Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures, Insulation resistance— 12 стр.
District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Part 2: Fitting and valve assembly of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene— 18 стр.
District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene; German and English version EN 489:2009— 57 стр.
District heating pipes - Pre-insulated flexible pipe systems - Part 1: Classification, general requirements and test methods; German version EN 15632-1:2009+A1:2014— 33 стр.
District heating pipes - Pre-insulated flexible pipe systems - Part 4: Bonded system with metal service pipes - Requirements and test methods; German and English version EN 15632-4:2009— 21 стр.
