Precision Toroidal Current Transformer (TORO-RING-75)
Torotrans is a certified manufacturer, supplier, and global exporter of high-precision ring-type low tension current transformers. Engineered in Pune, Maharashtra, India, the TORO-RING-75 model provides high-accuracy ratio performance, superior magnetic permeability, and long-term thermal stability for global electrical measuring instruments and protective relaying panels.
TORO-RING-75 Front View
TORO-RING-75 Side Profile
TORO-RING-75 Lead Winding
Technical Specifications
| TORO-RING-75 Engineering Parameters | ||
|---|---|---|
| Primary Current Range | : | 50 A – 300 A (Ampere) |
| Secondary Current Rating | : | 0.1 Ampere (Standard) |
| Burden Rating (VA) | : | 1.0 VA |
| Accuracy Class | : | Class 1.0 (IEC / IS Standards) |
| Rated Frequency | : | 50 / 60 Hz |
| Secondary Output Voltage | : | 9.90 V – 10.10 V @ Rated Test Point |
| High Voltage (H.V.) Insulation Test | : | 2.0 kV AC RMS between Primary to Secondary (1 Min) |
| Winding Insulation Class | : | Class F (155°C Thermal Tolerance) |
| System Insulation Level | : | Class B (130°C Thermal Tolerance) |
| Operating Temperature Range | : | -15°C to +70°C ambient |
| Secondary Termination Type | : | Flying Leads (Color Coded: Red - Start / Black - End) |
Dimension Diagram (All dimensions in mm)
Electrical Circuit Schematic
Key Features & Industrial Applications
- High-Accuracy Current Measurement: Optimized grain-oriented silicone steel core toroidal geometry minimizes core loss and phase error.
- Versatile Instrumentation Integration: Engineered specifically for connection with digital ammeters, kW energy meters, motor protection relays, and control switchgear.
- Heavy-Duty Insulation Performance: 2.0 kV high-voltage withstand capability ensures safe operation in high-power industrial power distribution circuits.
- Compact Ring Form Factor: Seamless installation over busbars or insulated primary cables in space-constrained electrical enclosures.
OEM & Custom Specification Capability
- Non-Standard Ratio Designs: We manufacture customized ring-type CTs tailored to unique primary current inputs, specialized secondary outputs, or specific burden requirements.
- Quality Testing Assurance: Every TORO-RING-75 unit undergoes 100% factory routine testing for turns ratio accuracy, secondary voltage output, and dielectric withstand strength.
International Quality Compliance: TORO-RING-75 Current Transformers are manufactured in accordance with international safety standards, featuring CE conformity and RoHS environmental directive compliance.
Need Custom Toroidal Current Transformers for Your Project?
Torotrans supplies high-reliability CT transformers to panel builders, OEM manufacturers, and industrial buyers worldwide. Contact our engineering team today for technical datasheets, CAD drawings, or factory-direct volume pricing.
Send an Inquiry