OPTIMIZING SPD CONNECTIONS FOR EFFECTIVE PROTECTION

In the world of surge protectors, one of the significant challenges is managing the length of connections. It's essential to ensure that the sum of the cable lengths does not exceed 50 cm, from the phase derivation to the surge protector terminals to the equipotential grounding connection.

1. Maximizing Protection Effectiveness

Every meter of cable adds a voltage drop of 1000 volts in high frequency (1 micro Henry per meter), which adds to the Protection Level Up provided by the SPD. To ensure optimal protection with the lowest possible Up, it's crucial to avoid a reduction in performance due to improper wiring.

2. Addressing Practical Challenges

In some situations, containing cable lengths can be extremely challenging, such as in small resin panels or metal cabinets with space limitations. In such cases, there are practical solutions:

• V Connection (In and Out): Using double terminals, a V connection can be made to cancel out the inductive drop of the cable. This approach is often facilitated by surge protectors designed specifically for this configuration.

• Second Vertical Ground Bar: Adding a second vertically positioned ground bar near the surge protector can significantly reduce the length of connections, improving protection effectiveness.

To optimize electrical system protection, it's essential to adopt practical and intelligent solutions to manage the length of SPD connections.

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