Uhv-901 All-in-One Current and Voltage Transformer on-Site Calibrator

Product Description

Product overview
This instrument can measure the ratio and angle difference of current and voltage transformers according to national standards, and can also measure any percentage of ratio and angle difference between 1% and 200% of current; It can directly measure the transformation ratio and polarity of the transformer, etc. The instrument adopts high-precision, automatic linear adjustment DC and AC power supply; High speed and high reliability digital processing module; The high measurement accuracy and high stability of the pre measurement circuit ensure the accuracy and high stability of the instrument measurement. In addition, the instrument adopts WINCE system, 800 * 600 large LCD full English interface platform technology, user-friendly color touch screen operation, with a user-friendly human-machine interface, prompts for wiring and operation, and has any measurement parameter saving function. The machine interface is intuitive and convenient.

Products features
1,The integrated on-site tester for current and voltage transformers adopts the principle of small signal measurement. A single instrument can complete the error testing of current and voltage transformers, greatly facilitating on-site calibration of measuring devices.
2,On site verification of current and voltage transformers does not require standard current transformers, standard voltage transformers, current boosters, voltage boosters, current and voltage load boxes, voltage regulation control boxes, or high current wires. The verification of current transformers is achieved through extremely simple testing wiring and operation, greatly reducing work intensity and improving work efficiency.
3,The integrated current and voltage transformer on-site tester has a standard voltage transformer equivalent to the measured current transformer with the same transformation ratio inside, with an accuracy of 0.02 level, equivalent to a 0.05S level current transformer, accurately measuring the measured current, voltage transformer transformation ratio, and no-load error. Then calculate the error of the transformer by combining the test results of impedance and admittance.
4,Using a power supply close to the power frequency for testing, to prevent on-site power frequency electromagnetic radiation and series interference.
5,The measurement range is wide, and it can measure both standard and non-standard current transformers.
6,The accuracy of the transformer calibrator attached to the instrument can be verified using a transformer calibration device.
7,Directly integrate on-site data and determine whether it is qualified or unqualified
8,Measure the standard variable ratio current transformer and measure the standard variable ratio current transformer with a specification point error (angle difference, ratio difference) of 1% -120% (S-level).
9,Measure any point error (angle difference, ratio difference) of 1% -200% (S-level) between standard and non-standard ratio current transformers.
10,Measure and display the standard points and any point errors (angle difference, ratio difference) of the current transformer under the upper and lower limit loads.
11,One measurement and display of the actual regulation point and error (angle difference, ratio difference) of the current transformer under any load.
12,Detect the polarity and transformation ratio of known and unknown current transformers, and be able to determine the actual current ratio of unknown current transformers. It can also vaguely determine whether the secondary current of unknown current transformers is 5A or 1A.
13,Meet the requirements of 20% -120% standard point error (angle difference, ratio difference) detection for measuring voltage transformers in accordance with national regulations.
14,Complete the measurement in one go and display (according to the regulations) the standard point error (angle difference, ratio difference) of the voltage transformer under the upper and lower limit loads.
15,Complete the measurement and display the standard point error (angle difference, ratio difference) of two sets of voltage transformers under any actual load in one go.
16,Detect the transformation ratio and polarity of the voltage transformer.
17,It has intelligent judgment of external wiring status, indicating wiring errors, transformation ratios, polarity errors, etc. Automatically round the test data and determine if it exceeds the tolerance.
18,800 * 600 large screen LCD display, fully Chinese interface. Easy wiring and operation, convenient to carry.
19,Various measurement data can be stored on-site for convenient user queries.
20,The instrument is conveniently connected to a computer through a standard USB interface to transfer data, and the backend management software processes reports and prints certificates according to national standards.
21,The chassis should be made of shockproof and pressure resistant materials to ensure the safety of on-site operators and equipment.
22,The overall weight of the machine is less than 6.0Kg, and the overall volume is 472mm × 355mm × 168mm. The small volume and light weight make it truly easy to carry.

Product Parameter

(1)

CT ratio range	5A/5A~25000A/5A (5A/1A~5000A/1A) turn ratio error ± 0.2%
Error measurement range	5A/5A~5000A/5A(5A/1A~5000A/1A)
Accuracy range of the tested current transformer	1.0, 0.5, 0.5S, 0.2, and 0.2S
CT error accuracy	0.02 level

(2)

PT ratio range	Full range measurement (electromagnetic type) ± 0.2%
Error measurement range	Primary voltage:3-220kV/(non-standard primary voltage is also acceptable) Secondary voltage: 3kV/100V,3kV//100V/;6kV/100V,6kV//100V/;6.3kV/100V, 6.3kV//100v/;10kV/100V,10kV//100V/;10.5kV/100V,10.5kV//100V/;13.8kV/100V,13.8kV//100V/;15kV/100V,15kV//100v/;15.75kV/100V ,15.75kV//100V/;18kV/100V,18kV//100V/ ;20kV/100v, 20kV//100v/;35kV/100V,35kV//100V/;66kV//100v/; 110kV//100V/;220kV//100V/
Power factor	0.0-1.0
PT error accuracy	0.05 level
DC resistance	0.0-0.1 Ω ± 3%
	0.1-50Ω ±1%
Environmental temperature	0-40ºC
Power consumption of the whole machine	30W (static) and 150W (working)
Environmental temperature	0-40ºC
Environmental humidity	<85% at 25ºC
Whole machine weight	6.0Kg
Whole machine volume	472mm × 355mm × 168mm