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Fabricante: HVR

Resistores de alambre y tubulares

Wirewound and Tubular Resistors

Technical Information:

  • High voltage resistance
  • Essentially non-inductive
  • Wide range of geometries
  • Custom solutions available

Typical Applications

  • Antenna test loads
  • Surge protection
  • Capacitor discharging

HVR Wirewound and Tubular Resistors are made from a precisely selected mixture of clay, aluminum oxide, and carbon. After mixing, the material is extruded into a specific shape, and then fired under controlled conditions at high temperature.

Subsequently, aluminum is flame-sprayed onto the surface (as standard) to provide an electrical connection.

Alternative metallized connections and corona-screened terminals are available.

Wirewound and Tubular Resistors are available in external diameters from 10 mm to 50 mm and lengths up to 600mm.

With a high energy impact rating and low inductance, typical applications for HVR Wirewound and Tubular Resistors include antenna test loads, surge protection, capacitor discharging, and parasitic elements in network and anode power valve circuits in induction heaters.

Technical Specification

Type 710 701 702 708* 721* 720 719 723
Outer Diameter (mm) 25 25 25 10 10 10 10 10
Inner Diameter (mm) 15 15 15 - - - - -
Length (mm) 460 250 150 60-200 50-150 116 56 50
Nominal Length Lm (mm) 25 25 25 10 10 10 10 10
Weight (g) 295 160 95 38-130 7-23 18 9 7
Ohm Min 47 22 10 4R7 10 22 10 10
Max 10000 4700 2200 4700 3300 2200 1000 1000
Joules at 20˚C 45000 22000 11000 4500 to 20000 1000 to 3000 2600 1100 1000
Power at 20˚C [W] 150 90 55 18-80 10-30 20 10 10
Impulse V (1,2/50us) 12Log R 8Log R 6Log R 3.3Log R to 7.5Log R 1.6Log R to 5Log R 4.3Log R 1.9Log R 1.6Log R


TYP 708 RODS
Product Code 708A 708B 708F 708D 708G
Outer Diameter (mm) 20 20 20 20 20
Length (mm) 70 100 125 150 185
Nominal Length Lm (mm) 10 10 10 10 10
Weight (g) 46 65 81 98 120
Ohm Min 3R3 5R6 6R8 10R0 12R0
Max 1K5 2K7 3K3 3K9 5K6
Joules at 20˚C 5650 9050 12000 14750 18750
Power at 20˚C [W] 21 30 37.5 45 55


TYP 721 RODS
Product Code 10 10 10 10
Outer Diameter (mm) 60 85 100 125
Length (mm) 10 10 10 10
Nominal Length Lm (mm) 9 13 15 19
Weight (g) 10R0 15R0 22R0 27R0
Ohm Min 4K7 6K8 10K0 12K0
Max 1250 1900 2500 3300
Joules at 20˚C 10 13.5 17 21.5
Power at 20˚C [W] 10 10 10 10
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Wirewound and Tubular Resistors

Technical Information:

  • High voltage resistance
  • Essentially non-inductive
  • Wide range of geometries
  • Custom solutions available

Typical Applications

  • Antenna test loads
  • Surge protection
  • Capacitor discharging

HVR Wirewound and Tubular Resistors are made from a precisely selected mixture of clay, aluminum oxide, and carbon. After mixing, the material is extruded into a specific shape, and then fired under controlled conditions at high temperature.

Subsequently, aluminum is flame-sprayed onto the surface (as standard) to provide an electrical connection.

Alternative metallized connections and corona-screened terminals are available.

Wirewound and Tubular Resistors are available in external diameters from 10 mm to 50 mm and lengths up to 600mm.

With a high energy impact rating and low inductance, typical applications for HVR Wirewound and Tubular Resistors include antenna test loads, surge protection, capacitor discharging, and parasitic elements in network and anode power valve circuits in induction heaters.

Technical Specification

Type 710 701 702 708* 721* 720 719 723
Outer Diameter (mm) 25 25 25 10 10 10 10 10
Inner Diameter (mm) 15 15 15 - - - - -
Length (mm) 460 250 150 60-200 50-150 116 56 50
Nominal Length Lm (mm) 25 25 25 10 10 10 10 10
Weight (g) 295 160 95 38-130 7-23 18 9 7
Ohm Min 47 22 10 4R7 10 22 10 10
Max 10000 4700 2200 4700 3300 2200 1000 1000
Joules at 20˚C 45000 22000 11000 4500 to 20000 1000 to 3000 2600 1100 1000
Power at 20˚C [W] 150 90 55 18-80 10-30 20 10 10
Impulse V (1,2/50us) 12Log R 8Log R 6Log R 3.3Log R to 7.5Log R 1.6Log R to 5Log R 4.3Log R 1.9Log R 1.6Log R


TYP 708 RODS
Product Code 708A 708B 708F 708D 708G
Outer Diameter (mm) 20 20 20 20 20
Length (mm) 70 100 125 150 185
Nominal Length Lm (mm) 10 10 10 10 10
Weight (g) 46 65 81 98 120
Ohm Min 3R3 5R6 6R8 10R0 12R0
Max 1K5 2K7 3K3 3K9 5K6
Joules at 20˚C 5650 9050 12000 14750 18750
Power at 20˚C [W] 21 30 37.5 45 55


TYP 721 RODS
Product Code 10 10 10 10
Outer Diameter (mm) 60 85 100 125
Length (mm) 10 10 10 10
Nominal Length Lm (mm) 9 13 15 19
Weight (g) 10R0 15R0 22R0 27R0
Ohm Min 4K7 6K8 10K0 12K0
Max 1250 1900 2500 3300
Joules at 20˚C 10 13.5 17 21.5
Power at 20˚C [W] 10 10 10 10
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