Wire-wound resistor

Resistor type:

RD/40A/12s./3,3kV/80R.

Parameters:

rated operating voltage	3,3 kV
rated voltage of insulation to earth	18,5 kV / 1 min.
rated operating current	40 A
heat resistance of the resistor at rated current	12 s.
rated resistance	80Ω ±5%
level of protection	IP00
type of cooling	natural
application	indoor

Compliance with standards:

• PN-E-05115
• PN-EN 60071-1
• PN-EN 60071-2

Quality testing:

• examination
• resistance measurement
• testing the insulation for the puncture of test volatge of 18,5 kV/1min., 50 Hz

Operating conditions:

• casual work
• natural cooling
• indoor use
• work in an atmosphere containing no explosive gases and mixtures and corrosive fumes
• ambient temp.: lowest long-term -30°C, the highest 24-hour 30°C, the highest short-term 55°C
• relative humidity to 95% at +22°C (293 K)
• installation height max. 1000 meters above sea level

Construction:

The resistor is constructed as shown below. The thrust elements are made of wire thrust wire (FeCrAl) elliptically coiled and placed on an insulated core. The resistor consists of five thrust elements which are placed on the resin post insulators providing another extra level of insulation.

TECHNICAL DRAWINGS:

All technical data presented in the catalog can be changed due to technological progress.

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Wire-wound resistor