MV PANEL

An HT (High Tension) panel serves as a critical switching point in an electrical system, allowing the HT power supply to be connected or disconnected from the load. HT cables are linked to circuit breakers on both the incoming and outgoing sides. The supply can be switched ON or OFF through electrically operated switches or push buttons integrated into the breaker. Once the supply is active, the metering system begins monitoring and recording electrical parameters depending on the specific panel design.

The HT panel not only functions as a switching unit but also provides essential protection against various electrical faults, depending on the fault protection relays installed. When a fault occurs, the panel automatically trips (shuts down), and the respective relay indicates the type of fault. Before restoring the HT supply, the fault must be identified and rectified. If the issue persists, the relay will not reset, and due to the interlocking system between the relay and the panel, the HT supply cannot be switched on again. This safety mechanism ensures that power is only restored once all faults are properly cleared, maintaining system reliability and safety.