1.5kVA to 50kVA AC Power Frequency Non-Partial Discharge Testing Transformer
Product Description
I. Overview To accommodate power frequency voltage tests for electrical equipment of various voltage levels and capacities, our company manufactures power frequency no-partial discharge test transformers of various specifications for customers to choose from based on their needs. Power frequency test transformers are divided into iron-cased and insulating cylinder types, each of which further includes single-stage and cascade types. Iron-cased transformers are suitable for applications with lower partial discharge requirements, while insulating cylinder transformers are suitable for those with higher partial discharge requirements. Single-stage transformers are suitable for low voltage and high capacity applications, whereas cascade transformers are suitable for high voltage or low voltage, small capacity applications that are convenient for portability. II. Operating Conditions
Altitude not exceeding 1000 meters
Ambient air temperature ranging from -5°C to +40°C, with relative humidity not exceeding 85% (+20°C). When transitioning from one environment to another, the temperature difference should not exceed 15K.
No conductive dust present
No fire or explosive hazards
No gases that corrode metals or insulation present
No locations with severe vibration or collisions
Ground surface unevenness not exceeding 3 degrees
Power supply voltage waveform is sinusoidal, with a waveform distortion rate less than 3%, and a frequency of 50Hz. The power supply side should be protected from external atmospheric overvoltage.
Equipped with a reliable grounding point, with a grounding resistance less than 0.5Ω
III. Technical Parameters
Partial discharge (Insulating cylinder type) For rated voltages (UH) ranging from 10 to 200KV, the partial discharge at 100% UH is ≤3-10Pc
Allowed operating time: Under rated voltage and current, the test transformer can operate for 30 minutes starting from ambient temperature. It can operate continuously at two-thirds of the rated voltage and current.
Impedance of a single test transformer is 3%-12%
Waveform distortion rate <3%
Other parameters comply with the JB/T9641-1999 "Test Transformers" standard.
Company Profile
Company Information
HuaZheng Electric Manufacturing (Baoding) Co.,Ltd is the supplier of the State Grid in China.It means we are the supplier of the Chinese Government.And our products spread throughout the whole China.
What's more, our customers come from different countries like America, England, Bulgaria, Brazil, Chile, Malysia, Vietnam and so on.
Our main products are Insulation Oil Tester, Cable Fault Locator, Power Quality Analyzer, High Voltage Generator, High Voltage Capacitor, Testing Transformer and so on.
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