A Capacitive Voltage Transformer (CVT) is a specialized electrical device used to step down high voltage signals to manageable levels for metering, protection, and control in power transmission systems. It employs capacitive voltage dividers to achieve precise voltage scaling.
| Feature | Details |
|---|---|
| Voltage Rating | Ranges from 66 kV to 765 kV for high-voltage systems |
| Accuracy Class | 0.2, 0.5, and 1.0 for precise metering and protection |
| Frequency Range | 50 Hz or 60 Hz, depending on system standards |
| Insulation Medium | Oil-filled, gas-filled (SF6), or composite insulation for improved safety |
| Capacitor Divider | Consists of high-precision capacitors to ensure accurate voltage scaling |
| Output Voltage | Typically 110V or 120V for relay protection and metering |
| Protection Features | Equipped with surge arresters for transient protection |
| Operating Temperature | Suitable for extreme environments (-40°C to +70°C) |
| Compliance Standards | Meets IEC 61869-5, ANSI C93.1, and IS standards for voltage transformers |
| Applicable Standards | IEC, NEMA |
| Range | 72.5kV to 1200kV |
| Frequency | 50/60HZ |
| Rated Voltage Factor | 1.2 (Cont)/ 1.5 (30 Sec) |
| Secondary Voltage | 100, 100√3, 110, 110√3, 120, 120√3 |
| Creepage Distance (mm/kV) | 31.35 |
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