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1.Features:
- Used as either a voltage transformer, or a current transformer;
- Fully-encapsulated, strong mechanical and environmental endurance, strong
dielectric strength and elegant outline;
- Being able to be directly welded on PCB;
- Pin-grid of 2.54mm, meeting requirements of computerized board arrangement;
- Light in weight, small in size, high in accuracy, wide in sampling range
and flexible in applications
2.Ambient Conditions
- Ambient temperature: -55...+85°C;
- Relative humid <90% при 40°C;
- Atmospheric pressure: 860~1060mbar (650~800mmHg approximately);
3.Range of working Frequency: 20Hz~20kHz
4.Insulation Rating: Class F (155°C).
5.Safety features:
- Dielectric resistance: >1000MOm in normal condition;
- Insulation withstand voltages: 3000V 50Hz/1min (used as a voltage transformer);
6000V
50Hz/1min (used as a current transformer);
- Fire retardancy: In conformity with UL94-Vo
6.Outline Drawing, Installation Dimention and Coil Diagram
7.Typical Usages 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.
| 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
rated
value |
6mA/
6mA |
>3KV |
| DVDI-001M |
<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
rated
value |
| DVDI-001M |
<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.
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 |
200 Om |
1.2V |
<30` |
<0.2% |
1.5
times
of
rated
value |
>6KV |
| DVDI-001M |
6mA |
250 Om |
1.5V |
<40` |
<0.25% |
Used as
in Fig.4 |
DVDI-001 |
18A |
6mA |
400 Om |
2.4V |
<20` |
<0.2% |
| DVDI-001M |
6mA |
500 Om |
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 |
<1/2
times IC
power
supply |
<5` |
<0.1% |
2
times
of
rated
value |
>6KV |
| DVDI-001M |
6mA |
Used as
in Fig.6 |
DVDI-001 |
18A |
6mA |
| DVDI-001M |
6mA |
8.Attention
No matter used as a voltage or a current transformer, in principle, it is a current-type
transformer. Therefore the secondary circuit is disallowed to be an open circuit.
By virtue of this reason, DO NOT connect any fuse in the secondary loop.
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