How To Install Surge Protection Device
General operation of a protector
A transient overvoltage protection device acts as a voltage-controlled switch and is installed between the activated conductors and the earth in parallel with the equipment to be protected. When the grid voltage is lower than its activation voltage, the protector acts as a high impedance element, so that no current flows through it. Conversely, when the network voltage is greater than the activation voltage, the protector acts as an element of almost zero impedance, bypassing the overvoltage to earth and preventing it from affecting the receivers.
Selection of a surge arrester
When selecting a transient overvoltage protection device you should consider the topology and rated voltage of the electrical network. In addition to the polarity of the protection, these characteristics will condition the value of the maximum operating voltage of the latter and the safety margin must be considered greater than the nominal voltage of the network.
On the other hand, depending on the exposure of the installation to the effects of lightning and transient overvoltages, protective devices with different discharge capacities will be required. In this sense, we are used to distinguishing between protection against the direct impact of lightning (conduit) and the indirect impact of lightning (electromagnetic induction).
How To Install Surge Protection Device
General operation of a protector
A transient overvoltage protection device acts as a voltage-controlled switch and is installed between the activated conductors and the earth in parallel with the equipment to be protected. When the grid voltage is lower than its activation voltage, the protector acts as a high impedance element, so that no current flows through it. Conversely, when the network voltage is greater than the activation voltage, the protector acts as an element of almost zero impedance, bypassing the overvoltage to earth and preventing it from affecting the receivers.
Selection of a surge arrester
When selecting a transient overvoltage protection device you should consider the topology and rated voltage of the electrical network. In addition to the polarity of the protection, these characteristics will condition the value of the maximum operating voltage of the latter and the safety margin must be considered greater than the nominal voltage of the network.
On the other hand, depending on the exposure of the installation to the effects of lightning and transient overvoltages, protective devices with different discharge capacities will be required. In this sense, we are used to distinguishing between protection against the direct impact of lightning (conduit) and the indirect impact of lightning (electromagnetic induction).
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