Coudoint Rotary Rheostats Documentation
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Rotary Rheostats Hardware Reference Document 1101066 - Edition June 2009

Rotary Rheostats Hardware Reference 1 Main Features Series: Rotary rheostats come in 6 standard models, each model with a different power rating : T16 (16 W), T25 (25 W), T50 (50 W), T100 (100 W), T150 (150 W), T300 (300 W). Higher power ratings are achieved with tandem mounted units. These units may be used to replace the obsolete models T500 (500 W) and T1000 (1000 W). Design: Rotary rheostats are constructed with: • a ceramic tore, specific to each model • a wirewounded resistor: . with a nichrome or copper-nickel wire for a low TCR (Temperature Coefficient of electrical Resistance)...

Rotary Rheostats Hardware Reference 2 Product Selection Guide 2.1 Product Selection Table Maximum power rating 16 W 25 W 50 W 100 W 150 W 300 W Model Feasible total ohmic values T16 1.5 Ù to 10 kÙ T25 1.5 Ù to 30 kÙ T50 1.5 Ù to 25 kÙ T100 1.8 Ù to 20 kÙ T150 0.5 Ù to 50 kÙ T300 1 Ù to 20 kÙ The product identification code takes into account its particular specifications (model, type of coating, number of modules, rotary button and / or scale, ohmic value, etc.) according to the description given on page 11. 2.2 Maximum Current Maximum current: The current in each turn of the winding shall...

Rotary Rheostats Hardware Reference 3 Base Models 3.1 Model T16 Feasible (total) ohmic values: 1.5 Ù to 10 kÙ Features: Features Units Values Power rating for ÄT = 300°C W 16 Testing voltage V 1,500 Maximum working voltage V 500 Rotation torque N.m 2.10-2 to 5.10-2 Electrical travel degree 280 Mechanical travel degree 300 Tolerance on ohmic value - ± 10 % Average weight* g 40 *: Weight value depends on the type of the wire and then on the ohmic value of the rheostat. Dimensions and panel mounting: A: Mounting by 8 mm diameter threaded collar B: Anti-rotation pin C: Terminals: 3 stainless...

Rotary Rheostats Hardware Reference 3.2 Model T25 Feasible (total) ohmic values: 1.5 Ù to 30 kÙ Features: Features Units Values Power rating for ÄT = 300°C W 25 Testing voltage V 2,000 Maximum working voltage V 500 Rotation torque N.m 3.10-2 to 8.10-2 Electrical travel degree 280 Mechanical travel degree 300 Tolerance on ohmic value - ± 10 % Average weight* g 75 *: Weight value depends on the type of the wire and the ohmic value of the rheostat. Dimensions and panel mounting: A: Mounting by 10 mm diameter threaded collar B: Anti-rotation pin C: Terminals : 3 stainless steel 5.5 mm wide...

Rotary Rheostats Hardware Reference 3.3 Model T50 Feasible (total) ohmic values: 1.5 Ù to 25 kÙ Features: Features Units Values Power rating for ÄT = 300°C W 50 Testing voltage V 2,000 Maximum working voltage V 500 Rotation torque N.m 5.10-2 to 10.10-2 Electrical travel degree 275 Mechanical travel degree 300 Tolerance on ohmic value - ± 10 % Average weight* g 200 *: Weight value depends on the type of the wire and then on the ohmic value of the rheostat. Dimensions and panel mounting: A: Mounting by 10 mm diameter threaded collar B: Anti-rotation pin C: Three 4 mm diameter threaded...

Rotary Rheostats Hardware Reference 3.4 Model T100 Feasible (total) ohmic values : 1.8 Ù to 20 kÙ Features : Features Units Values Power rating for ÄT = 300°C W 100 Testing voltage V 2,000 Maximum working voltage V 500 Rotation torque N.m 8.10-2 to 15.10-2 Electrical travel degree 280 Mechanical travel degree 300 Tolerance on ohmic value - ± 10 % Average weight* g 300 *: Weight value depends on the type of the wire and then on the ohmic value of the rheostat. Dimensions and panel mounting: A: Mounting by threaded collar Ø M10 B: Anti rotation pin C: 3 threaded terminal pins Ø M4 Definition:...

Rotary Rheostats Hardware Reference 3.5 Model T150 Feasible (total) ohmic values: 0.5 Ù to 50 kÙ Features: Features Units Values Power rating for ÄT = 300°C W 150 Testing voltage V 2,000 Maximum working voltage V 500 Rotation torque N.m 10.10-2 to 25.10-2 Electrical travel degree 280 Mechanical travel degree 300 Tolerance on ohmic value - ± 5 % Average weight* g 550 *: Weight value depends on the type of the wire and the ohmic value of the rheostat. Dimensions and panel mounting: A: Rheostat mounting by three 6 mm screw holes spaced 120° apart on a Ø 110 mm circle B: Scale mounting by two 4...

Rotary Rheostats Hardware Reference 3.6 Model T300 Feasible (total) ohmic values: 1 Ù to 20 kÙ Features: Features Units Values Power rating for ÄT = 300°C W 300 Testing voltage V 2,500 Maximum working voltage V 750 Rotation torque N.m 15.10-2 to 50.10-2 Electrical travel degree 285 Mechanical travel degree 300 Tolerance on ohmic value - ± 5 % Average weight* g 1,700 *: Weight value depends on the type of the wire and then on the ohmic value of the rheostat. Dimensions and panel mounting: A: Rheostat mounting by three 6 mm screw holes spaced 120° apart on a Ø 162 mm circle B: Scale mounting...

Rotary Rheostats Hardware Reference 4 Product Identification Code T150 C 1 X X 3R27 Model: "T16", "T25", "T50", "T100", "T150" or "T300" Total ohmic value: nnnRddd for nnn.ddd Ù Ex. : 3R27 for 3.27 ohms Coating: "S": silicon "C": cement "V": vitreous enamel Scale: "X": without scale "C": with scale Number of ganged modules: "1", "2", "3" or "4" Rotary knob: "X": without knob "B": with knob This identification code is followed: – when ordering, from the list of the optional features which are not described in the code, – internally, as a special code if the product cannot be considered as a...

Rotary Rheostats Hardware Reference 6 Examples of Designs 6.1 900-watts Rotary Rheostat Triple T300-rheostat. Shown model : T300C3XX200R 6.2 600-watts Rotary Rheostat Dual T300-rheostat with rotary knob and scale. Shown model : T300C2BC200R Document 1101066 – Edition June 2009 Information and products subject to change without prior notice 12/13