principles of selection and use 1) To be published,
GB 18802. 1 : 2002/1EC 61643-1:19982 Conditions of use
2. 1 Normal use conditions
2.1.1 Frequency: The AC frequency of the power supply is between 48Hz and 62Hz. 2.1.2 Voltage: The voltage continuously applied between the terminals of the SPD shall not exceed its maximum continuous working voltage. 2.1.3 Altitude: The altitude shall not exceed 2000m. 2.1.4: Use and storage temperature:
Normal range: 5C~+40℃;
Extreme range: -40℃～-70℃.
2.1.5 Viscosity - Relative condensation: It should be between 30% and 90% at room temperature. 2.2 Abnormal use conditions
For SPDs placed under abnormal use conditions, special considerations may be made in the design and use, and should be paid attention to by the manufacturer. For external SPDs placed under sunlight or other rays, additional technical requirements may be necessary. 3 Definitions
The following definitions apply to this standard.
Surge Protective Device (SPD) Surge Protective Device is an electrical device used to limit instantaneous overvoltage and discharge surge current. It contains at least one nonlinear component. 3. 2
One-port SPn) one-port SPV
SPD is connected in parallel with the protected circuit. One port can separate the input and output terminals, and there is no special series impedance between these terminals. 3.3
Two-port SPD two-port SPD
An SPD with two sets of input and output terminals. There is a special series impedance between these terminals. 3.4
Voltage switching type SPDvoltage switching type SPD has high impedance when there is no hysteresis, and can immediately turn into a low-resistance SPD when there is a surge voltage. Commonly used components of voltage switching type SPD are discharge gaps, gas discharge tubes, thyristors (silicon controlled rectifiers) and triacs. This type of SPD is sometimes also called "short type SPD\.
Voltage limiting type SPD voltage limiting type SPD has high impedance when there is no surge, but as the surge current and voltage increase, its impedance will continue to decrease. Commonly used non-linear components are: varistors and suppression diodes. This type of SPL) is sometimes also called "lead type SPD\. 3.6
Combined SPDcomhinationSPD
SPD composed of voltage switching type components and voltage limiting type components. Its characteristics can be voltage switching type, voltage limiting type or both according to the characteristics of the applied voltage.
Protection modesmodes of protection
SPD protection components can be connected to phase to phase, phase to ground, to neutral line, neutral line to ground and their combination. These connection methods are called protection modes.
Nominal discharge currentnominal discharge currentY.
GB18802.12002/IEC61643-1:1998The current peak value with 8/20 waveform flowing through the SPD is used for SPD classification of level I test and pre-treatment test of SPD of level 1 and level I test.
Impulse currentimpulse current
It is determined by the current peak value Ic and the charge amount Q. Its test should be carried out according to the procedure of the action load test. This is the SPD classification test for class I tests.
The maximum discharge current for class I tests flows through the SPD and has a peak value of 8/20 waveform current. Its value is determined according to the procedure of the class action load. 1 is greater than 1.3. 11
Maximum continuous operating voltagemaximum continuous operating voltageU
The maximum AC voltage effective value or DC voltage that can be applied to the SPD permanently. Its value is equal to the rated voltage.3.12
Standby power consumptionstandbypowerconsumptionP
The power consumed when the SPD is connected according to the manufacturer's instructions, the maximum continuous operating voltage (U.) with balanced voltage and balanced phase angle is applied and there is no load.
Follow current
The current flowing into the SPD from the power system after the impulse discharge current. There is a clear difference between the follow current and the continuous operating current I.3.14
rated load current
Rated load current
The maximum continuous rated AC current or DC current that can be provided to the load connected to the output end of the SPD protection. 3.15
Voltage protection level
voltageprntection level
Performance parameter that characterizes the voltage between the SPD limiting terminals, and its value can be selected from a list of preferred values. This value should be greater than the highest value of the limiting voltage.
