INTRODUCTION
Click to download: MEWOI5700 User Manual
Click to download: MEWOI5700 Color Page
The MEWOI5700 Three Phase Digital Phase Volt-Ampere Meter is a well-developed full-automatic, multi-functional, digital, intelligent meter specifically designed for field testing,featuring high accuracy, high stability, low power consumption, easiness to use and so on. It can directly measure AC voltage and AC current without opening the measured circuit, phases between three voltages, three currents and phase between the voltage and current; in addition, the power factor and power of the circuit can be indirectly measured, it can also be used to distinguish three-phase sequence, transformer wiring group, inductive and capacitive circuits, test second circuit and bus differential protection systems, read the phase relationship between CTs of the differential protection, check the meter wiring right, repair lines and equipment, etc. The MEWOI5700 Three Phase Digital Phase Volt-Ampere Meter has well designed shell mould made of newest material, attach with shakeproof, skidproof, high insulation sheath, has a 240dots×160dots LCD screen, all the test data display on the screen simultaneously, vector diagram indication, and looks exquisite and comfortable. Meter equipped with USB-RS232 interface, can store 1500 sets of data, through the system software upload stored data to the computer, implementing online real-time monitoring and historical inquires, dynamic display. Can read, save, report, print history data, etc. The MEWOI5700 Three Phase Digital Phase Volt-Ampere Meter (Intelligent Three Phase Digital Phase Volt-Ampere Meter) applies to electric power, petroleum chemical industry, metallurgy, railway, and meteorology, industrial and mining enterprises, scientific research institutions, measurement sector and so on. Especially for the electricity billing system and relay protection system. |
TECHNICAL SPECIFICTION
1．Base Conditions and Working Conditions
Influence Quantity | Base Condition | Working Condition | Remark |
Ambient Temperature | 23℃±1℃ | -10℃～40℃ | ---- |
Ambient Humidity | 40%～60% | ＜80% | ---- |
Signal Waveform | sine wave | sine wave | β=0.01 |
Signal Frequency | 50HZ±1HZ | 45HZ～65HZ | ---- |
Meter Working Volt | 9V±0.1V | 9V±1.5V | ---- |
Current Amplitude in Phase/Frequency/Phase SequenceTest | 1A±0.2A | 2mA～20A | ---- |
Voltage Amplitude in Phase / Frequency/ Phase Sequence Test | 100V±20V | 10V～600V | ---- |
Current Amplitude in Power / Power Factor Test | 1A±0.1A | 0.1A～400A | ---- |
Voltage Amplitude in Power / Power Factor Test | 200V±2V | 30V～600V | ---- |
External ElectricMagnetic Field | To be avoided | ||
Measured Wire Position | Measured wire at approximately the geometric center of the clamp | ||
2．Intrinsic Error and Performance Indicators under Base Conditions
Category | Measurement Range | Resolution | Intrinsic Error |
Voltage | AC 0.0V～600V | 0.01V | ±(1.5%rdg+5dgt) |
Current | AC 0mA～400A | 1mA | ±(1.5%rdg+5dgt) |
Phase | 0.0°～360° | 0.1° | ±3° |
Active Power | 0.0W～240kW | 0.1W | ±(3%rdg+5dgt) |
Reactive Power | 0.0VAR～240kVAR | 0.1VAR | ±(3%rdg+5dgt) |
Apparent Power | 0.0VA～240kVA | 0.1VA | ±(3%rdg+5dgt) |
Frequency | 45HZ～65HZ | 0.01HZ | ±(2%rdg+5dgt) |
Power Factor | -1～+1 | 0.001 | ±0.03 |
APPLICAITON
SELECTION GUIDE
Digital Phase Volt-AMP Meter
Click "Blue"Marked model number to view the Detailed Specification
| Model | Range | Resolution | Clamp Quantity&Size | RS232 | Data Storage |
MEWOI5000B | AC：0.00 V～600V (automatic shift),AC：0.0mA～20.0A (automatic shift),Phase：0～360°,Active Power：0.0W～12kW | AC 0.01V,AC 0.1mA,Phase：0.1° | 2pc*φ7.5mm | √ | 1500sets |
MEWOI5200B | AC：0.00 V～600V (automatic shift),AC：0.0mA～20.0A (automatic shift),Phase：0～360°,Active Power：0.0W～12kW | AC 0.01V,AC 0.1mA,Phase：0.1° | 2pc*φ40mm | √ | 1500sets |
