GB/T 3984.2-2004 Power capacitors for induction heating devices Part 2: Aging test, destruction test and internal fuse isolation requirements
Some standard content:
GH/T3984.2——2004/1EC1S60110-2.2000GBT3984 Power capacitor terminals for inductive heating devices are divided into two parts: Part 1 General description
Part 2: Aging test, destructive test and internal fuse isolation requirements: Part 2 is GV=1981, this part is equivalent to IF:TSEC12.2000 Power capacitor terminals for inductive heating devices Part 2: Aging test, destructive test and internal fuse isolation requirements (English version). For the convenience of use, this part has made a contraction to IF0.2, and this part\ is used to replace "this standard"; the decimal point symbol "\" is used to replace the decimal point symbol "," and the front of the international standard is crossed out. Compared with the relevant content in JB711℃--1993, the main changes in this part are as follows: the aging test items are added; the board failure test items are added; the applicable items are not applicable to the high voltage capacitors used in the tuning circuit, the induction heating device without internal wire or the self-heating device. The radiation record is added. Appendix B is included in this part.
Appendix 4 and Appendix H of this part are both normative appendices proposed by China Electronics Industry Association.
This part is organized by the China Electric Power Equipment Standardization Technical Committee SHTS: 25) The previous units of this part are Xi'an Electric Power Research Institute and Xin'an Huizhong Power Equipment Co., Ltd. The main core rate personnel of this part are: Liu Jian, Yao Jianli. The technical release status of the replaced standard in this part is; H732—195H732-1GH39841983.H7110--1993m
T.1 Scope
GB/T 3984.2—2004/EC:TS 60110-2:2000 Power capacitors for induction heating devices
Part 2: Aging test, destruction test and internal fuse isolation requirements This part of GH/T3434 applies the requirements of the electrical zero terminal in accordance with CT/3DR1.12004 and gives the requirements for the chemical test and destruction test of the capacitor, as well as the requirements for the internal hairspring isolation test. Note that the clauses in the corresponding normative reference documents 1 and 2 of 33.1:2004 become part of the clauses through reference in this part. Note: The date of the plan is the date of establishment. All subsequent amendments or revisions (including errors or modifications) and minor certificates can be used for this part. However, the latest version of this document may also be used in accordance with the agreement of the part. The referenced documents are not more than the date of the month. The following new versions apply to this part: /3934.14 Power capacity for induction heating devices [Part 1: Total (50110118111.3. Definitions
This part adopts the new definitions in GB/T3984.12002, 2 Quality requirements and test copies
2.15 Old The aging test is carried out to verify that the accelerated damage caused by the elevated temperature and field strength will not cause deformation due to wear. Unless otherwise specified, the test frequency shall be 50 or 60 Hz. The aging test shall be carried out on isolated units. The test unit may be a production unit or a model unit. The model unit shall not be equivalent to the production unit in the aging test. The limitations on model units are detailed in Appendix B. 2.15.1 Test preparation and initial testing
During the aging test, the temperature of the medium shall be at least equal to the upper limit of the cooling medium specified on the nameplate plus the average temperature of the production unit measured when the unit was tested at the thermal stability station, or the higher of the two. During the aging test, the test unit shall be placed in a drying oven filled with air and placed vertically against the wall. The drying temperature shall be adjusted to the required temperature of the medium. The temperature of the drying oven shall be kept constant with an allowable fluctuation range of 12 to 10K. Before discharging, the unit shall be subjected to a temperature change of 12h at this temperature. Special circuits and period limits (see T3/T4.1--204 and 2.4).
