Three-phase Intelligent Phase Voltammeter
General Information:
EP8410B The three-phase intelligent phase voltammeter is a multifunctional intelligent instrument designed for on-site testing. It consists of a host, current clamps (3), and test lines (4). The host uses a 3.5-inch true color LCD screen, graphical menu interface display, vector diagram instructions. The design of the small clamp head of the current clampis easy to operate, and it is very suitable for places with dense wiring. The instrument can measure three-phase AC voltage, current, phase between voltages,phase between currents, phase between voltage and current, frequency, phase sequence, active power, reactive power, apparent power, without opening the circuit under test. Power factor, current vector sum, identify the transformer wiring group, inductive, capacitive circuit, test the secondary circuit and bus differential protection system, read out the phase relationship between the CTs of the differential protection groups, check the correct connection of themeter Otherwise, the maintenance of line equipment, etc., provides a safe,accurate and convenient smart instrument for the electricity inspectors. It issuitable for electric power, petro chemical industry, metallurgy, railway,meteorology, industrial and mining enterprises, scientific research institutions, metrology departments, etc. Especially suitable for electric energy billing system and relay protection system.
TechnicalSpecifications:
1. Baseline conditions and working conditions
| Item | Baseline conditions | Working conditions | Remark |
| Ambient temperature | 23℃±1℃ | -10℃～40℃ | / |
| Ambient humidity | 40%～60% | | / |
| Signal waveform | Sine wave | Sine wave | β=0.01 |
| Signal frequency | 50HZ±1Hz | 45Hz～65Hz | / |
| Working voltage | 7.4V±0.5V | 7.4V±1V | / |
| Current amplitude when measuring phase frequency phase sequence | 1A±0.1A | 1mA～30A | Check general specifications for details |
| Voltage amplitude when measuring phase frequency phase sequence | 100V±10V | 1V～600V | / |
| Current amplitude when measuring power factor | 1A±0.1A | 10mA～30A | / |
| Voltage amplitude when measuring power factor | 100V±10V | 10V～600V | / |
| External electric field, magnetic field | Should be avoided | ||
| The position of the test wire under test | The tested wire is at the approximate geometric center of the clamps | ||
2. General specifications
| Function | Simultaneously test the current, voltage, phase, frequency, phase sequence, active power, reactive power, apparent power, power factor, current vector sum in the three-phase 380V / 220V power system to determine the transformer wiring group, inductive, capacitive Circuit, test the secondary circuit and bus differential protection system, read out the phase relationship between the CTs of the differential protection groups, check the correctness of the wiring of the watt-hour meter, repair the line equipment, etc. |
| Power | DC 7.4V large-capacity rechargeable lithium battery, USB charging interface, continuous working for about 10 hours when fully charged. |
| Rated current | About 180mA Max |
| Display mode | 3.5 inch true color LCD display |
| Meter size | LWH：196mm×92mm×54mm |
| Clamp size | φ7.5mm×13mm |
| Sampling rate | About 3 times / sec |
| Measuring range | AC voltage: 0.00V ～ 600V |
| AC current: 0.0mA ～ 30A | |
| Phase：0.0°～360.0° | |
| Frequency：45.00Hz～65.00Hz | |
| Active power：0.0W～12kW | |
| Reactive power | |
| Apparent power | |
| Power factor | |
| Current vector sum | |
| Resolution | Voltage：AC 0.01V |
| Current：AC 0.1mA | |
| Phase：0.1° | |
| Frequency：0.01Hz | |
| Active power | |
| Reactive power | |
| Apparent power | |
| Power factor | |
| Current vector sum |
| Precision （Under baseline conditions） | Voltage：±(0.5% measuring range) |
| Current：±(0.5% measuring range) | |
| Phase: ± 1 ° (Phase error under working conditions: ± 3 ° from 10mA to 30A; ± 5 ° below 10mA. When the current value is less than 5mA, in order to ensure that the current is accurately measured on the current phase, do not perform voltage measurement In the phase test of voltage to current, in order to ensure the accuracy of the measurement, the voltage needs to be not less than 5V and the current is not less than 5mA) | |
| 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 | Normal phase: U1, U2, U3 or I1, I2, I3 cursor flashes sequentially from left to right |
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