1282Precision high-load measuring resistors

Highly precise and powerful! Nominal load 20 W, resistance values from 1 mΩ to 100 mΩ, designed in 4-wire technology for maximum accuracy. Error of tolerance of only 0.02 % and suitable for technical frequencies up to 50 Hz. Ideal in combination with high-quality digital voltmeters for precise measurement of direct and alternating currents up to 200 A.

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präzision hochlast mess widerstand typ 1282 4 leitertechnik precision high capacity resistor four terminal measurement principle model 1282 burster

Productinformation

Resistance value	1 mΩ 10 mΩ 100 mΩ Customised values
Tolerance	0,02 %
Temperature coefficient	≤ ± 20 ppm/K
Storage stability	< 0,01 % over years
Power	20 W
Range of operating temperature	0 ... +40 °C
Specific characteristics	Design in 4-wire technology Suitable for technical frequencies up to 50 Hz

1282
DE EN

1282
DE EN

Model 1282 measuring resistors are used in conjunction with premium digital voltmeters for high-precision measurement of direct and alternating currents up to 200 A. The compact design and good technical data, in particular the exceptionally good temperature and long-term stability, allow these resistors to be used universally.

A typical field of application, among many others, is the broad spectrum of reliability tests. Measurements taken time and again provide a source of information about the quality level of components, devices and systems.

Technologies already proven in our precision and calibration resistors - which in particular ensure the delicate dissipation of thermal energy - have been transferred to the precision high-load measuring resistors. They are constructed using 4-wire technology. The voltage path is calibrated to the customer-specific nominal value and the tolerance class (0.02 % at the reference temperature = 23 °C).

Under load, the measuring resistor experiences a temperature increase. Large heat sinks ensure good heat dissipation. The thermal resistance of the model 1282 is 1 K/W, i.e. the temperature of the resistor increases by 1 K per watt of mechanical power supplied.

All performance and limit values refer to the MANGANIN^® resistor material used. Unfavourable installation with insufficient ventilation and cooling possibilities must be considered according to the load. Cu terminals, which ensure low thermoelectric voltages, form the potential taps, while the current is supplied via screw terminals, dimensioned according to the maximum mechanical power.