! The temperature of the field can be calculated from the relationship between the capacitance and the gain of the three-mode resistor from the internal and external temperature of the device. The relationship between the internal and external temperature of the device can be calculated from the relationship between the capacitance and the gain of the three-mode resistor from the internal and external temperature of the device. 2.15.2 Test method
The unit is energized at 101..1.25 or 1.55 [500] (optional) by the manufacturer! The duration of this test is long, so as to allow the switch to be interrupted. During the short circuit, the unit should be kept in a controlled ambient temperature. 2.15.3 Final measurement of loss tangent and loss tangent After completing the aging test, repeat the measurements in 2.15 at the same voltage, frequency and frequency. 2.15.4 Acceptance criterion If no shock occurs, the test unit is considered to have successfully passed the aging test. The difference between the capacitance reading and the measured value in 2.15. For non-white elephant capacitors, it should not be greater than the equivalent of one internal wire action or one internal wire action. For low-voltage capacitors, it should not be more than 2%. The measured value of the loss tangent should not exceed the maximum value stated by the manufacturer. When testing two units, there should be no unit damage (breakdown, excessive current change, and loss angle exceeding the limit). When testing three units, unit damage is acceptable. 2.16 Destruction test
Most of the capacitors in this study have traditionally been protected by internal fuses, positive force solutions or disconnectors: for high-specification non-self-healing capacitors used in circuit converters, they are made without any protection: they also provide protection by disconnecting the power circuit in the event of a circuit failure. The damage test is not suitable for this type of device, and this test is not used for self-inductive capacitors with internal fuses. The internal disconnection test is performed (see 2,1t). Except for the high frequency container, if there is no internal fuse or lamp, the container is self-healing, the following procedure must be followed:
2.16.1 Test procedure
The self-healing unit should be tested.
When the manufacturer confirms it, the components that have been tested can be used. The original product of the test is powered by the internal DC power supply to protect the components from damage, and then the performance of the repaired device is checked. For the self-healing device without internal fuse, the various methods listed in the appendix can be used to promote the location of the component according to the manufacturer. One of them is selected.
The container is placed in a gas-generating oven with a temperature maintained at a temperature higher than the temperature of the container. When all parts of the appliance reach the temperature of the oven, the circuit is disconnected and the test sequence is carried out. If the circuit breaker with pressure indicator is replaced by the pressure indicator in Figure 1 for protection, the circuit breaker with pressure indicator control should be used.
with temperature switch or other indicator agreed by the manufacturer and the user, the pressure method should be adopted, 1) set the selected switch H and K to the first position, set the power supply current to 3U: · and record the capacitor current b) set the self-cleaning power supply current to the required value, then set the switch II to the second position, adjust the short-circuit resistor to 301A,
, set K to the second position, and apply the white proof test to the capacitor. The state is maintained until the indicator rate is about 32--58. d) Then open the K position and apply a test voltage to the device for 1 second (100V, 50V) for 5 minutes. During this period, pump the power supply again. The circuit for destructive test in Figure 1 may have the following situations: GR/T3984.2-2904/1FCTS60110-2:2000 - Both current meter I and voltmeter T indicate zero. In this case, check the fuse F. If one has blown, replace it. Apply the same alternating current to the capacitor. If the breaker blows again, the procedure will stop. If the breaker does not blow, continue to perform the desired sequence using the switch. The current indicated by meter 1 is zero and the voltmeter U indicates 1.3. In this case, continue with item 1 and the procedure will stop. 4 After the interruption procedure, cool the capacitor to ambient temperature and conduct an electrical test with external labor according to 2.5 of GB/T3984.1-200. The current of the AC power supply at the terminals of the capacitor should be 10.5I.. (see 3.20 of GB/T3981-200-1). The rated current of the circuit breaker should not be less than 21.,2.16.2 Test requirements
When the test is completed, the case of the capacitor should be intact. Only when the following conditions are met, the exhaust hole is allowed to have minor damage (cracks).
a) The expelled material can be wetted to the outer surface of the capacitor, but the material shall not fall off. The outer surface of the capacitor may be deformed and twisted, but it shall not be excited. ) should not burn the corresponding (or) six feet from the opening 11. This can be checked by using cloth (twisted cotton cloth> The method of turning the capacitor up to the next level is to monitor: the gauze burns into a grilled fish as the criterion for failure. 2.17 Internal fuse disconnection test
2.17.1 Overview
This test replaces the destructive test of non-self-healing devices with internal dropouts [see 2.16]. The shrink wire is connected to the component and the component is rubbed. This wire is used to disconnect the component. Therefore, the current and voltage range of the fuse depends on the design of the resistance and capacitance, and in some cases also depends on the capacitance of the two fuses. The internal rate of action depends on the effective electrical energy of the component or unit connected in parallel with the component or unit;.-Working problem fault heart flow.
