In modern industrial IoT, building energy management, and flexible power distribution systems, energy meters not only need to cope with complex installation environments but also need to ensure data continuity under extreme conditions.
As our flagship product, the KPM37 multifunctional energy meter has undergone a major upgrade—fully supporting two core functions: Rogowski coil access and 24V backup power supply (UPS) linkage. It is worth emphasizing that these two advanced functions are exclusive to the KPM37 (not available in other conventional energy meters). To meet the differentiated needs of various industrial scenarios, the KPM37 adopts a flexible hardware design that allows users to choose one of the two (not simultaneously use), enabling precise customization based on their specific pain points.
Core Function Analysis: Two Key Advantages, Tailored to Specific Applications
To achieve optimal cost-effectiveness and electrical structure optimization, the KPM37 supports customization of the following two functional schemes, allowing users to choose based on their application’s priorities:
Scheme A: Rogowski Coil Solution (Focus: Rapid Retrofitting and High Current Detection)
The Rogowski coil is a hollow toroidal coil specifically designed for measuring alternating current.
Non-destructive, wire-free installation: Utilizing an open, flexible design, installation can be completed simply by connecting the coil directly to the busbar or cable, significantly reducing downtime and labor costs associated with retrofitting.
Wide measurement range and high precision: The Rogowski coil exhibits no magnetic saturation, maintaining extremely high measurement linearity from tens of amperes to tens of thousands of amperes, making it particularly suitable for distribution cabinets with limited space where traditional current transformers cannot be installed.
Option B: 24V Backup Power Solution (Focus: Power Outage Monitoring and Data Security)
When the main power grid fails or a sudden power outage occurs, ordinary meters will instantly go black and disconnect. However, the KPM37, equipped with the 24V backup power function, can achieve “uninterrupted operation during power outages.”
Zero-interrupted data capture: Instantly takes over the meter’s internal power supply, completely recording the voltage drop and waveform distortion at the moment of power failure, and securely storing it in memory.
Continuous communication and proactive alarm: The communication module remains active during power outages, sending “power outage alarm” signals to the backend management system, eliminating the need for blind troubleshooting.
Why Can’T These Two Functions Be Used Simultaneously?
This stems from the KPM37’s pursuit of an extremely compact design and electrical isolation safety. The Rogowski coil signal conditioning circuit requires a high-precision integrator, while the 24V backup power module requires independent power conversion and isolation protection. To achieve the highest measurement accuracy and stability within the limited internal space of the meter, the KPM37 has optimized and integrated its internal expansion slots.
If your pain point is “limited space and inconvenient power outage construction,” please choose the Rogowski coil version.
If your pain point is “must ensure continuous data during power outages and require power outage alarms,” please choose the 24V backup power version.
Typical Application Scenario Comparison Guide
Based on this unique “two-option” feature, the KPM37 can accurately cover vastly different high-end application scenarios:
Scenario 1: “Non-genuine power outage” green energy-saving retrofit of existing buildings and factories
Selected Solution: KPM37 (Rogowski coil version)
Application Case: A large textile factory or wafer fab needs to refine its workshop energy consumption upgrade. Since the production line operates 24 hours a day, a one-day power outage results in significant losses. Traditional current transformers cannot be installed. In this case, using the KPM37 with a flexible Rogowski coil allows maintenance personnel to install the coil on the busbar in just a few minutes without power outages or cable cuts, immediately initiating accurate current and energy consumption monitoring.
Scenario 2: Monitoring of High-Current/Nonlinear Loads in Precision Manufacturing and Smelting
Selected Solution: KPM37 (Rogowski Coil Version)
Application Case: In harsh electrical environments with high current and abundant harmonics, such as electric arc furnaces, large welding machines, and heavy-duty frequency converters, ordinary current transformers are prone to magnetic saturation, leading to measurement distortion. The KPM37 Rogowski Coil Version, with its non-magnetic saturation and wide frequency response, can perfectly capture real electrical energy data under high current conditions.
Scenario 3: Power Protection for Data Centers, Communication Base Stations, and Critical Medical Facilities
Selected Solution: KPM37 (24V Backup Power Version)
Application Case: In data center (IDC) or hospital ICU power distribution systems, the requirements for power supply continuity are extremely stringent. When the mains power suddenly fails and the UPS power supply is switched off, the KPM37 (24V Backup Power Version) relies on an external backup power source to maintain its operation, completely uploading transient data and SOE (Event Sequence Record) to the cloud backend, helping engineers locate the fault source in seconds.
Scenario 4: Unmanned Substation and Photovoltaic/Wind Power Combiner Box
Selected Solution: KPM37 (24V Backup Power Version)
Application Case: In unmanned substations in remote areas, power outages at night or during severe weather can prevent maintenance personnel from reaching the site promptly. The KPM37 maintains communication via a 24V backup power supply, sending a “final warning” (power outage alarm) with timestamps and fault parameters to headquarters before the screen goes black, buying valuable time for remote dispatch and emergency response plans.
Conclusion
The KPM37 multi-functional energy meter doesn’t pile on redundant functions; instead, it allows customers to define the core technology themselves. Whether it’s the Rogowski coil solution for high efficiency and non-destructive installation, or the 24V backup power solution for ultimate data security and nighttime operation, the KPM37, with its customized core configuration, becomes the most efficient and reliable “vanguard” in your power monitoring system.
