GB/T 14598.16-2002 Electrical relays Part 25: Electromagnetic emission tests for protective devices of measuring relays
other information
Release date:2002-11-25
Review date:2004-10-14
drafter:Yang Dalin, Li Kang, Hao Xuefeng, Liu Wen
Drafting unit:Xuchang Relay Research Institute
Focal point unit:National Technical Committee for Standardization of Measuring Relays and Protection Equipment
Proposing unit:China Electrical Equipment Industry Association
Publishing department:General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
competent authority:China Electrical Equipment Industry Association
Some standard content:
ICS 29. 120.70
National Standard of the People's Republic of China
GB/T 14598,16-2002/IFC 60225-25.2000 Electrical relays
Part 25 : Electromagnetic emission tests for measuring relays and protection equipment(IEC502:6·25.2000,IDT)
Published on November 25, 2002
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on June 1, 2003
This part is Part 25 of B/T 14558 for devices in the atmosphere. This part adopts the international standard GB/T 14598.T6-2002/1HC 60225-25.20001F0255-25:2000 and is based on GB/T 14598.T6-2002/1HC 60225-25.20001F0255-25:2000. It also refers to the applicable part of GB/T 14598.T6-2002/1HC 60225-25.20001F0255-25:2000. It ... is based on GB/T 14598.T6-2002/1HC 60225-25.20001F0255-25:2000. It is based on GB/T 14598.T6-2002/1HC 60225-25.20001F0255-25:2000. It is based on GB/T 14598.T6-2002/1HC 60225-25.20001F0255-25:2000. It is based on GB/T 14598.T6-2002/1HC
Part I: Lin, Liu Wen, CB/T 14598.16-2002/1EC60225-25:200CIEC Foreword
: The International Electrical and Electronics Conference (IEC) is a world standardization organization that includes all national committees (IEC National Committees). It is the main international organization for standardization of all relevant topics in electrical and power equipment. In addition, it also publishes international standards and requires technical committees to do this work. In this activity, any country may ask the committee to participate in its own interest. Countries associated with IEC may also participate in this work. 1. The European Commission and the International Organization for Standardization (ISO) have close cooperation on the project.
2. Each technical committee has representatives of the relevant countries in the relevant content, so the IE makes product decisions or cooperates with the international community as much as possible on the relevant technical content. 3. The published single standards and technical guidance are used in a continuous form and are accepted by the national committees in principle.
4. In order to promote international consensus, the national committees will make full use of the European Commission to the greatest extent possible when formulating national and regional standards. Standards, relevant national standards or local standards and 1F marking any differences between the two sides are not mentioned in the standard clear Shun Shun 51 do not mention the common period of its information, nor the quality of the information provided by the information provided in a certain standard: 6 It is worth noting that some elements in the international standard may involve patent rights, the small shall not be responsible for any or all of these detailed patent rights,
International standard IECC255-25 is an IFCTC95\Quantity Disk Xie Electric and Protection: Production Device\This marking text is formulated based on the following meanings: || tt||95:47/FD1S
Detailed information on the relevant section can be found in the investment report listed in the work surface clothing grid. This publication is derived from the 1S0/F purchase rules: the emperor's appendix and the whole material are attached. The technical points will be completed and the content of this report will remain unchanged until 2003. At that time, this publication will be reconfirmed;
·Sea consumption:
·Replaced by a revised edition, the result
·High density packaging.
1 Scope
G B/T14598.16—2002/IEC60225-25,2000 Electrical relays
Part 25: Electromagnetic emission tests for measuring relays and protection devices
This part of GBT14598 specifies the general requirements for the electromagnetic emissions produced by measuring relays and protection devices used in the output protection system, including the control, monitoring and control devices used in the system. It is based on 25 (Appendix A). This part specifies the limits of acceptable transmission and radiation emissions and describes the following test procedures. The purpose of the test is to confirm that the test equipment will not produce any long-range or radiated emissions exceeding the above-mentioned limits.
