High Voltage, Current and Energy Non Linear Resistors

PD Devices provide a complete range of products, from low voltage current and energy through to high voltage current and energy applications. We provide solutions to many Megajoules of energy for the protection of electricity generators.

Other systems have been designed for the protection of transformers, alternators, and locomotive traction. An extensive range of distribution and transmission arrester blocks in metal oxide is also available.

Please outline your requirements on our 'enquiry sheet'

High Altitude Electro Magnetic Pulse (H.E.M.P.) Protection

PD Devices manufacture a wide range of products to protect against the effects of a high altitude (exoatmospheric) detonation of nuclear devices. The result of such an event is the generation of electromagnetic pulses which will induce a high voltage transient into exposed conductors. The EMP can affect several thousands of square kilometres, with a magnitude of tens of kilovolts. This could result in serious damage to insulation, cause breakdown of semiconductors and the consequent malfunction of critical equipment. Most notable would be the failure of the electricity supply and telecommunications systems.

We offer products to satisfy protection for most applications. From low voltage telecommunications and signal lines to high current and voltage installations. From 10v, 5A continuous with a maximum surge current capability of 4.5kA (8/20µs), up to and including 500v, 600A continuous, with a 50kA maximum surge. Thereby, also providing protection against lightning, other EMP and overvoltage transient sources.