Disconnectors and Earthing Switches – Technical Features

Pelka disconnectors and earthing switches are designed and manufactured to provide safe operation, reliable earthing and long-term mechanical performance in medium-voltage power distribution systems.

The products enable the relevant sections of the system to be safely isolated under no-load conditions during commissioning, maintenance and testing activities. By providing reliable earthing of de-energised circuit sections, they contribute to improved personnel safety and operational security.

Pelka disconnectors and earthing switches are developed in accordance with the requirements of IEC 62271-102 for alternating-current disconnectors and earthing switches. The standard applies to indoor and outdoor AC disconnectors and earthing switches intended for rated voltages above 1 kV.

Key Features

• Safe isolation of circuit sections under no-load conditions
• Reliable earthing of de-energised circuit sections
• Indoor, outdoor and switchgear-mounted installation options
• Long mechanical endurance
• Robust mechanical construction designed for ease of maintenance
• Project-specific configurations and installation alternatives
• Suitable for integration into medium-voltage switchgear and power distribution systems

CESI Type Tests and Certificates

Certificates of conformity and short-time and peak withstand current test reports issued by CESI, Italy, are available for selected Pelka disconnector and earthing-switch models and ratings.

The available documentation covers indoor and outdoor product configurations at various rated-voltage and short-circuit withstand levels. The scope of each certificate and test report should be evaluated according to the relevant product type and rated characteristics.

Type Test Reports