Any equipment or part of equipment that has radio transmission and (modification) reception requirements is not required. According to the requirements specified in this part, the new measuring and protection equipment specified in the new test is only a dramatic test. 2 Normative references
The following documents and clauses become clauses of this part through the reference of this part: Any document introduced after the date of publication, any subsequent amendment (without error) or revision is not applicable to this part, however, the parties to the effective period of this part shall study whether the latest version of this document can be used. For any referenced document without an indication of the date of publication, its latest version shall apply to this part. GH/12c.-7-199-Electrical telephone-maintenance electrical appliances (FC6300 (46): 198G43-9 micro#capacitor (50061)
G/T(11.1935 Specification for wireless interference and immunity measurement equipment B925413 Wireless information technology equipment wireless alliance optimal value measurement method (idt (ISPR22: 1?) 5/T1447-1993 Measurement of full power and protection idt1: 6355-6: 1988IE500)\0(4>: 1995 International Electrical T Dictionary (TEV )-Section 448: Bird system protection 3 Terms and definitions
This part of the insurance is in accordance with H486:, B/-2900.17.1E: 60050 (448) except for the following definitions. 3.1
Equipment under test EUT
The equipment under test. It can be a voltage relay or a protection device. 5.2
Identical modules
Modules that are rated according to a given manufacturing specification and within the specified manufacturing range. 3. 3
meu>reaveul1estsite
Test site
Test point electric joint test monitoring area:
Module niodole
CB/I14598.16——2002/Industry 60225-25.2000 Measurement of electrical transformer protection special announcement can be connected to the withdrawn part, 4 emission limit
Measurement of maintenance and protection equipment should comply with individual, 1 willing to do the best to thank the limit and, 2 must be shot when the limit of trust 4.1 conducted emission limit|| tt||This test instrument is used to obtain power supply information.
When using the average receiver and quasi-peak receiver to measure according to 5.2 and 6.2 respectively: the equipment under test should meet the limits of Table 1 (including the lower limit and the quasi-peak limit). If the equipment can also meet the dynamic limit by using the quasi-peak value, it is considered that the combustion test equipment should meet these limits, and the average direct receiver should be used for measurement. Limit (60) +.5MHz.
Table 1 Conducted emission limits
New/MHz
2. 15~-5. 5
4 2 Radiated emission limit
Cui Fengfan
When measuring the micro test equipment according to 3.3, 3.3 and 0.4, the test equipment shall comply with the value in 2: value 2
Table 2 Transmitted emission display value
Number book fan attached/MH
23--23u
223--1 x2
General measurement requirements for emission tests
5.1 Ambient noise at the test site
The emission level should be at least 6B lower than the value specified in 4.1 and 4.2 when the test equipment is in the most environmentally friendly way.
The test site should make the emission of the equipment under test different from the environment. The applicability of the test site in this respect can be determined by measuring the environmental noise level of the test equipment at the most environmentally friendly time to ensure that the noise level is at least 6B higher than the value specified in 4.1 and 4.2. If, in some range, the environment is within the specified limits, the method demonstrated in 5.4 can be used to prove whether the equipment under test meets the specified limits.
If the emission level of the equipment under test does not exceed the specified limits, the ambient level must be 6B lower than the specified value. In this case, the equipment under test is considered to meet the specified limits: 5.2 Requirements for conducted emission measurements
5.21 Test site
The test personnel shall conduct the conducted emission measurements in the following manner: a) in a test pool with no equipment connected to the test site or b) in a shielded room: or
on a metal grounded test site. The test site shall be equipped with a test pool with a minimum of 0.5% conduction rate and a minimum conduction rate of 250 Hz. 2.2 Test receiver
The test shall be conducted using the equipment specified in GR/T14598.16-2002/1FC.60225-25;2000. The voltage under the terminals of the conductor shall be measured using a transimpedance stabilization network including a 500/50H V-type network as specified in GR/T5113.1. The V-type network is required to provide an appropriate commercial frequency impedance and to isolate the faulty circuit from the excitation circuit. The V-type network shall be located at least 08 meters from the nearest boundary of the equipment under test. It shall be connected to the equipment under test via a cable of 1 meter in length. The reference terminal of the V-type network shall be connected to the control board through the shortest possible conductor to ensure safety. The reference line should be connected to the artificial power network. In addition to the grounding wire provided by the manufacturer or specified by the manufacturer, the grounding wire should be 1m long and 1m long. The line should be parallel to the source end and the distance between the three stations should not exceed 0.1m. The other grounding wires (such as the listening wires) that are connected to the same terminal as the ground should also be connected to the V-shaped network. The ambient noise from the local broadcasting facilities may make it impossible to measure at some frequencies. At this time, a suitable auxiliary arc should be inserted between the V-shaped network and the auxiliary excitation trace, or the measurement is completed. The receiving components should be closed with a thick gold mesh, which is directly connected to the ground according to the test system. According to the filter method, the sound resistance of the mesh meets the requirements at the test frequency. 5.3 Measurement requirements for radiated emissions
