1、i 3s EN 50143-1 : 1993 . BRITISH STANDARD -. - Series power capacitors for systems Part 1. General - Performance, testing and rating - Safety requirements - Guide for installation The European Standard EN 60143-1 : 1993 has the status of a British Standard . CENELEC EN*b0143 93 m 3404583 OLbObb2 77b
2、 BRITISH STANDARD Series capacitors for power systems The European Standard EN 60143 : 1993 has the status of a British Standard Condensateurs srie destins tre installs sur les rseaux UN 621 319 4.016.2 mihenkondensatoren fr Starkstromanlagen BS EN 50143 : 1993 I. CENELEC EN*60L43 93 = 3404583 03606
3、63 602 BS EN 60143 : 1993 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Belgium Denmark Finland France Germany Greece
4、Iceland Ireland Italy Luxembourg Netherlands Norway Portugal spa Sweden Switzerland United Kingdom This British Standard, having been prepared under the direction of the Power Electricdi Engineering Standards Policy Committpe, was published under the authority of the Standards Board and comes into e
5、ffect on I5 1)twmil)t-r lW1 ILSI lW:l The following SI references relate ti) the work on this standard: Committee reference PEU46 Draft for comment 9129696 DC ISBN O 580 22652 2 Amendments issued since publication Amd. No. BS EN 60143 : 1993 I Contents Cooperating organizations National foreword Pag
6、e Inside front cover 1 Foreword 2 Text of EN 601431 3 /;a National annex NA (informative) Committees responsible Inside back cover u inside back cover National annex NB (informative) Cross-references National foreword This British Standard has been prepared under the direction of the Power Electrica
7、l Engineering Standards Policy Committee and is the English language version of EN 601431: 1993 Series capacitrws for power systems,including its comgendum Oktober 1994 published by the European Committee for Electrotechni Stan-on (CENELEC). It was derive by CE3WLEC from IEC 143 : 1992 published by
8、the International lectrotechnical Commission (EX) and includes common modifications agreed by CENELEC. As a consequence of publishing BS EN 60143-2, this British Standard has been renumbered as BS EN 601431. I; Compliance with a British Standard does not of itself confer immunity from legal obligati
9、ons. 1 CENELEC EN*bOL43 93 = 3404583 0360665 485 0 EUROPEAN STANDARD EN 60143 NORME EUROPEENNE EUROPISCHE NORM September 1993 UDC 621.319.4.016.2 Supersedes HD 339 S1 : 1977 Descriptors. Power capacitors, senes capacitors, capacitors banks, classification, tests, insulated levei, safety requirements
10、, marking, characteristics English version Series capacitois for power systems Part 1: General - Performance, testing and rating - Safety requirements - Guide for instaliation (IEC 143 : 1992) Condensateurs srie destins tre installs sur des r capacitors for motor applications and the like (IEC 252);
11、 capacitors to be used in power electronics circuits (IEC 1071); capacitors for discharge lamps (IEC 566). 5 reactors, damping resistors, breakers, etc.) is under consideration. 6 etc., shall comply with the pertinent IEC standard. The object of this standard is - to formulate uniform rules regardin
12、g performance, testing and rating; - to formulate specific safety rules; - to provide a guide for installation and operation. CENELEC EN*bO343 93 3404583 0360670 _ 842 Page 6 EN 60143 : 1993 1.2 Normative references The following standards contain provisions which, through reference in this text, co
13、nstitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions
14、of the standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 50(436): 1990, International Electrotechnical Vocabulary (lEV) - Chapter 436: Power cap a citors. IEC 60, High-voltage test techniques. IEC 60-1 :1989. High-voltage test technique
15、s - Part I: General definitions and test requirements. IEC 60-2: 1973, High-voltage test techniques - Part2: Test procedures. IEC 60-3: 1976, High-voltage test technques - Part 3: Measuring devices. 1. inn: IEC 60-4: 1977, High-voltage test technques - Part 4: Application gukle for measunng devices.
