SF6 Tester

Product Features for SF6 Tester
1. Self calibration: The laser probe can automatically calibrate the zero point, eliminate system errors caused by zero point and drift, and ensure the accuracy of each measurement.
2. Easy to operate, with a large touch LCD screen and WYSIWYG simple operation.
3. Optional pipeline cleaning device can be equipped to automatically clean internal pipelines after testing, improving testing speed and accuracy.
4. Quick gas saving: After starting up and entering the measurement mode, the dew point measurement time is about 3 minutes each time.
5. Self locking connector: using original imported self-locking connectors, safe and reliable, without air leakage.
6. Data storage: Designed with a large capacity, it can store up to 999 sets of test data.
7. Clear display: The 7-inch ultra large touch LCD screen directly displays dew point, micro water (ppm), SF6 content, SF6 decomposition product content, environmental temperature, environmental humidity, time, and date.
8. Built in USB interface, can be connected to a PC, and all internal data of the instrument can be uploaded to the computer through supporting software for convenient data analysis.
9. Equipped with a large capacity rechargeable lithium battery, it can work continuously for more than 8 hours on a single charge.

 

Application Scenario of SF6 Tester
SF6 gas detection covers the entire business process of the new power system: in substations and converter stations, it is used for daily equipment inspection, regular testing, and hidden danger investigation; During the commissioning phase of the new equipment, complete gas quality acceptance to ensure initial operational safety; In fault diagnosis, quickly identify the cause of abnormalities and provide data basis for emergency repair and disposal; In terms of environmental protection and gas reuse, support SF6 recovery, testing, and reuse, and assist in low-carbon compliance management; Adapt to the complex environmental characteristics of wind power, photovoltaic and other new energy stations to ensure the reliable operation of grid connected high-voltage equipment.

Advantages of SF6 Tester
Highly integrated
High precision sensor
Self calibration function
Easy to operate
Efficient and Time-Saving
Safe and reliable
Large capacity data storage
Convenient data transmission
Long Battery Life

 

FAQ

1. What does this system mainly test?

This SF6 tester covers two major testing areas:

✔ Transformer oil testing

Dielectric loss (Tan δ / dissipation factor)

Volume resistivity

Breakdown voltage (BDV)

Moisture content (optional integration)

✔ SF6 gas testing

SF6 purity

SF6 decomposition by-products (SO₂, H₂S, HF, etc.)

Moisture / dew point

📌 Purpose:
To assess insulation condition of transformers and evaluate the health of SF6-filled GIS and switchgear.

 

2. Why combine oil and SF6 testing in one system?

In power systems:

Transformers rely on insulating oil

GIS and switchgear rely on SF6 gas

Both directly reflect insulation performance and fault conditions such as discharge, overheating, or degradation.

📌 UHV concept:
One platform, covering both liquid and gas insulation diagnostics.

 

3. Which international standards are supported?

✔ Transformer oil testing

IEC 60247 (dielectric loss)

IEC 60156 (breakdown voltage)

ASTM D924 (tan δ)

GB/T 5654

✔ SF6 testing

IEC 60480 (SF6 gas analysis)

IEC 60376 (new SF6 gas standard)

ASTM D2472 (related gas purity methods)

 

4. Key parameters for transformer oil testing

✔ Breakdown voltage (BDV)

Range: 0–60 kV / 80 kV / 100 kV options

Ramp rate: 2 kV/s ±10%

Response time: <10 ms

✔ Dielectric loss (Tan δ)

Range: 0.0001 – 1

Accuracy: ±(1% reading + 0.0001)

Test voltage: 2.5 kV / 10 kV

✔ Volume resistivity

Range: 10⁶ – 10¹⁶ Ω·cm

pA-level current measurement

 

5. Key parameters for SF6 gas testing

✔ SF6 purity

Range: 0–100%

Accuracy: ±0.5% FS

✔ Dew point

Range: -80°C to +20°C

Accuracy: ±0.5°C

✔ Decomposition gases

SO₂: 0–100 ppm

H₂S: 0–100 ppm

HF: trace-level detection (high-end configuration)

 

6. Measurement principle of SF6 tester

✔ Transformer oil

High-voltage electrode system (sphere–sphere / sphere–plate)

Automatic voltage ramp control

Temperature-controlled oil cell

✔ SF6 gas

Electrochemical or NDIR infrared sensors

Automatic gas sampling module

 

7. Is an integrated system available?

UHV offers modular integrated solutions:

Combined Transformer Oil + SF6 testing platform

Shared control system

Switchable test modules

📌 Benefits:

Lower equipment investment

Reduced lab footprint

Unified data management

 

8. Software and data handling of SF6 tester

Typical UHV software functions include:

✔ Oil analysis

BDV statistics

Weibull distribution analysis

Automatic Pass/Fail judgment

✔ SF6 analysis

Purity trend monitoring

Dew point curves

Alarm threshold evaluation

✔ Output formats

PDF reports

Excel export

LIMS system integration

 

9. Testing efficiency of SF6 tester

✔ Transformer oil

BDV: 1–3 min/sample

Tan δ: 3–5 min

✔ SF6 gas

Purity: 2–5 min

Dew point: 5–10 min

Batch testing supported.

 

10. Automation level

Core automation functions:

Automatic voltage control

Automatic oil temperature control

Automatic gas sampling

Automatic data logging

Automatic report generation

High-end systems support unattended operation.

 

11. Safety design

✔ BDV safety

Automatic discharge protection

Interlock system

Overvoltage protection

✔ SF6 safety

Leak-proof gas path

Sealed sampling system

Automatic alarm function

 

12. Common issues in practice

Transformer oil testing

Air bubbles → low BDV values

Contaminated oil → unstable results

Electrode contamination → poor repeatability

SF6 testing

Moisture interference → dew point deviation

Gas leakage → purity error

Sensor drift → long-term deviation

 

13. Stability and reliability of SF6 tester

Key engineering considerations:

Constant high-voltage control

Sensor auto-calibration

Leak-proof gas circuit design

Temperature compensation algorithms

EMI resistance design

📌 Performance targets:

BDV repeatability ≤3%

SF6 drift ≤1% per year

 

14. Application scope of SF6 tester

Suitable for:

Power utilities and grid companies

GIS and substation maintenance teams

High-voltage laboratories

Third-party testing organizations

Transformer manufacturers

 

Procurement recommendations (UHV view)

✔ Basic configuration

BDV + SF6 purity tester

✔ Standard utility configuration

BDV + Tan δ + SF6 purity + dew point

✔ Advanced laboratory system

Full transformer oil + SF6 integrated platform

LIMS connectivity + automated reporting

Multi-module expansion capability

 

If you are looking for SF6 Tester supplier, we are a good choice.
Contact us to get SF6 Tester price.

 

As one of the leading sf6 tester manufacturers and suppliers in China, we warmly welcome you to buy high-grade sf6 tester made in China here from our factory. For price consultation, contact us.

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