Current Transformer
Current transformers play a vital safety role by scaling down high currents to safer levels for measurement. Toroidal current transformers, with their ring-shaped core and secondary winding, not only ensure high accuracy but also feature a compact size, making them ideal for applications where space efficiency is crucial. Custom designs can be tailored to meet specific operational standards and specifications. This prevents electrical instruments from getting damaged due to overload and ensures accurate readings for efficient energy management. Bar-type current transformers feature a straight primary conductor passing through a window in the magnetic core, making them particularly suitable for high-current busbar applications. If you’re in the market for current transformers, you’ve come to the right place!
Leading Current Transformer Manufacturer Since 1990
As an ISO 9001-certified current transformer manufacturer, ACRHT specializes in high-precision toroidal, bar-type and split-core current transformers for:
- Energy metering (Class 0.2 accuracy)
- Motor protection (Instantaneous fault detection)
- Renewable energy systems (50Hz/60Hz dual-rated)
Core Manufacturing Specifications
Why Choose ACRHT as Your CT Manufacturer?
- ✅ 30+ Years of specialized CT production
- ✅ Custom ratios from 50:5 to 4000:1
- ✅ Global certifications (CE, UKCA, RoHS)
- ✅ 24/7 engineering support for OEM projects
Current Transformer Manufacturer FAQ
1. What types of current transformers do you manufacture?
We produce three main types:
- Toroidal CTs - For compact spaces with 0.2 class accuracy
- Bar-type CTs - For high-current busbar applications
- Split-core CTs - For retrofit installations without disconnecting cables
2. What's your minimum order quantity (MOQ)?
Standard models: MOQ 50 units
Custom designs: MOQ 100 units
Sample orders available for qualified buyers.
3. How do you ensure measurement accuracy?
All CTs undergo:
- Fluke 6100A reference calibration
- Temperature cycling tests (-40°C to 70°C)
- 100% ratio and phase angle verification
4. Can you provide custom-designed CTs?
Yes, we specialize in:
- Non-standard turns ratios
- Special core materials (nanocrystalline/Si-Fe)
- Explosion-proof housings (ATEX/IECEx)
Typical lead time: 4-6 weeks.
5. What industries do you serve?
Our CTs are used in:
| Industry | Application |
|---|---|
| Power Generation | Generator protection |
| Renewable Energy | Solar/Wind farm monitoring |
| Industrial | Motor control centers |
ACRHT Manufacturing Excellence
As a current transformer manufacturer with ISO 9001:2015 certification, we specialize in:
- ✅ CRGO Silicon Steel Cores - High permeability with < 1.2W/kg core loss (vs industry avg 1.5W/kg)
- ✅ IEEE C57.13 & IEC 61869 Compliance - Verified by third-party lab testing
- ✅ 50+ Custom CT Designs - Including Rogowski coils for high-frequency applications
Core Material Comparison
| Material | Permeability (μ) | Core Loss | Used In |
|---|---|---|---|
| CRGO Steel | 18,000 | 1.1W/kg @1.7T | Standard CTs |
| Nanocrystalline | 50,000 | 0.3W/kg @1.7T | High-accuracy CTs |
Why Choose ACRHT Over Other Manufacturers?
✔ ACRHT Advantages
- Faster Delivery: 15-day standard lead time (vs industry 30-day)
- Brother Ratio Range: 5:5 to 6000:1 (competitors avg 100:5-3000:1)
✖ Common Competitor Issues
- Limited custom winding options
- No on-site calibration reports
Testing & Certifications
All CTs undergo 100% testing including:
- Ratio error @ 5%-120% rated current
- Phase displacement (±10 arcmin max for Class 0.2)
- Dielectric test (3kV RMS for 1min)
◼ Compliant with: IEEE C57.13, IEC 60044-1, ANSI C12.11
Inquiry for Our Products
ACRHT CO.,Ltd.Email: info@acrht.com
