YLJS-7062 Automatic Anti Interference Dielectric Loss Tester with Different Frequency-Global supplier

No. 1155 Caotan 10th Road, Weiyang District, Xi'an City, Shaanxi Province, China (Zhichao Innovation Space)

▍ brief 　↴

YLJS-7062Automatic anti-interference for different frequenciesDielectric loss testerIt is a high-precision testing instrument specially developed and designed by Shaanxi Yilian Electric in accordance with relevant national regulations and user needs, for testing the dielectric loss tangent and capacitance of various high-voltage power equipment on site or in laboratories such as power plants and substations.

介质损耗测试仪

YLJS-7062 frequency differenceFully automatic dielectric loss testerFor an integrated structure, it is equipped with a built-in dielectric loss testing bridge, variable frequency voltage regulating power supply, step-up transformer, and SF6 high stability standard capacitor. The high-voltage source for testing is generated by the inverter inside the instrument, and after being boosted by a transformer, it is used for testing the test object. The frequency can be changed to 45Hz or 55Hz, 55Hz or 65Hz, and digital notch technology is used to avoid the interference of power frequency electric fields on the test,anti-interferenceDielectric loss testerFundamentally solving the problem of accurate measurement under strong electric field interference. fully automaticDielectric loss testerIt is also applicable to situations where a generator is used for power supply testing after a complete power outage.

▍ Product Features 　↴

→ Large LCD Chinese display: Equipped with a large Chinese menu interface, the screen display is divided into left and right parts. The left side is the functional menu area, and the right side is the relevant status information prompt. The operation prompt is clear, and the operator does not need professional training. In one operation, the microcomputer automatically completes the entire measurement process, which is simple and convenient.

→ Multiple testing modes: capable of testing using various methods such as internal high voltage, external high voltage, internal standard, external standard, positive connection method, reverse connection method, self-excited method, etc; High voltage (greater than 10kV) dielectric loss tests can be conducted under high voltage conditions outside of external standards.

→ One step CVT testing: It can test the dielectric loss and capacitance of fully sealed CVT (capacitive voltage transformer) C1 and C2, achieving simultaneous testing of C1 and C2. It can also test the CVT ratio and voltage angle difference.

→ Measurement of CVT without dismantling the high-voltage lead: The dielectric loss and capacitance values of the CVT can be accurately measured without dismantling the high-voltage lead of the CVT.

→ CVT reverse shielding method for measuring C0: The reverse shielding method can be used to measure the dielectric loss and capacitance values of C0 at the upper end of the CVT.

→ High speed sampling signal: The internal inverter and sampling circuit are all digitally controlled, and the output voltage is continuously adjustable.

→ Multiple protection, safety and reliability: It has multiple protection measures such as input voltage fluctuation, output short circuit, overvoltage, overcurrent, temperature, etc., ensuring the safety and reliability of the instrument. It also has grounding detection function to ensure that ungrounded equipment is not allowed to increase voltage.

→ Massive storage of data: Equipped with a calendar chip and large capacity storage, it can save detection results in chronological order, view historical records at any time, and print and output them;

→ Scientifically advanced data management: Instrument data can be exported through a USB flash drive, and can be viewed and managed on any PC using our company's dedicated software to generate work reports.

▍ test function 　↴

straight polarity	have
Reverse connection method	have
CVTaesops	have
Simultaneous measurementC1andC2	have
CVTVariable ratio test	have
External high voltage test	have
External standard testing	have

▍ Technical Parameter 　↴

Conditions of Use	-15℃~40℃		RH＜80%
Anti interference principle	frequency-changing method
power supply	AC220V±10%		Allow generator
High voltage output	0.5KV~10KV		every other0.1kV
	accuracy		2%
	Zui high current		200mA
	capacity		1500VA
Self-excited power supply	AC0V~50V/15A		45HZ/55HZ；55HZ/65HZ
resolution	tgδ:0.001%		Cx:0.01pF
accuracy	△tgδ:±(reading*1.0%+0.040%)
	△Cx:±(reading*1.0%+1.00PF)
measuring range	tgδ	unlimited
	Cx	15pF＜Cx＜300nF		10kV	Cx＜60nF
				5kV	Cx＜150nF
				1kV	Cx＜300nF
	CVTtest	Cx＜300nF
CVTVariable ratio range	10~10000
CVTVariable ratio accuracy	0.1%
CVTVariable resolution ratio	0.01
External dimensions	430mm×330mm×330mm
SIZE	200Group supportUDisk data storage
weight	28kg

▍ Working principle 　↴

　　Principle of dielectric loss tester：Under the action of AC voltage, the dielectric consumes some electrical energy, which will be converted into thermal energy and result in losses. This type of energy loss is called dielectric loss. When an alternating voltage is applied to a dielectric, the voltage and current in the dielectric form a phase angle difference of. The residual angle of. theta. is called the dielectric loss angle, and the tangent of. delta. is called the dielectric loss angle tangent. The TG δ value is a parameter used to measure the dielectric loss. The instrument measurement circuit includes a standard circuit (Cn) and a test circuit (Cx), as shown in Figure 2-1. The standard circuit consists of a built-in high stability standard capacitor and a measurement circuit, while the test circuit consists of the test sample and the measurement circuit. The measurement line consists of a sampling resistor, a preamplifier, and an A/D converter. By measuring the amplitude and phase difference of the standard circuit current and the tested circuit current through the measurement circuit, the capacitance value and dielectric loss tangent value of the test sample are obtained through vector operation using a digital real-time acquisition method by a digital signal processor. The instrument has adopted anti-interference measures internally to ensure accurate measurement under external electric field interference.

介损测试仪原理及接线图

▍ Precautions for use 　↴

1. The automatic dielectric loss tester with different frequencies can only be used on equipment that has been powered off, and other equipment may not be powered off;
2. The instrument comes with a boost device, so attention should be paid to the insulation of the high-voltage leads and personnel safety;
3. The instrument should be reliably grounded;
4. Before using a fully automatic anti-interference dielectric loss tester to test equipment, insulation testing should be performed on the equipment first;
5. Determine the voltage withstand level of the equipment, correctly select the instrument boost gear to prevent breakdown of the equipment and damage to the instrument;
6. The dedicated high-voltage cable equipped with the dielectric loss tester has passed the factory inspection, but it still needs to be kept away from the human body during measurement;
7. The input voltage is AC220V ± 10%, and exceeding the range may affect the testing accuracy; The maximum input voltage is AC264V, exceeding this value will cause long-term damage, and the manufacturer will not provide warranty for this;
8. The printer may experience paper jams during transportation due to loose roll paper. In this case, simply remove the roll paper, wrap it tightly, and reinstall it;
9. Instruments should be protected from moisture and severe vibrations;
10. When supplying power to the generator, the output neutral wire should be grounded, otherwise it will indicate a grounding error.

▍Product Photograph 　↴

介质损耗测试仪图1

介质损耗测试仪图2

介质损耗测试仪图3

Yilian Electric Manufacturer specializes in producing fully automatic anti-interference with different frequenciesDielectric loss testerHigh voltage dielectric loss tester, anti-interference quality loss tester,Rich product selection, manufacturer's prices, free guidance on usage, professional electrical testing for 10 years, looking for fully automatic dielectric loss testers, high-voltage dielectric loss testers, anti-interference quality loss testers, choosing Yilian Electric to create high-quality electrical testing products.