Surge protection device examination and their testing is the only way for ensuring and verification of their supposed endurance and serviceability under the hardest operation conditions. A new product final finish and all of its important components are examined within the scope of the type tests and the certification procedure.
Self-tests are performed with help of the surge generators, which in a way „substitute“ the current pulses of a natural character under a defined conditions. Testing wave shapes are set by even further connecting standards, particularly EN 616 43-11, IEC 62 305, IEC 60-1 and CSN 34 5640.
Only a few working places, equipped with the wave shape generators 8/20μs, are situated in the Czech Republic. Mostly only with max. operational capacity up to Imax = 10kA(8/20) or 20kA(8/20). The only one working place in the Czech Republic is equipped with the currents generators with wave shape 10/350μsec. Namely, it is Hakel’s test room in Hradec Kralove, which has at its disposal such generator with operational capacity Iimp = up to 210kA(10/350).
This test room has even at its disposal two testing current pulse generators with operational capacity Imax = 60kA(8/20) and Imax = 240kA(8/20). Above mentioned testing devices are showed on the following two pictures.
HAKELGUN 200BB Lightning current generator with the
HAKELGUN 240 Testing current pulse generator with the operational capacity Iimp= up to 210kA(10/350. operational capacity up to Imax= 240 kA (8/20).
The following five pictures give you a well arranged information about the most used test impulse wave shapes according to IEC, EN, CSN standards, alternatively acc. to ANSI standard for the SPD testing intended for a use in a low voltage distribution networks.