1、g44g40g40g40g3g54g87g71g3g38g22g26g17g23g25g140g16g21g19g20g19g3g44g40g40g40g3g54g87g68g81g71g68g85g71g3g54g83g72g70g76g191g70g68g87g76g82g81g86g3g73g82g85g43g76g74g75g16g57g82g79g87g68g74g72g3g11g33g20g19g19g19g3g57g12g3g40g91g83g88g79g86g76g82g81g3g68g81g71g38g88g85g85g72g81g87g16g47g76g80g76g87g7
2、6g81g74g3g51g82g90g72g85g3g38g79g68g86g86g3g41g88g86g72g86g68g81g71g3g41g88g86g72g3g39g76g86g70g82g81g81g72g70g87g76g81g74g3g54g90g76g87g70g75g72g86g44g40g40g40g3g51g82g90g72g85g3g9g3g40g81g72g85g74g92g3g54g82g70g76g72g87g92g54g83g82g81g86g82g85g72g71g3g69g92g3g87g75g72g54g90g76g87g70g75g74g72g68g85
3、g3g38g82g80g80g76g87g87g72g72g44g40g40g40g22g3g51g68g85g78g3g36g89g72g81g88g72g3g49g72g90g3g60g82g85g78g15g3g49g60g3g20g19g19g20g25g16g24g28g28g26g15g3g56g54g36g3g3g21g28g3g50g70g87g82g69g72g85g3g21g19g20g19g38g22g26g17g23g25g55g48IEEE Std C37.46-2010 (Revision of ANSI C37.46-2000) IEEE Standard Spe
4、cifications for High-Voltage (1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches Sponsor Switchgear Committee of the IEEE Power +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained throug
5、h the Copyright Clearance Center. Introduction This introduction is not part of IEEE Std C37.46-2010, IEEE Standard Specifications for High-Voltage (1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches. This standard is a revision of ANSI C37.46-2000, to bring it
6、up to date and in line with present day requirements for high-voltage expulsion and current-limiting power class fuses, fuse links and fuse disconnecting switches. This standard was previously developed by the NEMA High Voltage Fuse Technical Committee. As of 2003 the responsibility for this standar
7、d has been transferred to the IEEE High-Voltage Fuse Subcommittee. Liaison was maintained with the International Electrotechnical Commission (IEC) during the development of the revisions in order to incorporate the latest thinking up to the time of publication. The Switchgear Committee of the IEEE P
8、ower dielectric design tests specified in 4.1; and for fuse supports having fuse holders, the interrupting design tests specified in 4.2 b) Rated continuous current, determined by temperature-rise design tests at rated continuous current as specified in 4.4 c) Rated lightning impulse voltage basic i
9、mpulse insulation level (BIL) determined by the impulse withstand tests specified in 4.1 3.2 Ratings of fuse holders, fuse units, refill units, and fuse links for power class fuses The ratings of fuse holders, power fuse units, and fuse links for power class fuses shall be determined with tests perf
10、ormed using the usual service conditions defined in IEEE Std C37.40, except where other conditions are specified, and shall include the following: a) Rated maximum voltages, as specified in 3.3.1, and determined by the current interrupting design tests specified in 4.2 b) Rated continuous current, d
11、etermined by the temperature-rise design tests specified in 4.4 and, if applicable, in accordance with the preferred ratings listed in 3.3.3 and the time-current-characteristics specified in 5.2, 5.3, and 5.4 c) Rated frequency, as specified in 3.3.4 and validated by the design tests specified in IE
12、EE Std C37.41-2008 d) Rated maximum interrupting current and rated minimum interrupting current as follows: 1) Rated maximum interrupting current for fuse holders, fuse units, and refill units as specified in 3.3.5 and as determined by the current interrupting design tests specified in 4.2 2) Rated
13、minimum interrupting current, for backup current-limiting power fuses, as specified in 3.3.6 and as determined by the current interrupting tests specified in 4.2 6IEC publications are available from the International Electrotechnical Commission, Case Postale 131, 3, rue de Varemb, CH-1211, Genve 20,
