Description
ABB SAFT103 is a high-precision fiber optic current transformer (FOCT) designed for medium and high-voltage power systems. Engineered to deliver reliable current measurement and protection,
SAFT103 utilizes optical fiber technology to eliminate issues like magnetic saturation and insulation degradation found in traditional electromagnetic current transformers (CTs). This makes it ideal for smart grids, digital substations, and renewable energy applications where accuracy, reliability, and immunity to electromagnetic interference (EMI) are critical.
ABB SAFT103 supports seamless integration with IEC 61850-based substation automation systems, providing digital current signals for protection, metering, and control. Its compact design and long lifespan make it a cost-effective solution for modern power infrastructure.
| Parameter |
Specification |
| Type |
Fiber Optic Current Transformer (FOCT) |
| Voltage Class |
10 kV – 300 kV (medium to high voltage) |
| Rated Primary Current |
50 A – 5000 A (customizable) |
| Accuracy Class |
Protection: 5P20, 10P20; Measuring: 0.2S, 0.5S |
| Output Signal |
IEC 61850-9-2 LE (SV), FT3 format |
| Fiber Type |
Single-mode fiber (max. 2 km transmission) |
| Operating Temperature |
-40°C to +85°C |
| Protection Level |
IP67 (outdoor), IP54 (indoor) |
| Vibration Resistance |
IEC 61373 Class 1A (seismic-proof) |
| Insulation Voltage |
Compliant with IEC 60664-1 standards |
CI626A 3BSE005029R1
ABB SAFT103 offers superior accuracy (≤0.5% error across 1%–200% of rated current) and immunity to EMI, making it suitable for harsh industrial environments. Its fiber optic design eliminates magnetic saturation, ensuring reliable performance during fault conditions. The module supports hot-swappable installation and self-diagnostic functions, reducing maintenance time by up to 70% compared to traditional CTs. In a 110 kV substation case study, SAFT103 reduced measurement errors by 50% and saved 60% installation space, enhancing overall system efficiency.
Industry Applications:
- Power Generation/Distribution: Digital substations, renewable energy (solar/wind) grid integration.
- Industrial Manufacturing: High-voltage motor control, arc furnace protection.
- Transportation: Railway electrification, electric vehicle (EV) charging infrastructure.
Case Study: A major utility company deployed ABB SAFT103 in a 220 kV smart substation to replace outdated electromagnetic CTs. The FOCT’s digital output (IEC 61850 protocol) enabled real-time fault detection and reduced relay response time to <10 ms, improving grid stability and cutting annual maintenance costs by $50,000.
Compared to traditional electromagnetic CTs, ABB SAFT103 eliminates 铁芯 (iron core) saturation and oil-based insulation risks, offering a 30-year lifespan without degradation. Unlike some competitors’ FOCT models, it provides built-in waveform recording and GOOSE trip signal support, simplifying system integration. Its wide temperature range and seismic resistance also make it preferable for extreme environmental applications.
- Current Range: Choose a rated current 20% higher than the maximum load to accommodate inrush currents (e.g., motor starting).
- Communication Protocol: Prioritize IEC 61850 compatibility for digital substations; use FT3 converters for legacy systems.
- Environment: Opt for IP67-rated models for outdoor/harsh environments; IP54 for indoor setups.
- Scalability: Ensure the FOCT supports parallel operation if future current upgrades are planned.
ABB UFC721AE101 3BHB002916R0101
- Installation: Avoid bending fiber optic cables beyond a 30 mm radius; use armored cabling for outdoor installations.
- Grounding: Properly ground the FOCT’s metallic housing to prevent electrostatic discharge (ESD).
- Maintenance: Regularly clean fiber connectors with alcohol swabs to maintain light transmission efficiency.
- Firmware Updates: Use ABB’s dedicated software to update firmware and validate self-diagnostic reports quarterly.
Shanxi Xinyeda International Trading Co., Ltd. is your trusted partner, we provide and other automation spare parts sales and technical support. Please visit our website www.xydcontrol.com or contact us and we will be happy to serve you.
Continue Searching
We're here when you need us
What happens next?
- 1. Email confirmation
You will get an email confirming that we have received your enquiry.
- 2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
- 3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
Full 12-month warranty on all components
