Oil Testing Instrument
LQHV-680S Three-Cup Transformer Oil BDV Tester
Fully automated dielectric strength testing for insulating oils with triple-sample efficiency
Product Parameters
Technical parameters
| Booster capacity | 1.5kVA |
| Booster speed | 2.0kV /s, 2.5kv /s, 3.0kV /s, 3.5kV /s |
| error: 0.2 kV/s | |
| The output voltage | 0 ~ 80kV (optional) |
| Voltage accuracy | ± (2% reading +2 words) |
| Power distortion rate | ＜1% |
| Electrode gap | standard 2.5 mm |
| Number of test | 6 times (1-6 times optional) |
| Let stand time | 5 min (1-9min optional) |
| Dimensions | 670mm×420mm×410mm |
| Weight | 38kg |
Conditions of Use
| Environment temperature | 0～40℃ |
| Relative humidity | ≤85% |
| Working power supply | AC220V±20% |
| Power frequency | 50Hz(1±10%) |
| Power | ＜200W |
Technical index
| Step-up transformer capacity | 1.5kVA |
| Rate of voltage rise | 2.0kV/s,2.5kV/s,3.0kV/s,3.5kV/s five gears |
| Output voltage | 0~80kV |
| Aberration rate of power supply | <1% |
| Display mode | Big LCD display Chinese characters |
| Electrode gap | Standard 2.5mm |
| Boundary dimension | 730mm×410mm×390mm |
| Instrument weight | 38kg(ODST-1203) |
Compliant with: GB507-86 | DL-474.4-92 | DL/T 596-1996
Why Choose the 680S Model?
✅ Triple-Cup Efficiency – Test 3 samples sequentially without manual intervention
✅ Military-Grade Protection – Overcurrent/voltage/short-circuit safeguards
✅ Dual Standard Modes – Supports both GB1986 & GB2002 test protocols
✅ Portable Rigidity – 10kg ruggedized design for lab/field use
Automated Workflow
Sample Loading – Fill all 3 cups simultaneously
One-Touch Start – Initiates:
Individual cup stirring (1500 RPM)
Voltage ramp-up (2kV/s)
Breakdown detection & recording
Smart Analysis – Calculates:
Average breakdown voltage per cup
Inter-cup variance (
<5% ideal="">
Fail-Safe Protections
🛡️ Watchdog Circuit – Prevents system freezes
🛡️ Auto-Zeroing – Resets between tests
🛡️ Instant Discharge – Capacitor safety dump
Applications
Power Transformers
Factory acceptance testing (FAT)
Periodic maintenance checks
Oil Regeneration
Filtration efficiency validation
Reclaimed oil quality control
Advantages vs Single-Cup Testers
| Metric | LQHV-680S (3-Cup) | Standard 1-Cup Testers |
|---|---|---|
| Testing Throughput | 3× faster | Base rate |
| Data Consistency | Cross-cup verification | Single-point data |
Maintenance Protocol
🔧 Daily: Electrode cleaning with lint-free cloth
🔧 Monthly: Calibration check with reference oil
🔧 Yearly: Full factory recalibration
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