15

Transformers and Instrument Transformers

Small Transformers incl. Inductors...

1511.17

Safety transformers

1511.21

Isolating transformers

1511.24

Choke coils

1511.27

Small power regulation transformers
— Bell-ringing transformers see 2449.17

1511.31

Autotransformers

1511.96

Customized chokes

1511.98

Customized low-voltage transformers

Ballasts (Transformers, Chokes, Electronic Ballasts etc.) for Lamps...

1515.17

Stray field transformers for high-voltage luminous discharge lamps

1515.23

Electronic ballasts for standard and compact fluorescent lamps

1515.25

Dimmable electronic ballasts

1515.27

Low-loss ballasts for standard and compact fluorescent lamps

1515.31

Ballasts for sodium vapour low-pressure lamps

1515.34

Ballasts for mercury vapour high-pressure lamps

1515.37

Ballasts for sodium vapour high-pressure and halogen metal vapour lamps

1515.38

Electronic ballasts for high-pressure discharge lamps

1515.41

Transformers for low-voltage halogen lamps (also electronic converters)

1515.44

Ignition devices for high-pressure gasdischarge lamps

1515.47

Energy saving apparatus for discharge lamps

1515.99

Other transformers and choke coils for discharge lamps

Power Transformers with Liquid Dielectric...

1522.17

Transformers up to 1600 kVA

1522.21

Transformers over 1600 up to 10000 kVA

1522.24

Transformers over 10000 kVA

1522.27

Pole-type transformers

1522.31

Mobile transformers

1522.99

Other power transformers with liquid dielectric

Dry Transformers incl. Inductors with Iron Core...

1524.11

Dry-type power transformers

Transformers for Special Purposes incl. Inductors...

1533.17

Transformers for traction and other vehicles

1533.21

Converter transformers

1533.24

Transformers for industrial furnaces and kilns

1533.26

Starting transformers

1533.27

Transformers for testing installations (testing transformers) and similar special purposes (e.g. electric filters, X-ray devices)

1533.29

Ignition transformers

1533.31

Explosion-proof transformers

1533.34

Toroidal core and column-type adjusting transformers

1533.37

Toroidal core transformers

1533.41

Transformers of cast resin

1533.44

Transformers for printed circuit boards

1533.47

Planar transformers

1533.51

Earthing quenching coils, plunger coils

1533.54

Protective reactance coils

1533.57

Control transformers

1533.61

Smoothing and symmetrization coils

1533.63

Line reactors, commutation reactors

1533.65

Motor chokes (du/dt filters)

1533.68

Filter reactors

1533.76

Transformers for the power electronics
— Welding transformers see 3315.44-3315.99
— AF transformers see 6731.34

1533.81

Transductors

1533.99

Other transformers

Instrument Transformers...

1536.10

Current transformers for low-voltage

1536.23

Current and voltage transformers for medium voltage (up to 52 kV)

1536.26

Current and voltage transformers for high-voltage over 52 kV

Accessories for Transformers and Instrument Transformers...

1599.17

Protective devices for transformers

1599.21

On-load and off-circuit tap changers for transformers

1599.24

Transformer bushings

1599.27

Toroidal tape and cut strip-wound cores

1599.31

Transformer laminations, stamped core laminations

1599.33

Transformer magnetic sheet steel (unpunched raw sheet steel)