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Specification & Description
| Specification | Description |
|---|---|
| Part Number | A9MEM3255 |
| Manufacturer | Schneider |
| Series | Acti 9 |
| Product Type | Energy Meter |
| Measurement Capabilities | Active and reactive energy, active and reactive power, current, voltage |
| Metering Type | Active, reactive, apparent energy (signed, four quadrant) |
| Device Application | Multi-tariff, partial meter, sub billing |
| Accuracy Class | Class 0.5S active energy conforming to IEC 62053-22 and IEC 61557-12, Class C active energy |
| Input Type | External CT 1 A or 5 A |
| Rated Current | 5 A |
| Rated Voltage | 100…277 V, 173…480 V |
| Network Frequency | 60 Hz, 50 Hz |
| Technology Type | Electronic |
| Display Type | LCD display |
| Sampling Rate | 32 samples/cycle |
| Measurement Current Range | 1…32767000 mA |
| Maximum Value Measured | 99999999 MWh |
| Tariff Input | Tariff (4) |
| Communication Port Protocol | Modbus RTU at 9.6, 19.2, and 38.4 kbauds, even/odd or none, insulation 4000 V |
| Communication Port Support | Screw terminal block RS485 |
| Local Signalling | Green indicator light for power ON, yellow flashing LED for accuracy checking, alarm for overload, yellow indicator light for active Modbus port communications |
| Number of Inputs | 1 digital 0...5 V/11...40 V 24 V DC |
| Number of Outputs | 1 digital (static) |
| Output Voltage | 5...40 V DC @ 50 mA |
| Mounting Mode | Clip-on |
| Mounting Support | DIN rail |
| IP Degree of Protection | IP40 (front panel), IP20 (body) |
| Operating Altitude | < 2000 m |
| Colour | White |
| Dimensions | Width: 90 mm, Height: 95 mm, Depth: 69 mm |
The Schneider Acti 9 Series Energy Meter, model A9MEM3255, is a sophisticated three-phase energy metering device designed to provide precise measurements of electrical consumption across a variety of applications. Engineered for reliability and accuracy, this energy meter boasts a compact form factor with dimensions of 90 x 69 x 95 mm, making it suitable for installation in space-constrained environments.
Equipped with a clear LCD display, the A9MEM3255 offers real-time insights into active and reactive energy, power, current, and voltage, facilitating better energy management and efficiency. The meter is capable of handling a wide voltage range from 173 to 480 V and is compatible with external current transformers rated at 1 A or 5 A, allowing for flexibility in various electrical setups.
This energy meter also features a pulse output for integration with energy management systems, and it supports Modbus communication over RS485 for seamless connectivity with building management systems or industrial control systems. The inclusion of multi-tariff capabilities enables the meter to support complex billing arrangements, making it an ideal choice for sub-billing and cost allocation.
The A9MEM3255 is compliant with the EU RoHS Directive, ensuring that it meets the highest standards for environmental protection and sustainability. Its robust design is complemented by an IP40 rating for the front panel and IP20 for the body, providing a degree of protection against ingress.
Overall, the Schneider A9MEM3255 is a versatile and reliable choice for energy monitoring in commercial buildings, industrial facilities, and residential complexes, offering users a comprehensive solution for tracking and optimising their energy consumption.
Commonly Asked Questions
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Frequently Asked Questions
What type of energy measurements can the Acti 9 Series Energy Meter provide?
The Acti 9 Series Energy Meter is capable of measuring active and reactive energy, as well as active and reactive power. It also measures current and voltage, providing a comprehensive overview of energy consumption.
Can this energy meter be used for multi-tariff metering?
Yes, the energy meter is designed for multi-tariff applications, allowing for the monitoring and billing of energy usage across different tariff rates.
What is the accuracy class of this energy meter?
The energy meter falls under the accuracy class 0.5S for active energy as per IEC 62053-22 and IEC 61557-12, and class C for active energy in accordance with EN 50470-3.
Is the energy meter suitable for sub-billing applications?
Absolutely, the energy meter is suitable for sub-billing applications, making it ideal for use in multi-tenant buildings or departments within an organisation to allocate energy costs accurately.
What type of communication protocol does the energy meter support?
The energy meter supports the Modbus RTU communication protocol, allowing for easy integration with building management systems and other Modbus-compatible devices.
What is the rated voltage range for this meter?
The meter supports a rated voltage range from 100 to 277 V for lower voltages and 173 to 480 V for higher voltages, accommodating a wide range of electrical systems.
How can the energy meter be mounted?
The energy meter is designed for clip-on mounting, making it easy to install on a DIN rail within electrical distribution equipment.
What is the ingress protection rating of the energy meter?
The front panel of the energy meter has an IP40 rating, while the body of the device has an IP20 rating, as per IEC 60529 standards.
Does the energy meter have any local signalling features?
Yes, the energy meter includes local signalling features such as a green indicator light for power on, a yellow flashing LED for accuracy checking, and a yellow indicator light to show active communications on the Modbus port.
What type of inputs and outputs does the energy meter have?
The energy meter is equipped with one digital input and one digital (static) output, supporting a range of external control and monitoring functions.
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