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Smart medium energy meter - QE640

Medium Voltage Smart Energy Meter QE-640
Medium Voltage Smart Energy Meter QE-640

Smart medium energy meter can be used for industrial zones or in residential/commercial complexes to conduct energy management and detect losses. Remotely monitor and control the meter. QE640 accuracy is very high with an error of less than 0.00%, which ensures no wasted energy for the operator. 


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MV tariff

Support medium voltage tariff, CS and maximum demand fee

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Firmware update

Remote firmware update in bulk with activation date

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Communication module

Plug and Play: GPRS, G3-PLC, RS485, RF

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myQuill App

Integrates with app for instant readings, debt and payments

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CT/PT ratio

Current & Voltage transformer ratio connection configuration



International standard for utility meter data exchange

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Remote communication

Send any configuration or retrieve data remotely



Standard Transfer Specification 

Highest token security



○ Compliance with IEC and EN standard:

IEC 62053-22 (Class 0.2 & 0.2s), IEC62053-23, EN 50470-1, EN 50470-3

○ Connection type: 3P4W CT/PT

○ Accuracy: Cl (0.2) for active – CL(2) for reactive


○ Nominal voltage: 3x63.5/110V

○ Operating range: 0.8Un to 1.2 Un

○ Power consumption: Voltage circuit ≤ 2W, 10VA

○ Current circuit ≤ 6 VA


○ 1(6)A


○ 50Hz (± 5%)

○ Real-Time Clock (RTC)

○ Accuracy within 0.2 seconds per day at 23°C

LCD Display

○ 8 characters of 7 segment display

○ Digital size: 4mm x 8.2mm

○ LCD display available without main power

○ Programmable display items

○ With backlight

LED Display

○ Active pulse LED (1000)

○ Alarm LED

○ Credit LED

○ Buzzer for low/no money


○ Battery easy replaced

○ Voltage: 3.6V

○ Backup time: 10 years with power

○ GPRS with supercapacitor

Measured Values

○ Active Energy (kWh) (Import/Export)

○ Active Power (kW) (Import/Export)

○ Instantaneous Irms, Vrms, Frequency, Power Factor, Max power


○ 10 consumption step-tariff

○ 10 customer fee step-tariff

○ Flat-Rate & TOU


○ Can connect with external relay

Event Logs

○ Tampering detection, power quality and general events

Load Profile Energy & Demand

○ Support max capture object

○ Capture interval 15, 30, 60 minute

○ Quadrant reactive energy

○ Load cycle every 15 min


○ Near-infrared communication 

port: IEC 62056-21 E mode

○ RS485 comm. port: 9600bps DLMS HDLC



○ Operating range limit: -40°C to +70°C

○ Storage range limit: -40°C to +80°C

○ Relative humidity: ≤ 95%RH

○ Ingress protection: IP54

Dimensions and Weight

○ Dimensions: 290mm x   170mm x 85mm

○ Weight: 2.2kg (Approx.)

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