16、 IEC 71, Insulation coordination. IEC 71 -1 : 1976, Insulation co-ordinathn - Pad I: Terms, definithm, pnncles and ruleS. IEC 71 -2: 1976, Insulation w-ordinatbn - Pati 2: Application guide. IEC 71-3: 1982, IEC 71-1: 1976, Insuhton co-ordination - Part 3: Phase-to-phase insulation madination. PrinCi
17、ples. rules and appl - condition the capacitor in order to obtain a stable and final tan 6 value (see note in 2.4.2). 2.9.2 Measuring procedure The capacitor unit subjected to the test shall be placed between two barrier units with the same rating, and they shall be energized at the same voltage as
18、the test capacitor. The barrier units shall have almost similar container dimensions as the unit under test. Alternatively, two dummy capacitors both containing resistors may be used as barrier units. Dissipation in the resistors shall be adjusted to such a value that the case temperatures of the du
19、mmy capacitors are equal to or higher than those of the test capacitor. The temperature of the units shall be measured at “equal“ spots which must not be exposed to direct heat radiation from another unit. The separation between the units shall be equal to or less than the normal spacing. The assemb
20、ly shall be placed in still air in a heated enclosure in the most unfavourable thermal position according to the manufac- turers instructions for mounting on site. The ambient air temperature shall be maintained at the appropriate value shown in table 3 (tolerance k2 OC). It shall be checked by mean
21、s of a thermometer having a thermal time constant of approximately i h. This thermometer shall be shielded so that it is exposed to the minimum possible thermal radiation from the energized sample and the energized barrier units. Table 3 - Ambient air temperature in thermal stability test Page 18 EN
22、 60143 : 1993 The test capacitor shall be subjected to an a.c. voltage of substantially sinusoidal form for a period of at least 48 h. The magnitude of the voltage shall be kept constant throughout the test. Its value is derived from the measured capacitance (see 2.3.1) to give a calculated output o
23、f the capacitor equal to 1.5 times the rated output. The test value 1,5 QN is related to the 8 h overload current 1,l I, according to clause 4.1. If this 8 h overcurrent has been increased, the factor 13 shall be increased in square. During the last six hours, the temperature of the container shall
24、be measured at least four times. Throughout this period of 6 h, the temperature rise shall not increase more than 1 K. Should a greater change be observed, the test may be continued until the above requirement is met for four consecutive measurements during a subsequent 6 h period. Before and after
25、the test, the capacitance shall be measured (see 2.3.1) within the temperature range according to 2.1.2 and the two measurements shall be corrected to the same dielectric temperature. The difference between the two measurements shall be less than an amount corresponding to puncture of an element or
26、operation of an internal fuse. When interpreting the results of the measurements. the following factors shall be taken into account: - the reproducibility of the measurements: - the fact that internal change in dielectric may cause a small change of capacitance, without puncture of any element or op
27、eration of an internal fuse having occurred. NOTES 1 When checking whether the temperature conditions are satisfactory, voltage fluctuation, frequency and ambient air temperature during the test shall be taken into account. For this reason, it is advisable to plot these parameters and the temperatur
28、e rise of the container as a function of time. 2 Units intended for 60 Hz installation may be tested with 50 Hz and vice versa provided that the specified output is applied. For units rated below 50 Hz the test conditions shall be agreed between the manufacturer and purchaser. 2.9.3 Capacitor loss m
29、easurement The capacitor losses (or tan 6) shall be measured at the end of the thermal stability test. The measuring voltage shall be that of the thermal stability test. Otherwise 2.4.1 applies. The value of tan 6 measured shall not exceed the value declared by the manufacturer or the value agreed u
30、pon between the manufacturer and purchaser. 2.10 A.C. voltage test between terminals and contalner (type test) I. Units having both terminals insulated from the container shall be subjected to a test voltage applied for 1 min between the terminals joined together and the container. The value of the
31、test voltage shall be chosen according to clause 3.1. Test on units having one terminal permanently connected to the container shall be limited to the bushing and container (without elements). CENELEC EN*b0143 93 m 3404583 OLbOb83 YTO W Page 19 EN 60143 : 1993 The test is dry for units to be used in
32、doors, and for units to be used outdoors it is performed in artificial rain (IEC 60). The position of the bushings when subject to a test in the artificial rain shall correspond to their position in service. During the test, neither puncture nor flashover shall occur. NOTE - Units intended for outdo
