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[ Policies and Regulations of Chemical Machinery Equipment Network ] Transformers, also known as instrument transformers , are the collective name of current transformers and voltage transformers.
It can turn high voltage into low voltage and large current into small current for measurement or protection system.
Its function is mainly to convert high voltage or large current into standard low voltage (100V) or standard small current (5A or 1A, both refer to the rated value) in proportion to realize the standardization and small size of measuring instruments , protection equipment and automatic control equipment.
At the same time, transformers can also be used to isolate high-voltage systems to ensure the safety of people and equipment.
Chemical Machinery Equipment Network Policies and Regulations Chemical Machinery Equipment Transformer Measuring InstrumentsIt can turn high voltage into low voltage and large current into small current for measurement or protection system.
Its function is mainly to convert high voltage or large current into standard low voltage (100V) or standard small current (5A or 1A, both refer to the rated value) in proportion to realize the standardization and small size of measuring instruments , protection equipment and automatic control equipment.
At the same time, transformers can also be used to isolate high-voltage systems to ensure the safety of people and equipment.
Transformers first appeared at the end of the 19th century.
With the development of the power industry, the voltage and accuracy levels of transformers have been greatly improved, and many special transformers have been developed, such as voltage and current composite transformers, DC current transformers, and high-accuracy current ratio devices.
And voltage ratio device, high current laser type current transformer, electronic circuit compensation transformer, photoelectric transformer in ultra-high voltage system, and voltage and current transformer in SF6 fully enclosed combined electrical appliance (GIS).
In the electric power industry, what voltage level and scale power system should be developed, must develop the corresponding voltage level and accuracy transformer to meet the needs of power system measurement, protection and control.
With the development of the power industry, the voltage and accuracy levels of transformers have been greatly improved, and many special transformers have been developed, such as voltage and current composite transformers, DC current transformers, and high-accuracy current ratio devices.
And voltage ratio device, high current laser type current transformer, electronic circuit compensation transformer, photoelectric transformer in ultra-high voltage system, and voltage and current transformer in SF6 fully enclosed combined electrical appliance (GIS).
In the electric power industry, what voltage level and scale power system should be developed, must develop the corresponding voltage level and accuracy transformer to meet the needs of power system measurement, protection and control.
Recently, Zhejiang Province Transformer Product Quality Supervision Spot Check and Evaluation Rules Review Meeting was successfully held in Hangzhou.
At the meeting, five review experts from China Jiliang University, Yueqing Quality and Technical Supervision and Inspection Institute, Zhejiang Chint Instrument Co.
, Ltd.
, Zhejiang Tianji Transformer Co.
, Ltd.
, and the provincial * The Supervision and Random Inspection and Evaluation Rules" submitted the draft for review for discussion, review and voting, and unanimously agreed to pass the review.
At the meeting, five review experts from China Jiliang University, Yueqing Quality and Technical Supervision and Inspection Institute, Zhejiang Chint Instrument Co.
, Ltd.
, Zhejiang Tianji Transformer Co.
, Ltd.
, and the provincial * The Supervision and Random Inspection and Evaluation Rules" submitted the draft for review for discussion, review and voting, and unanimously agreed to pass the review.
This evaluation rule is applicable to the supervision and spot check of the product quality of current transformers and voltage transformers for power supply gas measuring instruments and electrical protection devices with a rated frequency of (15-100) Hz and a voltage level of 35kV and below in Zhejiang.
The formulation of the new version of transformer evaluation rules will further standardize product quality supervision and spot checks in the field of transformer production and circulation, effectively guarantee the integrity and fairness of supervision and spot checks, effectively serve market supervision, and contribute to the improvement of the quality of the transformer industry in Zhejiang Province and the health of the industry.
Rapid development provides strong technical support.
Rapid development provides strong technical support.
Original title: Zhejiang Province Transformer Product Quality Supervision and Spot Check Evaluation Rules Passed Examination and Approval
