【经验】分步教你如何为电路选择合适的保险丝
保险丝是一种保护电路的电子元器件,它通常串联在电路中,在故障电流增大到一定数值时,其自身熔断而切断电路,达到保护电路或者其它电子设备的目的。在电路过电流保护组件中最常用的就是保险丝。然而在实际应用,很多工程师经常会为如何选择合适的保险丝而烦恼。本文将结合LITTELFUSE的保险丝产品,分步教你如何为电路选择合适的保险丝产品。
首先需要掌握电路以下参数:
最大工作电流:保险丝在正常使用过程中流过的最大电流;
正常工作电压:保险丝保护的线路电压等级,也是保险丝打开后必须安全制程的电压;
最大故障电流:决定了保险丝必须满足的中断额定值(断开容量);
电流脉冲参数:这些是短时间脉冲,比如干扰、涌流等,此时保险丝是不应该打开;
环境温度:保险丝工作时的周围区域温度;
掌握以上参数,我们就可以开始进行保险丝的选型:
第一步计算出额定工作电流In,In=IR/(Frf×Tdf),
IR为最大负载电流;
Frf为电流额定因素,它和认证标准有关,UL标准下为0.75,IEC标准下为1;
Tdf为温度折减率,环境温度对保险丝的影响很大,高温下保险丝额定电流能力下降;
以上内容可以参考链接:https://www.sekorm.com/news/92566460.html;
以电路最大电流0.5A,工作电压24V,环境温度40℃为例,由图1可知,Littelfuse的保险丝温度折减率在40℃为0.95,电流额定因素为0.75,计算In=0.5/(0.75×0.95)=0.7A;实际选型我们需要选择比额定值略大的电流值,此处我们选择0.75A;
图1 保险丝额定电流的温度折减率曲线图
第二步,计算出融化热能值I2t,需要了解脉冲相关参数,由图2可知对应的脉冲I2t值,以最大电流0.5A时峰值电流1.5A为例,方波脉冲周期为0.001S,可以计算得出脉冲I2t值=1.52×0.001S=0.00225A2S。
图2 不同脉冲波形对应的脉冲I2t值计算示意图
第三步,根据应用领域不同,需要确定最终脉冲额定因数,有图3知,在不同的脉冲系列情况下,I2t的脉冲额定因数都是不相同的,以100000脉冲为例,脉冲额定因数为22%,可以计算出最终的融化热能值I2t=0.00225A2S/0.22=0.0102 A2S。
图3 脉冲额定因数与脉冲序列关系图
最后,根据额定电流0.75A,工作电压24V,融化热能值I2t为0.0102 A2S,结合Littelfuse的保险丝选型手册,推荐435系列保险丝,结合选型参数表,如图4所示,推荐型号0435.750KR。
图4 Littelfuse 435系列保险丝参数表
结合以上,可以清楚的了解保险丝的选型步骤和注意事项,如有其它疑问,欢迎在世强电商平台留言。
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型号- PV-1A10F,FNA-2-1/4,FWA-300B,FNA-2-1/2,170M3317,TD3-D,170M3316,170M3319,GBB-7-R,170M3318,170M3313,170M3312,TPA-B-30,170M5974,170M3315,170M5975,170M3314,170M5972,170M5973,_CIF21,170M5970,170M3311,ABC-1/2-R,170M5971,170M3310,CH142DU,CHM3DU,KLU-800,FWC-4A10F,DOOR-508,40FE,170M5989,170M4658,170M4659,170M5987,170M5988,170M5985,170M5986,HLQ SERIES,170M5983,170M3320,FRS-R-400,170M5984,170M5981,170M5982,170M3321,170M5990,170M4660,NTN-R-400,100LET,FRS-R-40*,40ET,5BCLS,GMD-600-R,FWH-125B,TCF40RN,BBS-3/4,JJN-600,170M5958,170M5959,170M5956,BRKT-FLT,170M5957,170M5954,_CIF06,170M5955,170M5952,CCP2RL-—-30M,170M5953,KRP-CL-300,RD40-3-508,15CLPT-_M-B,15CLPT-_M-A,FWH SERIES,FWX-1A14F,LPS-RK-8/10SP,FNA-6/10,C519-—-R,170M3309,KTK-R-1/10,170M5969,C5268-—,FWJ-2000A,KDD 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【选型】Littelfuse(力特)保险丝电路保护器件选型指南
目录- 保险丝特性/术语/考量因素 选择清单 标准 包装/零件编号 免责声明 表面贴装保险丝 径向引线型保险丝 轴向引线型和管式保险丝 管式保险丝座 特殊应用保险丝
