Rogowski Coils Expert:
PRODUCT FEATURE
Our Products and Solutions
Precision Measurement, Wide-Band Performance – ZCT RC Series Rogowski Coils, Built for Complex Industrial Environments, Industrial Automation, Power Quality Monitoring
There is always a right for you
Rogowski Coils Application Scenarios
EV Charging Energy Monitoring
Used in charging piles or charging station monitoring systems to measure three-phase AC current for charging energy metering and power analysis.
– Measures large currents without disconnecting cables
– Wide bandwidth measurement (ideal for harmonic analysis)
– Safe and flexible, suitable for outdoor equipment
Power Quality Analysis
Used with power analyzers to capture harmonics, surges, and current transients.
– High linearity, low phase shift
– Measures irregular waveforms
– Microsecond-level response speed
Energy Management Systems
Used for power monitoring in buildings, factories, and distribution rooms.
– Non-contact installation without cable disconnection or power outage
– High accuracy and fast response
– Suitable for long-term operation
Industrial Equipment Monitoring
Used for monitoring the operating status of inverters, UPS, generators, compressors, etc.
– Resistant to strong electromagnetic interference
– Flexible installation for confined spaces
Standard Rogowski Coil – Flexible, Accurate, Reliable
Flexible coil, 50 Hz–20 kHz bandwidth, ±0.5% accuracy. Coreless design, 10 A to 50 kA measurement range, easy retrofit installation.
Rogowski Coil with Integrator – Complete Measurement Solution
Integrated precision circuit, 0–5 V or 4–20 mA output. Captures DC + AC, low-frequency down to 1 Hz, and transients up to 20 kHz.
Tailor-Made Rogowski Coil – Customized to Your Needs
Custom several coils per bunch with various cable length and selectable sensitivity (50–500 mV/kA), wide temperature range −40 °C to +85 °C.
REGUAL ELECTRICAL SPEC
Operating frequency: 50Hz~600Hz
Dielectric strenght: 3000Vrms/1s/1mA between secondary windings /primary
Working Voltage: 600Vrms max
Output voltage: 20.0±1mV@200A
DCR（Ω）: 420Ωmax
Operate temperature:-25～85℃ 0～85%RH
Store temperature :-35～100℃ 0～85%RH
Why Choose ZTC’s Rogowski Coils? (Refined — technical, process & market focus)
| Feature | ZTC Rogowski Coils | Typical Other Suppliers |
|---|---|---|
| Precision & Stability | √ Automated tension-controlled winding + in-line calibration and SPC; Typical linearity ±0.5% across rated range; low drift and repeatable performance. | × Manual or semi-automated winding; limited batch calibration and traceability; larger unit-to-unit variance. |
| Quality & Compliance | √ ISO 9001 factory; RoHS-compliant materials; CE/ETL available. 100% electrical testing plus environmental (temperature cycling, aging) and EMI checks; full lot traceability and test reports. | × Partial or spot testing; fewer environmental/EMI tests; limited traceability and documentation. |
| Customization & Integration | √ True OEM capability: custom lengths (up to 2 m), selectable sensitivity (e.g. 50–500 mV/kA), output options (0–5 V / 4–20 mA), integrator combos and connector choices. Application-specific drawings and sample program. | × Mostly catalog SKUs; few output/interface options; custom work is slower or outsourced. |
| R&D, Supply Security & Support | √ Patents and ongoing R&D; in-house winding machines making capability for supply continuity; dedicated engineering for integration and tuning; global technical support and evaluation units. | × Limited R&D investment; cores often outsourced; support tends to be reactive and fragmented. |
Why CHOOSE US
ZTC RC series Rogowski Coils – Excellent quality and technology come from professionalism and innovation.
Technical Leadership
Over 20 patented technologies with continuous R&D investment to ensure our Rogowski Coils remain at the forefront of industry performance.
Certified Quality
Factory direct selling, ISO 9001 manufacturing, CE/ETL certified, RoHS-compliant, trusted by global brands.
