NRCT-300 Three-Phase Power Quality Analyzer is a new generation of precision AC electric energy measuring instrument, mainly used for calibration of three-phase energy meters and low-voltage test devices on-site and measurement of various AC parameters. It uses a 32-bit ARM and DSP processor, a high-resolution color LCD display, multiple 16-bit precision A/D converters, a built-in high-precision wide-range current transformer and a variety of current clamps, with wide measurement range and high accuracy.
Overview
Models
Product Parameters
1. Reference working conditions
Parameter | Reference value or range | Allowable deviation |
Temperature | 23℃ | ±5℃ |
Humidity | (45-75) % RH | -- |
Working power | Built-in lithium battery power supply or PT measurement terminal power | -- |
External electromagnetic field interference | Should be avoided | -- |
Work location | The current wire to be tested is in the center of the jaws | -- |
Waveform of measured signal | Sine wave (distortion factor β) see note 1 | β=0.01 |
Frequency of measured signal | 50 Hz | ±2 Hz |
The amplitude range of the measured signal during phase frequency measurement |
Voltage: 100V±25V Current: 5A±0.2A |
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2. Basic error limit
Voltage measure range | 30V~ 480V |
5A terminal |
Active energy/ power |
±0.05% ±0.1% |
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Voltage error |
±0.05% ±0.1% |
Reactive energy power |
±0.1% ±0.2% |
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Current range (Overload 1 times) |
Terminal | 0.1~5A wide measure range | current | ±0.05% | ||
5A clamp meter |
Active energy power | ±0.2% | ||||
Clamp | 5A 100A 500A 1000A | Reactive energy power | ±0.5% | |||
Current | ±0.2% | |||||
Input frequency range | 45 ~ 55Hz | Over-load | 200% | |||
Frequency measure error | ±0.01Hz | Active energy power |
±0.2% ±0.5% |
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Phase measure range | 0° ~ 360° | Large current clamp | Reactive energy power | ±0.5% | ||
Maximum phase error | ±0.05° | Current | ±0.5% | |||
Harmonic wave measure range | 2~21 times | Ratio test | ±0.5% | |||
Pulse constant | 5A | 1.8×107P/kWh | Others | Voltage influence | < ±0.01% | |
100A | 1.8×106P/kWh | Frequency influence | < ±0.01% | |||
500A | 1.8×105P/kWh | Temperature influence | < ±PPM5℃ | |||
1000A | 1.8×1057P/kWh | Deviation in 24hours | < ±0.02% | |||
3. Safety features
(1) Withstand voltage: the voltage and current input terminal the AC charging power input terminal and the instrument casing the clamp current transformer core and the lead wire and the clamp handle can withstand 1kV/50Hz sine wave AC voltage test for 1 minute.
(2) Insulation resistance: the insulation resistance between the test points mentioned above is greater than the measuring voltage of 100MΩ/1000V.
4. External dimensions and weight of the instrument
Host (including battery): 270×200×78mm weight: 2.15Kg
5A clamp-type current transformer: 160×45×25mm weight: 0.24Kg/piece
Whole machine size (including accessories): 423×336×126mm weight: 5.6 Kg/set
Packing size (including shockproof pad): 470×380×240mm weight: 7.0Kg/set
5. Conditions of use
Working environment: temperature: -15℃-+40℃ humidity: ≤ 90%RH
Storage environment: temperature: -30℃-+60℃ humidity: ≤ 95%RH
Altitude: <1500 meters
External electromagnetic field interference: should be avoided
6. Power supply
AC PT measuring terminal power supply: AC80V-480V power consumption 7.5VA
AC adapter power supply: AC220V/DC12V
DC lithium battery power supply: 7600mAh charging time> 8 hours charging times> 500 times.
7. Choice of clamp meter
SN | Name | Measurement range | Dimensions | Hollow inner hole |
1 | 50A current clamp | 5A - 100A | 172×55×28mm | Ф14mm |
2 | 100A current clamp | 10A - 200A | 172×55×28mm | Ф20mm |
3 | 500A current clamp | 50A - 500A | 216×101×28mm | Ф50mm |
4 | 1000A current clamp | 100A - 1000A | 270×115×36mm | 52mmx80mm |
5 | 2000A current clamp | 200A - 2000A | 313×115×36mm | 52mmx125mm |