33、or installation may be subjected to a dry test only if the manufacturer can supply a separate type test report showing that the bushings will withstand the wet test voltage for 1 min. The position of the bushing in this separate type test shall correspond to the se-ce position. 2.11 Lightning Impuls
34、e voltage test between terminals and Container (type test) 2.1 1.1 General This test is applicable only to units according to the following requirements: - units having all terminals insulated from the container shall be tested in accordance with 2.1 1.2; - units having one terminal connected to the
35、 container shall - on a model unit - be tested in accordance with 2.1 1.3. For units with containers insulated from earth, a lightning impulse test voltage shall be chosen, which amplitude corresponds to the a.c. test voltage according to clause 3.1. The lightning impulse test shall be made in accor
36、dance with IEC 60 but with a wave-shape of (1.2 to 5)/50 ps having a crest value corresponding to the insulation level of the unit according to clause 3.1. The absence of failure or partial puncture during the test shall be verified by recording the voltage and by checking the wave shape. 2.1 1.2 Te
37、st on standard unit Fifteen impulses of positive polarity followed by 15 impulses of negative polarity shall be applied between the bushings joined together and the container. After the change of polarity it is permissible to apply some impulses of lower amplitude before the application of the negat
38、ive impulses. The capacitor is considered to have passed the test if: - no puncture has occurred; - not more than two flashovers have occurred at each polarity; - the wave-shape has revealed no irregularities, or if so, the wave shape recorded at a reduced voltage (50 O%, to 70 % of the test voltage
39、) does not differ significantly from that recorded at test voltage. Alternatively the unit may be tested according to 2.1 1.3. Page 20 EN 60143 : 1993 2.1 1.3 Test on model unit and standard unit The model unit shall be equipped with bushing(s), shall have the internal bushing connection wire provid
40、ed with its standard insulation. shall be filled with impregnant but shall contain no elements. The internal bushing connection wire may be either bent in a U-shape between the bushings or be fitted with a relieving device for the electrical stress. The model unit shall be tested and accepted accord
41、ing to 2.1 1.2. The standard unit shall be subjected to three positive impulses applied between the bushings joined together and the container. The acceptance criteria of 2.11.2 are applicable except that no flashover is permitted. The test on the model unit is intended to verify the external insula
42、tion and the test on the standard unit is intended to verify the internal insulation. 2.12 Cold duty test (type test) The voltages applied during this test shall be substantially sinusoidal. The test circuit shall be suitably damped to reduce overvoltages due to transients. The initial dielectric te
43、mperature of the test unit prior to the voltage application shall be the lowest temperature of the temperature category. For applications where the overload conditions following system disturbances are unknown, the following test shall be applied. The unit shall within 10 min after being removed fro
44、m the refrigerator be exposed to 1.5 UN (between terminals), and within 30 s thereafter, an overvoltage of 1.1 Uiim (but at least 2.25 UN) shall be applied without any voltage interruption for a period of five to 10 cycles after which 1,5 U, is maintained gain without any voltage interruption (figur
45、e 2. page 41). After an interval of 1,5 to 2 min at 1,s UN, another equal overvotage period shall be applied, and so on until the following number of power frequency overvoltage periods of 1.1 LIiirn have been applied (see figure 2, page 41): - 50 overvoltage cycles for protector types K and N1; - 1
46、00 overvoitage cycles for protector types L, M and N2. In the case of no overvoltage protector, each single overvoltage period shall be equal to or longer than the duration of the fault voltage Uiim before the fault is switched off or the capacitor by-passed. The capacitor shall be exposed to five o
47、vervoltage periods of this duration. After the last overvoltage period, a voltage of 1,5 UN shall be maintained for a time of 30 min. Page 21 EN 60143 : 1993 When overload conditions are known, the voltage versus time profile between the over- voltage test periods of 1.1 Uiim and the subsequent over
48、voltage test leVel(S) (.e., 1.5 UN) may be changed as agreed between purchaser and manufacturer. These revised test conditions should be based on maximum working currents (clause 4.1) and overload conditions following system disturbances (see 7.2.1 and figure 3, page 57). Before and after the test,
49、the capacitance shall be measured according to 2.3.1 and the two measurements shall be corrected to the same dielectric temperature (See 2.1.2). There shall be no significant change of capacitance for these measurements and in any case it shall be less than the change corresponding to puncture of an element or to operation of an internal fuse. When interpreting the results of the measurements, the factors stated in 2.9.2 shall be taken into account. The cold duty test may be performed on either a standard unit or on a special unit having the characte
