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The Three-phase Intelligent Phase Volt-Ampere Meter is a multi-functional smart instrument specifically designed for on-site testing. It consists of a main unit, three current clamps, and four test leads. The main unit features a 3.5-inch true color LCD screen with graphical menu interface and vector diagram indication, providing clear visibility. The integrated handle design of the current clamps facilitates operation, making it highly suitable for places with dense wiring.
This instrument can measure various parameters without breaking the circuit, including three-phase AC voltage, current, phase angles between voltages, phase angles between currents, phase angles between voltage and current, frequency, phase sequence, active power, reactive power, apparent power, power factor, and current vector sum. It can also determine the connection group of transformers, identify inductive and capacitive circuits, test secondary circuits and bus differential protection systems, read the phase relationships between different CT groups in differential protection, check the correctness of electricity meter connections, and inspect and maintain line equipment. This provides electrical inspection personnel with a safe, accurate, and convenient smart meter.
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The Three-phase Intelligent Phase Volt-Ampere Meter is a multi-functional smart instrument specifically designed for on-site testing. It consists of a main unit, three current clamps, and four test leads. The main unit features a 3.5-inch true color LCD screen with graphical menu interface and vector diagram indication, providing clear visibility. The integrated handle design of the current clamps facilitates operation, making it highly suitable for places with dense wiring.
This instrument can measure various parameters without breaking the circuit, including three-phase AC voltage, current, phase angles between voltages, phase angles between currents, phase angles between voltage and current, frequency, phase sequence, active power, reactive power, apparent power, power factor, and current vector sum. It can also determine the connection group of transformers, identify inductive and capacitive circuits, test secondary circuits and bus differential protection systems, read the phase relationships between different CT groups in differential protection, check the correctness of electricity meter connections, and inspect and maintain line equipment. This provides electrical inspection personnel with a safe, accurate, and convenient smart meter.
Suitable for applications in power, petrochemicals, metallurgy, railways, meteorology, industrial enterprises, research institutions, and metrology departments, this instrument is especially applicable to electric energy billing systems and relay protection systems.
Simultaneously tests current, voltage, phase, frequency, phase sequence, active power, reactive power, apparent power, power factor, and current vector sum in three-phase 380V/220V power systems. It also determines the connection group of transformers, identifies inductive and capacitive circuits, tests secondary circuits and bus differential protection systems, reads the phase relationships between different CT groups in differential protection, checks the correctness of electricity meter connections, and inspects and maintains line equipment.
Reference Conditions and Operating Conditions
| Influencing Factor | Reference Conditions | Operating Conditions | Remarks |
|---|---|---|---|
| Ambient Temperature | 23°C ± 1°C | -10°C ~ 40°C | / |
| Ambient Humidity | 40% ~ 60% | <80% | / |
| Signal Waveform | Sine wave | Sine wave | β = 0.01 |
| Signal Frequency | 50 Hz ± 1 Hz | 45 Hz ~ 65 Hz | / |
| Instrument Operating Voltage | 8.4 V ± 0.5 V | 8.4 V ± 0.5 V | / |
| Current Amplitude for Phase/Frequency/Phase Sequence Measurement | 1 A ± 0.1 A | 2 mA ~ 20 A | / |