Limiting voltage
measured limiting voltage
The maximum peak voltage measured between the SPD terminals when an impulse voltage of specified waveform and amplitude is applied. 3. 17
residual voltage
The peak voltage between its terminals when a discharge current flows through the SPD. 817
CB 18802. 1 -2002/IEC 61643-1:19983.18
temporary overvoltage (ToV) characteristictemporaryovervollage(Tov)characteristicSPL)The working condition when it withstands a transient overvoltage UI for a specified duration t. Note: This characteristic is either the ability to withstand a transient overvoltage without causing unacceptable changes in characteristics or functions, or causing the faults described in 7.7.G,2.3.19
load-side surge withstand capabilityfor atwo-portSPDThe ability of a two-portSPD to withstand surges generated at the output terminals on the load side. 3.20
Voltage drop (expressed as a white fraction) (inpercent) voltage drop) A -- [(U auxiliary - U output) / UA] × 100% Where:
(1)
U is the input voltage, and output is the output voltage measured at the same time under the condition of connecting the rated resistive load. This parameter is only applicable to one-port SPD.
Insertion loss insertion loss
At a given frequency, the insertion loss of an SPD connected to a given power system is defined as: the ratio of the voltage before and after the SPD is connected to the power line immediately after the SPD access point, and the result is expressed in dB. Note: Its requirements and tests are under consideration. 3. 22
1.2/50 impulse voltage 1.2/50roltageimpulse The apparent wavefront time (the time from 10% of the peak value to 90% of the peak value) is 1.2, and the half-peak time is 50ms. 3. 23
8/20 impulse current8/20currentimpulseAn impulse current with an apparent wavefront time of 8us and a half-peak time of 20s. 3.24
combination wavecombinationwave
The composite wave is generated by an impulse generator. A 1.2/50 impulse voltage is applied when the circuit is open, and an 8/20 impulse current is applied when the circuit is short. The voltage, current amplitude and waveform supplied to the SPD are determined by the impedance of the impulse generator and the SPD subjected to the impulse. The ratio of the open circuit voltage peak to the short circuit current peak is 2:2: This ratio is defined as the virtual impedance Z. The short circuit current is represented by the symbol 1. The open circuit voltage is represented by the symbol U. 3.25
Thermal runawaythermal runaway
When the power loss borne by the SPD exceeds the heat dissipation capacity of the casing and connectors, the temperature of the internal components gradually rises, eventually leading to its damage.
Thermal stabilitythermalslability
After the action load test that causes the temperature of the SPD to rise, under the specified ambient temperature conditions, the specified maximum continuous working voltage is applied to the SPD. If the temperature of the SPD can drop over time, the SPD is considered to be thermally stable. 3.27
Degradation
The change in the original performance parameters of the SPD due to surges, use or adverse environmental influences. 3.28
Short-circuitwithstand818
The maximum expected short-circuit current value that the SPD can withstand. 3.29
SPD disconnector GB18802.1—2002/IEC61643-1:1998 Devices (internal and/or external) required to disconnect an SPI from the power supply system. Note: This disconnect device does not need to have isolation capability, it prevents the system from being continuously tripped and can be used to give an indication of a 5PD fault. In addition to the disconnector function, it may also have other functions, such as overcurrent protection and thermal protection. These functions may be combined in one or more devices.
Degrees of protection provided by enclosure (IP code) The degree of protection provided by the enclosure to prevent access to dangerous parts, to prevent the entry of solid foreign objects from the outside and/or to prevent the entry of water into the shell (see GB/T 4208).
Type tests
Tests performed when a new SPI design is developed, usually to determine typical performance and to prove that it complies with relevant standards. After the test is completed, it is generally not necessary to repeat the retrograde test, but when the design changes so as to affect its performance, only the relevant test needs to be repeated.
routine tests
Tests performed on each SPD or its components and materials as required to ensure that the product meets the design specifications 3.33
acceptance tests
Tests performed on the ordered SPD or its typical samples as agreed upon by the supplier and the buyer. 3. 34
decoupling network
Device used to prevent surge energy from feeding back to the power grid during the SPD power-on test. Sometimes called reverse filter". 3.35 Classification of impulse tests
Class I testclass I test
A test conducted with the nominal discharge current 1 defined in 3.8, the impulse voltage 1.2/50 defined in 3.22 and the maximum impulse current I ie:p of the class 1 test defined in 3.9.
