Rated Input Current:5A
Rated Output Current:2.5mA
Turns ratio:2000:1
Phase Angle Error:less than 20'(1A,100)
Linear Range:0~20A(100)
Mounting(mm):D5.0
* Small size
* High accuracy
* Good consistency
* Used for current and power measurement
DC immune Current transformer for Electricity meter
-Adopted high permeability core, high accuracy , good linearity;
-Anti-combustion plastic case ;
-Encapsulated with epoxy resin with strong insulation ability;
-DC immune function with good DC error , conform to IEC 62053-21;
- Customised shield to against the external magnetic field .
Supplier: AC & DC current sensors, AC & DC current transformer, AC and DC current sensing switch, temperature & humidity control, multi-signal converter optocoupler
Features:
DC current immunity composite cores is combined with amorphous and nanocrystalline cores together
Magnetic features:
. Strong anti-DC-capacity
. Precision, the scope of application of 0.5-0.1 grade and applicable Current range 1.5-200A
. Good temperature stability
Applications:
.DC current immunity transformers
.Metering transformer in electronic power system
Strange dc current immunity applicable current range (1.5a-200a)
High linearity, high accuracy class, applicable transformer accuracy range 0.5-0.1 class
Good temperature stability
Core size saving by volume and weight
Applications:
.DC current immunity transformers in electronic energy meter/watt-hour meter
.Metering transformer in electronic power system
Transformer Standard current transformer are also called precision current transformers, current transformer standards, standard CT and current transformer standards. Transformer standards are divided into current transformer standards and voltage transformer standards. Standard current transformers are used in the error test of transformers. Used as a current transformer calibration standard
technical parameter
Temperature -5 40
Relative humidity 80%
Rated Primary Current 5-5000A 5A,1A
Rated secondary current 5A 1A
Accuracy Class 0.05S
Allow long-term work under the rated current; More than120A across the core.
Precautions
The current of standard CT and tested CT must be the same in CT calibration.
Follow the given wiring diagram strictly.
Test whether the load box is accurate or not before calibrating the transformer.
Forbid secondary winding opening during the calibration.
Select demagnetization before calibration.The wiring diagram is shown in figure 5.
Short out the secondary winding before cutting off the power when the demagnetization is finished.
Principle wiring diagram of CT with large current generator is similar to above diagram. They are the same except the output winding of large current generator and primary winding of transformer are the same one.
We are one of the leading manufacturer of all types cts of any ratio. We manufacture both outdoor and indoor types. We manufacture both resin cast & oil cooled cts
