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DVDI Series Miniature Precision AC Voltage and Current Transformers
DVDI系列卧式穿芯-1.gif
DVDI Series Miniature Precision AC Voltage and Current Transformers
1. Can be used as both a voltage transformer and current transformer;
2. Fully enclosed, good mechanical and environmental performance, high voltage isolation capability, aesthetically pleasing appearance;
3. Horizontal core threading, direct soldering installation on printed circuit board;
4. Lead pitch arranged in 2.54mm grid, meeting computer board requirements;
5. Small and lightweight, high accuracy, wide sampling range, flexible application.
DVDI系列 General Technical Specifications for Standard Products:

1Features

① It can be used as either a voltage transformer or a current transformer.

② It is fully encapsulated, has strong mechanical and environmental endurance, strong dielectric strength, and an elegant outline.

③ It is capable of being directly welded onto a PCB.

④ It has a pin-grid of 2.54mm, which meets the requirements of computerized board arrangement.

⑤ It is lightweight, small in size, highly accurate, has a wide sampling range, and is flexible in its applications.

 


2Ambient Conditions

① Ambient temperature: -55℃+85℃;

② Relative humidity: ≤90% at 40℃;

③ Atmospheric pressure: 8601060mbar

(about 650800mmHg).

 

3Operating Frequency Range: 20Hz~20kHz

 

4Insulation Thermal Class: Class B (130℃)

 

5Safety Features:

① Dielectric resistance: >1000MΩ in normal condition;

② Insulation withstand voltages: 3KV 50Hz/1min (used as a voltage transformer);

6KV 50Hz/1min (used as a current transformer);

③ Fire retardancy: In conformity with UL94-V0.

 

 

6Outline Drawing, Installation Dimension and Coil Diagram:(Tolerance±0.5mm)






image.png


7Typical Usage and Technical Parameters

① Used as a voltage transformer

DVDI 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 listed in Table 1.

image.png

Table 1

Usage

Model

Input Voltage

Output Voltage

Phase Shift

Non Linearity

Linear Range

Rated Current

Withstand Voltage

Used as in Fig.1

DVDI-001

≤1000Vac

≤1.2V

≤30’

≤0.2%

1.5 times of the rated value

6mA/6mA

≥3KV

DVDI-001M

≤1000Vac

≤1.5V

≤40’

≤0.25%

Used as in Fig.2

DVDI-001

≤1000Vac

≤1/2 IC’s power supply

≤5’

≤0.1%

2 times of the rated value

DVDI-001M

≤1000Vac

≤5’

≤0.1%

 

 

② Used as a current transformer

With a through hole wire inserted as primary input, DVDI model can be used as a current transformer, which derives four applicable connections in output as shown in Fig.3, Fig.4, Fig.5, and Fig.6. The parameters are shown in Table 2 and Table 3.


image.png

 Table 2

Usage

Model

Rated Input Current

Rated Output Current

Rated Sampling Resistance

Rated Sampling Voltage

Phase Shift

Non Linearity

Linear Range

Withstand Voltage

Used as in Fig.3

DVDI-001

9A

6mA

200Ω

1.2V

≤30’

≤0.2%

1.5 times of the rated value

≥6KV

DVDI-001M

6mA

250Ω

1.5V

≤40’

≤0.25%

Used as in Fig.4

DVDI-001

18A

6mA

400Ω

2.4V

≤20’

≤0.2%

DVDI-001M

6mA

500Ω

3V

≤27’

≤0.25%

 

Table 3

Usage

Model

Rated Input Current

Rated Output Current

Rated Sampling Voltage

Phase Shift

Non Linearity

Linear Range

Withstand Voltage

Used as in Fig.5

DVDI-001

9A

6mA

≤1/2times of IC’s  power supply

≤5’

≤0.1%

≥2 times of the rated value

≥6KV

DVDI-001M

6mA

Used as in Fig.6

DVDI-001

18A

6mA

DVDI-001M

6mA

 

 

8Attention

Whether used as a voltage transformer or current transformer, it is fundamentally a current-type transformer in principle. Therefore, an open circuit is not permitted in the secondary circuit. For this reason, do not connect any fuse in the secondary circuit.




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