DVDI Series Miniature Precision AC Voltage and Current Transformer

• Application: Electronic, Instrument
• Type: Combined Transformer
• Phase: Single
• Operation Condition: Indoor
• Usage: Measurement
• Winding Form: Small Fixed Type
• Model NO.: DVDI
• Insulating Medium: Epoxy Resin
• Installation: PCB Mounting
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Electromagnetic Type
• Trademark: Bingzi
• Origin: China
• HS Code: 8504311000

Product Description

1.Features
It can be used as either a voltage transformer or a current transformer.
It is fully encapsulated, has strong mechanical and environmental endurance, strong dielectric strength, and an elegant outline.
It is capable of being directly welded onto a PCB.
It has a pin-grid of 2.54mm, which meets the requirements of computerized board arrangement.
It is lightweight, small in size, highly accurate, has a wide sampling range, and is flexible in its applications.

2.Ambient Conditions
Ambient temperature: -55ºC~+85ºC;
Relative humidity: ≤90% at 40ºC;
Atmospheric pressure: 860~1060mbar
(about 650~800mmHg).

3.Operating Frequency Range: 20Hz~20kHz

4.Insulation Thermal Class: Class B (130ºC)

5.Safety Features:
Dielectric resistance: >1000MΩ in normal condition;
Insulation withstand voltages: 3KV 50Hz/1min (used as a voltage transformer);
6KV 50Hz/1min (used as a current transformer);
Fire retardancy: In conformity with UL94-V0.

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


                                                               Figure 1                                Figure 2
7.Typical Usage and Technical Parameters
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.


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%

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.

 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

8.Attention
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.