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R 500 REF, RCZ 500 REF

R 500 REF, RCZ 500 REF
2Pages

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RCZ 500 REF, R 500 REF Reference Impulse Dividers Reference dividers are used for comparative measurements for the calibration of measuring systems. Reference dividers type RCZ are designed for the calibration of voltage dividers for AC, DC, full and tail chopped impulse voltages. Of course they can be used for normal measurements also. The active part of the high voltage unit of dividers type RCZ consists of one oil-filled capacitor that is housed in a cylinder made from glass fibre enforced epoxy resin. A series damping resistance is inserted between the capacitor elements of the unit and acts as distributed internal resistive element. A further resistor is arranged in parallel with these RC elements. Reference dividers type R are designed for the calibration of voltage dividers for full and front-chopped lightning impulse voltages. Also R dividers can be used for normal measurements. The active part of the high-voltage unit in the R 500 REF forms a low-inductance resistor consisting of CrNi wire wound on a core that is housed also in a glass fibre enforced epoxy resin cylinder. The reference divider type R is equipped with a special HV electrode to guarantee corona-free operation. Reference dividers by Haefely meet all requirements of IEC 60060-2 (1994), in particular those with respect to measuring accuracy and step response. The secondary unit consists of a damping resistor of low inductance and for the divider type RCZ an additional capacitor both arranged in a coaxial design. The unit is fixed at the bottom of the divider and can easily be disassembled. The reference divider is erected on a four-arm base equipped with castors. It is designed for indoor design. Subject to change without notice.

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Technical Data cont. duty Rated DC Primary Primary Primary Damping voltage capacitance resistor parallel resistor cont. duty resistor Front-chopped lightning impulse voltage Measurement uncertainty < ±3% LI full, SI, AC, DC Measurement uncertainty < ±3% Ratio for impulse voltages 500 : 1.4 * Ratio of AC, DC voltages (RCZ type) 180:0.14 * Relative humidity <95% non-condensing Step response The unit step response of the dividers is adjusted to meet the Instrument impedance Optimised for instrument impedances of 1M£J / 30 pF. * The divider ratio is designed to achieve an output voltage of...

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R 500 REF, RCZ 500 REF 2Pages

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R 500 REF, RCZ 500 REF
2Pages