Description

The JaiDurga 11 kV HTCT with a 250/5A ratio and Class 0.2S is a High Tension Current Transformer (HTCT) used in high-voltage electrical systems. Here’s a detailed breakdown of its specifications:

Key Specifications:

1. Manufacturer:
   • JaiDurga: This refers to the manufacturer of the current transformer.
2. Rated Voltage:
   • 11 kV: The transformer is designed to handle voltages up to 11 kilovolts (kV), indicating it is used for high-voltage applications such as transmission and distribution networks.
3. Current Ratio:
   • 250/5A: This is the current transformation ratio.
     • 250 A on the primary (high-voltage) side of the CT is transformed to 5 A on the secondary (low-voltage) side.
     • The CT reduces the high current to a lower, standardized level for measurement and monitoring purposes, making it easier to connect to meters, relays, and other protective equipment.
4. Accuracy Class:
   • Class 0.2S:
     • Class 0.2S refers to the accuracy class of the CT.
     • This indicates that the transformer has an accuracy of ±0.2% under normal operating conditions. The “S” denotes a special accuracy class often used for applications like energy metering or precise monitoring in revenue metering systems, where high accuracy is required.
5. Burden:
   • The burden refers to the maximum load that the CT can drive on the secondary side without exceeding its accuracy limits. This value is important for determining the compatibility of the CT with connected meters or other equipment.
6. Rated Frequency:
   • The rated frequency for most HTCTs is typically 50 Hz in countries like India.
7. Insulation Class:
   • The CT likely has an insulation class suitable for its voltage rating, ensuring safe operation even in environments with high electrical stress. This could be something like Class E or Class F, but the exact rating would depend on the manufacturer and the specific model.