Petroleum Oil Dielectric Tester

Introduction

A petroleum oil dielectric tester is an instrument used to measure the dielectric strength of the insulating oils, such as the transformer oils and the switchgear oils, and it is used in the power, the petroleum, and the quality control industries. The dielectric strength is the maximum electric field that the oil can withstand without the breakdown, and it indicates the insulating quality of the oil, and the petroleum oil dielectric tester measures the dielectric strength by the application of the increasing voltage to the electrodes immersed in the oil sample until the breakdown occurs, following the standard test methods, such as the IEC and the ASTM standards; the petroleum oil dielectric tester consists of a high-voltage source, the test cell with the electrodes, a voltage measurement system, and the controls, and it provides the breakdown voltage, with features such as the automatic voltage ramping and the safety; the petroleum oil dielectric tester is used for the testing of the dielectric strength of the transformer oils, the switchgear oils, and the other insulating oils, for the quality control, for the monitoring of the oil condition, and for many other applications, and it is an essential instrument for the electrical testing. Petroleum oil dielectric testers are used in the power industry, in the petroleum industry, in the laboratories, in the maintenance, and for many other applications. With their dielectric measurement, petroleum oil dielectric testers are essential for the insulating oil testing.

Oil Dielectric Tester T-S210ODT

Oil dielectric tester is a portable and automated unit. Enclosed chamber with over voltage and over current function ensures operator safety. Microprocessor based control system makes it ...

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Standards

IEC 60156:2018-Insulating liquids-Determination of the breakdown voltage at power frequency-Test method

ASTM D877-Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes

ASTM D1816-Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes

Complies with the above standards, but is not limited to them.

Features

1. Determines dielectric breakdown voltage of insulating oils for electrical equipment assessment.

2. Automatic voltage ramp with standardized electrode gap for reproducible breakdown measurement.

3. Suitable for transformer oils, switchgear oils and other insulating liquid testing.

4. Includes test cell, electrodes, voltage supply and safety enclosure for safe operation.

5. Automatic detection and averaging of multiple breakdowns for reliable results.

FAQ

Q1: What testing scenarios is this instrument mainly applied to?

A: The petroleum oil dielectric tester is used in electrical utilities, transformer maintenance facilities, petroleum laboratories and third-party testing organizations to measure the dielectric breakdown voltage of insulating oils used in transformers, switchgear, circuit breakers and other electrical equipment. It supports transformer oil condition monitoring, insulating oil quality assessment, preventive maintenance and electrical safety compliance. Dielectric breakdown voltage indicates the insulating strength of the oil, which decreases with moisture, contamination and degradation. Regular testing helps identify oil deterioration before it leads to equipment failure, making it essential for predictive maintenance programs in power generation, transmission and distribution systems where reliable insulation is critical for grid safety and uptime.

Q2: What standards does the instrument comply with?

A: The test method follows IEC 60156 for insulating oil breakdown voltage, ASTM D877 for dielectric breakdown voltage of insulating liquids, ASTM D1816 for VDE electrodes, and the corresponding GB/T 507 method. The instrument complies with relevant electrical safety standards for high-voltage test equipment. Electrode gap and voltage ramp rate should follow the standard specification.

Q3: What is the warranty period for the whole machine and key components?

A: The whole tester is covered by a 12-month warranty. The voltage supply, control system and test cell are covered, while electrodes and oil are consumables excluded from warranty. Damage from improper high-voltage operation, electrode contamination or unauthorized repair is excluded.

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires trained personnel familiar with insulating oil testing and high-voltage safety procedures. We provide an operation manual and remote guidance. Proper sample handling, electrode cleaning, gap setting and safety precautions are essential for accurate results and operator safety.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Voltage calibration and electrode gap verification are recommended every 6-12 months. Electrode condition should be inspected and polished periodically. Full system verification with a reference oil or certified voltage source is recommended for accredited laboratories.

Q7: Are supporting consumables universal?

A: Test cells, electrodes and reference oils are available from the supplier or authorized distributors. Long-term consumable cost is low, with electrode maintenance being the main recurring item.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes maximum voltage, electrode type, number of test cells and automation level. Additional test cells and electrodes can be ordered separately. Custom orders extend delivery lead-time.

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes the tester, test cell and accessories with an operation manual. Remote commissioning guidance is provided. On-site installation and training are not included for standard orders but can be arranged for utility or industrial setup projects.

Q10: What types of samples are compatible with this equipment?

A: The tester handles insulating oils and dielectric fluids within the method voltage range. Samples should be collected in clean, dry containers and tested promptly to avoid moisture absorption. Highly contaminated or degraded oils may produce low breakdown voltages as expected. Users should follow proper high-voltage safety procedures, including ensuring the test cell is properly enclosed and the interlock is engaged before testing.