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Current Transformer

Current Transformers(CTs) are used in the panel building, generator, wind power. Current Transformers can perform circuit control, measure current for power measurement and control, and perform roles for safety protection and current limiting. More

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ALH-0.6630I50/10.5R0.2VA1T

30×10mm current tranformers 0.2VA current mutual inductor

Manufacturer P/N: ALH-0.6630I50/10.5R0.2VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 50A | 1A | 0.5 | 0.2VA

CMC, RoHS

US $11.31 /Piece

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ALH-0.6630I60/10.5R0.2VA1T

0.5 transformers 0.2VA instrument transformer

Manufacturer P/N: ALH-0.6630I60/10.5R0.2VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 60A | 1A | 0.5 | 0.2VA

CMC, RoHS

US $11.77 /Piece

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ALH-0.6630I150/50.5R2.5VA1T

0.5 transformers current 30×10mm mutual inductor

Manufacturer P/N: ALH-0.6630I150/50.5R2.5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 150A | 5A | 0.5 | 2.5VA

CMC, RoHS

US $8.81 /Piece

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ALH-0.6630I75/10.5R0.2VA1T

0.2VA current transfomers I bus bar or tube type transformers

Manufacturer P/N: ALH-0.6630I75/10.5R0.2VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 75A | 1A | 0.5 | 0.2VA

CMC, RoHS

US $12.12 /Piece

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ALH-0.6630I150/10.5R2.5VA1T

30×10mm current mutual inductors 0.5 current transformer

Manufacturer P/N: ALH-0.6630I150/10.5R2.5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 150A | 1A | 0.5 | 2.5VA

CMC, RoHS

US $13.47 /Piece

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ALH-0.6630I100/10.5R0.2VA1T

1A instrument transformers 0.2VA current transfomers

Manufacturer P/N: ALH-0.6630I100/10.5R0.2VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 100A | 1A | 0.5 | 0.2VA

CMC, RoHS

US $12.68 /Piece

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ALH-0.6630I200/10.5R5VA1T

1A instrument transformers 200A current mutual inductor

Manufacturer P/N: ALH-0.6630I200/10.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 200A | 1A | 0.5 | 5VA

CMC, RoHS

US $14.35 /Piece

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ALH-0.6630I200/50.5R5VA1T

5A mutual inductor 200A current transformers

Manufacturer P/N: ALH-0.6630I200/50.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 200A | 5A | 0.5 | 5VA

CMC, RoHS

US $8.81 /Piece

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ALH-0.6630I250/50.5R5VA1T

5VA current transfomers I bus bar or tube type current mutual inductors

Manufacturer P/N: ALH-0.6630I250/50.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 250A | 5A | 0.5 | 5VA

CMC, RoHS

US $7.75 /Piece

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ALH-0.6630I250/10.5R5VA1T

0.5 current transformer 1A mutual inductor

Manufacturer P/N: ALH-0.6630I250/10.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 250A | 1A | 0.5 | 5VA

CMC, RoHS

US $15.54 /Piece

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ALH-0.6630I300/10.5R5VA1T

I bus bar or tube type current transformers 5VA transformers current

Manufacturer P/N: ALH-0.6630I300/10.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 300A | 1A | 0.5 | 5VA

CMC, RoHS

US $16.35 /Piece

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ALH-0.6630I300/50.5R5VA1T

0.5 current mutual inductors I bus bar or tube type instrument transformer

Manufacturer P/N: ALH-0.6630I300/50.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 300A | 5A | 0.5 | 5VA

CMC, RoHS

US $8.04 /Piece

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ALH-0.6630I400/50.5R5VA1T

30×10mm instrument transformer 0.5 mutual inductors

Manufacturer P/N: ALH-0.6630I400/50.5R5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 400A | 5A | 0.5 | 5VA

CMC, RoHS

US $9.23 /Piece

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ALH-0.6630I30/11R0.1VA1T

1A transformers 30×10mm transformer

Manufacturer P/N: ALH-0.6630I30/11R0.1VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 30A | 1A | 1.0 | 0.1VA

CMC, RoHS

US $10.95 /Piece

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ALH-0.6630I40/11R0.1VA1T

I bus bar or tube type current mutual inductors 40A current mutual inductor

Manufacturer P/N: ALH-0.6630I40/11R0.1VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 40A | 1A | 1.0 | 0.1VA

CMC, RoHS

US $10.83 /Piece

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ALH-0.6630I75/51R2.5VA1T

I bus bar or tube type current transformers 1.0 transformer

Manufacturer P/N: ALH-0.6630I75/51R2.5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 75A | 5A | 1.0 | 2.5VA

CMC, RoHS

US $8.81 /Piece

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ALH-0.6640I30/10.5R0.1VA1T

40×10mm current tranformers 1A current transformers

Manufacturer P/N: ALH-0.6640I30/10.5R0.1VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 40×10mm | 30A | 1A | 0.5 | 0.1VA

CMC, RoHS

US $10.77 /Piece

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ALH-0.6630I100/51R2.5VA1T

100A transformers current 1.0 mutual inductors

Manufacturer P/N: ALH-0.6630I100/51R2.5VA1T

Brand: Siemens APT

Parameters: I bus bar or tube type | 30×10mm | 100A | 5A | 1.0 | 2.5VA

CMC, RoHS

US $8.81 /Piece

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FAQ

1. What are CT and PT in transformer?

CT means current transformers, which main are used in clamp meters to measure current. PT means potential transformer, which main are used in high voltage. Sometimes names transformer Voltage.


2. What is difference between CT and PT?

Both are instrumentation transformers. CT measures current PT measures voltage. CT is used in clamp meters. PTs measure high voltages. They both bring the measured values down to a standard of 5 ampere or 110 Voltage.


3. What is current transformer burden?

The secondary load of a current transformer is usually called the burden or Current Transformer Ratio, to distinguish it from the load of the circuit whose current is being measured. The burden, in a CT is the impedance presented to its secondary winding.


4. What is current transformer ratio?

Current transformers are transformers used to step down the current level of high-power transmission systems to measure or monitor the current levels. As a consequence, we use CTs to step down the current levels to measure it.

The CT ratio is the ratio of primary current input to secondary current output at full load. For examples, a CT with a ratio of 500:5 is rated for 500 primary amps at full load and will produce 5 amps of secondary current when 500 amps flow through the primary.


5. Why do we use current transformer?

A current transformer (CT) is a type of transformer that is used to reduce or multiply an alternating current (AC). It produces a current in its secondary which is proportional to the current in its primary. Engineers can calculate the primary current value by the secondary current and the current transformer ratio.