HIGH POWER WIRE WOUND RESISTOR
HM Series: Metal-Clad, High Wattage
ELECTRICAL SPECIFICATION
Characteristics
Limits
Resistance and Tolerance
Resistance nominal
1 < R
Resistance Tolerance
±5% (J)
±10% (K)
1 > R
Temperature coefficient
Power rating load
±200ppm/°C max.
R/R<±(1%+0.05 )
(Temperature) 350°C max
Short-time overload
1000% rated power 5 seconds
R/R<±(2%+0.05 )
500Vdc 100M min
2000Vac 1 minute
Insulation resistance
Dielectric withstanding voltage
ELECTRICAL CURVES
Power Derating Curve
Temperature Rise
120
300
250
200
150
100
50
100
80
60
40
20
0
0
0
25
50
75
100
-50
0
50
100
150
200
(%) Percent Rated Load
(°C) Ambient Temperature
C2E04
RFE International • Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail Sales@rfeinc.com
REV 2007.04.12
RFE [ RFE INTERNATIONAL ]
