Electricity Meter

Your Professional Electricity Meter Supplier

Zhejiang Kaou Instrument Co., Ltd. is a modern manufacturing enterprise specializing in the research, development, production, and sales of smart meters, traditional mechanical meters, and power metering equipment. With an annual production capacity of one million units, the company exports its products worldwide and is recognized as one of the major exporters in China’s meter industry.

Advanced Production and Calibration

We operate three smart meter production lines and multiple high-precision calibration stations, ensuring stable large-batch output. Our annual capacity of 1 million single-phase meters and 500,000 three-phase meters supports reliable and timely supply for global projects.

Strict Quality Control and Global Certifications

Every order is backed by a full inspection process—raw material checks, hourly in-line sampling, and 12 final tests including aging and temperature shock tests. We comply with IEC, STS, CE, RoHS, ISO9001, and ISO14001 standards to guarantee consistent, safe, and compliant products.

Strong Customization Capabilities

We offer flexible customization based on local grid needs, including voltage options (110V/220V), communication protocols (RS485/LoRa), and design requirements. This ensures each meter fits the technical specifications and installation conditions of the target market.

Reliable Service and On-Time Delivery

Our team provides full pre-sales, order-tracking, logistics, and after-sales support, including multilingual documents, customs clearance assistance, and technical guidance. Standard orders ship within 30 days, helping customers reduce supply risks and maintain stable project timelines.

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Parameter

Parameter Name	Technical Requirements
Rated Voltage (Un)	230V
Basic Current (Ib)	5A
Maximum Current(Imax)	60A
Accuracy Class	Class 1 for active energy
Starting Current (Ist)	20mA (4‰Ib)
Pulse Constant	1000 imp/kWh
Operating Frequency	50Hz
Operating Temperature	Normal range: -25℃~+55℃ (3K6); Limited range: -40℃~+70℃ (3K7)
Relative Humidity	≤95% (non-condensing)
Insulation Class	Class II
Anti-interference Performance	Fast transient burst: 4kV; Electrostatic discharge: 8kV (contact)/15kV (air)
Electrical Strength	AC voltage: 4kV (50Hz, 1 minute); Impulse voltage: 6kV

Types of Electricity Meter

The electricity meters produced by our company mainly include the following types:

Single Phase Energy Meter

Single phase energy meter is an electrical device that measures power consumption (in kilowatt-hours, kWh) for homes and small businesses using a single alternating current (AC) phase, typically 220-240V, connecting one live wire and one neutral wire, recording usage for billing and energy management.

Three Phase Energy Meter

The three-phase meter is a type of electricity meter that measures electrical energy. This device, which provides accurate measurement of electrical energy consumption, is used especially in industrial facilities, large commercial areas, and some homes.

Single Phase Digital Din Rail Energy Meter

Advantages of Electricity Meter

Real-Time Monitoring of Energy Usage

One of the most significant advantages of a smart electricity meter is the ability to monitor your energy consumption in real time. Traditional meters provide only a basic reading of your energy usage, often requiring manual checks and calculations.

Accurate Billing and Elimination of Estimated Bills

Gone are the days of estimated electricity bills, which often lead to disputes and confusion. Smart electricity meters send accurate, real-time data directly to your energy provider, ensuring that your bill reflects your actual usage rather than an estimate.

Enhanced Energy Efficiency and Cost Savings

By providing detailed insights into your energy usage, smart electricity meters empower you to make smarter choices about how you consume electricity. For example, if you notice that your energy consumption spikes during certain hours, you can adjust your usage patterns to off-peak times when electricity rates may be lower.

Improved Reliability and Faster Problem Resolution

Another key benefit of smart electricity meters is their ability to improve the reliability of your electrical service. Because smart meters continuously monitor the flow of electricity, they can detect issues such as outages, voltage fluctuations, or other anomalies in real time.

Applications of Electricity Meter

Household Users

Electricity meters can be installed in households to monitor electricity usage, achieve precise measurement of electricity consumption and automatic calculation of electricity bills.

Commercial Users

In commercial venues, electricity meters can monitor electricity load and consumption in real-time, provide energy analysis and energy-saving recommendations for commercial users.

Industrial Users

In industries, electricity meters can monitor and manage the electricity usage of large equipment, improve energy efficiency, and reduce production costs.

Installation Precautions for Electricity Meters

Selecting the Installation Location

Choosing the right location for installing the power and energy meter is crucial. We take into consideration the following factors:

Accessibility: Is there easy access for maintenance and reading of the meter?

Safety: Is the location secure and free from hazards such as water, excessive heat, or mechanical damage?

Proximity to Electrical Panel: Ideally we want to position the meter as close to the main electrical panel as possible to facilitate easy wiring and connection.

Selecting the Installation Location

Proper wiring and connection are essential for accurate meter readings and safe operation. We take into account the below for safe installation:

Turn off the main power supply before beginning the installation to prevent electrical hazards.

Use appropriately sized wires and connectors suitable for the meter’s specifications.

Follow the wiring diagram provided by the manufacturer to connect the meter to the electrical panel.

Double-check all connections to ensure they are secure and properly insulated to prevent short circuits or electrical faults.

Configuring Meter Settings

Once the meter is installed and wired, it’s time to configure the settings for accurate measurement and monitoring. The easiest way to do this is through PME our power monitoring system.