Class I testclass 1 lest
A test conducted with the nominal discharge current 1 defined in 3.8, the impulse voltage 1.2/50 defined in 3.22 and the maximum discharge current I u of the class 1 test defined in 3.10.
Class I testclassItest
A test conducted with the composite wave (1.2/5 gate, 8/20) defined in 3.24, 3. 36
overcurrentprotection
Overcurrent protection
Overcurrent device (such as circuit breaker or breaker) located outside the front end of the SPD as part of the electrical installation. 3. 37
Residual current device (RCD) Residual current device (RCD) A mechanical switching device or combination of devices that can disconnect the contacts when the residual current or unbalanced current reaches a given value under specified conditions. 819
GB 18802. 1-.-2002/IEC 61643-1: 1998
The sparkover yoltage of a valtage switching SPD is the maximum medium voltage value between the electrodes of the SPD before the dust breakdown discharge. 3.39
Specific energy for class 1 test testW/R
Surge current 1. The energy consumed when flowing through 1 unit resistance, which is equal to the integral of the square of the current over time W/R3.40
prospective short-circuit current of 1 power supplyI
The current that may flow at a given position in the circuit if a conductor with negligible impedance is short-circuited. 3.41
following current interrupting ratingThe prospective short-circuit current that the SPD itself can disconnect. 3.42
residual current
The current flowing through the PE terminal when the SPD is connected according to the manufacturer's instructions, without load and the maximum continuous working voltage (U.) is applied. 3.43
status indicatorstatus indicator
Indicates the SPD =A device for indicating the working status of a device.
Note that these indicators may be visual and/or audible alarms of the body, and/or have remote signaling devices and/or output contact capabilities. 3.44
Output contacts
Contacts connected to the SPD disconnector or status indicator in a circuit separate from the main circuit: 3.45
temporary overvoltage (ToV) Failure behaviour Performance of an SPD connected between the phase/neutral terminal and the earth terminal under TOV conditions specified in TFC603644.442 (earth fault in the high voltage system affecting the low voltage system).
Proof: transient overvoltages may exceed the transient overvoltage withstand capability r of the SPD. 3.46
Nominal ac voltage of the systemU.
The nominal phase-to-neutral voltage of the system (rms value of ac voltage). 4 Classification
Manufacturing SPDs should be classified according to the following parameters. 4.1 Number of ports
4. 1. 1 Port
4. 1. 2 Two ports
4.2 Design types of SPDs
4.2. 1 Voltage switching type
4.2.2 Voltage limiting type
4.2.3 Composite type
4. 3 The test items required for the I, I and ear level tests, and II level tests of SPDs are shown in Table 1. Table
I, mutual and level I test
4.4 Place of use
4.4.1 Indoor
4.4.2 Outdoor
4. 5 Accessibility
4.5.1 Accessible
4.5.2 Inaccessible (not touchable)
Test items
Note: Inaccessible means that live parts will not be touched by workers or other equipment without using them. 4.6 Mounting
4.6.1 Fixed
4.6.2 Mobile
4.7 SPD disconnector
4.7.1 Location of disconnector
4.7.1.1 Internal
4.7.1.2 External
4.7.1.3 Both (partly internal and partly external)4.7.2 Protection function
4.7.2.1 Thermal Protection
4.7.2.2 Leakage current protection
4.7.2.3 Overcurrent protection
Note: the disconnector is required.
