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.
| Parameters | |||
|---|---|---|---|
| Type | Name | Statistics | |
| Input | Supply | Three Phases and Neutral of a 3P4W system / ThreePhases 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 |
||
| PowerSupply | Auxiliary Supply : 80 - 480 VAC, 50-60 Hz. | ||
| Output | Relay | Two. Individually Field Programmable.5A @ 250 VAC, Resistive Load | |
| MEASUREMENT | True RMSBasicParameters | Voltage(Volts L-N & L-L) | VL-N - Accuracy : 0.5% of ReadingVL-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 |
||
| PowerQuality | 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 | |
| Input | Supply | Three Phases and Neutral of a 3P4W system / ThreePhases of a 3P3W system |
| Input | Voltage | Direct Voltage Input : 25 to 500V L-L, 20 to 300V L-N PT Ratio : Site Selectable Burden : 0.5VA |
| Input | 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 |
| Input | Power Supply | Auxiliary Supply : 80 - 480 VAC, 50-60 Hz |
| Output | Relay | Two. Individually Field Programmable.5A @ 250 VAC, Resistive Load |
| Measurement - True RMS Basic Parameters | Voltage(Volts L-N & L-L) | VL-N - Accuracy : 0.5% of Reading VL-L - Accuracy : 1.0% of Reading |
| Measurement - True RMS Basic Parameters | Current(Amps IR, IY, IB) | Accuracy : 0.25% of Reading |
| Measurement - True RMS Basic Parameters | Line Frequency | 45 to 55 Hz, Accuracy : 0.3% of Reading |
| Measurement - Power | Active Power (P) | Accuracy : 1% of Reading (For IPFI > 0.5) |
| Measurement - Power | Reactive Power (Q) | Accuracy : 1.5% of Reading (Between 0.5 Lag to 0.8 Lead) |
| Measurement - Power | Apparent Power (S) | Accuracy : 1% of Reading |
| Measurement - Power | 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 |
| Measurment - Energy | Total Active Energy (KWh) | Range of Reading : 0 to 9999999.9 KWh Accuracy : class 1.0S |
| Measurment - Energy | Total Apparent Energy (KVAh) | Range of Reading : 0 to 9999999.9 KVAh Accuracy : 1.0% of Reading |
| Measurment - Energy | Total Apparent Energy (KVARh) | Range of Reading : 0 to 9999999.9 KVARh Accuracy : 1.5% of Reading |
| Measurment - PowerQuality | Individual Wave form for each voltage and current | |
| Measurment - PowerQuality | THD for each current and voltage in three phases | |
| Measurment - Dimensions | Bezel | 96 X 96 mm |
| Miscellaneous - Dimensions | Panel Cutout | 90 X 90 mm |
| Miscellaneous - Dimensions | Depth of installation | 55 mm |
| Miscellaneous | Display | 128X64 LCD |
| Miscellaneous | Operatin temp | 10°C to 50°C |
| Miscellaneous | Weight | 0.35 Kgs (Approx.) |
| Miscellaneous | Min. Operating Current | 0.4% to 120% of CT primary |
| Miscellaneous - Comm. | RS485 | Modbus-RTU protocol |
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