型号- 45302.5,0977016.XEP,03540903ZXGY,0154.125,03540821ZXBL,0482 0007ZXB,03540911ZXGY,01550009ZXA,111 501,111 505,111 506,0454003.,0454001.,01550009ZXU,3453HS3-010,03540001ZXGY,800,801,03540806ZXGY,802,454007,803,804,454005,454004,0477016.XEP,454003,0454002.,807,808,0482 0019ZXB,015401.6,015401.5,0100 0054,208 000P,0977.800XEP,0216 000XP,154.315,820 20,0453.250,0215.125XEP,345 101,225 000P,810,811,640 0000 1603,813,814,815,816,0482 0007ZXP,559 0000 00 01,0154.375,0275025.,121004,282008,65800001XXX,121001,282007,820,121002,821,282002,0100 0058,823,824,282001,0100 0056,3453LF2-010,03540912ZXGY,154.375,0216.800XEP,03540807ZXGY,100 058,0453002.,0453.080,100 054,100 056,01550114ZXA,830,03540902ZXGY,831,0281 0008H,0107 0002,853 0000 1009,834,0454007.,835,837,0477.800XEP,279 000,154.125,0106 0001,216SP,800 01,0154.315,101001,0482 0001ZXPF,0215001.XEP,0453003.,0482 0019ZXP,562 0000 1009,3453HS4-010,01550114ZXU,454002,454001,015403.5,453.062,02450002X,3453LF1-010,65800003XXX,0154.100,850,0482 0009ZXB,851,852,853,855,856,0454005.,02450002H,129 002,0213 000P,129 001,01550020ZXA,0100 0020,0482 0020ZXB,314 000P,866 0000 1009,02450001X,0453001.,15403.5,3453LF1-020,0281 0007H,0482 0020ZXP,0453.062,154.750 T,860,862,865,03540010ZXGY,866,837 0000 0005,02450001H,01550020ZXU,0454004.,0520 0005 ZXGY,313 000P,824 0000 0005,125002,125001,0213 000 XEP,870,03540808ZXGY,874,875,876,877,PICO 259,0217.315 XEP,3453LF4-010,0154.750,0453007.,649 0000 3039,0285.125 XRP,127 002,0281 0005H,640,816 0000 0005,655 0000 0405,400,646,648,649,0482 0015ZXP,127 001,0482 0009ZXBF,0217.400 XEP,815 0000 0005,342 058,52100001009,830 0000 0005,0453004.,01550104ZXU,0482 0002ZXPF,652,653,0482 0005ZXB,655,0482 0010ZXPF,656,101002,658,101003,646 1200 7113,659,01550104ZXA,03540011ZXGY,451.1,03540901ZXGY,0453005.,342 048,660,824 0000 0205,429,0215020P,0482 0017ZXB,649 0000 1039,435,437,438,659 0000 0009,0482 0005ZXP,0451.062,440,441,443,202,203,445,254 121,446,688,447,448,449,208,209,646 1200 7123,154001. T,0482 0003ZXPF,0154.500,0453008.,824 20,451,452,453,0520 0001,354 101-GY,454,213,456,215,03540012ZXGY,458,216,459,217,218,453.1,453.2,03540809ZXGY,453.8,453.5,0520 0004 Z,453.4,460,3453LF3-010,461,0451.080,312 000,462,220,464,465,0482 0008ZXBF,466,224,467,225,468,469,254 101,229,800 0000 0105,0482 0017ZXP,560 0000 13 19,01000020Z,471,230,472,0101 0001,473,232,233,0356 0011Z,234,477,235,239,125 001,125 003,570 0000 0001,125 002,0445 0001,03540601ZXGY,154002. T,109 002,345_ISF,02200029MXP,0281 0001,109 001,481,482,0101 0002,242,485,0101 0003,0482 0016ZXBF,04533.15,245,0356 0010Z,0215020.XEP,01550004ZXA,102064,345 101-010,0482 0002ZXB,0482 0002ZXP,03540005ZXGY,803 01,251,494,253,254,0122 055Z-1,348 677,354 700,01550004ZXU,348 671,03540101ZXGY,0482 0019ZXPF,15401.5 T,03540906ZXGY,3453QS2-010,0216.050XEP,345 