In the archipelago of the Union of the Comoros, the stability of the electrical grid is a cornerstone for economic development. As the nation moves towards the Comoros Emerging 2030 vision, modernizing the power infrastructure on Grande Comore, Anjouan, and Mohéli becomes paramount. Zero Phase Current Transformers (ZPCT) play a non-negotiable role in this transition. These specialized sensors are the "first responders" in electrical safety, designed to detect infinitesimal leakage currents that could lead to catastrophic equipment failure or fire hazards in high-humidity coastal environments.
The Comorian utility provider, SONELEC, faces unique geographical challenges. High salinity levels in Moroni and surrounding coastal areas accelerate the degradation of insulation materials. Our ZPCTs, particularly those featuring 35kv Molded CT and casting resin insulation, are engineered to withstand tropical corrosive environments, ensuring that ground faults are detected before they compromise the grid's integrity.
Detects unbalanced currents in 3-phase systems to trigger protective relays instantly.
Essential for the increasing integration of solar microgrids across the islands.
High sensitivity (mA level) detection to prevent electric shocks in residential and commercial sectors.
Globally, the shift towards Smart Grids and Internet of Things (IoT) integration is driving the demand for high-accuracy sensing. In Comoros, the roadmap involves transitioning from basic protection to predictive maintenance. By utilizing our ZPCTs with 0.5s accuracy class, Comorian engineers can monitor the health of transformers and switchgear in real-time.
Looking forward, the rise of renewable energy installations—specifically solar PV arrays in Mohéli—requires ZPCTs that can handle DC residual current components. Our R&D team is already optimizing ferrite core technologies to support the next generation of energy management in developing island nations.
As a leading manufacturer based in Fujian, China, Zentar® (Smrtr Technology) offers a unique advantage to the Comorian market: Supply Chain Resilience. Our 40,000sqm facility and annual capacity of 50 million magnetic components ensure that we can fulfill large-scale infrastructure orders without the long lead times associated with European suppliers.
We understand that Comoros operates under specific regulatory frameworks and often follows international IEC standards. Our products, including the Heyi Ctk-45 and various split core voltage transformers, are fully compliant with global safety certifications. We provide comprehensive technical documentation to assist Comorian contractors in seamless integration.
Fujian Smrtr Technology Co., Ltd. Zentar®, a leading manufacturer of magnetic components for electrical safety and power measurement, was founded in 1993. Based in Xiamen with over 410 employees, we specialize in customized service, design, and manufacturing of current transformers and RCD units.

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In the Comorian environment, small leakage currents can indicate early signs of insulation failure due to humidity and salt. A high-accuracy ZPCT detects these at the milliampere level, allowing for maintenance before a full system blackout occurs.
Yes, we offer specialized models for both 50Hz (standard in many regions) and 60Hz (as seen in some marine and industrial applications in Comoros), ensuring accurate metering and protection across different island power grids.
Our Split Core Zero Phase Transformers allow for installation without breaking the existing primary conductor. This is vital for retrofitting old electrical panels in Moroni and Mutsamudu without causing extensive downtime.
We offer comprehensive remote technical support, design consulting, and customized manufacturing to meet the specific voltage and insulation requirements of Comoros’ unique grid structure.