Single phase energy meter with universal current input
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QE-POWER-M Single phase energy meter with universal current input INTRODUCTION Description Singel phase energy meter with universal current input: current transformers with output in voltage or in current can be used on the same inputs. One DIN box, perfect for electrical panel. Equipped with one serial output RS485 Modbus RTU for readings and one digital output for alarms. Configuration through free software. Equivalent to class 0,5S (KWh) of EN62053-22 Equivalent to class 0,5S (KVARh) of EN62053-24 Accuracy ±0,5% RDG Universal input for current measurement Energy meter TRMS measurements of distorted sine waves (voltages/currents) One digital output (mosfet) for alarms Serial RS485 output Alarms signaling through front led Dimension: 1 DIN module Three variants available: Standard, Plus, Pro Variants Standard Distorted power factor Power: Ÿ Active [W] Ÿ Reactive [VAR] Ÿ Apparent [VA] Cos φ Crest Factor Frequency [Hz] Peaks on: Ÿ Voltage V [V] Ÿ Currents I [A] THD, TDD Internal temperature [°C] MAX demand Time above given threshold for P Energies (pos, neg, total): Ÿ Active [Wh] Ÿ Reactive [VARh] Ÿ Apparent [Vah] Inverter input

GENERAL SPECIFICATION Power supply specifications AC/DC Voltage Power consumption Input specifications Working frequency Voltage Impedance Nominal voltage Un Continuous overload UMAX Current Type Current output CTs Nominal current In Not isolated (external CTs necessary) 5 AAC Crest factor Impedance Continuous overload IMAX Voltage output CTs Nominal voltage Vn Crest factor Impedance Continuous overload VMAX Accuracy (@ 25 ± 5 °C; freq = 50 Hz) Frequency Active energy class C according to EN50470-1/3 class 0,5 S according to EN62053-22 Reactive energy (if measured, see ahead) Power factor...

Transformer ratio CT and VT default 1,0; software configurable Transformer delay 0,0° @50 Hz default; software configurable Minimum display cutoff Configurable on voltage, current and power Output specifications RS485 Baudrate Address Protocol from 1200 to 115200 Baud (standard 9600) from 1 to 247 Modbus RTU Through 3 poles pluggable terminals (activated via software as an alternative to the digital output) or via T-Bus (always active) Connection Uscita digitale Use for Numbers Type Max values Alarms 1 (activated via software as an alternative to the RS485) Solid state (Mosfet) < 40 V, <...

DIGITAL OUTPUT ALARMS Rising: Normally open contact Falling: Normally closed contact Alarm Hysteresis Alarm Hysteresis Alarm Trip Value Windowed: closed contact between thresholds Alarm Trip Value Windowed: closed contact outside thresholds Note: To enable digital output alarms, RS485 terminals must be configured for digital output. Communication will be available only on T-BUS. FRONTAL LEDS Function Power (green) Powered device Bootloader active: Can be executed through Modbus command, or because of program flash corruption. At least one of the following state is present: Fail (yellow)...

ADDITIONAL INFORMATION ACCURACY (according to EN50470-3 and EN62053-24) Wh, accuracy depending on the load (current output CT) VARh, accuracy depending on the load (current output CT) Error Limits (Reactive energy) Startup current: 5 mA Limits (Active energy) Startup current: 5 mA Wh, accuracy depending on the load (voltage output CT) VARh, accuracy depending on the load (voltage output CT) Limits (Reactive energy) Startup voltage: 1 mV Limits (Active Energy) Startup voltage: 1 mV Note: Reactive power accuracy is granted if the instrument Q calculation is according Budeanu formula....

USED CALCULATION FORMULAS Phase variables Energy metering Whi=∫ Pi (t )dt ≈Δ t ∑ P(n)i Reactive Energy t2 Active Power Apparent Power Where: P= Active power; Q= Reactive power; t1, t2 = starting and ending time points of consumption recording; n= time unit; t= time unit length; n1, n2 = starting and ending discrete time points of consumption recording. Power factor RS485 settings from Eeprom Address 1, Baudrate 9600, no parity Address 1, Baudrate 38400, no parity CONFIGURATION SOFTWARE FACILE QE-POWER-M is the configuration software of the QE-POWER-M modules. It is free and downloadable...

WIRING DIAGRAMS Monofase, 2 fili, connessione con 1 TA 16 Monofase, 2 fili, connessione con 1 TA e 1 TV Digital output on terminal 8-9-10 in digital output configuration Power supply T-bus T-bus Communication con terminal 8-9-10 in RS485 configuration Communication via T-BUS (with the proper optional connector) N.B.: Since this is a Class II device, as per "EN 61140:2004-05: Protection against electric shock – Common aspects for installation and equipment", it is forbidden the earthing of the device, to avoid damaging the device and reducing safety of the panel.

“CONFIGURATION REGISTER” 40007 This 16 bit register sets the configuration of the device. Hereafter the details Used as digital output between terminal 8 e 10. Communication RS485 is still present on T-Bus connector. Voltage channel xxxx xxxx 1xxx xxxx Current channel Standard load xxxx xxx1 xxxx xxxx PWM input voltage. Saving disabled xxxx xx1x xxxx xxxx Saving enabled Float Float swapped Integer = Float/100 Integer swapped = Float/100 Disabled xx1x xxxx xxxx xxxx Enabled, for Rogowski input Rising: Normally open contact Falling: Normally closed contact Windowed: closed contact between...