Being prepared when the next thunderstorm comes
The Expert in Testing Transient Protection
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Surge Protection Components
High voltage surges come online.
A common case:
A sophisticated system connected to the power grid and to telecoms network has been installed and approved. Everything is OK. During the next lightning season failures and service calls accumulate. Enforcedly, the system is fitted with surge protection. Everybody is content - at first. Some time later (approximately 2 years), trouble starts again.
Well-versed network operating companies
as EON or TELEKOM (formerly known as "Deutsche Bundespost") have experienced these problems for decades and have pursued straight strategies concerning maintenance.
Maintenance has to make provisions against surge protection devices loosing their protective function.
Level 0: do nothing
Protection devices once installed remain inside the system without any maintenance.
Level 1: Repair
Due to damages the surge protection devices involved will be exchanged.
The surge protection devices are exchanged on a firm schedule.
Level 3: Estimated overload
The surge protection devices are exchanged in consequence of an estimated overload. Sensors acqire and assess the impacts of pulse loads. The easiest method is to use a fuse activating a LED or a signal contact. There are also sophisticated systems to collect peak currents.
Level 4: Test
The surge protection components are tested on the basis of an inspection schedule and after special incidents (heavy thunderstorms).
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