NB/T 10282-2019Test guide for metal-oxide surge arresters without gaps for alternating-current systems (English PDF)

3.1 Lightning arrester of the same family series

The same series of lightning arresters have the same design structure and materials, and the metal oxide resistors used have the same specifications.

Note 1. The definition of the same family of lightning arresters is only applicable to porcelain jacketed arresters and composite jacketed arresters.

Note 2. Each type of arrester in the same family of lightning arresters differs only in rated voltage and continuous operating voltage, and should have the same nominal discharge current and the same The jacket design structure, each kind of arrester component should have the same sealing structure. See Appendix D for typical series of lightning arresters of the same family.

4.1 Porcelain jacket surge arrester and composite jacket surge arrester

4.1.1 Specified parameters of arrester

The manufacturer shall provide the relevant specified parameters of the porcelain jacketed arrester and composite jacketed arrester, and the specified parameters should at least include those in Table 1. Content.

4.1.2 Lightning arrester product information

The lightning arrester product information provided by the manufacturer shall at least contain the following content.

--Surge arrester model and serial number;

--Number of lightning arrester components;

--Number of parallel columns;

--The number of resistors assembled in each component;

--Surge arrester design type. "A" or "B".

4.1.3 Metal oxide resistor information

The manufacturer shall provide the following information of metal oxide resistors.

--Number (if any);

--Metal oxide resistor chip manufacturer (if the resistor chip is purchased outside, the name of the metal oxide resistor chip manufacturer must be clearly indicated);

--Metal oxide resistor chip specifications.

4.1.4 Arrester drawing information

The lightning arrester drawing information provided by the manufacturer should at least contain the content in Table 2.

4.2 Gas Insulated Metal Enclosed (GIS) Lightning Arrester

4.2.2 Lightning arrester product information

The lightning arrester product information provided by the manufacturer should at least include the following.

--Surge arrester model and serial number;

--Number of parallel columns;

--The number of assembled resistors.

4.2.3 Metal oxide resistor information

The manufacturer shall provide the following information of metal oxide resistors.

--Number (if any);

--Metal oxide resistor chip manufacturer (if the resistor chip is purchased outside, the name of the metal oxide resistor chip manufacturer must be clearly indicated);

--Metal oxide resistor chip specifications.

4.2.4 Arrester drawing information

The lightning arrester drawing information provided by the manufacturer should at least contain the content in Table 2.

4.3 Separate and uncharged shell arresters

4.3.1 Specified parameters of arrester

The manufacturer shall provide the relevant specified parameters of the separate and uncharged shell arresters, and the specified parameters shall at least include those in Table 4.

Content. b Suitable for power distribution type arresters. c Suitable for lightning arresters for power stations. d When the expected short-circuit current is 1kA and below, the rated value can be declared as "0". e The manufacturer needs to provide the applied overvoltage level and corresponding duration during the test. f The manufacturer needs to provide the peak value of the resistive component of the power frequency reference current of the arrester and the corresponding minimum power frequency reference voltage, the DC reference current and its corresponding g The manufacturer shall provide the specified value of the full current of the test sample and its resistive component under continuous operating voltage. h According to the test items to be carried out, the manufacturer needs to provide the specified value of the lightning impulse residual voltage under the nominal discharge current of the arrester, and the nominal discharge current I According to the required test items, the test parameters of lightning impulse voltage withstand test and power frequency voltage withstand test provided by the manufacturer. j Determine the test voltage in the long-term stability test. k sqrt means must provide.

4.3.2 Lightning arrester product information

The lightning arrester product information provided by the manufacturer should at least include the following.

--Surge arrester model and serial number;

--Number of lightning arrester components;

--Number of parallel columns;

--The number of resistors assembled in each component.

4.3.3 Metal oxide resistor information

The manufacturer shall provide the following information of metal oxide resistors.

--Number (if any);

--Metal oxide resistor chip manufacturer (if the resistor chip is purchased outside, the name of the metal oxide resistor chip manufacturer must be clearly indicated);

--Metal oxide resistor chip specifications.

4.3.4 Arrester drawing information

The manufacturer's drawing information for the arrester shall include at least the content in Table 2.

5.1 Type test report classification and test items of porcelain jacketed arresters and composite jacketed arresters

When the porcelain jacketed arrester and composite jacketed arrester provided by the manufacturer are tested according to the test items in Table 5 and Table 6, and the results are checked If it meets the manufacturer's specified parameter requirements, the laboratory can issue the following related reports.

--a type test report See Table 5 for the type test items of the porcelain jacketed arrester, and see Table 6 for the type test items of the composite jacketed arrester.

5.2 Type test report classification and test items of gas-insulated metal-enclosed (GIS) arresters

When the gas-insulated metal-enclosed (GIS) arrester samples provided by the manufacturer are tested in accordance with the test items in Table 7, and the test results conform to When complying with the manufacturer's specified parameter requirements, the laboratory can issue the following related reports.

--a type test report The gas insulated metal enclosed (GIS) arrester type test items are shown in Table 7. Description.

5.3 Type test report classification and test items of separate and terminal arresters

When the separate and terminal arresters provided by the manufacturer meet the specified requirements, the laboratory can issue the following related reports.

--a type test report The type test items of separate and terminal arresters are shown in Table 8.

C.1

Test on the whole arrester or arrester components

C.3 Compare two cooling curves to calculate relative temperature and compensation temperature

The calculation of relative temperature and compensation temperature is only for the cooling phase. The process of the cooling phase is defined as 2 h (7.200 s).

C.3.1 Calculation of relative temperature

For each curve (lightning arrester and proportional unit), the relative temperature should be calculated according to the formula.