101-020,03540803ZXGY,262,102071,263,265,266,267,268,520 001,269,520 003,520 004,PICO 259-UL913,0482 0007ZXBF,0235006.XEP,0482 0004ZXPF,0218 000P,272,030,273,274,03540602ZXGY,275,154.8,262 000,278,0239 000P,279,505 000P,0453.630,154.1,0154007.,0482 0014ZXP,154.5,154.4,154004. T,155 100,154.2,3453QS8-010,01550014ZXA,340 313,0482 0014ZXB,281,282,01550120ZXU,340 312,285,286,155 004A,348 600,04611.25,0453.400,852 0000 1009,01550120ZXA,045306.3,0281 0008 H,1541.25,268 000,811 0000 0005,01500145HXB,01550014ZXU,0482 0017ZXBF,348 877,155 114A,0218.032 XEP,3453QS3-010,278 000,348 871,640 0000 1003,658 0000 1109,0482 0001ZXBF,03540004ZXGY,155 004U,220 000P,58300000005,831 0000 0005,0482 0006ZXBF,451.125,03540907ZXGY,0482 0005ZXPF,155 006A,0154008.,03540802ZXGY,155 114U,00300210M,155 006U,850 0000 1009,0254 0002Z,344 125,658 0000 4009,0482 0010ZXP,045402.5,01550109ZXU,03540905ZXGY,0154003.,0482 0010ZXB,3453LF8-010,01550006ZXU,00300210N,3453QS7-010,0254 0003Z,0232 000P,03540003ZXGY,0482 0002ZXBF,0482 0009ZXP,0154002.,348 800,0482 0009ZXPF,0154.080,0453.200,3453RF8-010,01550100Z,0359 0010Z,315 000P,03540603ZXGY,3453HS1-010,02810001H,520_W,332 000P,224 000P,66000001009,508 000P,0154005.,0477.500XEP,325 000P,155 009A,3453QS4-010,0359 0011Z,0482 0018ZXBF,0254 0001Z,453.315,851 0000 1009,155 009U,15401.6,286 377,15401.5,0482 0021ZXPF,45403.5,0154004.,01550109ZXA,0359 0012Z,653 0000 0405,0482 0008ZXPF,154.375 T,3453LF7-010,454.375,0216001.XEP,835 0000 0005,322 000P,03540805ZXGY,345 121,658 0000 3109,652 0000 0405,03540002ZXGY,266 000,0275030.,154L,02200019MXP,03540604ZXGY,045302.5,281010,03540904ZXGY,208 000EP,0482 0003ZXBF,453.75,45303.5,0216016.XEP,0482 0020ZXPF,0154001.,3453HS2-010,354 900,281007,154T,281008,281005,0482 0012ZXB,0482 0012ZXP,640 0000 1403,03540804ZXGY,51800001009,453.63,0482 0019ZXBF,0356 0012Z,45401.5,0154.062,834 0000 0005,01550006ZXA,0217015 XEP,453.125,344 400,015402.5,0218.125 XEP,0254 0204Z,344 405,230 000P,344 402,0482 0007ZXPF,344 401,0453.160,344 404,344 403,0482 0004ZXBF,0233 000P,0482 0018ZXP,0154.250,0482 0015ZXPF,265 000,354 000,209 000EP,801 0000 0005,453.08,640 0000 1503,0520 0101 Z,03540008ZXGY,0482 0018ZXB,0254 0205Z,810 0000 0005,571 0000 0001,
Littelfuse(力特)应用于乘用车的保险丝选型指南
目录- AUTOMOTIVE FUSES Product introduction BLADE FUSES CARTRIDGE FUSES HIGH CURRENT FUSES SMD FUSES CABLE/PAL FUSES HIGH VOLTAGE FUSES Shunts/Diodes/Resistors Fuse General knowledge
