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Place of Origin: | BEIJING CHINA |
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Brand Name: | GFUVE |
Certification: | CE, UL, ISO9001 |
Model Number: | FU120-3000A |
Minimum Order Quantity: | 3PCS |
Price: | 10-150USD/unit |
Packaging Details: | Standard Export Box |
Delivery Time: | 3-7days |
Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
Supply Ability: | 50000PCS/MONTH |
Name: | BUS BAR CURRENT TRANSFORMER | Application: | Current Measurement |
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Usage: | Busbar | Working Life: | 10 Years |
Material: | PC And Supercrystalline Alloy | Ratio: | 1A Or 5A 333mV AC Or 100mV-10V Optional |
Accuracy: | 0.5% | FS: | <10 |
Burden: | 5VA | ||
High Light: | ring core current transformer,donut type current transformer |
FU120 IEC60044-1 standard 3000/5A Bus bar type Low Voltage Split core Current Transformer with lead seal
The Current Transformer ( C.T. ), is a type of “instrument transformer” that is designed to produce an alternating current in its secondary winding which is proportional to the current being measured in its primary. Current transformers reduce high voltage currents to a much lower value and provide a convenient way of safely monitoring the actual electrical current flowing in an AC transmission line using a standard ammeter. The principal of operation of a basic current transformer is slightly different from that of an ordinary voltage transformer.
Typical Current Transformer
Unlike the voltage or power transformer looked at previously, the current transformer consists of only one or very few turns as its primary winding. This primary winding can be of either a single flat turn, a coil of heavy duty wire wrapped around the core or just a conductor or bus bar placed through a central hole as shown.
Due to this type of arrangement, the current transformer is often referred too as a “series transformer” as the primary winding, which never has more than a very few turns, is in series with the current carrying conductor supplying a load.
The secondary winding however, may have a large number of coil turns wound on a laminated core of low-loss magnetic material. This core has a large cross-sectional area so that the magnetic flux density created is low using much smaller cross-sectional area wire, depending upon how much the current must be stepped down as it tries to output a constant current, independent of the connected load.
The secondary winding will supply a current into either a short circuit, in the form of an ammeter, or into a resistive load until the voltage induced in the secondary is big enough to saturate the core or cause failure from excessive voltage breakdown.
Unlike a voltage transformer, the primary current of a current transformer is not dependent of the secondary load current but instead is controlled by an external load. The secondary current is usually rated at a standard 1 Ampere or 5 Amperes for larger primary current ratings.
There are three basic types of current transformers: wound, toroidal and bar.
PARAMETERS
Electrical parameters | |
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Accuracy class | 0.5% |
Primary current | 300A-3000A |
Secondary current | 5A |
Characteristic and application | Available for copper platoon that under 3000A online measurement. |
Load capacity | 0.1Ω(1A output), 2.5VA(5A output), 5VA |
Installation | Bracket and Bus bar installation |
Output mode | Terminal output |
Mechanical parameters | |
Width of the clamping copper platoon (mm) | 120×30, 120×130, or others |
Theory
Split core current transformers
Current transformer principle is based on the principle of electromagnetic induction. Current transformer is composed of closed core and winding. Its primary winding winding few, string in the need to measure the current line, it often has all the current flowing lines, the secondary winding more turns, in series with the measuring instruments and protection circuit, When the current transformer is working, its secondary side circuit is always closed, so the impedance of the measuring coil and the protective circuit in series is very small, and the working state of the current transformer is close to short circuit. Current transformer is the primary side of the current into a secondary side of the small current to use, the secondary side can not be open.
Applications
Busbar Type Split Core Current Transformer also called Split Core Current Transformer or Openable Current Transformer. It mainly applies for electric system renovation project with easy installation, no need to remove primary busbar, can also operate when power on without affect clients’ normal electricity utilization. It can help clients renovate projects and improve efficiency to save human, material and financial resources. This series can apply with relay tester, measuring and metering devices.