A Current Transformer (CT) is an instrument transformer designed to reduce high primary currents to a lower, measurable value for metering, protection, and control systems. It ensures accurate current scaling while isolating measuring instruments from high-voltage circuits.
| Primary Current Rating / Rated Current | Up to 5000A (or higher for custom applications) |
| Secondary Current Output | 0.577A, 1A, or 5A – for compatibility with standard protection and metering devices |
| Accuracy Class | 0.2, 0.5, and 1.0 for metering; 5P and 10P for protection |
| Burden Capacity | 1 VA to 50 VA depending on application |
| STR (kA/sec) | 63/1 or 40/3 |
| Frequency / Frequency Range | 50 Hz or 60 Hz based on system requirements |
| Insulation Medium | Resin-cast, oil-filled, or SF6 gas-insulated for enhanced durability |
| Core Material | CRGO (Cold Rolled Grain Oriented) steel for minimal core losses |
| Construction Type | Wound type, bar type, and window (ring) type models available |
| Protection Features | Equipped with short-circuit protection and overload tolerance |
| Operating Temperature | -40°C to +70°C |
| Voltage Range | 72.5kV to 800kV |
| Compliance / Standards | Conforms to IEC 61869-2, ANSI C57.13, IS Standards, and NEMA |
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