MEWOI5300 | AC：0.00 V～600V (automatic shift),AC：0.0mA～20.0A (automatic shift),Phase：0～360°,Active Power：0.0W～12kW | AC 0.01V,AC 0.1mA,Phase：0.1° | 3pc*φ7.5mm | √ | 500sets |
MEWOI5700 | AC：0.00 V～600V (automatic shift),AC：0.0A～400A (automatic shift),Phase：0～360°,Active Power：0.0W～240kW | AC 0.01V,AC 0.1A,Phase：0.1° | 3pc*φ40mm | √ | 500sets |
General Specification
Function | Simultaneous measurement of three-phase AC voltage, current, phase between voltage, phase between current, phase between voltage and current, frequency, phase sequence, active power, reactive power, apparent power, power factor, current vector sum, distinguish transformer wiring group, inductive and capacitive circuits, test second circuit and bus differential protection systems, read the phase relationship between CTs of the differential protection, check the meter wiring right, repair lines and equipment, etc. |
Power | DC9V alkaline batteries（1.5V LR6×6） |
Consumption | About 80mA at most with enabled backlight, battery working continuously for about 10 hours |
| About 5mA with disabled backlight, battery working continuously for about 16 hours | |
Display Mode | LCD display, 240dots×160dots |
Meter Size | Length, Width, Height：196mm×92mm×54mm |
Clamp Size | round current clamp:35mm×40mm |
Measurement Range (automatic shift) | AC Voltage：0.00 V～600V (automatic shift) |
| AC Current：0mA～400A (automatic shift) | |
| Phase：0～360° | |
| Frequency：45.00Hz～65.00Hz | |
| Active Power：0W～240kW | |
| Reactive Power：0W～240kVAR | |
| Apparent Power：0W～240kVA | |
| Power Factor：-1～+1 | |
| Current Vector Sum：0A～1200A | |
Resolution | Voltage：AC 0.01V |
| Current：AC 1mA | |
| Phase：0.1° | |
| Frequency：0.01Hz | |
| Active Power：0.1W | |
| Reactive Power：0.1VAR | |
| Apparent Power：0.1VA | |
| Power Factor：0.001 | |
| Current Vector Sum：0.1A | |
Phase Sequence | Positive Phase Sequence：U1、U2、U3 or I1、I2、I3 cursors blink in order from left to right Negative Phase Sequence：U1、U2、U3 or I1、I2、I3 cursors blink in order from right to left |
Sample Rate | About 2 times/second |
Data Hold | Press HOLD key to keep data, "DH" symbol appears |
Data Storage | 500 sets |
RS232 Interface | USB-RS232 interface, download data to computer for analysis and management |
Automatic Shutdown | Automatic shutdown about 15 minutes later after launching to reduce battery consumption |
Backlighting | Suitable for dark place and nightly use |
Voltage Detection | Low battery symbol “ " appears to remind the replacement of battery when the battery voltage drops below 7.2V. |
Weight | Main Unit about 550g（with battery），acuminate current clamp about 170g×3, round current clamp about 185g×3, test line about 250g |
Test Line Length | 1.5m |
Current Clamp Length | 2m×φ5mm |
Working Temperature and Humidity | -10℃～40℃； below 80%Rh |
Storage Temperature and Humidity | -10℃～60℃； below 70%Rh |
Input Impedence | Testing voltage the input impendence is 2MΩ |
Withstand Voltage | Withstand 1000V/50Hz sine wave AC voltage for 1 minute between the meter lines and shell; Withstand 500V/50Hz AC voltage sine wave for 1 minute between the two voltage inputs |
Insulation | ≥100MΩ between meter lines and shell or between the two voltage inputs |
Structure | Double insulation, with insulation vibration-proof sheath |
Safety Specifications | IEC61010-1 CAT Ⅲ 600V, IEC61010-031, IEC61326, 2 class of pollution |
Accessories | Main Unit: 1 pc; Meter Box: 1 piece; Current Clamp: 3 pcs; Test Line: 4 pcs(yellow, green, red, black); RS232 Data Line: 1 pc; Disk: 1 pc; Battery: 6 pcs(LR6); User Manual: 1 pc ;Guarantee: 1 pc; Certification: 1 pc. Card |
Main Unit: 1 pc; Meter Box: 1 piece; Current Clamp: 3 pcs; Test Line: 4 pcs(yellow, green, red, black); RS232 Data Line: 1 pc; Disk: 1 pc; Battery: 6 pcs(LR6); User Manual: 1 pc ;Guarantee: 1 pc; Certification: 1 pc. Card