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ZX-3 type multi-valued resistor


ZX-3 multi-value resistor is a high-precision and high-stability resistance measuring tool developed by our company for various multi-functional standard sources. It can convert large currents into corresponding voltage values, thus facilitating the accurate measurement of multi-meters.

  • Product description
  • ZX-3 multi-value resistor is a high-precision and high-stability resistance measuring tool developed by our company for various multi-functional standard sources. It can convert large currents into corresponding voltage values, thus facilitating the accurate measurement of multi-meters.
    The switch used in the resistor is closed, the brush does not need to be cleaned, the contact pressure is small, the life is long, and the variation is small. The support is made of high-insulation engineering plastics, and the whole machine has good insulation performance. The precision wire-wound resistance components are made of high-quality enameled manganese-copper alloy wire and are non-inductively wound. They have been strictly processed and have high long-term stability. This resistor complies with the international ZBY162-83 professional standard for AC and DC resistors.
    ZX-3 multi-value resistors are widely suitable for resistance measurement and other experiments in factories, schools and scientific research institutions, and can be used for precision adjustment of resistance, current regulation and voltage division in DC circuits.

    ◆Main technical indicators
    1. Resistance value of ZX-3 multi-value resistor

     

    Resistor resistance (unit: Ω) Maximum current (unit A) Accuracy(%)
    1000 0.03 0.01
    100 0.1 0.01
    10 0.3 0.01
    1 1 0.01
    0.1 5 0.01
    0.01 30 0.01
    0.001 50 0.01
     
    2. The reference temperature (to ensure accurate temperature) and nominal temperature (usage temperature) of the resistor should comply with:
    Reference temperature (℃) 20±1.5
    Nominal temperature (℃) 20±15
    3. The reference relative humidity and nominal relative humidity range of the resistor should comply with:
    Reference relative humidity range: 40% ~ 60%
    Nominal relative humidity range: 25% ~ 80%
    4. Reference power, nominal power and limit power of the resistor
     
    Reference power 2W
    Nominal power 1.5W
    Ultimate power 9W

     

    5. Under the conditions of reference temperature, humidity and reference power, the accuracy of each resistor is 0.01%
    6. Under the reference conditions of temperature and power, the relative humidity exceeds the reference range, but within the nominal range, the additional error caused by changes in relative humidity should not exceed the corresponding grade index value.
    7. Relative humidity and power Under reference conditions, the temperature exceeds the reference range, but within the nominal range, the additional error caused by humidity changes should not exceed the corresponding grade index value.
    8. Under reference conditions of temperature and relative humidity, the power exceeds the reference power range, but within the nominal power range, the additional error caused by power changes should not exceed the corresponding level index value, and it can withstand the limit power for 2 hours. . After the resistor returns to the reference condition, the actual value change of the resistor before and after the application of the extreme power should not exceed 10% of the corresponding index value of a grade.
    9. The variation in resistance value of the resistor caused by the change of each switch should not exceed 0.0005Ω.
    10. The insulation resistance between the resistor circuit and the shell should be greater than 100MΩ.
    11. The circuit and shell of the resistor should be able to withstand an experiment of 45Hz ~ 60Hz AC voltage for one minute without breakdown. The voltage value is 2000V
    12. The multi-value resistor model is ZX-3, the overall size is 318×238×105 (unit: mm), and the mass is 1.5Kg.