The fuse can withstand the 65/3984.1-2 ( All type tests and output test wire breaking tests of capacitor units of 004 should be carried out on the completed capacitor unit, or on two units, which can be selected by the manufacturer. Two units are used for testing, one unit is tested at the lower limit voltage, and the other unit is tested at the upper limit voltage. All factory tests specified in single-seat circuit (13/991.1-2004) are applicable to output tests, safety measurements, etc. It may be necessary to conduct some tests on the unit under the stress test, for example, the ones reached in the addition of A. Also refer to the test methods of the middle-aged mountain in the record, 2.17.2 High isolation requirements
When the standard and output specifications occur within the range, the fuse should preferably disconnect the soft chapter element, where and are the lowest and highest instantaneous values of the single-terminal voltage between the battle chapters, respectively, and the recommended values are as follows;
--ur =0. 5 Ve tr:
u,=2v2 The value of U..
is determined based on the voltage that may appear on the capacitor unit terminals at the moment of component breakdown. The constant value is also considered after the test. If the user specifies different upper and lower values of & and fear, the upper and lower limits of the frequency voltage
should be based on the agreement between the manufacturer and the user. 2.17.3 Requirements
action is free, the melting plate of the pure gap current can withstand the full voltage of the component, any unbalanced voltage caused by melting action, and any short-term transient overvoltage caused by normal change during the self-penetration period. 3
GB/T3984.2—2004/TECTS6D110-2;200C During the life of the device, the fuse should be able to withstand the net current that may occur during the life of the device due to the cut-off of the fuse, and the fuse on the undamaged component should be able to withstand the effective current caused by the breakdown of the component. The fuse should be able to withstand the current caused by the failure of the unit outside the circuit in the voltage range of 2.73°C. 2.17.4 Isolation test (type test)
a) Test method
The isolation test of the fuse should be carried out at the lower limit voltage of 3.73°C and the upper limit voltage of 2.73°C. If the test is carried out with DC, the test voltage should be an estimate of the corresponding AC test voltage. If the test is carried out with AC, it is not necessary to use a reduced value to trigger the element at the lower limit voltage. Some test methods are given in the appendix.
The test circuit of the test circuit shall measure the circuit to show that the fuse has been opened. The measurement method adopted shall have sufficient sensitivity to detect the actual change of the circuit caused by a long fuse!
e) Checking the components
Before opening, there shall be no obvious deformation of the outer shell.
After opening the outer cover, a check shall be made to determine that no defective terminals are obvious;
no more than one (or one tenth of the directly connected components with fuses) external fuses are damaged (see Note 4, 1). If the test circuit in Appendix A (6) is used, the standard of 1 shall be observed. Note 1: Small changes in the diffusion agent do not affect the standard of the instrument. Note 2: In the case of a good wire or disconnected component, the residual current of all components should be discharged to ground. The voltage after opening the shell should be 3V (the good voltage of the element) between the broken component and its broken wire. The test time is 10. During the test, the fault is not allowed to break. Note: For all units with difficult components and the test method of Appendix A, or all units, the room test can be used before opening the unit. The final test time is calculated by the electrical ratio of the capacitor, and the ratio is ", when the component is disconnected, the difference between the component and the disconnected part is [%/2,
Appendix A
(Normative Appendix)
CB/T 3984.2-2004/1FC:TS 60110-2:20C Method for Promoting Breakdown of Non-Healing Devices with or without Internal Fuse A.1 As described above (only applicable to capacitors with internal fuses) During the test, record the voltage and current of the capacitor to prove that the fuse has been disconnected. For the test with current, the test voltage should be maintained at least> 303 after the breakdown to confirm that the disconnection is effective and there is no need to rely on the power supply. In order to ensure the final good current, when testing under the upper limit voltage, the rate of the current drop between the two parts of the test should not exceed 30% except for the concept process. If the voltage drops by more than 6, measures should be taken to make the test system and the received data and the fault data equal to the running components. The factory should conduct tests under these conditions to verify whether the melting action is satisfactory. Note: Under the upper limit voltage, the fuse should be cut off according to the report and take the element of the fuse. Note: When entering the test, the results of the test should be corrected to prevent the device from exploding. A.2 Test method
One of the test methods 1 should be used. Other methods: 1. Thermal capacitors are only suitable for dry-connected containers with internal molten flames. Before applying the lower limit AC test, place the capacitor unit in the can pole for preheating: the preheating temperature (1CU~14U:) must be strong, in order to obtain the first breakdown within the time (minutes and hours) of the air channel. Note: Because there is no Kangyin, the test cavity can be installed without a signature. The door is closed between the test chamber and the voltage is collected. When the voltage is low, a small dispute occurs before the voltage is reached. 1) Mechanical breakdown components Www.bzxZ.net
machine Mechanical piercing component description: The nail is driven into the component through a pre-drilled hole. The test voltage can be direct or alternating. If only alternating voltage is used, the time of the test should be selected so that the penetration occurs at a peak value. 1: The components cannot be guaranteed to be equal.
