CEN CENELEC - Page 1235/1255

• Norma Técnica HD 425 S1

  Title: Sound level meters
  Entity: CEN CENELEC
  Subject: Electroacoustics

• Norma Técnica HD 426.1 S1

  Title: Specification for ceramic and glass insulating materials; part 1: definitions and classfication
  Entity: CEN CENELEC
  Subject: Insulating gases

• Norma Técnica HD 426.2 S1

  Title: Specification for ceramic and glass insulating materials; part 2: methods of test
  Entity: CEN CENELEC
  Subject: Glass and ceramic Insulating materials

• Norma Técnica HD 426.3 S1

  Title: Specification for ceramic and glass insulating materials; part 3: individual materials
  Entity: CEN CENELEC
  Subject: Glass and ceramic Insulating materials

• Norma Técnica HD 427 S1

  Title: Specific safety rules for the installation of equipment for electric arc welding and allied processes
  Entity: CEN CENELEC
  Subject: Welding equipment

• Norma Técnica HD 428 S1

  Title: Three-phase oil-immersed public distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 24 kV
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.1 S1

  Title: Three phase oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV; part 1: general requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.2.1 S1

  Title: Three phase oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 2: Distribution transformers with cable boxes on the high voltage and/or low voltage side - Section 1: General requirements
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.2.2 S1

  Title: Three-phase oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 2: Distribution transformers with cable boxes on the high-voltage and/or low-voltage side - Section 2: Cable boxes type 1 for use on distribution transformers meeting the requirements of HD 428.2.1 S1
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.2.3 S1

  Title: Three-phase oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 2: Distribution transformers with cable boxes on the high-voltage and/or low-voltage side - Section 3: Cable boxes type 2 for use on distribution transformers meeting the requirements of HD 428.2.1
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.3 S1

  Title: Three phase oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV; part 3: supplementary requirements for transformers with highest voltage for equipment equal to 36 kV
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.4 S1

  Title: Three phase oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV; part 4: determination of the power rating of a transformer loaded with non-sinusoidal currents
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 428.6 S1

  Title: Three phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 6: Requirements and tests concerning pressurised corrugated tanks
  Entity: CEN CENELEC
  Subject: Transformers. Reactors

• Norma Técnica HD 429 S1

  Title: Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
  Entity: CEN CENELEC
  Subject: Insulating materials in general

• Norma Técnica HD 430 S1

  Title: Topflash/flipflash photographic flash lamp array
  Entity: CEN CENELEC
  Subject: Fluorescent lamps. Discharge lamps

• Norma Técnica HD 431 S1

  Title: Block transfers in CAMAC systems
  Entity: CEN CENELEC
  Subject: Other standards related to nuclear energy

• Norma Técnica HD 432 S1

  Title: Definitions of CAMAC terms used in IEC publications
  Entity: CEN CENELEC
  Subject: Other standards related to nuclear energy

• Norma Técnica HD 433 S1

  Title: Safety requirements for arc welding equipment; coupling devices for welding cables
  Entity: CEN CENELEC
  Subject: Welding equipment

• Norma Técnica HD 434 S1

  Title: Ripple control receivers
  Entity: CEN CENELEC
  Subject: Telecontrol. Telemetering

• Norma Técnica HD 435 S1

  Title: Density meters utilizing ionizing radiation; definitions and test methods
  Entity: CEN CENELEC
  Subject: Properties of surfaces

• Norma Técnica HD 436 S1

  Title: Dimensions of optical fibres
  Entity: CEN CENELEC
  Subject: Fibres and cables

• Norma Técnica HD 437 S1

  Title: Standard conditions for use prior to and during the testing of solid electrical insulating materials
  Entity: CEN CENELEC
  Subject: Insulating materials in general

• Norma Técnica HD 438 S1

  Title: Method of test for electrical resistance and resistivity of insulating materials at elevated temperatures
  Entity: CEN CENELEC
  Subject: Insulating materials in general

• Norma Técnica HD 439 S1

  Title: Measuring methods for television tape machines
  Entity: CEN CENELEC
  Subject: Video systems

• Norma Técnica HD 440 S1

  Title: Test methods for electroheating installations with electron guns
  Entity: CEN CENELEC
  Subject: Electric furnaces

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