14、 Switzerland (http:/www.iec.ch/). IEC publications are also available in the United States from the American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036, USA (http:/www.ansi.org/). 4 Copyright 2010 IEEE. All rights reserved. IEEE Std C37.46-2010 IEEE Standard Spe
15、cifications for High-Voltage (1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches Power class current-limiting fuses have three different subclasses that depend on the low-current interrupting capability of the fuse. The three subclasses are backup current-limiti
16、ng fuses, general-purpose current-limiting fuses, and full-range current-limiting fuses. Only backup current-limiting fuses have a rated minimum interrupting current. The other two types have low current capabilities as described in their definitions. Refer to IEEE Std C37.40 for the definitions of
17、these devices. 3.3 Preferred ratings and performance requirements for power class expulsion and current-limiting type fuses and fuse disconnecting switches 3.3.1 Rated maximum voltage The preferred rated maximum voltages for future designs of power class fuse supports, fuse disconnecting switches, f
18、use units, refill units, and fuse links shall be 2.8 kV, 5.5 kV, 8.3 kV, 15.5 kV, 17.2 kV, 23.0 kV, 27.0 kV, 38.0 kV, 48.3 kV, 72.5 kV, 121.0 kV, 145.0 kV, and 169.0 kV. The preferred rated maximum voltages for designs of power class fuse supports, fuse disconnecting switches, fuse units, refill uni
19、ts, and fuse links now being manufactured and in use shall be 2.8 kV, 5.5 kV, 8.3 kV, 15.5 kV, 17.0 kV, 17.2 kV, 25.8 kV, 38.0 kV, 48.3 kV, 72.5 kV, 121.0 kV, 145.0 kV, and 169.0 kV. Presently some R-rated fuses (see 5.1) have maximum voltages of 2.54 or 5.08 (5.1) kV and some indoor fuses and disco
20、nnecting switches are rated 15.0 kV maximum. The rated voltage of a power class fuse support and a fuse disconnecting switch shall correspond to the rated voltage of either the fuse unit or the supporting insulator unit, whichever is lower. 3.3.2 Rated continuous current for power class fuse support
21、s and fuse disconnecting switches The preferred rated continuous current for power class fuse supports and fuse disconnecting switches shall be 10 A, 25 A, 100 A, 200 A, 300 A, 400 A, 450 A, 600 A, 700 A, and 720 A. 3.3.3 Rated continuous current for power class fuse units, refill units, and fuse li
22、nks The preferred rated continuous current for power class fuse units, refill units, and fuse links, including those that are E-rated (see 5.1) and those of other manufacturer-defined TCC specifications, shall be 0.5 A, 1 A, 2 A, 3 A, 5 A, 7 A, 10 A, 15 A, 20 A, 25 A, 30 A, 40 A, 50 A, 65 A, 80 A, 1
23、00 A, 125 A, 150 A, 200 A, 250 A, 300 A, and 400 A. R-rated fuses are designated by the use of an “R” number and are not assigned a rated continuous current. IEEE Std C37.40 defines allowable continuous current as the current a fuse shall be capable of carrying, without exceeding the total temperatu
24、re limits and maximum temperature rise values specified in IEEE Std C37.40. When an allowable continuous current is specified for a fuse, it is normally the maximum current the fuse can carry continuously. Table 1 specifies the minimum allowable continuous current each fuse shall be capable of carry
25、ing, without exceeding the specified total temperature in IEEE Std C37.40 for each R-rated fuse. The maximum continuous current for each R-rated fuse may be somewhat higher than this minimum value. This current is specified for two ambient temperature conditions as shown in Table 1. 5 Copyright 2010
