FURUTEC - Konia Group

Verification of the Effectiveness of the Protective Circuit
This test is conducted in 2 sessions. The first test is to verify effective connection between the exposed conductive parts of busduct
and the protective circuit, where the resistance between the incoming protective conductor and the relevant exposed conductive
part must not exceed 0.1 Ω. The second test is to verify the short-circuit strength of the protective circuit, where the single phase
test between protective conductor and the nearest phase conductor. The value of the prospective short circuit current used is 60%
of the value of the prospective short circuit current of the 3 phases short circuit withstand test of the busduct system.
Verification of Clearance and Creepage Distances
Creepage is the shortest path between two conductive parts (or between a conductive part and the bounding surface of the
equipment) measured along the surface of the insulation. A proper and adequate creepage distance protects against tracking, a
process that produces a partially conducting path of localized deterioration on the surface of an insulating material as a result of
the electric discharges on or close to an insulation surface. Clearance is the shortest distance between two conductive parts (or
between a conductive part and the bounding surface of the equipment) measured through air. Clearance distance helps prevent
dielectric breakdown between electrodes caused by the ionization of air. The dielectric breakdown level is further influenced by
relative humidity, temperature, and degree of pollution in the environment. For this verification test, the minimum distance for the
creepage and clearance involves phase to phase & phase to earth of the busduct system.
Verification of Structural Strength
The verification of structural strength has been conducted on a horizontal installation of HP-Busduct. Mechanical loads are
applied to both HP-Busduct feeder and joint section for the duration of five minutes.
Verification of Crushing Resistance
A HP-busduct straight feeder, which is supported horizontally on a flat surface, is tested and verified to withstand a crushing force
of at least four times its linear mass (kg/m) for the duration of five minutes on minimum four different locations of the busduct.
08 | TESTING & CERTIFICATION