JB/T 7067-2002 in English

Scope

This standard specifies the definition, product specifications, performance parameters, usage conditions, technical requirements, test items and methods and markings, packaging, transportation, storage and random technical documents of column pressure regulators. This standard applies to dry-type self-cooling and oil-immersed self-cooling column regulators (column core) with a voltage level of 500V and below, a rated frequency of 50Hz, continuous operation, and stepless adjustment. This standard only sets out requirements for the special parts of column voltage regulators, and the remaining parts should comply with the relevant provisions of JB/T 8749-1998 "General Technical Requirements for Voltage Regulators". For column voltage regulators whose rated capacity or voltage specifications are not included in this standard, the relevant provisions of this standard may also be used with reference. Column voltage regulators are mainly used in various situations where the load voltage waveform distortion is small and the voltage can be adjusted steplessly and smoothly.