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参数资料
| 型号： | 12.5URD70TTF0050 |
| 厂商： | MERSEN |
| 元件分类： | 保险丝 |
| 英文描述： | VERY FAST BLOW ELECTRIC FUSE, 50A, 1250VAC, 100000A (IR), INLINE/HOLDER |
| 文件页数： | 3/12页 |
| 文件大小： | 718K |
| 代理商： | 12.5URD70TTF0050 |
PSC
1250/1300 (2X72) SEMICONDUCTOR PROTECTION FUSES
D 88
Time-current characteristics
Above, left: Curves idicating pre-arcing time for each rated
current as a function of RMS value of pre-arcing current I.
- Tolerances on this current
8%.
- Beyond 30 sec or 10 sec, small overloads must be eliminated
by another device
- Curve CC’ represents the maximum times taken by the
associated device to clear small overloads; only its horizontal line
is represented. Its oblique line must be plotted according to
sketch, top right corner.
- The intersection of the fuse and CC’ curves indicates the
minimum breaking current Ipm of the fuse.
-
+
Maximum values of total operating I
2t
and total operating times
Left: Horizontal curves indicating the maximum values of total
operating I2t (I2tt) as function of the prospective current Ip at 660
V, cos w = 0.15.
The oblique lines indicate the corresponding total operating time
Tt, with pre-arching time in brackets.
Melting Time Current Data
Peak let thru Current Data
Clearing I
2t Data
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