TVA1421 SeriesMiniature Precision AC Voltage and Current Transformers

LI031V6/2007

1．Features

① Used as either a voltage transformer or as a current transformer;

② Being able to be directly welded on PCB;

③ High in accuracy, wide in sampling range and flexible in applications;

④ Fully-encapsulated, strong mechanical and environmental endurance, strong dielectric strength and elegant outline;

 

2．Ambient Conditions

① Ambient temperature: -55℃～+85℃;

② Relative humidity: ≤90% at 40℃;

③ Atmospheric pressure: 860～1060mbar(about 650～800mmHg);

 

3． Range of working frequency: 20Hz~20kHz;

 

4．Insulation Rating: Class F (155℃)

 

5．Safety Features:

① Dielectric resistance: >1000MΩ in normal condition;

② Insulation withstand voltages: 3000V 50Hz/1min (used as a voltage transformer);

6000V 50Hz/1min (used as a current transformer);

③ Fire retardancy: In conformity with UL94-Vo.

 

7．Typical usage and Technical Parameters

① Used as a voltage transformer

TVA1421 model is actually a current-type voltage transformer when it is used as a voltage transformer. Fig.1 and Fig.2 show the two typical applications, respectively. The parameters are shown in Table 1.