5.3. 1. Test site
The whole site is flat, there is no reflective structure near the air line, and there is enough air return to meet the requirements within a certain distance. In the air line, there is no reflective structure and no sufficient space between the test equipment and any reflective structure. The figure shows a test site that meets the standard: the test site is located in a long draw 2 (11n, 17.32rm axis area. The test equipment and the flux equipment are placed at the focus of the bone with a distance of 1Cm respectively. The test site should be covered by a piece of land that can be extended between the equipment and the crown. The ground plate is used to expand the boundary of the test equipment: the end of the test sound is less than the test end, and the national measurement line and the common support structure are less than 1IL. 2 Give a diagram of the ground plate that meets the technical requirements of these people. In order to meet the two requirements of the specified site, some of the radio sites also need to be evaluated for the large area of the ground. The ground plane is shown in the figure. The internal measurement frequency is about 0mm>1Hz. If only the test site has the above characteristics, the evidence should be proved that the error caused by this kind of uniform ground will be invalid. An example of a site that can be selected is a pool of radio waves. The test site should be effectively reduced by measuring the horizontal and vertical polarization of the site, and the distance between the antennas and the cat's transmitting test site should be reduced by using the "virtual" measurement of the distance between the antennas and the cat's transmitting test site.
If the difference between the measured value and the theoretical value of the actual site is less than 124B, the test site is considered to be adaptable (see GH/T 113.1): 5.3.2 Measurement receiver
The test site is to be a non-peak detection receiver in accordance with G[36]131. 5.3.3 The antenna for the carrier
shall be a non-peak antenna. For frequencies from 1000 MHz to 1000 MHz, the antenna length shall be equal to the grip length of the antenna. For frequencies from 1000 MHz to 1000 MHz, the length shall be the grip length of the antenna: details are given in GH/T 113.1. The antenna height shall be such that the center of the antenna shall be adjustable between 1 m and 2 m above the ground. The nearest point of the antenna to the ground shall be not less than 0.2 m.
Note: If the product is tested quickly with a large excitation test system and the product is sensitive to the sky test, it can be used to test the product. 6 Test procedures for launch test
6.1 General configuration of the test equipment
Test state, the equipment should be in the standard conditions specified in (BT21317). During the test, the auxiliary mass excitation and the cat micro-excitation should be 3
GB/T14598.16-2002/EL60225-25,2000 scheduled The corresponding four circuits of the equipment under test are arranged in the following positions. The three-stage static state of the equipment under test should be used as a reference. The equipment under test should not be in a dynamic state, nor in an action state. Note that during most of the working life measurements, the protective equipment and the equipment under test are in a static state. The time for the equipment to move or complete an action is extremely limited. Under these conditions, the equipment under test should be within the specified range. If possible, it is recommended to calibrate all electrical signals and signals during the three test days outside the test site. Combined equipment and The relationship of the ground plane should be equivalent to the actual use situation. All parts of the test equipment should be free of any other metal. 8. The test equipment should be placed on a table with no connection to the ground. The test is carried out separately. In the case where the test equipment is installed in a dedicated cabinet, the test equipment can be in the cabinet during the test: the cabinet should be vertically connected to the ground, but there should be a distance of about 5.1m between the cabinet and the ground plane. For safety reasons, the grounding should be connected to the whole cabinet. If the grounding point is not provided or specified by the system, for practical reasons, the grounding conductor should be 1 m long and run parallel to the auxiliary power supply line with a resistance not greater than 0.1 m. Other grounding connections (e.g. for FM radio) provided or provided by the same system as the safety connection should also be connected to the reference ground. The length of these connections should be the same as the wiring method specified by the manufacturer, that is, the wiring should be on the test equipment side: directly upward or downward. 6. 2 Measurement of conducted emissions
