Ch-technology OV Series Adjustable Manual de usuario descargar pdf (Pagina 2)

OV Series Adjustable

www.vishay.com

Vishay Milwaukee

Revision: 18-Dec-12

Document Number: 31836

For technical questions, contact: vishaymilwaukeeresistor@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

Adjustable Oval Resistor

FEATURES

• Terminal bands are spotwelded onto the

insulated core and resistance-alloy wire is

precisely wound onto the oval core

• The wire is spotwelded to the terminal bands

and then “locked” onto the core with a silicone

or cement coating

• Available as fixed and adjustable resistors (for fixed Oval

Resistor see www.vishay.com/doc?31835

)

•Wirewound

• Material categorization: For definitions of compliance

please see www.vishay.com/doc?99912

Notes

• Ratings are based on a temperature rise of 300 °C above an ambient of 40 °C.

(1)

Standard fixed resistance tolerance ± 5 %. Resistance values less than 1  and adjustable have ± 10 % tolerance. Closer tolerances

available upon request.

Notes

• Ratings are based on mounting on a steel panel 10" x 10" x 0.040". Derate by 29 % when mounting on non-heat conductive surface.

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL MODEL HISTORICAL MODEL

POWER RATING

RESISTANCE RANGE



TOLERANCE

(1)

± %

OVSA0040 16-32 A Oval 40 1.7 to 27K 10

OVSA0055 16-56  Oval 55 2.4 to 64K 10

OVSA0070 16-76 A Oval 70 3.0 to 92K 10

OVSA0095 16-96 A Oval 95 4.1 to 120K 10

DERATING FOR GROUP INSTALLATIONS

NUMBER OF RESISTORS

STACKED

% OF SINGLE RATING

VERTICAL CHASSIS HORIZONTAL CHASSIS

28075

37060

46550

DIMENSIONS in inches (millimeters)

GLOBAL MODEL

DISTANCE BETWEEN TERMINALS

OVERALL LENGTH TERMINAL STYLE

OVSA0040 2.75 (69.85) 2 (50.8) = A + 0.625 (15.875) A

OVSA0055 4.25 (107.95) 3.5 (88.9) = A + 0.625 (15.875) A

OVSA0070 5.5 (139.7) 4.75 (120.65) = A + 0.625 (15.875) A

OVSA0095 6.75 (171.45) 6 (152.4) = A + 0.625 (15.875) A

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