4.8 Overcurrent protection
4.8.1 Specified overcurrent protection
4.8.2 Unspecified overcurrent protection
4.9 Enclosure protection grade according to IP code of GB42084.10 Temperature range
4. 10.1 Normal temperature range
Limiting temperature range
5 Standard rated values
5.1 Preferred values of impulse current Im for level 1 test Peak value Tpuakt1.0.2, 5.10 and 20 kA Charge quantity Q: 0.5, 1, 2.5.5 and 10As
GB 18802.1—2002/IEC: 61643-1:1998 Test procedure (see subclauses)
GB 18802.1—2002/IEC 61643-1:19985.2 Nominal discharge current for level 1 test1. Preferred values 0.05, 0.1, 0.25, 0.5, 1.0.1.5, 2.0, 2.5, 3.0, 5.0, 10, 15 and 20 kA .5.3 Open circuit voltage U for level I test, preferred values are 0.10.2.0.5, 1, 2.3, 4, 5, 6, 10 and 20 kV. 5.4 Voltage protection level U, preferred values
0.08.0.09, 0.10, 0.12, 0.15, 0.22, 0.33, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1. 2. 1. 5, 1. 8, 2. 0.2, 5, 3. 0, 4. 0.5. 0.6. 0, 8. 0 and 10 kV. 5.5 The preferred values of the AC effective value or the DC maximum continuous working voltage D. are 52, 63.75, 95, 110, 130, 150, 175, 220, 230, 240, 250, 260, 275, 280, 320, 420, 440, 460, 510.530, 600, 630, 690, 800, 900, 1000 and 1500 V. 6 Technical requirements
6.1 General requirements
6.1.1 Labeling
The manufacturer shall provide at least the following information. The test is carried out in accordance with Chapter 7, a) manufacturer's name or trademark and model;
b) installation location category;
) number of ports:
d) installation method;
\) maximum continuous working voltage (each protection mode has a voltage value) and nominal rated frequency;) test category and discharge parameters for each protection mode specified by the manufacturer: Level I test Iima;
—Level test Iaa.
Level test E
g) Level 1 and! Nominal discharge current I of the level (each protection mode has a current value); h) Voltage protection level (the chain type protection membrane type has a voltage value); i) Rated load current (if necessary);
i) Enclosure protection level (when IP code>20): k) Short-circuit current withstand capability;
1) Recommended maximum rating of overcurrent protection (if applicable); m) Disconnection action indication (if any): n) Normal use position (if important);) Terminal marking (if necessary) t| |tt||P) Installation instructions (e.g. connections, mechanical dimensions, lead length, etc.)) Current type: AC frequency or DC, or both; 1) Specific energy W/R for Class I test (according to 7.1.1) s) Temperature range:
t) Rated disconnection follow-up value (except voltage-limited SPD): u) Technical requirements for external SPD disconnectors should be specified by the manufacturer: v) Residual current Ie (optional);
W) Transient overvoltage (TUV) characteristics,
6. 1.2 Marking
The markings a), e), f), h), j), 1), n) and g) in 6.1.1 must be located on the body of the SPD 1:, or permanently marked on the SPD body 822
GB18802.1-2002/IEC61643-1:19981. For some one-port SPD designs, the rated load current may not be required. The markings shall be indelible and easily identifiable and shall not be marked on screws and washers that cannot be disassembled. The test in 7.2 shall be used to check whether the markings meet the requirements.
Note: If space is limited, the manufacturer's name or trademark and model shall be marked on the appliance. Other markings may be marked on the small package. 6.2 Electrical performance requirements
6.2-1 Electrical connection
The wiring terminals shall be designed to connect the cables with the minimum and maximum cross-sections specified by the manufacturer. Each test must use the most severe configuration (such as the maximum or minimum cross-section for different tests (see Chapter 7): The SPD should have terminals that can be electrically connected by screws, nuts, plugs, sockets or equivalent methods. Check according to 7.3. 6.2.2 Voltage protection level U,
The limiting voltage of the SPD should not exceed the voltage protection level specified by the manufacturer. Check its compliance with the requirements through the test meter of 7.5.
