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External Damped Capacitive Impulse Voltage Divider

External Damped Capacitive Impulse Voltage Divider
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External Damped Capacitive Impulse Voltage Divider - 1

TYPE CS Damped Capacitive Impulse Voltage Divider APPLICATIONS The damped-capacitive impulse voltage dividers series CS can be used to measure full lightning impulse voltages, tail chopped impulse voltages, switching impulses and AC voltages. They meet all requirements of IEC 60060-2 (1994), in particular those with respect to measuring accuracy and step response. At the same time they can be used as a basic load for impulse voltage generators. DESIGN Depending on the voltage rating, the high voltage part of the dividers consists of 1, 2 or 3 oil-filled capacitors which are housed in glass fiber reinforced cylinders. The damping resistance is placed as an external resistor on top of the uppermost capacitor. Above 600 kV (included) rated lightning impulse voltage the dividers are equipped with a toroidal high voltage electrode to guarantee corona-free operation. The secondary unit consists of a capacitor and a damping resistor of low inductance both arranged in a coaxial design. The unit is fixed at the bottom of the divider and can easily be disassembled. The voltage divider is erected on a four-arm base equipped with castors. CS 800-670 TECHNICAL DATA The type designation consists of the characters CS and two figures, e.g. CS 400-1000 the first figure represents the max. lightning impulse voltage in kV, the latter the capacitance in pF. Type Rated impulse Rated impulse voltage S.I. voltage L.I. 250 / 2500 s 1.2 / 50 s kV Clearance to walls and ceiling * with adequate additional secondary part type SEK W. ** higher voltages possible only with additional top electrode a brand of Haefely is a subsidiary of Hubbell Incorporated. Haefely has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice.

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External Damped Capacitive Impulse Voltage Divider - 2

DIMENSIONS & WEIGHT (APPROX.) Type Shipping volume DIVIDER RATIO The divider ratio is designed to achieve an output voltage of approx. 1400 V at rated lightning impulse voltage. This value was chosen as the standard input voltage for impulse measuring systems from Haefely Test in order to reduce the influence of electromagnetic interferences. Upon request the dividers can be supplied with other ratios or with an attenuator to match the input voltage of other measuring devices. STEP RESPONSE The unit step response of the dividers is adjusted to meet the requirements of IEC 60060-2 (1994):...

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