CTs and Meters in Harmony: The Integrated Measurement System of hqsensing
hqsensing, a brand of JND Electronics, was created with one clear belief
“Do not see CTs only from the CT side. Reinterpret CTs through the eyes of the meter, and design meters through the perspective of the CT.”
In our view, a current transformer (CT) and a meter must never be considered as isolated devices. They form a single, integrated measurement system.
When the insulation structure or core geometry of a CT changes, how does the meter read current waveforms differently?
How do winding design and magnetic properties influence a power quality meter’s ability to capture harmonics and waveform distortion without missing critical details?
To answer these questions, hqsensing constantly reinterprets CTs and meters against each other’s requirements. Through this process,
We design high-accuracy CTs with optimized cores, windings, insulation, and mechanical structure. We develop smart meters and power quality meters with input stages and algorithms tuned precisely to the behavior of hqsensing CTs.
The result is a tightly coupled system in which hqsensing CTs and meters are no longer separate products, but one unified, high-precision measurement platform.
Human-Centered Precision: Designed for Real-World Installations
At hqsensing, every detail matters: core flatness, winding alignment, Hall sensor response, and the measurement algorithms inside our power quality meters. But the ultimate reason is always the same: people in the field.
We design CTs, split-core CTs, Rogowski coils, and meters for the real environments where they are installed and maintained:
- A technician wearing insulated gloves, standing in front of a sealed distribution panel, trying to latch a CT safely and quickly.
- A field engineer crouching in tight spaces, routing cables to a split-core CT and a compact meter at the same time.
- A power quality or energy manager, facing massive amounts of data, trying to identify anomalies and prevent failures.
Their line of sight, hand feel, safety, and work efficiency are the first criteria we consider when defining our design standards.
That is why, even when we design a single split-core CT, we ask, “With this structure, how easy and safe will it be for a person to install it in a real panel?”
“Years from now, can this CT and meter still deliver reliable, repeatable, and trustworthy measurements?”
For hqsensing, accuracy is not completed in the laboratory. Precision is only real when a device is installed by someone’s hand in the field and continues to be trusted years later.
Global Certifications and Patents That Prove Quality, Safety, and Technology
The philosophy of hqsensing is not just emotional or conceptual. JND Electronics continuously invests in objective proof of our quality, safety, and technical excellence.
We comply with global management system standards
- ISO 9001 – Quality management system
- ISO 14001 – Environmental management system
- ISO 45001 – Occupational health and safety management system
We meet international safety standards for current and voltage sensors and measuring instruments, including:
- UL 2808
- IEC/UL 61010-1
We satisfy a wide range of global accuracy and performance standards for CTs, Rogowski coils, and meters:
- IEC 61869-2 – Accuracy and performance for current transformers
- IEC 61869-10 – Requirements for Rogowski coils
- IEC 61557-12 and IEC 62053-22 – Standards for measuring and monitoring devices and energy meters
- IEC 61000-4-30 – Power quality measurement methods
- IEEE C57.13 – Instrument transformers
In addition, JND Electronics holds numerous domestic and international patents and intellectual property rights related to:
- CT core structures and winding methods
- Current sensor and transducer design
- Power quality metering and smart meter technologies
Together, these certifications and patents serve as one clear declaration,
“hqsensing CTs and meters are designed to earn people’s trust in power systems and facilities anywhere in the world.”
Measurement Technology for People: The Ongoing Journey of hqsensing
Going forward, hqsensing by JND Electronics will continue to ask a fundamental question every time we design,
One more core lamination
One more turn of winding
One more sensor
One more meter
“How safe and how trustworthy will this technology be for the person working in the field?”
We will keep connecting,
Precision and installation practicality
Power quality and electrical safety
People and long-term reliability
into a single, coherent story of measurement technology for people.
Quietly but firmly,
hqsensing and JND Electronics will continue to develop current transformers, current sensors, power quality meters, and smart meters that make power measurement safer, more accurate, and more human-centered for sites all over the world.
