HV CT Ratio Tester

HTCT-201 HV CT Ratio Tester

Specially designed and manufactured for on-line measurement of primary current and secondary current of current transformers and transformers below 35kV, variable ratio, phase difference and polarity judgment

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Product Introduction

Htct-201 high voltage CT conversion ratio tester breaks through the traditional structure and is specially designed and manufactured for online measurement of primary current and secondary current size, conversion ratio, phase difference and polarity judgment of current transformers and transformers below 35kV.The product is composed of primary current clamp (high voltage detector), secondary current clamp, main machine, high voltage insulating rod, monitoring software, communication line, etc. The primary current clamp adopts wireless transmission of test data with a transmission distance of 100 meters.

The main current clamp is made of high performance permalloy alloy with magnetic shielding technology, which is almost unaffected by external magnetic field, ensuring high precision, high stability and high reliability of year-round uninterrupted monitoring.

Host LCD display at a glance, at the same time with large storage space, can store 3000 groups of data.

High voltage detector connected section 5 insulating rod and can be used for under 60 kv with insulating sheath line or below 35 kv bare wire high and low voltage circuit current measurement, high voltage current clamp has a unique automatic insertion structure, through a push or pull back insulation lever can be traverse, convenient clamps or evacuation time quick, widely used in the substation, power plants, the auditing departments of electric power, industrial and mining enterprises as well as the testing station, electrical maintenance department current detection, the power and the wild electrician operations, etc.The insulating pole is light, with the characteristics of moisture proof, high temperature resistance, impact resistance, bending resistance, high insulation, the insulation grade is 110kV.

The monitoring software has the functions of online real-time monitoring and historical query, dynamic display, maximum, minimum and average value indication, alarm value setting and alarm indication, historical data reading, consulting, saving, printing and other functions.

The product names:CT ratio changing polarity on-line detector, high voltage transformer ratio tester, high voltage CT ratio tester, wireless high voltage and low voltage current transformer ratio tester, high voltage and low voltage transformer ratio tester, live measurement high voltage CT ratio changing tester, high voltage CT ratio changing tester, CT ratio changing tester

Product parametersProduct Parameters

Technical specifications

Amount of influence Benchmark conditions The working conditions
The environment temperature 23℃±5℃ -15℃~50℃
Environmental humidity 40%~60% <70%
Sine wave distortion ≤1% ≤3%
Signal frequencyc 50Hz±5Hz 45Hz~65Hz
External electric field, magnetic field Should be avoided
Position of wire under test The wire under test is in the center of the clamp

Technical parameters


High and low voltage current transformer, transformer secondary circuit current, variable ratio test,

polarity, phase judgment

The power supply The DC6V alkaline dry battery LR03(1.5v AAA×4) worked continuously for 30 hours
The test way Clip-on CT
Primary current measurement accuracy range:0.0A~800A;The resolution of the:0.1A;precision:±0.5%FS
Accuracy of secondary current test range:0.00mA~5A;The resolution of the:0.01mA;precision:±0.5%FS
Variable ratio measurement range 1~500
Variable ratio resolution 0.1
Primary current clamp size Jaw size:φ48mm;Overall dimensions:76mm×255mm×31mm
Secondary current clamp size Jaw size:φ8mm;Overall dimensions:137mm×40mm×19.5mm
shift Full automatic shift
Sampling rate 3 times per second
Data is stored

3000 sets, press the left arrow key to keep the data and store it automatically (the data will not be lost if the

power is lost or the battery is changed)

Keeping data

Press the left arrow key to HOLD the data, the HOLD symbol is displayed, and then press

the HOLD key to cancel the HOLD

Figures refer to Press the right arrow key to enter data lookup mode
Overflow shows Overrange overflow function: "OL" symbol display
No signal indication "No signal" is indicated when the host machine does not receive the transmission signal.
Automatic shutdown After about 15 minutes, the meter will shut down automatically
The battery voltage When the battery voltage is lower than 4.8v,“”Display, remind to replace the battery
Primary current clamp transmission distance The wireless transmission distance is 100M

The connection line of the secondary

current clamp is long

Display mode LCD:128dots×64dots;Backlight function, suitable for dark places
The LCD size According to the domain:44mm×27mm
Size of the host 78mm×165mm×42mm
Instrument quality 5kg(including kit and insulating rod)
Outside interference Avoid extremely strong electromagnetic fields;Avoid 433MHz, 315MHz interference with the same frequency
Operating temperature and humidity -15℃~50℃;70%Rh The following
Storage temperature and humidity -10℃~60℃;70%Rh The following
Size of insulating rod φ32mm,1 m/day, 5 day
Insulated rod withstands pressure 110kV
Dielectric strength Host and detector: AC1000V/ RMS (between shell and screw)

1.The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice.In case of misappropriation or copying, legal liability will be investigated.

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Product Characteristics

Product Picture

Product accessory drawing

Product detail drawing

Product Certificate

Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.

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