Ch-technology CPR-High-Volume Uživatelský manuál stáhnout pdf (Strana 3)

www.vishay.com For technical questions, contact: ww2aresistors@vishay.com Document Number: 30261

50 Revision: 14-Nov-08

CPR High Volume

Vishay Dale

Wirewound/Metal Oxide Resistors, Commercial Power,

Radial Terminals

MATERIAL SPECIFICATIONS

Element:

Wirewound = Copper-nickel alloy or nickel-chrome alloy,

depending on resistance value

Metal Oxide = High temperature fired Metal Oxide film

Core: Ceramic

Body: Steatite ceramic case with cement potting compound

Terminals: Tin plated steel

Part Marking: DALE, model, wattage, value, tolerance,

date code

RATED POWER IN %

AMBIENT TEMPERATURE IN °C

100

120

- 55 75 275- 25 175

Derating

225

125

Wirewound

Metal Oxide

PERFORMANCE

TEST CONDITIONS OF TEST TEST LIMITS

Thermal Shock - 55 °C to + 275 °C (+ 225 °C for Metal Oxide), 5 cycles, 30 min dwell time ± (5.0 % + 0.05 Ω) ΔR

Short Time Overload 5 x rated power for 5 s ± (4.0 % + 0.05 Ω) ΔR

Dielectric Withstanding Voltage

1000 V

rms

for 1 min

± (2.0 % + 0.05 Ω) ΔR

Low Temperature Operation - 65 °C, full rated working voltage for 45 min ± (3.0 % + 0.05 Ω) ΔR

Humidity 75 °C, 90 % - 100 % RH, 240 h ± (5.0 % + 0.05 Ω) ΔR

Load Life 1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (10.0 % + 0.05 Ω) ΔR

Terminal Strength 5 pounds for 30 s; body twisted about axis, 3 x 360° rotations ± (2.0 % + 0.05 Ω) ΔR

Resistance to Solder Heat Terminal immersed 3.5 s in molten solder at 1/8" to 3/16" from body ± (4.0 % + 0.05 Ω) ΔR

1 2 3 4

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Ch-technology CPR-High-Volume Uživatelský manuál Strana 3