26、 IEEE. All rights reserved. IEEE Std C37.46-2010 IEEE Standard Specifications for High-Voltage (1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches Table 1 Minimum allowable continuous currents for R-rated power class fuses Fuse designationsaAllowable continuous
27、current (A) At 55 C ambient At 40 C ambient 1.5R 36 40 2R 63 70 3R 90 100 4R 115 130 5R 135 150 6R 150 170 9R 180 200 12R 210 230 18R 350 390 24R 400 450 26R 430 480 30R 490 550 32R 540 600 36R 580 650 38R 630 700 a Fuses above 38R are available. Since these are special designs consult the manufactu
28、rer for continuous current values. 3.3.4 Rated frequency The preferred rated frequency for power class fuses shall be 50 Hz, 60 Hz, or both. 3.3.5 Rated maximum interrupting breaking current The preferred rated maximum interrupting currents for power class fuses in rms symmetrical kiloamperes shall
29、be in accordance with Table 2. Table 2 Preferred rated maximum interrupting currents for power class expulsion and current-limiting type fuses and fuse disconnecting switches Maximum rated voltage (kV)aRated maximum interrupting currents (kA rms symmetrical)b2.54 to 2.80 31.5 40 50 63 80 5.08 to 5.5
30、0 31.5 40 50 63 80 8.3 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 63 80 15.0 to 17.2 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 63 80 23 to 27 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 63 80 38 5 6.3 8 10 12.5 16 20 25 31.5 40 50 63 80 48.3 3.15 4 5 6.3 8 10 12.5 16 20 25 31.5 72.5 2.5 4 5 6.3 8 10 12.5 16 20 25
31、121 1.25 2.5 4 5 6.3 8 10 12.5 16 145 1.25 2.5 4 5 6.3 8 10 12.5 169 2.5 4 5 6.3 8 10 12.5 aSee 3.3.1. bRated maximum interrupting currents are selected from the R10 series of preferred numbers. The R10 series is comprised of the numbers 1, 1.25, 1.60, 2.00, 2.50, 3.15, 4.00, 5.00, 6.30, 8.00, and t
32、heir multiples of 10. Should manufacturers develop fuses in excess of 80 kA, the preferred ratings shall correspond to the continued R10 series of numbers. 6 Copyright 2010 IEEE. All rights reserved. IEEE Std C37.46-2010 IEEE Standard Specifications for High-Voltage (1000 V) Expulsion and Current-Li
33、miting Power Class Fuses and Fuse Disconnecting Switches 3.3.6 Rated minimum interrupting breaking current for backup current-limiting fuses The rated minimum interrupting current for backup current-limiting power class fuses shall be designated by the manufacturer. 3.3.7 Rated maximum application t
34、emperature The rated maximum application temperature is the maximum ambient temperature at which the device is suitable for use. The device must be capable of withstanding this temperature without any deterioration that would inhibit its ability to properly interrupt the circuit. The minimum rating
35、allowable is 40C. The rated maximum application temperature of the device in C shall be preferably selected from the R20 series of preferred numbers (typically 40, 45, 50, 56, 63, 71 etc.). The R20 series is comprised of the numbers 1, 1.12, 1.25, 1.40, 1.60, 1.80, 2.00, 2.24, 2.50, 2.80, 3.15, 3.55
36、, 4.00, 4.50, 5.00, 5.60, 6.3, 7.10, 8.00, 9.00, and their multiples of 10. 3.3.8 Rated lightning impulse voltage basic impulse insulation level (BIL) The preferred rated lightning impulse voltage level of power class fuse supports and fuse disconnecting switches shall be as specified in Table 3 for
37、 outdoor devices and Table 4 for indoor devices. Table 3 Preferred rated lightning impulse voltage and minimum dielectric withstand test voltages for outdoor power class expulsion and current-limiting type fuse supports and fuse disconnecting switches Rated maximum voltage (kV, rms)aRated lightning
