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INTRODUCTION
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MEWOI1500C(New)Wireless HV Transformation Ratio Tester special designed and manufactured for online measurement of current transducer, transformer primary current and secondary current, transformation ratio, phase and polarity judgment below 35kV in operation. The product is composed of primary current clamp (high voltage detector), secondary current clamp, host machine, high voltage insulation rod, monitoring software, communication cable, etc. the test data of primary current clamp adopt wireless to transmit which transmission distance of 100 meters. The current clamp is made of high performance perm alloy with magnetic shielding technology, which is almost free from the influence of the external magnetic field, ensuring the long time uninterrupted monitoring of high accuracy, high stability and high reliability. The host LCD display clear, with large storage space, can store 3000 groups of data. the high voltage detector connect with 5pcs insulation rod, which can use for high voltage line current measurement of the wire with insulation skin below 60KV or bare wire below 35KV, high voltage current clamp have unique automatic plug and pull structure, by pressing or pulling out the insulation rod can be easy to clamp or withdraw the tested wire, saving time and more effective. It is widely used in substations, power plants, and industrial and mining enterprises, inspection stations, electrical maintenance departments for current detection and electrical field operations. The insulation rod is handiness, and has the characteristics of moisture-proof, high temperature resistance, impact resistance, bending resistance, high insulation, scalable and so on. Insulation level 110KV. The monitoring software has the functions of online real-time monitoring and historical query, dynamic display, maximum, minimum and average indication, alarm value setting and alarm indication, and with historical data reading, accessing, saving, printing and other functions. MEWOI1500C (New) Wireless HV Transformation Ratio Tester, at the same time: High/Low voltage clamp current meter, high altitude current telemeter and other products functions. |
SPECIFICATION
| Function | Measurement for H/L voltage current transducer andtransformer,support primary and secondary circuit current, turn ratio, polarity and phase adjustment functions |
| Power Supply | DC 6VLR03(1.5V AAA×4) |
| Test Mode | Clamp CT |
Primary Current Test Accuracy | Range:0.0A～800A；Resolution：0.1; Accuracy ：±0.5%FS(23℃±3℃， below 70% RH，the conductor should be in the center of the clamp) |
Secondary Current Test Accuracy | Range：0.00mA～5A；Resolution：0.01mA；Accuracy：±0.5%FS |
Transformation Ratio Measurement Range | 1～500 |
| Transformation Ratio Resolution | 0.1 |
| Primary HV Current Clamp Size | Jaw Size: φ48mm Out Shape Size: 76mm×255mm×31mm |
Secondary LV Current Clap Size | Jaw Size: φ8mm Out Shape Size: 137mm×40mm×19.5mm |
| Shift | Automatic shifting |
Sampling Rate | 2 times/second |
| Data Storage | 3000 groups, Press the left arrow key to keep the data and store automatically (Power down or replace the battery will not lose data) |
| Data Hold | Press left arrow key to hold data in test mode, “HOLD” symbol display, press HOLD key again to cancel hold function |
Data Access | Press the right arrow key enter in o data access mode |
Overflow Display | Exceed measure range overflow function: “OL” symbol display |
No Signal Indication | When the receiver has not received transmit signal, dynamic display “no- -”symbol. |
| Auto Shut Down | 15 minutes after boot up, the meter shuts down automatically without any operation |
Battery Voltage | When battery voltage is lower than 5.2V±0.3V, low battery voltage symbol will display and remind to replace battery. |
| Primary Current Clamp Transmission Distance | Wireless transmission distance 100M |
Secondary Current Clamp Connection Cable Length | 2M |
| Display Mode | LCD：128dots×64dots With backlight function, suitable for dark places |
| LCD Size | Display area :44mm×27mm |
| Host Size | 78mm×165mm×42mm |
| Meter Weight | 5 kg (with insulation rod and toolkit ) |
| External Interference | Avoid 315MHz, 433MHz Same-frequency Signal Interference |
| Working Temperature | -10℃~40℃；below 70%rh |
