A 24kV current transformer (CT) provides secondary current signals for electrical measurement and metering in suitable medium-voltage systems.
For electrical utilities, contractors, and equipment manufacturers, selecting the correct CT requires consideration of accuracy, insulation, current ratings, and environmental conditions.
What Is a 24kV Current Transformer Used For?
A 24kV-class CT may be specified for suitable medium-voltage distribution installations, including certain 22kV systems, subject to applicable standards and project insulation requirements.
Common applications include:
- 1、Electrical substations
- 2、Power distribution networks
- 3、Outdoor metering installations
- 4、Industrial electrical systems
VABO COL-24 Current Transformer
The COL-24 is an oil-immersed instrument transformer designed for current measurement and energy metering.
Documented specifications include:
| Parameter | Specification |
Rated voltage | 24kV |
Secondary current | 5A |
Accuracy options | 0.2S / 0.5 |
Corresponding rated outputs | 15VA / 30VA |
Insulation | Oil-immersed |
Standard reference | IEC 61869-2 |
The available primary current ratios and fault-current withstand ratings depend on the selected configuration.
Important Buying Considerations
Before placing an order, confirm:
- 1、Current ratio and accuracy class
- 2、Rated burden
- 3、Short-circuit withstand requirements
- 4、Indoor or outdoor installation
- 5、Ambient temperature, humidity, and altitude
- 6、Applicable utility standards
Oil-immersed insulation does not automatically make a CT suitable for every outdoor environment. The product's rated service conditions must be checked.