6.2.3 Level I impulse current test
When the manufacturer declares that it meets the requirements of level 1 test, the SPD should be tested according to this requirement. Check its compliance with the requirements through the test of 7.6.5
6.2.4 Level 1 nominal discharge current test
When the manufacturer declares that it meets the requirements of level I test, the SPD should be tested according to this requirement. Check its compliance with the requirements through the test of 7. Compliance shall be checked by the test in 6.5.
6.2.5 Level complex wave test
When the manufacturer states that the requirements of level III tests are met, the SPD shall be tested in accordance with these requirements. Compliance shall be checked by the test in 7.6.7.
6.2.6 Operation load test
When the maximum continuous operation voltage U, is applied, the SPD shall be able to withstand the specified discharge current without unacceptable changes in its characteristics. Compliance shall be checked by the test in 7.6. 6.2.7 SPD disconnector
SPDs may be equipped with SPD disconnectors (which may be internal or external, or both), and their operation shall be indicated. Note: Installation requirements unrelated to the SPD may require additional and/or lower rated overcurrent protection devices. In the type test procedure, the SPD disconnector shall be tested together with the SPD, except for the RCD in 7.7.1 No test is performed during the action load test.
Compliance is checked by the tests of 7.7 and 7.8.3. 6.2.8 Clearance and creepage distance
The SPD shall have sufficient clearance and creepage distance. Test according to 7.9.5. 6.2.9 Tracking resistance
The insulating materials necessary to keep the current-carrying parts in their position shall be non-tracking materials, or they shall be of sufficient size. Test according to 7.9.6.
6.2.10 Dielectric strength
The enclosure of the SPD shall have sufficient dielectric strength to take into account insulation damage and to prevent direct contact. Test according to 7.9.8. 6.2.11 Short-circuit current withstand capability
The SPD shall be able to withstand the power supply short-circuit current until the SPD itself is disconnected, or an internal or external overcurrent disconnector or overcurrent protection interrupts the short-circuit current. Test 6.2.12 Status Indicator Action in accordance with 7.7.3
General Requirements
During the entire type test, the status displayed by the indicator shall clearly indicate the status of the part connected to the indicator.2 test to check whether it meets the requirements.
Note: If space is limited, the manufacturer's name or trademark and model should be marked on the appliance. Other marks can be marked on the small package. 6.2 Electrical performance requirements
6.2-1 Electrical connection
The wiring terminals should be designed to connect the minimum and maximum cross-section cables specified by the manufacturer. Each test must use the most severe configuration (such as the maximum or minimum cross-section for different tests (see Chapter 7): The SPD should have terminals that can be electrically connected by screws, nuts, plugs, sockets or equivalent methods. Check according to 7.3. 6.2.2 Voltage protection level U,
The limiting voltage of the SPD should not exceed the voltage protection level specified by the manufacturer. Check its compliance with the requirements through the test meter of 7.5.
6.2.3 Level I impulse current test
When the manufacturer declares that it meets the requirements of level 1 test, the SPD should be tested according to this requirement. Check its compliance with the requirements through the test of 7.6.5
6.2.4 Level 1 nominal discharge current test
When the manufacturer declares that it meets the requirements of level I test, the SPD should be tested according to this requirement. Check its compliance with the requirements through the test of 7. Compliance shall be checked by the test in 6.5.
6.2.5 Level complex wave test
When the manufacturer states that the requirements of level III tests are met, the SPD shall be tested in accordance with these requirements. Compliance shall be checked by the test in 7.6.7.
6.2.6 Operation load test
When the maximum continuous operation voltage U, is applied, the SPD shall be able to withstand the specified discharge current without unacceptable changes in its characteristics. Compliance shall be checked by the test in 7.6. 6.2.7 SPD disconnector
SPDs may be equipped with SPD disconnectors (which may be internal or external, or both), and their operation shall be indicated. Note: Installation requirements unrelated to the SPD may require additional and/or lower rated overcurrent protection devices. In the type test procedure, the SPD disconnector shall be tested together with the SPD, except for the RCD in 7.7.1 No test is performed during the action load test.
