Polarized Resistor Drainage (PRD)

Applications

Protection of trunk pipelines and other metal underground structures from corrosion caused by stray currents.

Parameters

DescriptionPRD-100PRD-300PRD-500
1 Rated current, А 100 300 500
2 Continuous service current, А 80 150 200
3 Minimum adjustment resistance, Ohm, ±10 % 0.0008
4 Maximum adjustment resistance, Ohm, ±10 % 0.020
5 Number of sections, pcs 5
6 Resistance of one section, Ohm 0.004±0.0002
7 Permissible reverse voltage, V 1000
8 Overall dimensions, mm 610х440х630
9 Weight, kg, max 50
10 Service life, minimum, years 10
11 Operating temperature -60°С to +40°С

 

Fig. 1 – General view of PRD

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