Careful attention has been paid to ergonomic design to ensure that the NSG 435 sits easily in the hand without being tiring or uncomfortable during long or repeated test procedures. The liquid crystal display panel is clearly visible at all times in the working position and all the controls are conveniently at the user’s fingertips.

The NSG 435 is powered by a rechargeable battery supply, so there is no separate high voltage generator or stiff connecting cable to hinder access to the EUT. The battery, which lasts for several days under normal test usage, can be easily interchanged and recharged in just three hours. Microprocessor-based control and a five-key pad give access to the comprehensive range of built-in functions. The liquid crystal display shows the operating status and all userprogrammed test parameters continuously. A discharge pulse counter is incorporated and a further handy feature is the provision of a preset counter for long duration tests and remote use.

The NSG 435 has its own high voltage generator producing pulses up to 16.5kV. In addition to the pre-programmed, standard IEC pulses, the user can create custom tests, using single or repetitive discharges with selectable discharge rates and manual or automatic polarity switching. A unique feature is the detection of a real or valid discharge thereby avoiding misleading discharge counts. This is especially important during long term and remote test set up. The NSG 435 also measures and displays the real flash over voltage during air discharge testing.

The NSG 435 comes with a 150pF/330½ discharge network for tests to IEC 1000-4-2, and a range of interchangeable discharge networks is available for other standards including EN, ANSI-IEEE, ISO, etc. The discharge voltage of up to 16.5kV for air discharges and up to 9kV for contact discharges ensures a comfortable margin over and above the values required for the standard tests.