Lightning Audits / Lightning Protection system audits and Maintenance
We perform lightning protection system audits, checks and recommendations according to SS 555 / CP 33 standards in Singapore.
In our lightning audits we perform our checks based on SS 555 part 3 and SS 555 part 4 as the guideline in Singapore.
All necessary data will be collected on site so that we can generate a comprehensive report and from the investigation we will professionally recommend what needs to be implemented and improved. The lightning audit report will also identify carefully if there are any issues that compromises the lightning protection system integrity so that immediate rectification can be carried out to protect human lives and critical equipment.
We follow guidelines according to
1) SS 555 part 4: 2018
Inspection of surge protection measures (SPM)
2) SS 555 part 3: 2018
Maintenance of LPS
3) CP 33: 1996
Code of practice for lightning protection (Incorporating amendment No.1 February 1999)
Above code of practice is used in Singapore for lightning protection.
Why is it important to have a lightning audit on your lightning protection system (LPS)
- Over time, metal components and parts can corrode. When that happens, the integrity of the lightning protection system is compromised.
- When you get a direct lightning strike onto your lightning protection system, parts like aluminium tape especially maybe warped or damaged. Copper tape suffer the same effects. Tape clips, square clamps etc. maybe dislodge. When a situation of such happens, you need to have a lightning audit immediately to check on the system and rectify them without delay.
- A periodic or lightning audit or lightning maintenance program is written as in SS-555 part 3 (Singapore) or IEC 62305-3 where maximum period of inspection of an LPS is stated depending on the protection level of the LPS
Below are some illustrations of damages caused by lightning strikes.
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Copyright notice:
These pictures are property of Sperry Power Pte Ltd. Any copy, redistribution or reproducing is prohibited. You may not distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system
If you are in need of a lightning audit, please do not hesitate to contact us with your inquiry. Our lightning audits are conducted using a comprehensive approach that takes into account various factors such as the nature of the facility, its location, and the type of lightning protection system in use.
Furthermore, we can assist you in planning and scheduling maintenance of your lightning protection system. It is recommended that a maintenance schedule be established to ensure that your system is functioning properly and to reduce the risk of damage to your facility. Our team of experts can work with you to create a customized maintenance plan tailored to your specific needs and budget.
SS 555 Part 3: 2018
E.7 Maintenance Of LPS
On a regular basis according to Table E.2.
Table E.2 – Maximum period between inspections of an LPS
| Protection level | Visual inspection year | Complete inspection year | Critical situations a b complete inspection year |
| I and II | 1 | 2 | 1 |
| III and IV | 2 | 4 | 1 |
a Lightning protection systems utilized in applications involving structures with a risk caused by explosive materials should be visually inspected every 6 months. Electrical testing of the installation should be performed once a year. An acceptable exception to the yearly test schedule would be to perform the tests on a 14 to 15 month cycle where it is considered beneficial to conduct earth resistance testing over different times of the year to get an indication of seasonal variations. | |||
The inspection frequencies given in Table E.2 should apply where no specific requirements are identified by the authority having jurisdiction.
NOTE If national authorities or institutions require regular tests of the electrical system of a structure, it is recommended to test the lightning protection system with regard to the functioning of the internal lightning protection measures, including the lightning protection equipotential bonding with electric systems at the same lime. Older installations, analogously, should be related to a lightning protection class, or the test intervals should be taken from the local or any other test specifications such as construction guide lines, technical regulations, instructions, industrial safety and protection of labour laws.
The LPS should be visually inspected at least annually. In some areas where severe weather changes and extreme weather conditions occur, it is advisable to visually inspect the system more often than indicated in Table E.2. Where the LPS forms part of the client’s planned maintenance programme, or is a requirement of the building insurers, the LPS may be required to be fully tested annually.
