Class 3 Station Class

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Class 3 Station Class Surge Arrester

Protection of HV networks and equipment from lightning and switching surge related overvoltages. Designed and optimised for outdoor use to protect HV switch gear, Transformer and
cable end terminations
Direct moulded housing to prevent moisture Ingress
Low residual voltages
Safe non shattering short circuit behaviour to higher current levels
Maintenance free
Hydrophobic silicon housing (tracking and erosion resistant)
Excellent cantilever and tensile performance
Quality design and manufacturing ISO 9001 and 14001 compliant
Tested in accordance with IEC60099-4 at independent accredited laboratories

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Technical Data

Material (porcelain or Polymeric)
Lightning impulse withstand voltage (BIL)0Um kV r.m.s - Lightning impulse withstand voltage of equipment (BIL) kV r.m.s
Creepage distance (mm/kV)
Maxiumum continuous operating voltage
System temporary over voltage
System temporay over voltage duration
Umax (maxiumum system phase to earth voltage in system) (kV)
Duty rating (kV) – “Duty cycle voltage” is a term used in IEEE standards; IEC equivalent would be as follows: Surge arrester rating (kV)
Line discharge class (1-5)
Energy capability (kJ/Kv at Ur)
Pollution performance 1-4/A-E(16,20,25,31,40/50mm)
Earthing system:multi earthed, effectivity earthed, resistive earthed, isolated, Reactance)
Fixing arrangements: Line termination, Earth termination, mounted arrangement.
Surge counters required?

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