Grounding Switches
Grounding Switches
EMSPEC offer a wide range of grounding switches in stand-alone or built-on configuration. All EMSPEC ground switches are built on the keep it simple principle, through innovative design to provide high performance and reliability. Only the best materials are used for its fabrication. All parts are fabricated from extruded aluminum or machined from solid billet materials, such as 304 stainless steel and hard drawn copper. All parts are machined from solid billet materials, such as 304 stainless steel and hard drawn copper.
Ratings: 15kV-550kV, up to 63kA 3sec (164kA Peak)
- Robust
- Reliable
Key features of our Grounding Switches
High strength hot dip galvanized structural steel base frame. Maintenance-free dry lubricant bearings. Hardware on live parts are made of non-magnetic materials (mainly stainless steel). Contacts are made of hard drawn with silver-plating available as an option.
All ground switches may be provided as stand alone or built-on to one of our disconnect switches. Both parallel and perpendicular mounting configurations are available.
Image on the left shows an ST18503 with the 3 blades contained within the support structure girder . The center image shows the same ST18503 model combined to a 145kV double end break D.S.. The motion of the ground blade is paralelle to the base frame of the main switch. The image on the right shows a GSA36135 double motion perpen- dicular grounding switch.
Achievements
Discover how our technology performs in real‑world conditions across some of the most demanding high‑voltage applications. Each achievement highlights a specific project where Hapam disconnect switches delivered exceptional reliability, efficiency and durability, from SVC installations in Canada to utility and transmission projects worldwide.
A Century of Power
Installation and maintenance
At Hapam, we are committed to ensuring long‑term reliability and performance for every high‑voltage disconnector and earthing switch we deliver. Our equipment is designed for durability, easy installation and minimal maintenance, but ageing grid infrastructure can introduce new challenges over time. That’s why we provide fast, efficient retrofit solutions, global service support and access to expert technicians across all regions. From spare parts and installation guidance to testing, technical assistance and emergency repairs, our service organization is ready to support you throughout the entire lifecycle of your equipment.
Looking for a high‑voltage solution?
We design and manufacture reliable high‑voltage disconnectors and earthing switches used worldwide. Whether you need technical advice, a custom configuration or full project support, we are here to assist you.