Electrical systems and equipment of up to 1000 V and above 1.1. Insulation resistance; Testing of low voltage cables Testing of transformer meters Testing of power transformers Testing of switchgear assemblies Testing of rotating machines Testing of relay protective devices Testing of circuit breakers 1.2. Earthing systems resistance; Testing of panels Testing of power substations Testing of metal constructions Testing of machines and equipment 1.3. Impulse resistance of lightning conductors; Testing of lightning protection systems of buildings Testing of lightning protection systems of exterior equipment Testing of lightning protection systems of open spaces 1.4. Insulation testing of cable lines of up to 20kV and transformers by using raised constant voltage and raised voltage of industrial frequencies; 1.5. Loading equability of cable lines; 1.6. Active resistance Testing of transformer windings Testing of rotating machines Testing of contact systems of circuit breakers and disjunctors 1.7. Volt-ampere characteristics 1.8. Transformer connection group 1.9. Transformation factor 1.10. Dielectric breaking voltage of insulation liquids SERVICESElectrical construction Evaluation Electrical systems and equipment of up to 1000 V and above Electrical systems and equipment of up to 1000 V Physical factors of the work environment
