J.S. Hamilton Poland S.A. Certification Body, based in Siemianowice Śląskie, with competences confirmed by the Polish Centre for Accreditation with Certificate AC149 for the needs of the power industry, carries out voluntary certification in the field of switchgear and controlgear.
A team of experienced specialists assesses products in the following areas, among others:
- low-, medium- and high-voltage switchgear,
- circuit breakers
- disconnectors and earthing switches
- disconnectors,
- fuses,
- contactors
- starters,
- transformers
- chokes,
- transformer stations.
Certification processes are conducted:
– within the scope of held accreditation according to PN-EN group standards: 60947, 61439, 61558, 62271,
– outside the scope of accreditation for compliance with standards and technical specifications as well as with the provisions of Polish and international law.
The testing laboratory with competences confirmed by the Polish Centre for Accreditation with Certificate AC1552 for the needs of the electrical and power industry carries out tests in the following scope:
- measurements of voltages and currents, direct and alternating,
- frequency, capacitance and inductance measurements
- resistance measurements and diode tests
- leakage resistance to earth, resistance of “man/shoe/floor” system, resistance between points,
- electrification, electrical insulation strength
- insulation resistance of cable lines, transformers, motors and other electrical equipment, also equipment used in telecommunications,
- insulation clearances
- capacity of cells and batteries, short circuit proofing of cells and batteries,
- protection against residual voltage
- continuity of protective circuitry and resistance of protective and equalising circuits,
- surface resistance RS, cross resistance RV, resistance between RP points of non-metallic materials,
- thermal – heating, temperature rise, maximum temperatures using contact and non-contact methods (thermal imaging), including heating tests on transformer substations,
- intrinsically safe systems,
- environmental tests – Trials: Cold, Dry Hot, Moist Hot Solid, Temperature Variation, Moist Hot Cyclic (12 h + 12 h cycle), Compound Temperature/Humidity Cyclic Test, Moist Hot Solid, Accelerated Test designed mainly for components, resistance to sudden temperature change and thermal shock,
- flammability testing including, but not limited to, oxygen index, flammability of electrical and
- fibre optics, flammability of plastics using a test flame, toxicity, flammability of electrical appliance casings,
- degree of protection provided by enclosures (IP code),
- degree of protection provided by the enclosures of electrical equipment against external mechanical impact (IK Code),
- salt chamber ageing tests,
- sinusoidal vibration,
- electromagnetic compatibility (EMC),
RoHS testing with regard to Directive 2011/65/EU on the restriction of the use of certain hazardous substances such as: lead, mercury, cadmium, chromium (VI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), di 2-ethylhexyl phthalate (DEHP), benzyl butyl phthalate (BBP), phthalalandibutyl phthalate (DBP), phthalalandiisobutyl phthalate (9DIBP)
