High-Precision TORO-OMEGA-55 Toroidal Current Transformer
Engineered for international OEM power control panels, smart metering assemblies, and protective relay systems. The TORO-OMEGA-55 features a continuous toroidal core structure that ensures minimum flux leakage, superior phase linear response, and exceptional temperature stability across primary currents from 30A to 200A.
- Rated Primary Range: 30 Amp to 200 Amp AC
- High Accuracy Class: Class 1.0 (IEC 61869-2 Compliant)
- Secondary Current Output: 0.1 Amp (100 mA) / Custom Ratings
- Class F High-Thermal Winding Wire Insulation
- Zero Audible Hum & Low Electromagnetic Stray Losses
CE & RoHS Compliant Production
ERDA Type Tested Performance
Technical Specifications & Electrical Parameters
All Torotrans TORO-OMEGA-55 current transformers are manufactured in our ISO 9001 certified facility in Pune, India, adhering strictly to global electrical standards including IEC 61869-2, IS 2705, and ANSI specs.
| Electrical Parameter | Technical Specification / Standard Value |
|---|---|
| Primary Current Range | 30 Amp to 200 Amp AC |
| Secondary Output Current | 0.1 Amp (100 mA nominal) |
| Rated Burden (Power Rating) | 0.5 VA |
| Accuracy Class | Class 1.0 (Class 0.5 available upon request) |
| Rated Frequency | 50 Hz / 60 Hz Universal Operation |
| Secondary Output Voltage | 4.95 Volt – 5.05 Volt @ 50 Hz |
| High Voltage Insulation Test | 2.0 kV AC for 1 minute (Primary to Secondary) |
| Copper Winding Grade | Class F (155°C rated enamelled copper wire) |
| Overall Insulation System | Class B (130°C rated insulation materials) |
| Operating Temperature Range | -15°C to +70°C (+5°F to +158°F) |
| Termination Method | Flexible Flying Leads (Color Coded: Red = Start, Black = End) |
| Mounting Type | Integrated Base Plate with pre-drilled mounting holes |
Engineering Features & B2B Industrial Applications
The TORO-OMEGA-55 series current transformer is specifically tailored for low-tension (LT) measuring applications requiring precise current step-down conversion for micro-controller-based electrical meters, automatic power factor correction (APFC) panels, and electronic motor protection devices.
Key Engineering Advantages for Global OEM Buyers
- Toroidal Grain-Oriented Core: Utilizes high-permeability silicon steel strip wound seamlessly without air gaps, reducing excitation current and phase error to absolute minimum levels.
- Enhanced Dielectric Safety: High-voltage dielectric tested up to 2,000V AC between primary passage and secondary windings to guarantee full compliance with international electrical safety norms.
- Compact Footprint: Up to 40% lighter and more compact than conventional square or rectangular block transformers, allowing high-density installation inside modern control panels.
- Robust Thermal Tolerance: Operates efficiently across demanding industrial environments ranging from -15°C cold starts to high ambient cabinet temperatures up to +70°C.
Primary Industrial Application Fields
- Digital Panel Meters, Ammeters, and Energy Management Systems (EMS)
- Automatic Power Factor Correction (APFC) Switchboards
- Motor Protection Relays and Overload Sensing Equipment
- Industrial Inverters, Variable Frequency Drives (VFDs), and UPS Systems
- Substation Automation Units & Low-Voltage Power Distribution Panels
Quality Assurance & Customized Manufacturing
With over 30 years of specialized manufacturing experience since 1994, Torotrans maintains 100% routine testing on every TORO-OMEGA-55 unit produced. Parameters verified include turns ratio accuracy, phase displacement, excitation curve consistency, and high-potential breakdown withstand capacity. Custom lead lengths, special secondary turn ratios, and custom potting options can be tailored to meet your technical requirements.
Need Technical Datasheets or Bulk OEM Pricing?
Contact our engineering team to review full dimensional CAD drawings, ERDA test reports, or sample requests.