- Resistance from 1 mΩ to 10 MΩ
- Power Rating : 225 W/decade, 250 W max. or higher (Contact IET for Custom Higher Power Units)
- Accuracy: 0.5% or 1%
- Voltage Rating: 1000 V or higher
- Special and custom configurations available
The High-Power Decade Resistance Substituter (HPRS) Series is a family of resistance decade boxes offering a broad choice of high-power, excellent-performance resistance sources.
The HPRS Series resistance decade boxes employ state-of-the-art precision resistors of various types for high accuracy, high stability, and low temperature and power coefficients of- resistance. High-power resistors within the unit are made available without sacrificing other electrical properties.
The standard models offer a choice of 3 to 8 decades. The panels are clearly labeled showing the step size and maximum voltage and current limitations for each decade.
With a resolution as low as 1 mΩ and a maximum resistance of 10 MΩ , the HPRS resistance decade box may be used as a general purpose substituter as well as a high power load for testing power supplies and for other high-power applications.
Applications include calibration of meters and instruments. HPRS resistance decade boxes are useful development tools wherever precise resistances with high-power handling capacity are required.
Precisione :
Opzione F: ± (1% + 20 mΩ)
Opzione C: ± (0,5% + 20 mΩ)
Resistenza zero: <5 mΩ per decennio
Tensione massima a caso: interruttori di picco a 1000 V:
Rotazione continua 10 posizioni contrassegnate da "0" - "9"
Resistenza per passo | Resistenza totale decennale | Corrente massima * | Potenza massima per passaggio * (W) | Coefficiente di temperatura (ppm / ° C) | Tipo di resistenza |
1 mΩ | 0,009 Ω | 8 A | 0,036 | ± 50 | Filo di resistenza |
10 mΩ | 0,09 Ω | 6 A | 0,36 | ± 50 | |
100 mΩ | 0,9 Ω | 6 A | 3.6 | ± 20 | |
1 Ω | 9 Ω | 5 A | 25 | Da -20 a +80 | Power Film |
10 Ω | 90 Ω | 1,5 A | 25 | Da -20 a +80 | |
100 Ω | 900 Ω | 0,5 A | 25 | Da -20 a +80 | |
1 kΩ | 9 kΩ | 150 mA † | 25 † | Da -20 a +80 | |
10 kΩ | 90 kΩ | 50 mA † | 25 † | Da -20 a +80 | |
100 kΩ | 900 kΩ | V limite † | V limite † | Da -20 a +80 | Filo avvolto / pellicola metallica |
1 MΩ | 9 MΩ | V limite † | V limite † | ± 50 | A filo avvolto / film |
* Soggetto a un massimo di 250 W max. per unità: 9 passaggi per decennio, moltiplicare il valore decennale per la potenza per passo. Più decenni possono essere utilizzati per condividere i carichi di energia | |||||
† Soggetto a 1000 V (dc + ac) max |