型号- 0998150._,142.5631.6202,0695040.PXPS,0297015._,0895020_,0HEV040.XXX,0898300._,0HEVXXX.ZXPCB,157.5701.5401,10EVXXX.ZXPY,142.7010.XXXX,0337010._,0298150.ZXEH-LT,0898225._,0299040._,142.5395.6172,SHEV080.ZXBD,0888250._,157.5701.5631,0297004._,0297900._,0899025.Z,0999060._,157.5916.6101,283 SERIES,153.XXXX.580_,0898060._,156.5610.570_,10EV020.XXX,4998100.M_,0498060._,142.7010.6102,0317030.M,3298350.H,3998425._,0999070._,0895030_,0498XXX.MXM6,0888XXX.U-1M6,0888XXX.U-1M8,0498070._,156.5611.5301,157.5916.XXX1,3998500._,099707.5_,05980016Z-CN,0317020.M,0299XXX.ZXNV,4998030.M_,0327005._,3998250._,0997XXX.WXN,0297003._,3298XXX.ZXM10,142.5395.6152,153.1612,153.XXXX.570_,157.5916.6201,157.5916.5351,156.5610.560_,0891005._,0998500._,157.5701.6501,10EVXXX.ZXPCB,3998175._,142.7010.6122,0695015.PXPS,0287040._,0898400._,0327015._,0299XXX.ZXT,0298XXX.ZXEH,155.0892.5501,0298250._,153.3502,0899035.Z,0895040_,0299050._,0998175._,0298175._,3998160._,157.5916.6251,157.5916.6131,156.5677.530_,153.0000,10EVXXX.ZXBDP,0891XXX.NXS,0287030._,0HEV015.XXX,3298250.H,0298175.ZXEH-LT,0287XXX.U,4998XXX.M-1M6,157.5701.6401,20EV070.ZXBDM,0287XXX.H,156.5611.6101,0287XXX.L,3298250.Z,0998250._,0HEVXXX.ZXPCBL2,153.XXXX.620__,0888XXX.U-NH,0498XXX.MXT,10EVXXX.ZXISO,02400094,0895050_,02400120P,3298175.Z,05980015Z-CN,153.2512,294 SERIES,0498125._,0298125.ZXEH-UL,20EV100.ZXBDM,156.5611.XXX1,3298175.H,0498XXX.MXT-CN,3298350._,156.5677.540_,SHEVXXX.ZXBD,0498200._,0327003._,0317XXX.M,3998600._,157.5700.5801,0337XXX.PX2S,157.5917.5801,157.5701.6421,156.5677.550_,0297XXX.WXNV-CN,157.5701.6301,0299060._,0999080._,0297005._,153.2502,153.0010.XXX2,157.5916.6121,0695020.PXPS,0498080._,156.5610.580_,0298350._,0495900.Z,155.0892.5751,3998150._,142.7010.6202,0495900.X,142.5631.5302,157.5700.5631,153.XXXX.6502,0898150._,3298900._,0298500._,0299XXX.TXN,153.7000.XXX2,153.XXXX.540_,3298900.Z,4998125.M_,157.5701.6331,157.5917.6101,156.5610.530_,0298150._,142.5395.6102,142.5395.6222,0298100.ZXEH-UL,3298125.Z,0HEVXXX.ZXPY,0695060.PXPS-HT,4998XXX.M-M6,3298125._,0327025._,157.5700.5501,0HEV030.XXX,0998350._,0495XXX.ZXA,4998080.M_,157.5701.6201,157.5917.6231,3298125.H,157.5917.6351,156.5677.560_,3298080.H,0495025_,157.5701.5351,3298080._,0898500._,3298XXX.Z,3298080.Z,155.0892.6101,0337003._,0HEV050.XXX,0287020._,3298500.ZXSTA,3298XXX.H,142.0020.XXXX,02400112P,0297010._,0695040.PXPS-HT,3298200.H,157.5917.6121,156.5611.6111,0HEVXXX.ZXISO2,153.XXXX.530_,157.5701.6351,0299070._,157.5701.XXX1,0298275.ZXEH-LT,157.5701.6231,142.5395.6202,0HEV010.XXX,155.