POLIM-H ..-.. is a surge arrester with metal-oxide (MO) resistors without spark gaps directly molded in silicone housing, grey color, designed and tested according to IEC 60099-4; and it fulfills the requirements of ANSI/IEEE C62.11. POLIM-H ..-.. complies also with the following standards:
- Shock and vibration tested according to IEC 61373
- Fire and smoke behaviour tested and classified according to EN 45545-2
This surge arrester is used for protection of medium voltage systems against overvoltages from atmospheric discharges and switching conditions.
Applications
- Power transformer, medium-voltage terminal, star point
- Arc furnace transformer
- Large size power generator
- Traction systems – fixed installations
- Rolling stock and high-speed trains
- Capacitors and capacitor banks, high capacity
Why Hitachi Energy?
- Over 100 years of experience in overvoltage protection and more than 30 years with silicone insulation
- Local and global Hitachi Energy application support
- Proven safe short-circuit current design
- Design life of more than 30 years
- Own production of metal-oxide (MO) resistors
- Excellent protection level with low residual voltage
- High energy withstand capability
- UV resistant silicone housing with excellent pollution performance
- Maintenance free
- Mechanically strong design
- Stable against shock and vibration
- High speed train tested