Product introduction
The Oil Dielectric Strength BDV Tester (single cup) is one of the most critical specialized equipment used in the power industry to evaluate the electrical insulation performance of insulation oils such as transformer oil, cable oil, and capacitor oil. It accurately measures the breakdown voltage of insulating oil through highly automated processes such as oil injection, settling, stirring, boosting, detection, recording, and oil discharge, effectively evaluating the insulation performance of oil products.
As a professional Oil Dielectric Strength BDV Tester manufacturer and supplier in China, UHV focuses on delivering stable high-voltage performance, high testing accuracy, and reliable automation control for power laboratory and field applications.
Product Parameters
Technical Parameters
| Booster capacity | 1.5kVA |
| Booster speed | 2.0,2.5,3.0,3.5kV/s(adjustable) |
| Output voltage | 0-80kV |
| Voltage accuracy | ± (3% reading +2 words) |
| Power distortion rate | ＜1% |
| Display mode | Large screen LCD display |
| Electrode gap | Standard 2.5mm |
| Installation dimensions | 409×393×388mm3 |
| Weight | 29kg |
Conditions of Use
| Environment temperature | 0℃～+40℃ |
| Relative humidity | ＜85% |
| Power supply | AC 220V ± 10%,50Hz ± 5Hz |
| Power consumption | ＜200W |
Core Function & Purpose
Measure Insulating Strength: Accurately determines the highest voltage (typically expressed in kV) that insulating oil can withstand under standard test conditions without breaking down. This value is called the dielectric strength or breakdown voltage.
Assess Oil Quality: Breakdown voltage is a crucial indicator reflecting the purity, dryness, and presence of contaminants (such as moisture, fibers, carbon particles, etc.) in insulating oil. Degraded oil quality significantly reduces its breakdown voltage.
Ensure Equipment Safety: Regularly testing the dielectric strength of oil in oil-filled electrical equipment like transformers is a key preventive maintenance task to prevent internal insulation failures and ensure the safe and stable operation of power systems.
Details
FAQS
What types of electrodes are used?
Common configurations:
Spherical electrodes (IEC standard)
Plate electrodes (ASTM D877)
Adjustable gap systems (2.5 mm / 4 mm)
👉 UHV units support automatic electrode gap calibration.
Is automatic operation supported?
High-end UHV BDV testers include:
Automatic voltage rise
Automatic stirring
Automatic breakdown detection
Automatic discharge
Automatic multi-cycle testing (1–99 cycles)
📌 Benefit:
Reduces operator influence and improves consistency.
What are the requirements for the oil cup?
Standard design requirements:
High-strength transparent insulating material
Leak-proof structure
Easy cleaning design
Stable thermal performance
👉 Some models support heated oil cups for temperature control.
How stable are test results?
Stability depends on:
Electrode cleanliness
Sample uniformity
Bubble removal
Voltage ramp stability
📌 UHV design focus:
Automatic stirring system
Stable voltage ramp control
High-voltage anti-interference module
Does it support data storage and printing?
Standard functions:
Automatic data recording
Single and average result display
USB export
Built-in report printing
Advanced options:
LIMS system integration
Cloud data management
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