Power
surge
prot­ection

 

Keeping people and prop­erty safe.

Power surges are the main cause of defects in elect­ronic devices – with claims of over 200 million euros per year. There­fore, power surge prot­ection devices are a must for safe elect­rical instal­lation: in all buildings, all over the world.

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What is surge prot­ection

Surge prot­ection devices (SPDs) protect elect­rical instal­lat­ions and term­inal equi­pment from overv­oltages. They serve for preve­ntive fire prot­ection, sign­ific­antly for object and building prot­ection, increase the avai­la­bility of the instal­lation and – that is the most impo­rtant - protect people from injury and worse.

Overv­oltages and phen­o­m­enal impacts

Overv­oltages can be very diffe­rent: they can last micro­s­ec­onds or days, have ampl­itudes of milli­v­olts or thous­ands of volts. What makes these tran­s­ient surges dang­e­rous is the sudden voltage rise and the high voltage diffe­rence.

The most vuln­e­rable

- All elect­rical appliances in the home and office, public buildings and national monuments: general disruption and repl­ac­e­ment costs (if not covered by insurance)

- Cell towers: network downtime

- IT server centers: affecting data tran­sfer and storage

- Spec­i­a­l­ized buildings: using sens­itive elect­ro­nics such as labo­ratories and banks

- Ante­nnas: signal tran­sm­ission disrupt­ions

The main causes of overv­oltages

- Light­ning strikes (LEMPs)

- Elect­rostatic disc­harges (ESDs)

- Switc­hing operat­ions (SEMPs)

The three types of surge prot­ection devices

Type 1: Light­ning current arrester

Diverts the energy content of the light­ning and reduces the residual voltage to < 1,500 V.

Type 2: Surge prot­ection

Reduces the remaining overv­oltage to < 1,500 V.

Type 3: Surge prot­ection for term­inals

Reduces the remaining overv­oltages to < 1,500 V, which is uncrit­ical for end devices.

Prot­ection
techn­o­logy
from a single source

With Hager’s surge prot­ection range, all normative requirements can be impl­eme­nted simply and safely.

The range incl­udes combined SPDs Types 1, 2 and 3 for all main types, as well as SPDs for the prot­ection of mult­i­m­edia and commun­ic­ation devices.

 

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Combine and rein­f­orce

Current Hager surge prot­ection devices are fully comp­atible with existing products and can be easily combined in existing projects without any issues.
Surge prot­ection devices of Type 2 are installed downstream of a Type 1 or an installed combined surge prot­ection device. This is usually done at distrib­ution level - i.e. in sub-distrib­ution boards from which the final circ­uits are supp­lied.
Combined surge prot­ection devices (Type 1 + Type 2) are avai­lable with cutting edge Spark Gap Techn­o­logy. The main area of use is in the supply area of the elect­rical system.
Type 3 surge prot­ection devices are used for end-device prot­ection. Since they are installed in the vicinity of the device or system to be prot­ected, there are many designs for the Type 3. Inte­g­rated in SCHUKO® sockets, for DIN-rail mounting and for mounting in switch/branch boxes.

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prot­ection

Overv­oltage arresters protect against

tran­s­ient overv­oltages which may cause the dete­r­i­o­ration of elect­rical equi­pment and the dest­ruction of the elect­ronic comp­o­n­ents of the rece­i­vers. They can be used in all eart­hing systems (neutral point system).

Resid­e­ntial
building prot­ection

Light­ning prot­ection is not usually required for single-family homes. This means that often, no exte­rnal light­ning conductor is installed. In this case, only the IEC 60364-4-44 is applic­able for prot­ection against surges in this area. As the simp­lest way to comply with the normative mini­mums, Hager recom­mends instal­ling its combin­ation arresters in the mains-side near the service entrance. If the cable length of ten metres is exce­eded, for example to the sub-distrib­ution, the standard recom­mends addit­i­onal surge arresters Type 2 and Type 3.
verdeelsysteem univers N HS

Comme­rcial
building prot­ection

An increasing number of countries are impl­eme­nting inte­rn­at­ional standard­iz­ation requirements and are tran­s­lating those requirements to even stricter local standards, leading to SPDs as an obli­g­atory prere­quisite for new elect­rical instal­lat­ions.

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