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    HT SWITCHGEAR

    This specification covers the supply of 11KV indoor

    • Metal-enclosed switchgear according to IEC publication-298.
    • The panel shall be used for the secondary distribution sub-station
    • Up to 12KV, suitable for an ambient temperature of 450C, and rated rupture capacity of 350 MVA complete.
    • With all accessories, diagrams, levels, wirings & terminals.
    • The 11 KV, 350 MVA rated switchboard would comply
    • All cubicles are fitted with security interlocks and earthing switches.

    Product Details

    High-Tension (HT) switchgear is an essential component of electrical substations and plays a crucial role in the transmission and distribution of electricity at high voltage levels. The following are some common specifications that are typically included in the HT switchgear:

    1. Voltage Rating:
    The voltage rating of HT switchgear indicates the maximum voltage level that the equipment can handle. It is typically specified in kilovolts (kV) and should be selected based on the requirements of the power system.
    2. Current Rating:
    The current rating specifies the maximum continuous current that the HT switchgear can carry without exceeding its thermal limits. It is generally measured in amperes (A) and is chosen based on the expected load currents.
    3. Short-Circuit Rating:
    The short-circuit rating of HT switchgear refers to its ability to withstand and interrupt high fault currents safely. It is crucial for protecting the equipment and ensuring the safety of personnel during fault conditions. The short-circuit rating is specified in terms of the maximum fault current level and the duration of the fault.
    4. Number of Poles:
    The number of poles in HT switchgear indicates the number of separate circuits that can be controlled or protected by the equipment. Common configurations include three-pole and four-pole switchgear.
    5. Circuit Configuration:
    The circuit configuration specifies the type of switchgear arrangement, such as a ring main unit (RMU), circuit breaker panel, or load break switch arrangement. The configuration is selected based on the specific application and system requirements.
    6. Type of Switching Mechanism:
    HT switchgear can have different types of switching mechanisms, including air circuit breakers (ACBs), vacuum circuit breakers (VCBs), or SF6 (sulfur hexafluoride) circuit breakers. Each type offers different features and performance characteristics.
    7. Control and Monitoring System:
    Modern HT switchgear often includes advanced control and monitoring systems for remote operation, monitoring, and fault diagnosis. These systems provide real-time information about the status of the switchgear and enable efficient maintenance and troubleshooting.
    8. Protection and Relay Coordination:
    HT switchgear is equipped with protection devices and relays that detect abnormal conditions, such as overcurrents, short circuits, and earth faults. The specifications should include details of the protection functions, coordination settings, and communication interfaces.
    9. Enclosure Type:
    The enclosure of HT switchgear ensures the safety of personnel and protection against environmental factors. Common enclosure types include indoor metal-clad, outdoor metal-enclosed, or gas-insulated switchgear (GIS) enclosures. The enclosure type should be selected based on the installation environment and specific requirements.
    10. Compliance Standards:
    HT switchgear should comply with relevant industry standards and regulations, such as IEC (International Electrotechnical Commission) standards or specific national standards, depending on the location of the installation. Compliance with these standards ensures the quality, performance, and safety of the switchgear.

    It is essential to consult with electrical engineers, manufacturers, or experts in the field to determine the specific HT switchgear specifications required for a particular application. The specifications can vary based on the power system's voltage level, load characteristics, environmental conditions, and other project-specific factors.