1. What is Surge Protective Devices(SPD)?

Surge Protective Devices are designed to protect against transient surge conditions. Large single surge events, such as lightning, can reach hundreds of thousands of volts and can cause immediate or intermittent equipment failure. However, lightning and utility power anomalies only account for 20% of transient surges. The remaining 80% of surge activity is produced internally. Although these surges may be smaller in magnitude, they occur more frequently and with continuous exposure can degrade sensitive electronic equipment within the facility.

Fig.1 SIGOLED 10KV Surge Protection Device for LED Street Lights

2. What are the lightning protection measures for LED street lights?

1) Install surge protective devices SPD together with LED drivers inside the LED Street lights.

2) LED drivers must be with grounding wire.

3) Lamp poles must be with well grounded.

4) Housing of LED lighting fixtures must be well grounded

References:
1.  IEC 61547:2020《Equipment for general lighting purposes - EMC immunity requirements》;

2. IEC 61000-4-5:2014《Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test》;

3. IEC 61000-4-2:2008《Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test》;

4. IEC 61000-4-9:1993《Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques - Section 9: Pulse magnetic field immunity test》.