Testing and Calibration

Before putting the meter into service, we perform testing and calibration to ensure accuracy and reliability. Using known data we can measure and compare the meter readings, making adjustments where necessary until we are satisfied and can validate the accuracy of the meter readings.

Monitoring and Maintenance

Once the meter installation is complete and calibrated, it is essential to establish a routine monitoring and maintenance schedule. Using PME software we can monitor the meter performance and identify any abnormalities or issues that need to be addressed. We also recommend scheduling periodic maintenance which can include cleaning, inspections, and calibration.

Precautions for Storing Electricity Meters

Dry & Ventilated

Store in a clean, dry, well-ventilated space to prevent moisture buildup, which increases short-circuit risk.

Temperature Control

Avoid drastic temperature changes; ideally, keep within 0°C to 40°C (32°F to 104°F) and maintain a stable internal temperature with heaters if needed.

Protection

Keep meters away from dust, corrosive chemicals, direct sunlight, and heavy objects.

Customizable Options

Voltage Range	110V / 120V / 220V / 230V / 240V (based on local grid standards)
Current Rating	5(20)A, 5(30)A, 10(40)A, 10(60)A, 15(80)A, or customer-specified ratings
Communication Protocol	RS485, LoRa, RF, PLC, GPRS/3G/4G, or no communication
Logo & Branding	OEM/ODM branding, label design, barcode/QR code format

Packaging and Shipping

Packaging	Protective foam + cardboard box
Shipping	Shipping by sea, by air, by express are acceptable. According to your requirements.

Our Factory

Zhejiang Kaou Instrument Co., Ltd., established in 1994 and occupying 1,600 square meters.

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Our Service

Pre-Sales Service

Product Information Support: Provide multi-lingual (e.g., target market languages), product manuals, data sheets, certification documents (e.g., CE, ISO, local market access certifications), and use cases, clearly explaining product performance, applicable scenarios, and advantages.

Customized Solutions: Provide customized product solutions based on customer needs (e.g., local voltage standards and installation environment). For example, we recommend suitable meter models for areas with unstable voltage in Africa.

Market and Policy Consulting: Answer customer questions regarding importing country tariffs, customs clearance procedures, industry regulations (e.g., power equipment standards), and logistics timelines, mitigating import risks.

Sample Services: Provide free or low-cost samples with test reports to facilitate customer testing to ensure product compatibility.

Communication Guarantee: Respond to inquiries promptly to avoid information errors.

Post-Sales Service

Order Follow-up: Provide real-time updates on production progress and inventory status, and inform customers of expected delivery times to avoid information gaps.

Logistics and Customs Clearance Assistance: Provide logistics solution recommendations (e.g., sea or air freight options), assist in preparing customs clearance documents (invoices, packing lists, certificates of origin, etc.), and connect with local customs clearance agents to resolve customs clearance issues when necessary.

Payment and Contract Support: Offer flexible payment methods (e.g., letters of credit, T/T installments), clarify contract terms (e.g., delivery dates, quality standards, and liability for breach of contract), and assist customers in understanding these details.

Production Process Transparency: Provide videos or photos of the production process to key customers, demonstrating our quality control process and fostering trust.

After-Sales Service

Installation and Technical Support: Provide multilingual installation manuals, video tutorials, or remote installation guidance. For large orders, dispatch technicians for on-site assistance (visa and travel arrangements must be confirmed in advance).

Quality Issue Handling: Define the warranty period (e.g., 1-2 years) and offer free repair, replacement, or return services for quality issues. Paid repair support is available for improper use. Spare Parts Supply: Pre-stock vulnerable parts (such as meter sensors and cables) to ensure customers can quickly purchase replacements, minimizing equipment downtime.

FAQ

Q: How do electricity meters work?

A: An electric meter works by measuring the flow of electricity to a home, which is then used to calculate energy consumption, typically in kilowatt-hours (kWh). Analog meters use the flow of electricity to spin a disk, which in turn rotates gears and dials that record the total energy used. Digital meters use electronic components to measure the current and voltage, and an internal circuit board calculates and displays the energy usage on an LCD screen.

Q: What do a and b do on an electric meter?

A: To read the meter: Press the white B button - the screen will light up. Wait until the screen says 'meter boost' - press 'A' to select 'no' and you should see numbers followed by 'KWH' Write down the numbers from left to right.

Q: How to self read an electric meter?

A: Read the meter from left to right, including all the zeros before the numbers. If a dial is between numbers, record the lower number. The exception is when the dial sits between 9 and 0, note down 9.

Q: How to understand an electric meter?

A: An electric meter is a device that measures the total amount of electricity a home or business consumes, typically in kilowatt-hours (kWh). This measurement is used to bill customers for their energy usage. There are two main types: traditional analog (dial) meters with spinning dials and modern digital (smart) meters that display the reading on a screen.

Q: What does H mean on an electric meter?

A: If you have an electric economy 7 meter, it will have two counters. Read them as before, but label each read with what the meter says – Day, High (H), Normal (N) R1, or Night, Low (L), R2. If a digit is in between numbers – like the last digit in the photo below, use the lower number. Here's an example.

Q: Do electric meters reset each month?

A: No, an electric meter does not reset every month; it continuously accumulates the total kilowatt-hours (kWh) used since it was installed. To determine your monthly usage, you subtract the previous month's reading from the current month's reading.

We're well-known as one of the leading electricity meter manufacturers and suppliers in China. Please rest assured to buy high quality electricity meter made in China here from our factory. For more cheap products, contact us now.