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The electrical power meter, Xpert is a micro-controller based unit which measures various electrical parameters, and sequentially displays on a 128X64 backlit LCD.
The unit measures the three phase voltages, currents, frequency, power factors, individual Harmonic data as Histogram including Total Harmonic Distortion as well as individual current and voltage waveforms for all three phases. Based on these inputs, the system KVA, KW and KWh can also be calculated.
For the correct operation of the unit, the only basic care required is to ensure that the phase sequence of the three phases is R-Y-B and the polarity of the CT secondary is correct.
The unit is fully solid state and will give years of trouble-free service once installed correctly.

Xpert Product Catalog Xpert

• Features
• Specifications

• Compact 96 X 96 X 55 mm!
• Graphical Display 128 X 64.
• Accuracy: Class 1.0 & Class 0.5 (Optional).
• Odd Harmonics up to 15^th of individual Voltage and Current waveforms including THD.
• RS485 port for Communication EMS/ PLC/ SCADA (Optional).
• Dual Source Measurement (Optional).
• Two Relays - individually programmable for Alarm/ Trip (Optional).
• Histogram & Tabular display of Harmonic content.
• Wave shape display for all voltages & currents.

Parameters
Type		Name	Statistics
I n p u t		Supply	Three Phases and Neutral of a 3P4W system / Three Phases of a 3P3W system
		Voltage	Direct Voltage Input : 25 to 500V L-L, 20 to 300V L-N PT Ratio : Site Selectable Burden : 0.5VA
		Current	Secondary Current Input : 5A or 1A (Site Selectable) CT Ratio : Site Selectable Range of Reading : 5 – 5000A Burden : < 1.0VA Overload : 5A CT = 6A RMS Continuous 1A CT — 1.2A RMS Continuous
		Power Supply	Auxiliary Supply : 80 - 480 VAC, 50-60 Hz.
Output		Relay	Two. Individually Field Programmable. 5A @ 250 VAC, Resistive Load
M E A S U R E M E N T	True RMS Basic Parameters	Voltage (Volts L-N & L-L)	VL-N - Accuracy : 0.5% of Reading VL-L - Accuracy : 1.0% of Reading
		Current (Amps IR, IY, IB)	Accuracy : 0.25% of Reading
		Line Frequency	45 to 55 Hz, Accuracy : 0.3% of Reading
	Power	Active Power (P)	Accuracy : 1% of Reading (For IPFI>0.5)
		Reactive Power (Q)	Accuracy : 1.5% of Reading (Between 0.5 Lag to 0.8 Lead)
		Apparent Power (S)	Accuracy : 1% of Reading
		Power Factor	For Individual phases and System Accuracy : 1.0% of Reading (IPFI=0.5) Range of Reading : 0.05 to 1.00 Lag/Lead
	Energy	Total Active Energy (KWh)	Range of Reading : 0 to 9999999.9 Accuracy : class 1.0S
		Total Apparent Energy (KVAh)	Range of Reading : 0 to 9999999.9 Accuracy : 1.0% of Reading
		Total Apparent Energy (KVARh)	Range of Reading : 0 to 9999999.9 Accuracy : 1.5% of Reading
	Power Quality	Individual Wave form for each voltage and current
		THD for each current and voltage in three phases
MISC.	Dimensions	Bezel	96 X 96 mm
		Panel Cutout	90 X 90 mm
		Depth of installation	55 mm
	Display	128X64 LCD
	Operating temp	10°C to 50°C
	Weight	0.35 Kgs (Approx.)
	Min. Operating Current	0.4% to 120% of CT primary
	Comm	RS485	Modbus-RTU protocol

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