(Reference from SS-555 part 3 clause E.7)
Sources Of Surges
When a surge occurs during a thunderstorm, it is usually caused by direct strike, nearby lightning strike or distanced lightning strike. The high energy generated by impulse current and voltage are extremely dangerous and it is imperative to protect these electrical/electronic systems and equipment from the danger they are exposed to.
Taking into consideration that there is an earth impedance, a direct or nearby lightning strike will cause a high voltage drop from the earth impedance from a building to the surrounding earth distance. This voltage drop from the earth impedance from the building to the remote earth or potential difference will create an electromagnetic wave which will cause a surge into the electrical/electronic systems and equipment.
Distanced lightning strike can happen at a faraway distance and propagated to the point of protected devices. Lightning strikes at distanced overheard power lines, discharging at cloud to cloud are also causes of surge current to be induced into the electrical/electronic systems and equipment.
Surge can also be caused by switching operations.
- Making and breaking of electrical circuits with switchgear in power system having large inductance and capacitance.
(The operations of circuit breakers)
- Power transmission for opening and closing of electrical circuits on inductive loads.
(e.g. Transformers, motors etc. )
Lighting Audit And Rectification Works
- Lightning system audits and protection against lighting according to IEC 62305 / SS 555 / CP 33 standards
- Lightning Rectifications works according to IEC 62035 / SS 555 / CP33 standards
- Inspect and test lightning and surge protection devices and maintenance.
- Full range of Lightning and surge protection devices in accordance to IEC 62305 and SS-555 standards. Tested to IEC 61643-11 and IEC 61643-21 standards.
- Supply and install of lightning and surge protection devices as recommended in our audits.
- Turnkey project on total solution based on recommendation on lightning protection system (LPS) rectification works and protection of electrical and electronic systems.
- Deployment of local support.
- Site surveys to identify lightning issues.
- Fulfil customers with most suitable and cost-effective solutions
- Provide full technical support for all products supplied to our customers
- Testing and commissioning of lightning and surge protection devices installed
- Technical consultancy for lightning and surge issues
Our Expertise
Supply, install and implement lightning protection systems and solutions
a) A team of combined experience of over 50 years in lightning and protection. Full support on the latest IEC standards with one of our early founders in Europe who was in the IEC committee standards in Europe. We solve each lightning issue with a different approach according to standards that reduces their risk to lightning damaging their devices and protect human lives. All implementation and solutions will optimise the level of protection against lightning and surge issues.
Lightning and Surge protection Devices
b) Full range of surge protection devices to cater to every need that customers need for their systems. Components like Metal oxide varistors (MOV) degrade over time and will compromise on their performance. We are also able to perform a check on these lightning and surge protection devices on component levels to see if they have degraded over time.
Lightning Audits and Maintenance
c) We perform lightning audits, checks and recommendations according to SS 555 / CP 33 standards depending on when the building was commissioned. According to the test results, a comprehension and detailed report will be generated and recommendations will be made. Maintenance will also be recommended according SS 555 part 3 / E.7 maintenance and inspection of LPS table E.2 maximum period between inspection of inspection of an LPS
Lightning System Audits and Protection against lightning
- Lightning system audits and protection against lighting according to IEC 62305 / SS 555 / CP 33 standards
- Lightning Rectifications works according to IEC 62035 / SS 555 / CP33 standards
- Inspect and test lightning and surge protection devices and maintenance.
- Full range of Lightning and surge protection devices in accordance to IEC 62305 and SS-555 standards. Tested to IEC 61643-11 and IEC 61643-21 standards.
- Supply and install of lightning and surge protection devices as recommended in our audits.
- Turnkey project on total solution based on recommendation on lightning protection system (LPS) rectification works and protection of electrical and electronic systems.
- Deployment of local support.
- Site surveys to identify lightning issues.
- Fulfil customers with most suitable and cost-effective solutions
- Provide full technical support for all products supplied to our customers
- Testing and commissioning of lightning and surge protection devices installed
- Technical consultancy for lightning and surge issues
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