| Voltage Amplitude for Phase/Frequency/Phase Sequence Measurement | 100 V ± 10 V | 10 V ~ 600 V | / |
| Current Amplitude for Power/Power Factor Measurement | 1 A ± 0.1 A | 20 mA ~ 20 A | / |
| Voltage Amplitude for Power/Power Factor Measurement | 100 V ± 10 V | 10 V ~ 600 V | / |
| External Electric/Magnetic Fields | Should be avoided | ||
| Position of Conductor Under Test | Conductor should be positioned approximately at the geometric center of the clamp jaw | ||
General Specifications
| Function | Simultaneously measures current, voltage, phase angle, frequency, phase sequence, active power, reactive power, apparent power, power factor, and vector sum of currents in three-phase 380V/220V power systems.Capable of identifying transformer winding connections, distinguishing inductive/capacitive circuits, testing secondary circuits and busbar differential protection systems, determining phase relationships between CT groups in differential protection, verifying correctness of electricity meter wiring, and troubleshooting electrical installations. |
|---|---|
| Power Supply | DC 8.4 V high-capacity rechargeable lithium battery with USB charging port; supports approx. 10 hours of continuous operation after full charge |
| Rated Current | Approx. 180 mA max |
| Display Mode | 3.5-inch true-color LCD screen |
| Instrument Dimensions | L × W × H: 196 mm × 92 mm × 54 mm |
| Clamp Jaw Size | φ7.5 mm × 13 mm |
| Sampling Rate | Approx. 3 samples per second |
| Measurement Ranges | AC Voltage: 0.00 V ~ 600 V |
| AC Current: 0.0 mA ~ 20 A | |
| Phase Angle: 0.0° ~ 360.0° | |
| Frequency: 45.00 Hz ~ 65.00 Hz | |
| Active Power: 0.0 W ~ 12 kW | |
| Reactive Power: 0.0 VAR ~ 12 kVAR | |
| Apparent Power: 0.0 VA ~ 12 kVA | |
| Power Factor: -1 ~ +1 | |
| Vector Sum of Currents: 0 mA ~ 60 A | |
| Resolution | Voltage: AC 0.01 V |
| Current: AC 0.1 mA | |
| Phase Angle: 0.1° | |
| Frequency: 0.01 Hz | |
| Active Power: 0.1 W | |
| Reactive Power: 0.1 VAR | |
| Apparent Power: 0.1 VA | |
| Power Factor: 0.001 | |
| Vector Sum of Currents: 1 mA | |
| Accuracy (under reference conditions) | Voltage: ±(0.5% of range) |
| Current: ±(0.5% of range) | |
| Phase Angle: ±1° (Under operating conditions: ±3° for 10 mA–20 A; ±6° below 10 mA) | |
| Active Power: ±(1.0% of range) | |
| Reactive Power: ±(1.0% of range) | |
| Apparent Power: ±(1.0% of range) | |
| Frequency: ±(1.0% of range) | |
| Power Factor: ±0.03 | |
| Phase Sequence Indication | Positive sequence: U1, U2, U3 or I1, I2, I3 cursors flash sequentially from left to right |
| Negative sequence: U1, U2, U3 or I1, I2, I3 cursors flash sequentially from right to left | |
| Measurement Cycle Time | Approx. 2 seconds per measurement |
| Data Hold | Press HOLD during measurement to freeze data; "HD" symbol appears |
| Data Storage | 99 sets |
| Charging Port | USB charging interface |
| Auto Power-Off | Instrument automatically powers off after approx. 15 minutes of inactivity to conserve battery |
| Backlight | Yes, adjustable brightness |
| Battery Low Indicator | Battery low symbol appears when voltage drops below 6.5 V, indicating need for charging |
| Weight | Main unit: 350 g (with battery) |
| Current clamps: 170 g × 3 | |
| Total weight: approx. 1.35 kg | |
| Test Lead Length | 1.5 m |
| Clamp Cable Length | 2 m |
| Operating Temperature & Humidity | -10°C ~ 40°C; ≤80% RH |
| Storage Temperature & Humidity | -10°C ~ 60°C; ≤70% RH |
| Input Impedance | Voltage input impedance: 1 MΩ |
| Withstand Voltage | Instrument circuitry withstands 1000 V AC (50 Hz sine wave) between circuit and enclosure for 1 minute |
| Insulation Resistance | ≥100 MΩ between internal circuitry and protective housing |
| Construction | Double insulation with insulated shock-absorbing protective cover |
| Safety Compliance | IEC61010-1 CAT III 600 V, IEC61010-031, IEC61326, Pollution Degree 2 |