Precision & Wide Bandwidth
Accurate measurement from 50 Hz to 20 kHz with ±1.0% linearity, ensuring reliable performance for both low-frequency and high-frequency applications.
Custom Engineering Service
An experienced engineering team providing one-stop solutions from concept to mass production, fully tailored to your electrical and mechanical requirements.
Our Story
Xiamen ZTC Technology Co., Ltd (Zentar® ) found in 1993 is located in Xiamen, a harbor city in Southeast China. It is about 3 hours by high-speed train far from Shenzhen.
We are a leading manufacturer of current transformers for electrical safety and electric measuring industry. By three decades development, around 250 workers producing more than 2000+ customized products to meet customers’ various needs.
As an innovation-oriented enterprise and IATF16949 factory, we bring into automated equipments and machines to increase production efficiency and meet customers in auto industry high quality standard.
Stay ahead, and constantly committed to advanced technologies, research and development of new products and new markets. Providing high quality current transformers and expertise in assisting customers develop and launch projects for EV charging modules, GFCI, RCD and wireless energy monitors.
- ISO 9001 14001 IATF16949 Factory
- Automated Production
- Industry And Technical standards Maker
- Industry-University-Research Collaboration
- Leading Supplier Of Nickel alloy Ring Cores Used In GFCI And RCD
- Years In Service 30+
- RoHS REACH Compliance
- UL ETL CE CCC Certified
- The Fast Growing Of small And Medium Enterprise
- Honoured with an award of innovation-oriented enterprise
What We Offer
As a high-tech orientation enterprise and industrial manufacturing entity, we dedicate provide our valued customers from design concept to final products delivery.
Industry Expertise And Professional Advice
We have well educated engineers collaborate with rich experienced technican dedicating to project developing and problem solving. Providing professional advice for split core current sensor, differential current transformer mechanical design, electrical parmeters setting for EV charging solution, energy monitor system application.
High Efficiency And Sufficient Production Capacity
Our plant covers 20,000 square meters holding more than 300 well skilled workers and hundreds winding machines and testing instruments with automated equipments. We are pleasure to meet your requirments at different stages of project, small lot and bulk orders are all available for manufacturing.
Stable Performance And Reliable Quality
As current transformers are kinds of critical components used for electrical safety devices, we highly value quality in the whole process. By doing 100% incoming and outcoming inspection, customers are satisfied with our strict quality control.
QUALITY CONTROL
Incoming Inspection
- GB/T2828.1 Sampling Standard
- Strict Quality Inspection For Each Batch (AQL Standard)
- Suppliers Audit Regularly
In-process Inspection
- Operators Self-Checking 2 Hours / Time
- Production According To Manufacturing Instruction (SOP)
- 6S Management
- Equipment Periodic Maintenance
Outgoing Inspection
- Batch Tracking - Product Traceability
- 100% Electrical Output Testing
- Delivery Inspection Report Checklist
Hear from our clients
Our clients love working with us, just read what they have to say!
“ZTC’s reliable delivery schedules and competitive pricing have made them a trusted partner in our supply chain. Their ISO 9001 processes give me confidence that every shipment meets our specifications without surprises.”
Hewitt
Procurement Manager
“The wide bandwidth and ±1.0% accuracy of ZTC’s Rogowski Coils fit perfectly into our energy monitoring systems. Their engineering team provided detailed technical support, making integration smooth and efficient.”
Vikram
Technical Engineer
“Every batch from ZTC passes our incoming inspection without issue. Their RoHS-compliant materials and 100% product testing align with our strict quality standards, reducing rework and warranty claims.”
Grey
Quality Manager
“The lightweight, flexible coil design is a game-changer for installation. I can fit them around large busbars without disconnecting power, saving hours of work and minimizing downtime for our clients.”
Bill
Electrician
Get a quote
We would love to speak with you.
Feel free to reach out using the below details.
Get in Touch
- Provide you current transformers solution.
Address
- No.18 Xiangming Rd, Xiang An, Xiamen, Fujian, China 361101
Hours
- Mon-Fri 8:00AM - 5:30PM
