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参数资料
| 型号： | 12.5URD70TTF0063 |
| 厂商： | MERSEN |
| 元件分类： | 保险丝 |
| 英文描述： | VERY FAST BLOW ELECTRIC FUSE, 63A, 1250VAC, 100000A (IR), INLINE/HOLDER |
| 文件页数： | 11/12页 |
| 文件大小： | 718K |
| 代理商： | 12.5URD70TTF0063 |
D 85
D
PSC
1250/1300VAC SEMICONDUCTOR PROTECTION FUSES
Correction factor to determine clearing
I2t value for a fuse operating below its rated voltage
Example:
Fuse 350 A in size 30
Ip = 10,000A U = 500V
At 660 V
I
2t t =80,000 A2s Tt = 6 ms
At 500 V
I
2t t = 80,000 x 0.72 = 57,600 A2s
Tt = 6 x 0.72 = 4.3 ms
*curve for fuses page 278 with P
2t published at 850VAC
Above: Correction factor to determine watts loss value of a fuse
operating below its rated current.
Above: Determines the peak ars voltage across the fuse terminals
as a function of applied voltage.
Clearing I2t vs. Operating Voltage
Watts Loss vs. Rated Current
Maximum Arc Voltage vs. System Voltage
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