The CTB-1 series bushing type current transformer is designed for indoor installation with low environmental pollution. Current transformers are installed in medium-voltage switchgear, generator switchgears and other devices with high requirements for high current, designed to transmit measurement information signals to measuring instruments, protection devices, automation, signaling and control in alternating current networks with a frequency of 50 or 60 Hz.
bushing type current transformers have a cast housing made of epoxy compound using the injection molding method.
MAIN SPECIFICATIONS
- Rated voltage from 0,72 up to 36 kV
- Rated current up to 4000 A
- Rated thermal current up to 100 kA
- Number of secondary windings from 1 to 5
- Winding accuracy class for measurement 0.2; 0.2S; 0.5; 0.5S; 1; 3;
- Winding accuracy class for protection 5P,10P;
- Switching ratio of transformation in the ratio 1:2 on primary or secondary conclusions.
- Ambient conditions: temperature from - 5 ° to +55°.
ADVANTAGES OF CAST INSULATION CURRENT TRANSFORMERS:
- Lack of any maintenance throughout the entire period of operation
- Fireproof design
- Possibility of installation in any plane
- High loads for all accuracy classes
- Low partial discharge (PD)
- Resistance to aggressive environmental conditions
- The hydrophobic material exhibits excellent outdoor performance and also minimizes the possibility of arcing.
- No ozone depleting gases
Transformers meet the requirements of IEC, ANSI, IEEE, GOST standards.