38、impulse voltage (kV peak) Minimum dielectric test voltages Terminal-to-ground for all devices and pole-to-pole (phase-to-phase) for multipole devices Terminal-to-terminal Power-frequency dry test, 1 min (kV, rms) Power-frequency wet test, 10 s (kV, rms)bImpulse test, 1.2 s 50 s (kV, peak) Power-freq
39、uency dry test, 1 min (kV, rms) Impulse test, 1.2 s 50 s (kV, peak) 8.3 95 35 30 95 39 105 15.5 to 17.2 110 50 45 110 55 121 23.0 to 27.0 150 70 60 150 77 165 38.0 150 70 60 150 77 165 38.0 200 95 80 200 105 220 48.3 250 120 100 250 132 275 72.5 350 175 145 350 193 385 121.0 550 280 230 550 308 605
40、145.0 650 335 275 650 368 715 169.0 750 385 315 750 424 825 aSee 3.3.1 bPower-frequency wet withstand test voltages on the insulators that meet these values will be satisfactory in lieu of this test, provided the design of the complete device does not decrease the power-frequency withstand test volt
41、ages of the insulators. 7 Copyright 2010 IEEE. All rights reserved. IEEE Std C37.46-2010 IEEE Standard Specifications for High-Voltage (1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches Table 4 Preferred rated lightning impulse voltage and minimum dielectric wi
42、thstand test voltages for indoor power class expulsion and current-limiting type fuse supports and fuse disconnecting switches Rated maximum voltage (kV, rms)aRated lightning impulse voltage (kV peak) Minimum dielectric test voltages Terminal-to-ground for all devices and pole-to-pole (phase-to-phas
43、e) for multipole devices Terminal-to-terminal Power-frequency dry test, 1 min (kV, rms) Power-frequency dew test, 10 s (kV, rms)b,c,dImpulse test, 1.2 s 50 s (kV, peak) Power-frequency dry test, 1 min (kV, rms) Impulse test, 1.2 s 50 s (kV, peak) 2.54 to 2.8 45 15 10 45 17 50 5.08 to 5.5 60 19 15 60
44、 21 66 8.3 75 26 24 75 29 83 15 to 17.2 95 36 26e95 40e105 15.5 to 17.2 110 50 30 110 55 121 23 to 27 125 42e28e125 47e138 23.0 to 27.0 150 60 40 150 66 165 38.0 150 70 40 150 77 165 38.0 200 95 80 200 105 220 aSee 3.3.1. bPower-frequency dew withstand test voltages on the insulators that meet these
45、 values will be satisfactory in lieu of this test, provided the design of the complete device does not decrease the power-frequency withstand test voltages of the insulators. cWhen FEPs use a liquid or a gas other than air for its dielectric medium, the dew test is not required. dWhen FEPs use air f
46、or the dielectric medium, multipole devices require dew tests pole-to-pole only when there is a solid-type insulation between the poles. eThese are historical values that while inconsistent with other values in this table have been applicable to devices that have been in use for more than 40 years.
47、These are being studied to see if they can be revised for the next revision of the document. 3.3.9 Performance requirements 3.3.9.1 Performance requirements of power class fuse supports and fuse disconnecting switches The preferred performance requirements of power class fuse supports and fuse disco
48、nnecting switches shall include the following: a) Power-frequency dry-withstand voltages for outdoor and indoor power class fuses, as specified in 4.1 b) Power-frequency wet-withstand voltages for outdoor power class fuses, as specified in 4.1 c) Power-frequency dew-withstand voltages for indoor pow
49、er class fuses used in FEPs as specified in 4.1 d) Lightning impulse withstand voltages for outdoor and indoor power class fuses, as specified in 4.1 e) Temperature rise limitations as specified in 4.4. f) Radio-influence voltage, as specified in 4.3 8 Copyright 2010 IEEE. All rights reserved. IEEE Std C37.46-2010 IEEE Standard Specifications for High-Voltage (1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches 3.3.9.2 Performance requirements of fuse units, refill units, and fu