0892.6251,0287010._,157.5916.5501,SHEV060.ZXBD,153.XXXX.6402,3298200._,0HEVXXX.ZXC,3298200.Z,4998200.M_,142.5631.6152,02400111P,0999040._,153.5631.XXX2,157.5701.6101,4998XXX.M-NH,153.5631.XXX1,157.5917.6251,0695XXX.PXP,031707.5M,20EV080.ZXBDM,156.5611.6121,0498100._,0899060.Z,882-853,882-854,155.0892.6121,157.5916.5631,3998070._,157.5700.6401,142.5631.6122,0998XXX.UX-2M8,0898175._,157.5701.6131,153.1602,157.5701.6251,0999050._,153.XXXX.560_,0998XXX.UX-2M6,155.0892.XXX1,3298100._,0327900._,0298XXX.UX1M8,0299080._,3298100.Z,0998450._,0498XXX.MXTM6-CN,0297002._,0895025_,157.5917.6151,156.5677.580_,0297025._,0891030._,142.5395.6252,3998225._,157.5701.6121,156.5610.550_,157.5917.6161,3298100.H,157.5917.6281,02400113P,10EVXXX.ZXPCBL,155.0892.6301,0998XXX.UX-NH,0298XXX.UXT,157.5700.6501,0337900._,142.7010.6152,0298040._,157.5701.6151,0287001._,3998300._,142.5631.6102,157.5701.6271,0498XXX.M-CN,0327010._,032707.5_,3998400._,0998XXX.UX-1M8,0498XXX.MXM6-CN,153.XXXX.550_,156.5611.6151,0997004_,0695025.PXP,0998XXX.UX-1M6,142.5395.6122,153.7010.XXX2,157.5917.6171,029707.5_,0287035._,3998XXX.ZXM10,157.5700.5401,294C SERIES,0327XXX.LXS,02400103_,0997005_,033707.5_,157.5701.6141,156.5610.540_,3298600.ZXSTA,293 SERIES,028707.5_,0891XXX.U,0898250._,142.5395.XXXX,0891XXX.H,155.0892.6201,SHEV150.ZXBD,02400115P,142.5631.XXXX,0317010.M,4998150.M_,0287002._,0287025._,157.5701.6171,32980001ZXM8,157.5917.6501,0695XXX.PXP-HT,0298060._,4998060.M_,0997002_,156.5610.611_,0891020._,0495040_,142.7010.5802,3998900._,20EV125.ZXBDM,157.5916.5801,0317900.M,153.XXXX.6222,157.5700.5351,0HEVXXX.ZXP2Y,02400106P,153.XXXX.6102,02400118P,876-199,157.5700.6201,3998125._,02400105Z,0298250.ZXEH-LT,157.5701.6161,0895XXX.T,0298300._,0895XXX.U,0695025.PXPS,153.XXXX.610_,0998100._,0899040.Z,156.5610.612_,0997003_,0997015_,SHEV100.ZXBD,0317015.M,0297030._,142.5631.5802,902-192,0287003._,0HEVXXX.ZXPCB2,0297XXX.WXT,3298400._,0297XXX.WXNV,0891XXX.NXWS,156.5610.625_,0899030.Z,0899XXX.Z,0299025._,3998200._,142.7010.5702,0495050_,0HEVXXX.ZXPCBL,153.XXXX.6122,0317005.M,2938 SERIES,0895XXX.Z,157.5700.6301,02400108P,157.5700.6421,0495XXX.UXA,3998080._,10EV040.XXX,3298400.ZXSTA,153.XXXX.612_,0898350._,0327020._,3298060.H,0997025_,0297XXX.H,3298400.H,0888300._,3298060.Z,0297XXX.L,SHEV070.ZXBD,05980020Z,153.XXXX.6252,0695050.PXPS,0298XXX.ZXEH-UL,02400107P,0297XXX.U,153.0020.XXX2,0287004._,0327030._,0298XXX.ZXH,0997010_,0298XXX.UXP-1M8,0298XXX.UXP-1M6,0498XXX.MXTM6,0498175._,153.5395.XXXX,157.
