Measurement
Standardized 1 A or 5 A secondary output for accurate metering and monitoring.
Medium-voltage instrument transformers
Current Transformers
CTs convert high primary current into a standardized secondary signal, allowing meters and protection relays to operate safely and accurately in medium-voltage systems.
Up to 36 kV
Voltage class
Up to 3000 A
Primary current
Metering and protection
Accurate signals for safer networks.
Niroo Trans current transformers are available for medium-voltage switchgear, substations, industrial projects, and protection applications, with multiple accuracy classes and indoor or outdoor configurations.
Protection
Dedicated accuracy classes for reliable relay operation under fault conditions.
Technical range
Current transformer specifications.
General data for UNA, INA, AGE, and APE current-transformer families.
| Characteristic | Symbol | 12 kV | 24 kV | 36 kV |
|---|---|---|---|---|
| Highest system voltage | Um (kV) | 12 | 24 | 36 |
| Insulation level | BIL (kV) | 28–75 | 50–125 | 70–170 |
| Rated primary current | Ipn (A) | Up to 3000 A | ||
| Rated secondary current | Isn (A) | 1 A or 5 A | ||
| Rated short-time thermal current | Ith (kA) | Up to 40 kA | ||
| Number of cores | — | Up to 4 cores | ||
| Accuracy classes | — | 5P, 10P, X, 0.2, 0.5, 0.2S, 0.5S | ||
| Rated frequency | F (Hz) | 50 / 60 Hz | ||
| Installation | — | Indoor or outdoor | ||
Applications and support
Designed around the project.
Main applications
- MV switchgear current measurement
- Protection relay supply
- Distribution and industrial substations
- Monitoring and control projects
Technical flexibility
- Up to four cores
- 1 A or 5 A secondary current
- Indoor and outdoor installation
- 50 Hz and 60 Hz networks
Pooya Electric support
We assist with CT selection, price enquiries, availability checks, and coordination of product supply for your project.
Contact sales
Need a CT quotation or technical review?
Send your voltage class, current ratio, cores, burden, and accuracy requirements.