Product Introduction
MOEORW-W801E is an intelligent fully automatic anti-interference dielectric loss tester built for substation on-site commissioning and preventive tests under strong electromagnetic environments. Adopting variable-frequency power supply and Fourier transform digital filtering, it effectively suppresses 50Hz industrial frequency interference and delivers stable, high-precision measurements of capacitance (Cx) and dielectric loss (tgδ). With a built-in 10kV high-voltage source and standard capacitor, it supports one-key fully automatic testing and is widely used for transformers, CVTs, bushings, capacitors, arresters and insulating oil tests.
Unlike traditional bridge measurement methods, the W801E integrates a high-power switching supply that outputs 45Hz/55Hz pure sine waves to avoid on-site 50Hz interference. It supports 40–70Hz wide-range frequency tuning and can identify external high-voltage frequencies, making it ideal for large-capacity samples and series-resonance test systems. The touch-screen LCD and microprocessor control realize full-automatic boost, measurement, data storage and printing.
Product Parameter (specification)
| Accuracy |
Cx: ±(reading × 1% + 1pF) tgδ: ±(reading × 1% + 0.00040) |
| Anti-interference performance | The frequency converter exhibits strong anti-interference capabilities, maintaining the aforementioned accuracy even under 200% interference. |
| Capacitance range |
Internal high voltage: 3pF～60000pF/10kV; 60pF～1.5μF/0.5kV External high voltage: 3pF～1.5μF/10kV; 60pF～30μF/0.5kV |
| Resolution | Up to 0.001pF, 4 significant digits |
| tgδ range | Unlimited, resolution 0.001%, automatic identification of capacitor/inductor/resistor |
| Test current range | 5μA～5A |
| Internal high voltage |
Voltage: 0.5～10kV; Max output current: 200mA Arbitrary voltage setting (e.g. 5123V) |
| Test frequency |
40–70Hz, single frequency arbitrary setting Auto dual frequency: 50±0.1Hz ↔ 50±10Hz or 60±0.1Hz ↔ 60±10Hz Frequency accuracy: ±0.01Hz |
| External high voltage | Max test current 5A, frequency 40–70Hz (positive/reverse connection) |
| CVT self-excited low-voltage output | 3～50V, output current 3～30A |
| Measurement time | Approx. 40 seconds (depends on method) |
| Input power | 180V～270VAC, 50Hz±1% (mains or generator) |
| Computer interface | Standard RS232, USB flash drive port (auto save) |
| Printer | Miniature thermal printer |
| Ambient conditions | -10℃～50℃, relative humidity <90% |
| Dimensions & Weight | 500mm×377mm×330mm, 28kg |
Product features and applications
- Adopts Fourier transform digital filtering to ensure accuracy under 200% strong interference.
- Full touch-screen large LCD with graphical UI, no professional training required.
- Built-in calendar, large-capacity storage, USB export and PC software management.
- Supports PC remote control: one computer can connect and control up to 32 units.
- Optional Bluetooth communication, compliant with State Grid digital test specifications.
- Integrated electric shock protection, grounding lock and overcurrent protection.
- Supports AC withstand voltage test for PT/CT secondary and 400V low-voltage systems.
Prodection details
Substation handover & preventive test under strong 50Hz interference
CVT self-excitation & non-disconnection reverse test
Insulating oil dielectric loss test with standard oil cup
Large-capacity / high-voltage capacitor dielectric loss test
On-site test in power plants, industrial parks and high-electromagnetic fields
Company Qualifications
FAQ
Q: Are you a factory or a trading company?
A: We are a professional manufacturer of testing equipment.
Q: How is the after-sales service?
A: The warranty period is 12 months. After the warranty period, we also provide lifetime service paidrepair or service.
Q: What about transportation?
A: It depends on your requirements. We can ship to your airport by air, to your seaport by sea, or to your office by courier.
We also accept cooperation with your shipping agent.
Q: Are your keyboard, interface, software, and manuals in English?
A: Yes, if you are using the English version of the keyboard, interface, software, and manual and require other languages, please contact us for confirmation.
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