China professional supplier for High-precision PCB mounting Current transformer with different turns ratio and customized design is available

Sep 05, 2016

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Type : Current transformer

FULLSTAR P/N: CT21FC Series -1000/2000/3000 (fot turns ratio ) 10A-6.66mA /10A-3.33mA

Working principle

Principle of current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. The primary winding turns is less and connected in series in the circuit to measure the current, so it often flows all current in circuit; Secondary has more windings and connected in series of measuring and protection circuit. When current transformer is in operation, the two- loop is always closed. Therefore, measuring and protecting loop-circuit impedance in series with the coil current transformer is very small, close to the state of short circuit.

Specs

Turns Ratio: 1:1500 /1:1000/1:2000/1:3000 or other customized design

Rated pri current: 10A

Rated sec current: 6.66mA /3.33mA or other

Output voltage: 100mv+/-10%@15A , RL=10Ω

Accuracy: 0.5%

Inductance: 42H Min@100Hz, 0.1V

DCR: 175Ω MAX

Hi-pot: 2.5KV,1mA, 1Min

Insulation resistance: 500Vdc,100MΩ Min

Operating temperature: -20℃ to +70℃

Storage temperature: -40℃ to + 85℃

Note:

1. RoHS Compliant

2. Flammability: UL94V-0

3. ASTM oxygen index: >29%

4. Temp 20℃， 48%RH

Description

Meet the standard of IEC62053 and ANSI12.20

High linearity with DC immunity characteristics

Outstanding stability ,separate the external magnetic field interference

Operation Frequency:20--400Hz

High potential voltage 4000V/min

Meet ROHS requirements.

Application

Energy meter, power transducer, precision power meter and energy monitoring devices.

Over current protection circuit of motor and other electrical appliances.

Switching power supplies, chargers, alarm system, TV and CRT monitor displays, UPS, VCD/DVD players, audio and visual equipment, OA machines, inverter.

Pictures show and more details,please check High precision Current transformer