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FLAMEPROOF POWER RESISTORS
PW SERIES

FLAMEPROOF POWER RESISTORS
FLAMEPROOF POWER RESISTORS
FLAMEPROOF POWER RESISTORS
FLAMEPROOF POWER RESISTORS
FLAMEPROOF POWER RESISTORS
FLAMEPROOF POWER RESISTORS

Flameproof Power Resistors PW Series
PW series wire wound resistors are available in four power ratings of 5, 10, 20 and 50 Watts. They are designated Types PW5, PW 10, PW20 and PW 50. Combining a unique design with a high degree of automatic assembly, they offer practical possibilities for cost saving.

Applications
PW Series wire wound resistors are particularly recommended for the following situations:
(a) A low cost, easily installed power resistor is required e.g. dish washers, electric stoves, range hoods etc.
(b) Circuits requiring an actual wattage dissipation equal to, or less than, the wattage rating of the PW resistor selected.
(c) Operation must be reliable at high ambient temperatures.
(d) Radio, TV or industrial circuits requiring the PW wattage dissipation and where a fireproof resistor is essential.
(e) Medium power bridge circuits with well balanced pairs.
(f) Medium power attenuator networks.

Design and Construction
The resistance wire is uniformly and tightly wound on a glass fibre core. Types PW5 and 10 have alloy plated copper leads securely fastened to the winding by special terminations, while the PW20 and PW50 have 6.3 QC terminals.
The resistance winding is housed in a rectangular ceramic case which is filled with an inert and non-flammable compound, unaffected by solvents. Having high thermal conductivity, this filling compound maintains a lower surface temperature.

 

Flameproof Power Resistors PW Series Technical data
Flameproof Power Resistors PW Series Temperature and Derating Charts
Flameproof Power Resistors PW Series Derating Curve for Ambient Temperatures
Flameproof Power Resistors PW Series Dimensions
Flameproof Power Resistors PW Series Dimensions

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