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PDFs and Datasheets PFE and PFR Series Datasheet

PFE and PFR Series Datasheet

Powr-Rib® Edgewound Edgewound and Round Wire 

Res Pfe Pfr product image

 

Designed in both Edgewound and Round Wire formats, these rugged resistors can handle 700 to 1000 Watts of power. Specify our Edgewound design for very low resistance and high power capacity. When higher resistance with lower power capacity is required use our Round Wire design. These resistors are constructed of a heavy resistance alloy mounted on ceramic insulators and supported by a metal mounting bracket. Metal parts, except for the resistance element, are heavily plated to prevent oxidation at high operating temperatures and to prevent corrosion. The mounting bar is slotted on each end to facilitate installation. Edgewound units provide clamp-type terminals, permitting a reliable connection which can be moved along the resistive element to obtain intermediate values.

Characteristics

Continuous duty as listed on following page.

700 to 1,000 (up to 1,600 watts on special order)

±10% standard, ±5% available

Clamps, movable along resistor wire for setting intermediate resis-tance values on Edgewound units (current must be derated in propor-tion)

±300 ppm/°C for resistors 50 amps and more; ±500 ppm/°C for resis-tors 47 amps or less

See chart on following page

Metal mounting bar is slotted on each end to facilitate installation.

10x rated wattage for five seconds

Derating

Res Pfe Pfr Graph

Dimensions

All values for reference only;
Consult factory for details.

 

PFE5K Edgewound

Res Pfe Pfr Dimensions 1

 

Terminal 2172B (30 amps & more)

Res Pfe Pfr Dimensions 2

 

Terminal 2172G (29 amps & less)

Res Pfe Pfr Dimensions 3

 

PFR5K Round wire

Res Pfe Pfr Dimensions 4

 

Terminal 2175 (standard on8.3 amps & less) & Terminal 2176 (optional for 90ϒ terminal mounting)

Res Pfe Pfr Dimensions 5

2: 8.875 (225.43)

3: 11.875 (301.63)

4: 14.875 (377.83)

5 (std.): 17.875 (454.03)

6: 20.875 (530.23)

7: 23.875 (606.43)

8: 26.875 (682.63)

2: 7.250 (184.15)

3: 10.250 (260.35)

4: 13.250 (336.55)

5 (std.): 16.250 (412.75)

6: 19.250 (488.95)

7: 22.250 (565.15)

8: 25.250 (641.35)

Ordering Information

Res Pfe Pfr Order Info

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