| Store Temperature | -10℃~60℃；below 70%rh |
| Insulation Rod Size | Φ32mm，1m/pcs（5pcs） |
| Insulation Rod withstand voltage | 110kv |
| Insulation Strength | Host and detector：AC1000V/rms(between the shell and screws) |
Application
Selection Guide
| Model | Main Functions | Range | Clamp size | Wireless transmission Max | Transformation ratios | Data storage | Line Voltage |
| Primary/Secondary Loop current,turn ratio,polarity and phase adjustment | High voltage clamp: 0.0A～800A Low voltage clamp: 0.01mA～5A | High voltage clamp: φ48mm Low voltage clamp: φ8mm | 100m | 1:500 | 3000sets | <35KV |
| Primary/Secondary Loop current,turn ratio,phase angle,polarity and phase adjustment | High Voltage Primary:0.0A～800A Flexible Clamp Primary:0.0A～3000A | High voltage clamp: φ48mm Flexible Clamp:φ200mm Low voltage clamp: φ8mm | 100m | 1:500 | 3000sets | <35KV |
SPECIFICATION
Function | High and low voltage first and secondary loop current, variable ratio, polarity, phase difference, current leakage online test; current on both sides of transformer, variable ratio online monitoring |
Power supply | DC6V alkaline dry battery (1.5V AAA×4), continuous working for 30 hours |
Test mode | Clamp CT |
Transmission mode | Wireless transmission, the maximum distance of straight line transmission is about 30m |
Display mode | LCD: 128dots×64dots; blue backlight function |
LCD dimension | Display domain: 44mm×27mm |
Meter dimension | Host: width, height, thickness75mm×170mm×30mm High voltage clamp: width, height, thickness 76mm×255mm×31mm Low voltage clamp: width, height, thickness 63mm×160mm×23mm |
Clamp dimension | High voltage clamp: φ48mm Low voltage clamp: φ30mm |
Sampling rate | About 2 times/second |
Measurement scope | High voltage clamp: 0.1mA～1000A Low voltage clamp: 0.01mA～10A |
Resolution | High voltage clamp: 0.1mA Low voltage clamp: 0.01mA |
Shift | Automatic shift |
One loop testing accuracy 23℃±3℃, below 80%RH | 0.1mA～10.0A: ±1%±3dgt |
10.0A～49.9A: ±1.5%±5dgt | |
50.0A～199.9A: ±2%±5dgt | |
200A～600A: ±3%±5dgt | |
601A～1000A: ±4%±5dgt | |
Secondary loop testing accuracy | 0.01mA～10A: ±1%±3dgt (23℃±3℃, below 70%RH) |
Variable ratio | 3 variable ratio displays: (first and secondary loop real-time current measurement ; calculate the variable ratio at 5A of secondary loop and 10kV-YY of transformer 10kV/380V); the maximum transformation ratio is 1:10 million (1.0K7) |
Data storage | 3000 sets, press key HOLD to maintain data and automatically numbered storage (data won’t lose in power off or battery replacement) |
Line voltage | Below 60KV line test (with 5 insulation rods operation) |
Data retention | Press key HOLD key to maintain data, shown by HOLD , and then press HOLD to cancel maintaining. |
Data access | Enter data access mode by pressing key HOLD+ key POWER |
Overflow display | Over-range overflow function: shown in “OL A” |
No signal indication | “No signal” will be shown when the host fails to receive signal |
Automatic shutdown | 15 minutes after boot, meter automatically shuts down |
Battery voltage | When battery voltage is lower than 4.8V, battery voltage is shown in low symbol to remind battery replacement |
Meter mass | Host: 240 g (with battery) High voltage clamp: 335g (with battery) Low voltage clamp: 170g (optional) the total mass of meter: 2.5kg (including insulation rod and battery) |
External disturbance | No particularly strong electromagnetic field; without 433MHz and 315 MHz interference |
Working temperature and humidity | -25℃～45℃; below 80%Rh |
Storage temperature and humidity | -10℃～60℃; below 70%Rh |
Insulation rod dimension | φ32mm, 1m/piece (5pieces,standard configuration) |
Low voltage current clamp lead | Standard 2m |
Insulation strength | High voltage clamp: AC100kV/rms (between the 5th insulation rod and high voltage current clamp core) Host and low voltage clamp: AC1000V/rms |
Structure | Anti-drip type Ⅱ (high voltage detector) |
Accessories | Clamp: 1 piece; receiver: 1 piece; current clamp: 1 piece; disc: 1 piece; RS232 communication wire: 1 piece; meter box: 1 piece; insulation rod (1m): 5 pieces; battery (alkaline battery AAA): 8 pieces |
Clamp: 1 piece; receiver: 1 piece; current clamp: 1 piece; disc: 1 piece; RS232 communication wire: 1 piece; meter box: 1 piece; insulation rod (1m): 5 pieces; battery (alkaline battery AAA): 8 pieces