MEWOI1500 Wireless High Voltage Current Transformation Ratio Tester breaks traditional structure, specially designed for high and low voltage first and secondary loop current, variable ratio,  and current leakage test; apply the latest CT technology and mask digital integration technology, composed of special high-voltage clamp, low voltage clamp, host, high voltage insulation rod and monitoring software, etc; its wireless transmission test data can penetrate multiple building obstacles with a straight-line distance of 30 meters.

With monitoring software, the meter has online real-time monitoring and historical query function, with dynamic display, wave direction, variable ratio, frequency indication, with maximum, minimum, mean value indication; alarm setting and alarm indication functions, functions of historical data reading, access, saving, analysis, processing, sorting, fitting curve, report and printing.

High-voltage detector connected rod can be used in the measurement of high voltage line current, currents on both sides of transformer, variable ratio test, online current monitoring below 60KV; The special clamp ammeter can facilitate clamp to exit the tested lead by pressing or pulling back insulation bar, which is time efficient and convenient; widely used in power plant, substation, industrial and mining enterprise, inspection station, electrician maintenance department for current sensing, power audit and field working.

Function

High and low voltage first and secondary loop current, variable ratio, 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

 2 times/second

Measurement scope

High voltage clamp: 0.0mA～1000A,  Low voltage clamp: 0.00mA～10A

Resolution

High voltage clamp: 0.1mA,  Low voltage clamp: 0.01mA

Shift

Automatic shift

One loop testing accuracy

23℃±3℃, below 80%RH

0.0mA～10.0A:       ±1%±5dgt 

10.0A～49.9A:        ±2%±5dgt 

50.0A～199.9A:      ±3%±5dgt

200A～600A:          ±4%±5dgt   

601A～1000A:        ±5%±5dgt  

Secondary loop testing accuracy

0.00mA～10A:        ±1%±5dgt  (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)

Safety Provisions

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

High voltage clamp: 0.1mA～1000A

 Low voltage clamp: 0.01mA～10A

High voltage clamp: φ48mm

 Low voltage clamp: φ30mm