MODEL: TORO-BOX-75X75P-4M-L12
Precision Toroidal Current Transformer
Torotrans manufactures and exports high-precision TORO-BOX-75X75P-4M-L12 Toroidal Current Transformers designed for advanced electrical measuring instruments and protective relay systems. Engineered for wide primary current ranges (50A to 600A), this transformer guarantees superior linearity, low thermal dissipation, and accurate output signals even under harsh operating environments.
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Dimensional Drawing
Electrical Schematic
Technical Specifications
| Model Code | TORO-BOX-75X75P-4M-L12 |
| Primary Current Range | 50 Amp to 600 Amp |
| Secondary Current Output | 0.1 Amp or 0.2 Amp |
| Rated VA Power Output | 1.0 VA |
| Accuracy Class | Class 1.0 High Precision |
| Operating Frequency | 50 Hz / 60 Hz Dual Rating |
| Secondary Voltage Rating | 9.90 V – 10.10 Volt @ 100 Ω Burden |
| High Voltage Dielectric Test | 2.0 kV AC between Primary and Secondary Winding |
| Winding Insulation System | Class F Thermal Rating (155°C) |
| Enclosure Insulation | Class B Thermal Rating (130°C) |
| Operating Temperature Range | -15°C to +70°C Continuous Operation |
| Terminal Configuration | Fixed Nut-Bolt / U-Type Lug (S1 - Start, S2 - End) |
| Mounting Method | Base Plate Mounting (as per mechanical layout) |
Key Features & Industrial Applications
- High Measurement Accuracy: Specifically crafted for digital energy meters, power analyzers, and sub-metering switchboards requiring Class 1 accuracy.
- Heavy Current Handling: Designed to withstand continuous operating currents up to 600A with minimal ratio and phase angle errors.
- Robust Flame Retardant Housing: Encapsulated in high-grade protective enclosures for maximum shock isolation and resistance against industrial moisture and dust.
- Custom OEM Engineering: Non-standard turns ratios, specialized secondary lead wire lengths, and tailored mounting brackets available upon buyer request.
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