MFM284

MFM284

MFM284

Product catalog summary
Display Specifications: The device features a 3-row LCD with backlight, capable of displaying up to 8 digits for energy. It includes LED indications for energy integration and measures parameters such as voltage, current, frequency, power factor, and various types of power and energy. It also detects phase sequence and connection errors.
Accuracy: The accuracy levels are specified as ±0.5% for voltage and current, ±0.01 for power factor, ±0.1% for frequency, and 1% for power. Energy accuracy is classified as Class 1.
Memory and Electrical Connection: The device retains memory for 10 years and supports multiple electrical connections including 3Ø - 3 wire, 3Ø - 4 wire, 2Ø - 3 wire, and 1Ø - 2 wire. It has a power consumption of 8VA max and operates within a frequency range of 45 to 65Hz.
Input Specifications: The input voltage range is 11 to 300V AC (L-N) and 19 to 519V AC (L-L). The nominal input current is 5A AC, with a minimum of 11mA and a maximum of 6A. Display scrolling can be automatic, manual, or default.
Settable Parameters: Programmable parameters include PT primary (100V to 500kV), CT secondary (1/5A), CT primary (1/5A to 10kA), and PT secondary (100V to 500V AC).
Output Specifications: The pulse output voltage range is up to 24V DC with a current capacity of 100mA max. Communication is facilitated via RS485 and MODBUS RTU protocol, supporting a transmission distance of up to 500 meters.
Auxiliary Supply and Environmental Specifications: The supply voltage ranges from 85 to 270V AC. The operating temperature is between -10°C to 55°C, with storage temperatures from -20°C to 75°C. Humidity tolerance is up to 85% RH.
Mechanical Specifications: The device weighs 318 grams and is designed for panel mounting. It complies with various EMI/EMC standards, including IEC 61326-1 and IEC 61000 series for immunity and emission.
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Catalog excerpts

MFM284-1

Multifunction Meter Compact Size 3Ø True RMS (Voltage, Current) 3Ø Power (Active, Reactive, Apparent) Energy (Active, Reactive, Apparent) Programmable CT / PT Primary / Secondary RS485 Communication MODBUS RTU Protocol % THD Upto 31st Level Display Specifications Output Specifications 3 rows, LCD with Backlight 4 (Lowest 8 digits for energy display) Input Specifications Electrical Connection Pulse Output Voltage Range : External 24V DC max Current Capacity : 100mA max Communication, Interface and Protocol Communication Address Transmission Mode Half duplex Transmission Distance Transmission Speed Input Voltage Range Input Current Range Stop Bits Response Time 100ms (max and independent of boud rate) Display Scrolling Automatic / Manual / Default Power Consumption Display Reset Programmable (For energy & Max demand) For energy : 0.01k, 0.1k, 1k, 0.01M, 0.1M, 1M (depending Upon CT ratio x PT ratio) For Power, Voltage, Current : Auto Resolution For Power Factor : 0.001, Harmonics 0.1% Voltage (L - N / L - L) : ±0.5% of F.S. Current : ±0.5% of F.S. Power Factor : ± 0.01 Frequency : ±0.1% Power (Active, Reactive, Apparent) : 1% Energy (Active, Reactive, Apparent) : Class1 Memory Retention Measuring Parameters Voltage (L - L / L - N) (Individual / Average), Current (Individual / Average), Frequency, Power Factor (Individual / Total), Active, Reactive & Apparent Power (Individual / Total), Active, Reactive & Apparent Energy, Demand (Min / Max Active Power, Min / Max Reactive Power, Max Apparent Power), Phase Wise Import Export & Total % THD upto 31st Level for Voltage & Current Max Demand Current, Neutral Current, Phase Sequence Detection, Current Connection Error Detection Auxiliary Supply Specifications Supply Voltage Settable Parameters CT Primary Environmental Specifications Temperature Operating Temperature : -100 to 550C Storage Temperature : -200 to 750C

 Open the catalog to page 1
MFM284-2

Multifunction Meter Compliance Mechanical Specifications Mounting Product Standard : IEC 61326 - 1 Category Dimensions OUTLINE Dimensions (in mm) PANEL CUTOUT Dimensions (in mm) Standards Compliance Level IV (Air Discharge : 15kV), IEC 61000 - 4 - 2 (Contact Discharge : -8kV) Surge Immunity Radiated Susceptibility Level III, 80 to 1000MHz (10V / m) IEC 61000 - 4 - 3 Level II, 1.4GHz to 2GHz (3V / m) Level I, 2GHz to 2.7GHz (1V / m) + / - 2kV Common Mode, (Line to Ground) + / - 1kV Differential Mode, (Line to Line) Conducted Susceptibility IEC 61000 - 4 - 6 Level II (3V / m) Voltage Dips and Interruptions...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.
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