ICNEA 3821—Transformer, rectifier and inductor manufacturing

Where 3821 sits

1. C Manufacturing industry
2. 38 Electrical machinery and equipment manufacturing industry
3. 382 Power transmission and distribution and control equipment manufacturing
4. 3821 Transformer, rectifier and inductor manufacturing

What 3821 includes

• Refers to the manufacture of power electronic equipment and transformers such as transformers and static converters.
• Includes manufacturing activities for the following transformers, rectifiers and inductors：
• Transformers: power transformers, converter transformers, dry transformers, test transformers, power transformers, adjustable power transformers, other transformers;
• Transformers: voltage transformers, current transformers, combined transformers;
• Static converter;
• Stabilized power supply: stabilized power supply for computers, DC stabilized power supply, AC stabilized power supply, and other stabilized power supplies;
• Steady current power supply, uninterruptible power supply (UPS);
• Semiconductor converter: single crystal semiconductor rectifier, polycrystalline semiconductor rectifier;
• Gas discharge converters: mercury arc rectifiers, thermion rectifiers, electrolytic rectifiers;
• Inverter: semiconductor inverter, self-synchronous voltage source inverter, dual-mode inverter, other inverter;
• AC converter, AC frequency conversion equipment, DC converter;
• Other stationary converters;
• Reactors: shunt reactor, series reactor, yoke current saturation reactor, current limiting reactor, filter reactor, start-up reactor, self-saturation reactor, amplitude modulation reactor, test reactor, rectifier balanced reactor, rectifier flat wave reactor, Yin Ni reactor, grounding reactor, intelligent reactor, energy-saving reactor, Other reactors;
• Inductors: fixed and color code inductors, laminated chip inductors, wire wound chip inductors, energy-saving inductors, LC filters, other inductors;
• Transformer, rectifier and inductor parts;
• The following product manufacturing activities are included in this category;
• High-performance frequency conversion speed control equipment;
• Lightweight new transformer;
• Intelligent large transformer;
• Intelligent DC converter transformer;
• Intelligent reactive power compensation equipment;
• High-power charge and discharge controller;
• Bidirectional converter;
• Energy-saving transformer;
• Static energy-saving converter;
• Inverter;
• Harmonic control equipment;
• Small and medium-power rare earth permanent magnet coreless motor;
• Variable pole starter non-slip ring winding rotor induction motor;
• Small and medium-sized three-phase asynchronous motors (energy efficiency levels 1 and 2);
• High-voltage frequency conversion speed control technology device;
• Plant insulating oil transformer;
• Amorphous alloy transformer;
• Dry half-core reactor;
• Shell type electric furnace transformer;
• Three-dimensional coil iron core dry-type transformer.

3821 in other systems