SGDA impulse test systems can be used to generate impulse voltages simulating lightning strokes and switching surges. The total charging voltage ranges from 10 kV to 3’000 kV with a per-stage energy of 5 or 10 kJ. Due to its unique Δ−structure, the SGDA impulse generator are perfectly suited for transportation and on-site erection. The system has all our experience acquired, in building Impulse Generators since 1932, behind it.

A number of optional additional circuits and components can be included.

The electronic measurement and control components are designed and manufactured in-house in an ISO 9001 certified factory. Our many years of experience in dealing with electromagnetic compatibility of electronic devices in high voltage test bays provides the requisite expertise. A trouble-free operation and a long service life are thereby ensured.

The impulse test system operates under this control system which charges the impulse generator through the charging unit.

Charging time and charging voltage can be selected by the operator.

SGDA generators are based on MARX multiplier circuits. The stages in the impulse generator are connected and charged in parallel via the charging resistors.

Once the selected charging voltage has been reached, a trigger pulse initiates firing of the first spark-gap of the impulse generator. The resulting over-voltage triggers the successive stages. As all the spark-gaps fire, the stages which are in series now, add up to the charging voltage to reach the test voltage.

An impulse voltage divider reduces the impulse voltage to a value that the measuring and recording instruments can use.

The major impulse circuit elements such as capacitors and resistors are arranged in an optimum manner to simultaneously satisfy the two major requirements. smallest possible internal inductance and operating convenience.

Advantages

Applications