Electrical Protection and Steel Manufacturing

Understanding the Essentials of Voltage Protection  


Over voltage protection is designed to protect industrial metal applications and tools from power surges. In fact, the power supply feature shuts down the supply of power output when the voltage exceeds a pre-set level. This protects the unit from overheating, along with protecting vital components and parts. Most power supplies (industrial plants, hydro-plants, and electrical power grids) utilize surge protection across their platforms and units. This prevents electrical surges from causing extensive damages to units, as well as employees and staff. 

Learn more about surge protection


When Do Power Surges Happen?


Power surge conditions can stem from power supply faults or mechanical issue. Similarly, they can occur due to external problems with distribution lines. If not contained or clamped in a timely and protective manner, overvoltage can lead to unit damages, fires and especially live wire electrical risks. Voltage protection kicks in when the set threshold of power is overdrawn or exceeds desired amounts. The control circuit shuts down the supply or diverts the extra voltage to other parts of the circuit -- such as the capacitor.


Surge Protection Circuit Characteristics


While system requirements tend to differ, there are some constants with surge protection across the board. From power plants and hydro-plants to electrical grids and suppliers, here are some of the common characteristics associated with circuit surge protection:


- Prevent excess voltage from damaging vital internal and external parts and components.

- Set the system or unit's desired voltage output, while implementing protective measures to clamp or shut down the power supply if it exceeds desired or required amounts.

- Excess voltage can be transferred to other parts of the unit that require more power for internal -- external applications.

- Protection circuits should not interfere with normal functions of systems, units and circuits. Similarly, protection circuits should not load the power supply can cause related voltage drops.

- Protection circuits should be able to distinguish between normal power fluctuations and dangerous over-voltage.

- Power supplies must be programmed to rapidly shut off or clamp down on excessive power. This prevents damage to power supply and downstream parts and component.

- System sensors must be fully functional to detect overvoltage risks within units and power output supplies. Similarly, the must be able to tell the difference between normal spikes or drops in power without actually being a cause for over protection.


Voltage protection is made up of components, integrated circuits and mechanical delay devices. These units are connected internally or externally based on the system's requirement and circuits involved.