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PFR5K20R0 PDF预览

PFR5K20R0

更新时间： 2024-02-20 13:08:33
品牌 Logo 应用领域
OHMITE /
页数 文件大小 规格书
2页 312K
描述
RES CHAS MNT 20 OHM 10% 696W

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中文翻译

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PFR5K20R0 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active包装说明：Chassis Mount,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8533.21.00.80风险等级：5.68
Is Samacsys：N其他特性：RATED CURRENT: 5.9A
构造：Rugged安装特点：CHASSIS MOUNT
端子数量：2最高工作温度：350 °C
最低工作温度：封装高度：66.77 mm
封装长度：454.02 mm封装形状：TUBULAR PACKAGE
封装形式：Chassis Mount封装宽度：52.4 mm
额定功率耗散 (P)：696 W额定温度：25 °C
电阻：20 Ω电阻器类型：FIXED RESISTOR
子类别：Fixed Resistors表面贴装：NO
技术：WIRE WOUND温度系数：500 ppm/ °C
端子形状：SPECIAL容差：10%
Base Number Matches：1

PFR5K20R0 数据手册

 浏览型号PFR5K20R0的Datasheet PDF文件第2页 
PFE and PFR Series  
Powr-Rib® Edgewound  
Edgewound and Round Wire  
Designed in both Edgewound and Round  
Wire formats, these rugged resistors can  
handle 700 to 1000 Watts of power.  
Specify our Edgewound design for  
very low resistance and high power  
capacity. When higher resistance with lower power  
capacity is required use our Round Wire design.  
These resistors are constructed of a heavy resistance alloy mounted on  
ceramic insulators and supported by a metal mounting bracket. Metal parts,  
except for the resistance element, are heavily plated to prevent oxidation at high  
operating temperatures and to prevent corrosion. The mounting bar is slotted  
on each end to facilitate installation. Edgewound units provide clamp-type ter-  
minals, permitting a reliable connection which can be moved along the resistive  
element to obtain intermediate values.  
chꢀRꢀctERꢁStꢁcS  
Size* (No. of  
Continuous duty as listed on follow-  
ing page.  
Current Rating  
Wattage Rating  
Insulator-Sections Long)  
2
3
4
5 (std.)  
6
7
8
Dimension A  
Dimension B  
in.  
mm  
8.875  
11.875 14.875 17.875 20.875 23.875 26.875  
700 to 1,000 (up to 1,600 watts on  
special order)  
(225.43) (301.63) (377.83) (454.03) (530.23) (606.43) (682.63)  
in.  
mm  
7.250  
10.250 13.250 16.250 19.250 22.250 25.250  
(184.15) (260.35) (336.55) (412.75) (488.95) (565.15) (641.35)  
±10% standard, ±5% available  
Resistance  
Tolerance  
Max. Amps Ohms  
Ohms  
Ohms  
Ohms  
Ohms  
Ohms  
Ohms  
Clamps, movable along resistor  
wire for setting intermediate resis-  
tance values on Edgewound units  
(current must be derated in propor-  
tion).  
Terminals  
PFE Edgewound  
100  
91  
89  
78  
75  
0.033  
0.040  
0.046  
0.052  
0.060  
0.057  
0.070  
0.078  
0.088  
0.100  
0.080  
0.100  
0.110  
0.120  
0.140  
0.100  
0.120  
0.140  
0.160  
0.180  
0.120  
0.140  
0.170  
0.190  
0.210  
0.140  
0.160  
0.200  
0.220  
0.250  
0.160  
0.180  
0.230  
0.250  
0.300  
68  
63  
57  
54  
50  
0.070  
0.080  
0.100  
0.110  
0.120  
0.120  
0.130  
0.160  
0.180  
0.200  
0.180  
0.190  
0.230  
0.250  
0.280  
0.220  
0.250  
0.300  
0.330  
0.370  
0.260  
0.300  
0.360  
0.400  
0.450  
0.300  
0.350  
0.420  
0.470  
0.530  
0.340  
0.400  
0.480  
0.540  
0.610  
±300 ppm/°C for resistors 50 amps  
and more; ±500 ppm/°C for resis-  
tors 47 amps or less  
Temperature  
Coefficient  
See chart on following page  
Ohmic Values  
Mounting  
47  
43  
41  
39  
33  
0.170  
0.210  
0.230  
0.260  
0.350  
0.280  
0.330  
0.360  
0.420  
0.560  
0.380  
0.460  
0.510  
0.580  
0.770  
0.500  
0.600  
0.670  
0.750  
1.00  
0.600  
0.720  
0.800  
0.900  
1.20  
0.700  
0.850  
0.930  
1.05  
0.800  
0.980  
1.06  
Metal mounting bar is slotted on  
each end to facilitate installation.  
1.20  
1.40  
1.60  
10x rated wattage for five seconds  
Short Term  
Overload  
29  
26  
18.4  
16.3  
14.6  
0.450  
0.560  
0.690  
0.880  
1.10  
0.730  
0.900  
1.20  
1.50  
1.90  
1.00  
1.20  
1.70  
2.20  
2.70  
1.30  
1.60  
2.20  
2.80  
3.50  
1.50  
1.90  
2.70  
3.40  
4.30  
1.75  
2.20  
3.10  
4.00  
5.10  
2.00  
2.50  
3.50  
4.60  
5.90  
Derating  
12.7  
11.8  
10.3  
9.4  
1.40  
1.70  
2.10  
2.70  
2.40  
2.90  
3.70  
4.60  
3.50  
4.20  
5.30  
6.50  
4.50  
5.40  
6.80  
8.50  
5.50  
6.60  
6.50  
7.80  
9.80  
12.3  
7.50  
9.00  
11.3  
14.2  
100  
80  
60  
40  
20  
0
8.30  
10.40  
PFR Round-Wire  
8.3  
7.6  
6.6  
5.9  
5.1  
3.4  
4.1  
5.3  
6.3  
7.9  
5.9  
7.1  
8.5  
11.0  
13.0  
17.0  
20.0  
25.0  
13.5  
15.9  
20.8  
24.5  
30.7  
16.0  
18.8  
24.6  
29.0  
36.4  
18.5  
21.7  
28.4  
33.5  
42.1  
10.0  
13.0  
15.4  
19.3  
9.2  
10.9  
13.6  
*Standard 5-section units are stocked; part numbers are listed on the following page.  
0 2550 100 150 200 250 300 350  
Ambient Temperature, °C  
(continued)  
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com  
105  
12

中文翻译

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