Resistive voltage dividers have very good response parameters. Therefore they are used for measurements of full and front chopped lightning impulses or impulse voltages with steep wave fronts.

The transformation ratio and transfer behaviour of R divider fulfils the IEC 60060-2 requirements, in particular those with respect to measuring accuracy and dynamic behaviour. The divider components are designed in such a way that the transfer errors are negligible for lightning impulse shapes.

Resistive voltage dividers are generally used when an additional capacitance in the test circuit is not permissible due to the slowdown effect on the rise time. Therefore, it can’t serve as a load capacitor for the impulse generator.

The high voltage resistors made of CrNi wire are anti inductively wound. For dividers with a rated lightning impulse voltage above 200 kV the high voltage resistors are housed in cylinders made from glass fibre reinforced epoxy resin.

Above 150 kV rated lightning impulse voltage the dividers are equipped with toroidal HV electrodes to guarantee corona free operation.

The secondary unit is fitted with LEMO connector. It consists of resistors of low inductance arranged in a coaxial design. The unit is fixed at the bottom of the divider and can easily be disassembled.

The voltage divider is designed for indoor operation. Dividers above a rated lightning voltage of 200 kV are erected on a four-arm base equipped with castors