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STA1724 Series Vertical Core Type Three-phase Current Transformer
STA1724.jpg
STA1724 Series Vertical Core Type Three-phase Current Transformer
Features:
① Vertical pass-through design allows flexible installation, can be fixed on busbar or baseplate;
② Different secondary lead wire colors for easy identification of same-name terminal and three phases;
③ Fully enclosed structure with epoxy potting provides excellent environmental resistance, strong insulation isolation, moisture proofing and vibration resistance, as well as aesthetic appearance.
STA1724 General Technical Specifications for Standard Products:

1Features:

Vertical pass-through design allows flexible installation, can be fixed on busbar or baseplate;

 Different secondary lead wire colors for easy identification of same-name terminal and three phases;

Fully enclosed structure with epoxy potting provides excellent environmental resistance, strong insulation isolation, moisture proofing and vibration resistance, as well as aesthetic appearance.

2Ambient Conditions:

① Ambient temperature: -55℃+85℃;

② Relative humidity: ≤90% at 40℃;

③ Atmospheric pressure: 8601060mbar(about 650800mmHg).

3Operating Frequency Range: 20Hz~1kHz

4Insulation Thermal Class: Class B (130°C)

5Safety Features:

① Insulation resistance: >1000MΩ in normal condition;

② Insulation withstand voltages: 6KV 50Hz/1min.

③ Fire retardancy: In conformity with UL94-V0.

Overload characteristics: the transformer can operate continuously at 5 times the rated current; can operate for 10 minutes at 10 times the rated current.

6Outline Drawing, Installation Dimension and Coil Diagram: (tolerance±1mm)

①Outline drawing and installation dimensions are shown in Figure 1


 1.png

                                          Fig 1

Note: Phase A output is yellow wire, Phase B output is green wire, Phase C output is red wire, black wire is common wire.

 The coil diagram is shown in Figure2

image.png

7. Performance Parameters:

Performance parameters when applied as shown in Figure 3 are listed in the table below: image.png


Model

Rated

Input Current

Rated

Output Current

Rated

Sampling Resistance

Rated

Sampling Voltage

Non-linearity

Phase Shift

STA1724-01M

1A

1mA

500Ω

0.5V

0.25%

30

STA1724-02M

10A

10 mA

50Ω

STA1724-03M

20A

20 mA

25Ω

STA1724-04

50A

50 mA

10Ω

0.5%

 

8. Attention:

① Connect the primary winding of the current transformer in series in the circuit under test. Operate the secondary winding approximately in a short-circuit state.

② Do not allow the secondary circuit of the current transformer to be open-circuited. Do not install any fuses in the secondary circuit

Application Case
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