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2009R1C8.25S PDF预览

2009R1C8.25S

更新时间: 2024-01-21 12:44:17
品牌 Logo 应用领域
力特 - LITTELFUSE 电机控制器过载保护继电器
页数 文件大小 规格书
10页 564K
描述
“R” 级保险丝为中等电压电机、电机控制器和相关电路提供必需的短路保护。 这些组件吸收大短路电流的能力有限。 中等电压电机控制器带有一个过载继电器,可为电机提供过载保护和锁定转子保护。 控制器还可

2009R1C8.25S 数据手册

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POWR-GARD® Fuse Datasheet  
E-RATED MEDIUM VOLTAGE FUSES  
Description  
Characteristics  
E-rated fuses have time current characteristics designed to  
provide current-limiting protection for power transformers,  
potential transformers, power centers, feeder centers, and  
unit sub stations. When properly applied, they can protect  
against high and low fault currents.  
Voltage Ratings  
Current Range  
2,750 V – 38,000 V  
10E – 600E  
Options  
• Hermetically sealed for use in hazardous locations  
(add “S” suffix to part number)  
NEMA Standards for E-rated medium voltage fuses require  
that fuses rated 100E or less open within 300 seconds  
(5 minutes) when subjected to an RMS value of 200-240%  
of the fuse continuous current rating; and fuses with an  
E rating larger than 100E must open within 600 seconds  
(10 minutes) when subjected to an RMS current of 220-  
240% of the fuses continuous current rating. These values  
establish one point on the time-current curve.  
• Clip-lock (CL) available.  
Dimensions  
6.38"  
9.75"  
3"DIA  
Application Note  
Since these fuses are used for the protection of general  
purpose circuits which may contain transformers, motors,  
and other equipment producing in-rush and/or overload  
currents, fuses should generally be rated at 140% of the  
normal full load current, and circuits should be analyzed  
to ensure that system load currents will not exceed the  
current rating of the fuse.  
Dim.A  
Clip  
Center  
Dim.B  
Figure 4  
Figure 5  
Figure 6  
ORDERING/CATALOG  
MAX INTERRUPTING  
RATING RMS (ASYM)*  
FIGURE  
NUMBER  
SIZE  
DIM. A (INCHES) DIM. B (INCHES)  
E-RATED  
NUMBER  
10E1C2.75  
15E1C2.75  
10E  
15E  
20E  
25E  
30E  
40E  
50E  
65E  
80E  
100E  
125E  
150E  
200E  
125E  
150E  
200E  
250E  
300E  
350E  
400E  
450E  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
7"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
10.875"  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
80,000  
4
4
4
4
4
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
20E1C2.75  
25E1C2.75  
30E1C2.75  
40E1C2.75  
50E1C2.75  
65E1C2.75  
80E1C2.75  
100E-1C2.75  
125E1C2.75  
150E1C2.75  
200E1C2.75  
125E2C2.75  
150E2C2.75  
200E2C2.75  
250E2C2.75  
300E2C2.75  
350E2C2.75  
400E2C2.75  
450E2C2.75  
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6  
© 2014 Littelfuse POWR-GARD® Products  
Rev: 063014  
4 of 10  
littelfuse.com  

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