Description
What is a Metering Panel?
- A Metering Panel, also widely referred to as Revenue Metering Panel, Tariff Metering Panel, Billing Metering Panel, High Voltage (HV) Metering Panel, Metering Cubicle and Smart Grid Metering Cubicle in the power industry, is a dedicated enclosed cabinet designed for power system metering. It is specially used to install energy meters and supporting metering equipment for power measurement and data management.
- In accordance with national standards, a complete energy metering system consists of four core components: energy meter, metering CT/PT, metering secondary circuit, and metering cabinet. This fully enclosed panel integrates all above devices to achieve accurate energy measurement, automatic data collection and standardized operation management, covering conventional power stations, photovoltaic power plants and various smart grid scenarios.
Composition & Structure
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Component
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Description
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Cabinet Body
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Made of powder-coated cold-rolled steel plate with IP30 protection rating. It features a front single-opening glass door for convenient meter reading and a rear double-opening metal door for easy equipment maintenance.
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Energy Meters
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Core metering devices mounted on the panel front, compatible with electronic and smart kWh meters to meet diverse grid metering requirements.
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Acquisition Terminal
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Specialized data acquisition equipment for remote meter reading and real-time energy data upload.
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Instrument Transformers
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Metering-grade CT/PT installed inside the rear cabinet, connected to energy meters via standardized secondary cables.
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Terminal Blocks
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Adopts Phoenix or equivalent high-quality terminals, ensuring standardized, neat and safe wiring.
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Auxiliary Equipment
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Optional accessories include power quality monitor, control switch, encryption device, server and other supporting components.
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Anti-Theft Design
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Equipped with a double-enclosed protective structure and tamper-proof screws on both front and rear sides, effectively preventing electricity theft and data tampering.
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Typical dimensions: 2260 × 800 × 600 mm (H × W × D); cabinet color is customizable.
Main Functions
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Function
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Description
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Energy Metering
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Accurately measures active and reactive energy, serving as the authoritative basis for official electricity billing and tariff settlement.
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Data Acquisition & Upload
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Automatically collects and uploads metering data to power dispatch systems and marketing management systems through the acquisition terminal.
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Gateway & HV Metering
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Provides high-precision metering for key grid gateway points, including the high-voltage side of main transformers and startup/backup transformers, applicable to all high-voltage metering scenarios.
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Anti-Electricity Theft
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The integrated tamper-proof and fully enclosed structure prevents manual data modification and effectively avoids electricity theft risks.
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Power-off Data Protection
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Built-in data retention function ensures that recorded energy data will not be lost after external power interruption.
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Communication & Networking
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Supports RS485 and Ethernet communication protocols, and can be seamlessly connected to DCS, NCS and dispatch data networks to adapt to smart grid operation requirements.
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Application Places
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Application Scenarios
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Typical Usage
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Thermal / Hydro Power Plants
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Installed in central control rooms for gateway metering at main transformer HV side, startup/backup transformer HV side and line outlet side.
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110kV ~ 500kV Substations
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Applied for official power billing and tariff metering, supporting unified data management with energy acquisition terminals.
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Large Industrial & Mining Enterprises
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Used for internal power consumption statistics, energy metering and operational performance assessment.
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New Energy & Solar Power Plants
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Dedicated to photovoltaic power generation metering and grid-connected electricity settlement for new energy projects.
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Smart Grid Projects
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Functions as a smart grid metering cubicle to realize intelligent monitoring, statistics and unified management of grid energy data.
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Installation & Usage
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Step
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Key Points
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① Foundation Positioning
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Fix the cabinet firmly on the channel steel foundation with expansion bolts, and control the verticality deviation within 1.5 mm.
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② Equipment Installation
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Install energy meters on the front panel and CT/PT devices at the rear of the cabinet. Arrange secondary cables in standard routes and complete standardized wiring.
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③ Power-on Commissioning
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Check CT/PT polarity and phase sequence, verify metering accuracy via standard energy injection, and confirm normal communication of the acquisition terminal.
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④ Inspection & Acceptance
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Install tamper-proof seals after commissioning. Professional metering personnel conduct inspection and file relevant data into the power marketing system.
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⑤ Routine Maintenance
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Check the integrity of cabinet seals during monthly meter reading, and perform full calibration of metering devices annually.
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Market Reference Price
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Product Type
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Price (RMB)
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Basic Metering Panel (8~16 channels)
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¥5,000 ~ ¥8,000 / panel
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Standard Metering Panel (32~64 channels, with acquisition terminal)
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¥10,000 ~ ¥20,000 / panel
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High-end Smart Metering Panel (with PMU / power quality / encryption function)
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¥20,000 ~ ¥35,000 / panel
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FAQ
Q：Why Do Metering Panels Need Anti-Electricity Theft & Lead Seal Design?
A:The metering panel is a legal metering device for power trading, whose data is directly linked to electricity fee settlement. Adopting a double-layer enclosed structure, anti-prying screws and disposable lead seals, it effectively prevents artificial circuit tampering and parameter modification to ensure authentic and valid metering data, complying with the industrial specification requirements of DL/T 448.
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