Avets Engineering India Private Limited

A High Voltage Electrical Isolator (also known simply as an Isolator Switch or Disconnect Switch) is a mechanical switching device used in high voltage electrical systems to safely isolate a part of the circuit for maintenance or emergency purposes. It ensures that a section of the electrical network is completely de-energized and visible as disconnected, providing safety for workers.

Key Features:

• Voltage Rating: Designed to operate at high voltages, typically ranging from several kilovolts (kV) to hundreds of kV.

• Function: Opens or closes a circuit under no-load conditions to isolate equipment such as transformers, circuit breakers, or transmission lines.

• Operation: Usually manually operated or motor-operated, with clear visible break to confirm disconnection.

• Safety: Provides a visible gap in the circuit for physical confirmation that the circuit is isolated.

• Construction: Robust and weatherproof, often installed outdoors on transmission and distribution substations.

• Types: Various designs like knife blade isolators, center-break isolators, pantograph isolators, and more, depending on application and voltage level.

Applications:

• Power generation plants

• Electrical substations

• Transmission and distribution networks

• Industrial high voltage equipment isolation

Benefits:

• Ensures safety during maintenance by physically isolating electrical equipment

• Prevents accidental energization of circuits

• Durable and reliable for harsh outdoor environments

• Facilitates sectionalizing and control of power systems