Toroidal rheostats and potentiometer model 714

· Power: 2 W
· Dimensions: 8 (Æ19 mm)
· Resistive support for winding wire in plastic case

Other special versions are available on request

TECHNICAL CHARACTERISTICS

· Range of ohm values from 1R0 to 30K
· Ohm value tolerance standard: J (± 5 %), limited: F (± 1 %)
· Independent linearity standard: ± 0.5 %
· Angle of electric rotation standard: 270° / 300° ± 2°
· Available on request: 320° / 340° / 350° o 355° / 358° with short circuit area
· Residual resistance 0.2 %, at least 2 W
· Contact noise max.: 100 W ENR
· Power nominal: 2 W, otherwise according to the load reduction curve
· Multiple versions: 1.5 W / Section
· Insulation resistance: > 1000 MW bei 1000 VDC / 1 minute
· Electric rigidity: 1000 V AC / 50 Hz / 1 minute, at 1 bar
· Temperature coefficient of resistive wire: ≤ 100R = ± 180 ppm / °C, > 100R = ±20 ppm / °C

MECHANICAL/PHYSICAL CHARACTERISTICS

· Angle of mechanical rotation standard: 270° / 300° +5°/-0°
· Available on request: Max 320° 340° or (360°)
· Useful life 0.5 106cycles, tested at room temperature, potentiometer without load (MIL-R-12934 H)
· Static torque 2 - 3 Ncm
· Operating torque 1 - 2 Ncm
· Tightening torque 50 Ncm
· Ball bearingthrust bearing (ball thrust, on request)
· Terminals gold plated brass
· Assembly max.: 4 sections, phase movement ± 1 %
· Weight: 8 g (standard model)
· Range of operating temperature: - 55 °C to + 125 °C
· Vibration test: 0 g from 10 to 2’000 Hz
· Shock test (MIL-R-12934 H)
· Test with saline spray 96 h without corrosion (MIL-R-12934 H)
· Humidity test (on request) 96 h at 80 up to 98 % Relative Humidity (MIL-R-12934 H)



 
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