Medium Voltage Panels

Johns Electric is one of the best Outdoor SF6 gas circuit breaker, Oil cooled PT and CT suppliers in India. All our panels fully comply with all regulatory requirements and are fully tested. Every product is supplied according to customer specifications.

1. ABB make Outdoor Type SF6 Circuit Breaker
2. 33/11 KV Outdoor Oil Cooled PT
3. 33/11 KV Outdoor Oil Cooled CT

ABB make circuit breaker solutions for Medium Voltage substations and pole mounted applications for outdoor installations. ABB make outdoor SF6 gas circuit breakers provides customers with the full range of standard designs with the latest state of the art switching developments for increased safety and reliability.

• Maintenance-free poles made with porcelain insulators, assembled by means of flanges with terminals.
• Gas pressure control device for each pole.
• Inspection window in the pole supporting casing near the operating mechanism signals.

33/11 KV Outdoor Oil Cooled current transformers (CT) in both type i.e. Live Tank Design and Dead Tank Design. CT are used to reduce the line current to a value which is suitable for standard measuring Instruments, relays etc as well as protect them.

• Withstand operational voltage and over voltage in the line.
• Withstand rated primary current in continuous operation without exceeding maximum allowed temperature rise.
• Sustain thermal and mechanical stresses developed due to system fault current.
• Feed current to external circuit with specified accuracy at specified primary currents.

33/11 KV Outdoor Oil Cooled potential transformers (PT) in both type i.e. Live Tank Design and Dead Tank Design. PT are used to reduce the line voltage to a value which is suitable for standard measuring Instruments, relays etc as well as protect them.

• Withstand operational voltage and over voltage in the line.
• Reduce the line voltage to a value which is suitable for standard measuring instruments, relays etc..
• Isolate the measuring instruments, meters relays etc. from high voltage side of an installation.
• Sense abnormalities in voltage and give voltage signals to protective relays to isolate the defective system.