Compliance is checked by the tests of 7.7 and 7.8.3. 6.2.8 Clearance and creepage distance
The SPD shall have sufficient clearance and creepage distance. Test according to 7.9.5. 6.2.9 Tracking resistance
The insulating materials necessary to keep the current-carrying parts in their position shall be non-tracking materials, or they shall be of sufficient size. Test according to 7.9.6.
6.2.10 Dielectric strength
The enclosure of the SPD shall have sufficient dielectric strength to take into account insulation damage and to prevent direct contact. Test according to 7.9.8. 6.2.11 Short-circuit current withstand capability
The SPD shall be able to withstand the power supply short-circuit current until the SPD itself is disconnected, or an internal or external overcurrent disconnector or overcurrent protection interrupts the short-circuit current. Test 6.2.12 Status Indicator Action in accordance with 7.7.3
General Requirements
During the entire type test, the status displayed by the indicator shall clearly indicate the status of the part connected to the indicator.2 test to check whether it meets the requirements.
Note: If space is limited, the manufacturer's name or trademark and model should be marked on the appliance. Other marks can be marked on the small package. 6.2 Electrical performance requirements
6.2-1 Electrical connection
The wiring terminals should be designed to connect the minimum and maximum cross-section cables specified by the manufacturer. Each test must use the most severe configuration (such as the maximum or minimum cross-section for different tests (see Chapter 7): The SPD should have terminals that can be electrically connected by screws, nuts, plugs, sockets or equivalent methods. Check according to 7.3. 6.2.2 Voltage protection level U,
The limiting voltage of the SPD should not exceed the voltage protection level specified by the manufacturer. Check its compliance with the requirements through the test meter of 7.5.
6.2.3 Level I impulse current test
When the manufacturer declares that it meets the requirements of level 1 test, the SPD should be tested according to this requirement. Check its compliance with the requirements through the test of 7.6.5
6.2.4 Level 1 nominal discharge current test
When the manufacturer declares that it meets the requirements of level I test, the SPD should be tested according to this requirement. Check its compliance with the requirements through the test of 7. Compliance shall be checked by the test in 6.5.
6.2.5 Level complex wave test
When the manufacturer states that the requirements of level III tests are met, the SPD shall be tested in accordance with these requirements. Compliance shall be checked by the test in 7.6.7.
6.2.6 Operation load test
When the maximum continuous operation voltage U, is applied, the SPD shall be able to withstand the specified discharge current without unacceptable changes in its characteristics. Compliance shall be checked by the test in 7.6. 6.2.7 SPD disconnector
SPDs may be equipped with SPD disconnectors (which may be internal or external, or both), and their operation shall be indicated. Note: Installation requirements unrelated to the SPD may require additional and/or lower rated overcurrent protection devices. In the type test procedure, the SPD disconnector shall be tested together with the SPD, except for the RCD in 7.7.1 No test is performed during the action load test.
Compliance is checked by the tests of 7.7 and 7.8.3. 6.2.8 Clearance and creepage distance
The SPD shall have sufficient clearance and creepage distance. Test according to 7.9.5. 6.2.9 Tracking resistance
The insulating materials necessary to keep the current-carrying parts in their position shall be non-tracking materials, or they shall be of sufficient size. Test according to 7.9.6.
6.2.10 Dielectric strength
The enclosure of the SPD shall have sufficient dielectric strength to take into account insulation damage and to prevent direct contact. Test according to 7.9.8. 6.2.11 Short-circuit current withstand capability
The SPD shall be able to withstand the power supply short-circuit current until the SPD itself is disconnected, or an internal or external overcurrent disconnector or overcurrent protection interrupts the short-circuit current. Test 6.2.12 Status Indicator Action in accordance with 7.7.3
General Requirements
During the entire type test, the status displayed by the indicator shall clearly indicate the status of the part connected to the indicator.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.