11KV panels

Station auxilary panel

11kV panels are medium-voltage switchgear assemblies used in electrical distribution systems to manage and control power flow at 11 kilovolt (kV) voltage level. The key components include circuit breaker for fault protection and switching, busbars ( for power distribution, protection relays (digital or electromechanical) for overcurrent, earth fault, and other protections, meters and indicators for monitoring voltage, current, power, and fault indications, and control and interlocking mechanisms for safe operation and maintenance.

A 110/11kV power transformer is a step-down transformer used to reduce the voltage from 110 kV to 11 kV for distribution to consumers. Its key components include a laminated steel core, primary and secondary windings made of copper, oil or gas insulation, a steel tank, bushings, a cooling system, and protection devices like Buchholz relay and temperature gauges. The transformer's rating is 12..5 MVA, with a voltage ratio of 110 kV / 11 kV, frequency of 50 Hz, .It features high efficiency , robust construction, multiple protection devices, and on load tap changers for voltage regulation, making it a reliable choice for substations, industrial plants, and grid connections.

Power Transformer

A Station Auxiliary Panel  is an electrical panel used in substations to supply power to auxiliary equipment, such as circuit breakers, motors, and lighting systems.For supplying power to battery charger and to power SF6 cicruit breaker. It is provided for For safe operation and maintenance.

The Incomer brings power into the 11kV panel from the transformer or grid, comprising a circuit breaker, current transformers (CTs), potential transformers (PTs), and protection relays, providing isolation, protection, and metering for the incoming power. The Bus Coupler connects two busbars (sections) in the 11kV panel, allowing transfer of load between busbars, isolation of one busbar for maintenance, and improving system reliability and flexibility, typically consisting of a circuit breaker, CTs, and protection relays.

Incomer &Buscoupler