Station-class metal-oxide surge arresters protect transformers, breakers and busbars from lightning and switching overvoltages. Silverstone arresters use gapless MOV blocks with high energy absorption capability, available in porcelain and silicone-rubber housings with discharge counters, monitors and disconnectors.
Key Specifications
Type
Metal-oxide (MOV) gapless surge arrester
Class
Station class (HV) · distribution class (MV) · line type
Reference standard
IEC 60099-4
Housing
Porcelain · silicone rubber polymer
Energy capability
High-energy MOV blocks, class per duty requirement
Typical configurations shown. Final ratings, dimensions and test reports are confirmed per project datasheet — include your specification with the inquiry.
Typical Applications
Substation transformer protectionGIS / AIS bay protectionTransmission line surge protectionCapacitor bank protectionCable system protection
Frequently Asked Questions
How do I select the arrester rating for my system?
Send us your highest system voltage, grounding arrangement (effectively grounded or not), and insulation coordination study if available. Our engineers will propose the rated voltage, MCOV and energy class.
Porcelain or polymer housing — which should I choose?
Polymer housings are lighter, hydrophobic and safer under internal arc; porcelain suits conservative specifications and very high pollution with appropriate creepage. Both are available for the same electrical ratings.
Do arresters ship with test reports?
Yes, routine test reports per IEC 60099-4 accompany every batch; type test certificates are available on request.