The measurement is carried out in advance. The receiving frequency fluctuates around the limit value: at each maximum rate, record the high reading at the same time. Any interruption, the previous reading should be ignored: E.3 Measurement of radiated emissions
The distance between the test equipment and the measuring antenna is reduced to 1\. In order to transmit from all directions, the test equipment is placed on a turntable so that it can be rotated relative to a fixed antenna. The turntable should rotate in all directions, while the measuring antenna should be pointed horizontally and vertically. The antenna can also be turned. The distance between the equipment under test and the nearest part of the test line should be the height of the water between the test equipment and the nearest part of the test area. The boundary is defined as an imaginary vertical line around the device under test. All cables and connected equipment between the systems should be included in this boundary. The center of the test line should be adjusted between 1m and 1m. In order to measure the maximum transmission value in each test, the measurement receiver should read the value close to the limit value. The number of readings should be recorded at each measurement. Any short-term, isolated readings should be ignored. 6. The relative output of the equipment under test and the secondary line to the maximum emission shall be measured at different distances from the antenna. For this purpose, the emission characteristics of the equipment under test shall be as specified in 5.5.1 and e.3. If the distance cannot be determined at 13 m due to a relatively high ambient temperature (see 1) or other reasons, the product may be tested at a distance of not less than 1 m. If this is done, the test report shall record the following requirements and other factors. The measurement is carried out at a distance of 0m. The recorded data shall be normalized by an inverse factor of 20B/10 times the test distance. The acceptable field effect at a relatively close distance can be determined by the following formula:
Due to the influence of the small near field, in the vicinity of MH2 and when the distance is less than III, the test report shall be carried out before the test.
In the frequency band of the ambient noise output value (lower than the limit value () of .1), the noise of the equipment under test can be interpolated from the corresponding protection value to the internal capture value on a series of curves. The curve describes the relationship between these two statistical data. 4
Qualification criteria
GD/T 14598.16—2002/1EC 60225-25.2000 If the reception and guidance and transmission limits do not exceed 1.: and 1.2 The limit values given are as follows: The equipment under test complies with the provisions of this standard.
According to GB924, the net emission evaluation results of the equipment under test with the same module of each input are also applicable to the configuration of the modules, because in practice, the emissions of the modules are not superimposed. This principle can be used to measure the average energy consumption of multiple devices with the same energy consumption. 8 Test report
The test requirements should include:
, the marking and configuration of the equipment under test;
· Test conditions:
. The case and definition of the equipment under test! bzxZ.net
, the type of conductor to be connected, the interface between the test device and the excitation device, the action system of the test device, such as the setting and recording value of the excitation, the position of the test device, the setting of the measurement value such as bandwidth, step size, measurement time, the measurement equipment used, the number of firing points at each frequency, etc.
·Test conclusion! (Pass/Fail),
, and the test description in 1.3.1. The test site size is as follows:
, the receiving unit is
F-(J-2)m
. It is the effective size of the element being affected by the team
W=ic+2m
especially the large one
2 Small size of metal floor
GB/T14598.16-2002/I8C:60225-25:2000 Appendix A
(Informative Appendix)
The measurement of energy-saving and protective devices in their local sites shall adopt the grade B specified in this section. The measurement of energy-saving and protective devices in their local sites shall adopt the grade B specified in this section. For example, when the measurement of energy-saving and protective devices is used in places such as substations and power plants, industries and factories, the grade B specified in B24 can be used. Appendix B
Informative appendix
Note on the origin of this part
GB9254 specifies the test procedures for information technology equipment (such as computers) in order to determine the limits of the radiation that such equipment can generate. Other standards have also been considered and used. In particular, R9 and R4 are different. In order to define the requirements for the emission rate test of radio frequency interference equipment, it was decided to use GB4251 as the reference for this part. The similarity between information technology equipment and power system protection equipment is that both use similar components and circuit technology, including microprocessor technology. As mentioned above, the test equipment and test methods for information technology equipment have been internationally agreed. Therefore, it is appropriate to develop a standard for measuring relays and protection equipment using similar technology:
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