Meets all latest IEC and IS metering and protection classes, including special core classes (other standards available on request)
Low weight & minimum oil volume design
Available in both single phase and three phase design
High accuracy up to 0.1 and 0.2s class
Rated primary currents up to 3000 A
Rated secondary current 1 A or 5 A
Rated short circuit withstand up to 40 kA for 3 secs
Highly refined and processed oil/paper insulation system
True hermetical sealing
Uniformly distributed secondary windings guarantee accurate transformation at both rated and high currents
Stable accuracy over a long period of time
Successful field experience since the manufacture of the first CTVT in 2001
CTs are virtually maintenance free during a long lifetime
Only one foundation required in the switchyard as a consequence of combining the voltage and current sensing functions in one transformer
| Particulars | Unit | General Specifications |
|---|---|---|
| Highest System Voltage | KV | 12 36 |
| Applicable Standard | IS 2705, IS 3156, IS 16227 & IEC 61689 | |
| Rated System Voltage | KV | 11 33 |
| One Minute Power Frequency Dry Withstand Voltage on Primary Winding | KV | 28 70 |
| One Minute Power Frequency Withstand Voltage On Secondary Windings | KV | 3 KV |
| Lightning Impulse | KVp | 95 170 |
| Rated Primary Current | A | As per requirement |
| Rated Secondary Current | A | 5A or 1A |
| Short Time Thermal Withstand Current/Duration | KA sec | As per requirement |
| Number of Cores | As per requirement | |
| CT Output / Accuracy | As per requirement | |
| Rated Primary Voltage | KV | 11kV 33kV |
| Rated Secondary Voltage | V | 110V/√3 or 110V/3 or 110V. |
| Voltage Factor | 1.2cont. 1/9 for 30 sec | |
| Number of Secondary windings | Max 3 | |
| PT Output/Accuracy | As per requirement | |
*Above specifications are for indicative purposes only. CTPTs upto 36 KV can be manufactured in any specific requirement of the customer.
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