juice? : In order to avoid the possibility of external flash along the via or through the via, the "via" made of insulating material can be cut and the external current can be increased or increased. The test is carried out separately at the end of the component. Note: The following points are applicable to the components between the components (first · impulse method)
In this component of the test unit, each piece of the dielectric layer is connected to a separate piece of E.
The test circuit can be cross-linked or direct, printed, and sent to the block. In order to make this element without any impact sequence, the impulse voltage between the plate and the plate of this modified component should be close to the peak output voltage under the condition of the voltage of the alternating current. The element is fused at the time of the impact. (The second type can be sent)
In this element of the test unit, each element can be installed with an additional short metal wire connected to the plate and ensure that the two dielectric layers can be moved to a separate insulated rock factory. The test can be made of industrial or AC mountain, and the metal wire is effectively burned out when the capacitor is discharged to a certain extent. The metal wire is effectively burned out. The metal wire is effectively burned out when the capacitor is discharged to a certain extent ...
When using AC voltage, the charge and discharge that causes the wire to burn out should be ignited at the instant of the voltage change (third and force method). During manufacturing, a small part of a component (or several components) in the unit should be removed and replaced with a dielectric with weaker resistance to electricity. For example, the original film paper should be cut down by 10cm~20cm and replaced with two-layer paper. Attached R
(Normative Appendix)
GR/T 3984.2—2Q04/1KC TS 6C11Q-2:20D0 Requirements for the design of model units
If the design of the model unit and its internal components meets the following requirements, the model unit is considered comparable to the production unit. B1 type unit component design standards
a) The number of layers of solid dielectric items inside the module should be the same or less, and the same liquid should be used (if there is one: the dielectric should be within 715%--130 degrees, and the rated electric field strength should be the same or the same. 1) The composition of the fixing dielectric material is the same: paper or membrane, etc.
) For metallized film or metallized city, the composition, surface design, edge and surface resistance of the metallized layer are the same within the specified storage pressure difference range).
The solid and liquid dielectric materials should comply with the technical specifications of the same manufacturer. d
The aluminum model design should be opposite: thickness alternate (2C%). Aluminum folding edges are prohibited to be convex or not convex. Aluminum machine edges and deformation! Cutting edge (design features!; use reverse less or the same.
E): The connection method of components should be opposite, such as lead sheet, welding, etc.) The width of the optical component (effective box width> is allowed to vary within %~4%, and the component length (effective extension length) is allowed to vary within n·~GC%.
B.2 Model unit design
a) Compared with the production order, the assembly method of the components that meet the requirements of the month 1 should be similar. The components should be relatively close or thin, and the compression coefficient should be within the same dust port tolerance.
At least = components should be reversed so that at the rated voltage! The capacity of the card and the rated capacity should not be less than ten kvar.h)
. The electrical connection method inside the card should be assumed. The connection pins on the outside of the components can be enlarged to accommodate, for example, the current increase caused by the parallel connection of some components:
. For shell insulation of the same or thinner type, the manufacturer's standard design should be used. Compared with the product unit cabinet, the shell size is as follows:
2. External sound width: 50% to (core length;
Shell height: 5% to 400%,
External filling length: 50% to 200%,
Some: Taking into account the changes in component size, the above note that the external size is smaller than the other system: to be required, the external calibration materials should be the same, or the thermal performance is equivalent, the surface characteristics of the battery can be different. In order to correspond to the test voltage and/or test age, the design and the amount of the sleeve can be adjusted. The baking process should be able to produce the same compensation unit in all aspects of its specifications, such as the type of discharge electrode and internal wire components, and the output should be the same: the production process selection should also be the same as the total unit of the production.
GB/T 3984,2—2004/TEC TS 6C119-2:2000
JB/T8957-1993
Method for measuring the accuracy of the cold capacitance angle (B/TB3515ss.idc95
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