ASUM Electric supplies, installs, and integrates a complete range of High Voltage (HV) devices essential for reliable power transmission across long distances. All devices are sourced from trusted global manufacturers and fully compliant with IEC, IEEE, and ANSI standards.
Types of High-Voltage Devices We Offer:
High-Voltage Circuit Breakers up to 400 kV
Used to interrupt fault currents and protect electrical systems from damage. Available in various types:
- SF₆ Circuit Breakers – Suitable for high-voltage transmission systems due to high insulation and arc-quenching properties.
- Vacuum Circuit Breakers (VCB) – Used in medium-voltage and industrial applications.
- Air-Blast Circuit Breakers (ABC) – For fast-acting high-voltage protection.
Disconnect Switches (Isolators) up to 245 kV
Enable safe disconnection of electrical circuits for maintenance and system reconfiguration. Types include:
- Center-Break Isolators
- Double-Break Isolators
- Pantograph Isolators
- Vertical and Horizontal Rotary Isolators
Surge Arresters (Lightning Arresters) up to 245 kV
Protect equipment from transient overvoltages caused by lightning or switching surges. Types include:
- Metal-Oxide (ZnO) Surge Arresters
- Silicon Carbide Arresters (SiC)
Instrument Transformers up to 245 kV
Used for measurement, protection, and control in high-voltage systems. Types include:
- Current Transformers (CTs) – Measure current for metering and protection.
- Potential (Voltage) Transformers (PTs or VTs) – Measure voltage for monitoring and control.
- Combined CT/PT Units – Space-saving solutions for compact substations.
Applications:
- Transmission Networks for grid reliability and protection.
- Power Generation Plants to manage switching, measurement, and protection functions.
- Industrial Facilities for heavy electrical loads and high-voltage operations.
- AIS & GIS Substations for switching, control, and safety in HV environments.
High Voltage Devices form the backbone of modern power infrastructure, ensuring safe, efficient, and uninterrupted energy transmission. With proven expertise and high-quality components, we deliver solutions that strengthen grid reliability and operational resilience worldwide.