【选型】Littelfuse(力特)保险丝座选型指南
目录- Fuse Characteristics, Terms and Consideration Factors Fuse Selection Checklist PTC Characteristics and Terms PTC Product Applications Typical PTC Circuit Protection Designs Fuse Standards Fuse and PTC Products Selection Guide Fuse Packaging and Part Numbering
型号- 1812L,471,230,472,473,232,233,234,235,477,874,875,876,239,877,2016L,461E,485,LORHO,400,157T,369,804,807,808,600R,437 SERIES,USBR,370,251,372,373,494,253,374,2205,SL,0603L,0805L,ST,382,262,383,263,385,265,266,267,268,269,303,429,1210L,LR,LT,391,1206L,392,272,273,274,395,154,275,396,397,398,157,278,399,219XA,279,312,950,313,30R,159,314,435,315,437,438,318,LORHO PTC,160,285,440,250S,441,250R,322,443,202,203,324,VL,325,446,326,447,448,449,208,209,VT,16R,451,452,332,453,154T,454,213,456,215,72R,216,458,60R,217,459,218,977,460,461,220,462,464,465,224,466,225,467,468,501,469,229,505,506,2920L,508
【元件】LITTELFUSE推出行业首创超大电流SMD保险丝系列,提供150A和200A额定电流规格
LITTELFUSE近日宣布推出871系列超大电流SMD保险丝,这一创新系列是对881系列的补充,提供150A和200A保险丝额定电流,是对881系列125A最大额定电流的重大升级。871保险丝系列为电子设计人员提供单保险丝、表面安装解决方案,无需并联保险丝配置。
产品 发布时间 : 2024-10-09
开关电源中,如何选用保险丝的电流?
一是看电路的最大持续工作电流,二是看工作环境温度,三是所选保险丝的认证情况,比如UL认证的保险丝折减率是75%。保险丝的额定电流=电路最大持续工作电流/(温度折减率*保险丝认证折减率),举个例子,电路的最大持续工作电流为2A,工作温度最大为80℃,对应保险丝的温度折减率为88%,UL认证,2A/(0.88*0.75)=3.03A,则所选保险丝的额定电流应大于3.03A。Littelfuse作为保护器件的大品牌,保险丝种类丰富,认证齐全,可以在平台搜索了解详情,有具体需要可以提选型帮助,保险丝不光只看电流的。
技术问答 发布时间 : 2019-12-12
【技术】Littelfuse解析保险丝及其应用注意事项
保险丝作为过流保护器件,在电子行业得到普遍应用,存在感非常强,却又那么不起眼,只要不是全新的设计方案,只要没出问题,经验的沿用以至于很多硬件工程师对于保险丝的参数与选型不明所以。Littelfuse浅显易懂地讲述保险丝及其应用注意事项,供有需人士参考。
技术探讨 发布时间 : 2022-08-31
294C Series PAL Fuses – Rated 32 V DC Fuse Datasheet
型号- 294C,0294080._,0294060._,0294100._,0294050._,0294020._,294C SERIES,0294120._,0294XXX.MXJ-C
【产品】紧凑型OMNI-BLOK®保险丝座254系列,配有增强型保险丝夹,独特设计可自动对准保险丝盖
254系列是Littelfuse公司推出的紧凑型OMNI-BLOK®保险丝座,与2AG保险丝搭配使用。254系列设计有焊接型端子、Q.C.端子或PCB板安装型端子可供选择,而针对PCB板安装又提供了正常环境下使用的镀锡黄铜端子或腐蚀性环境中使用的镀锡铍铜端子。此外,254系列保险丝座标配有增强型保险丝夹,这充分保证了器件稳定性和安全性,可用于保护电路、电池盒、车辆等领域。
新产品 发布时间 : 2019-03-21
Fuse Holders-High Currrent: Bolt-down Fuse Holders-Fuse Holder for MEGA ® Style Fuse
型号- 02981001ZXT,0298907-040,0298907-030
BLADE Fuse CARTRIDGE Fuse BOLT DOWN Fuse ZCASE Fuse MASTERFUSE Fuse Selection Chart
型号- 0299***.ZXT,3298***,0888***,4998***.MXISO,153.7011.***,142.5395****,0298***,0891***.NXWS,0695***.PXPS,0898***,0998***.UXISO,0297***.WXNV,0895***.Z,0878450,0899****.Z,0498***.MX1M6-IH,0698***,0998***,0999***.ZXN,153.5395.***,0299***,0327***.YXT2,0695040.PXP-HT,0287***.PXCN,0891***.NXS,0899****.ZXR,0297***.WXT,0498***,4998***,0298***.UXT,142.***,0287***.PXS,0598***,0297***.U,0695***.PXPS-HT,0495***,0891***.U,0327***,153.***.***,0997***.WXN,0695***.PXP,0297***.H,0298***.ZXEH-UL,3998***.ZXM10,0297***.L,0337***,3298***.ZXM10,0891***.H,0298***.***LT
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