Obsnap Instruments Sdn Bhd
29A, Jalan SS 15/4C, 47500 Subang Jaya, Selangor, Malaysia.
+603-5621 5786
+603-5621 5829
+60122185651 (Enquiry)
+60162233687 (Vacancy)
Transformer Turns Ratio Meter Prova 1660
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Product Features
- Measurements of 1Φand 3ΦTransformer/VT/CT Turns Ratio.
- VT/PT ratio 0.8~10000, CT ratio 0.8~2000.
- Graphical and Literal Illustration of Measurements and Connections with Large Back-lighted Dot Matrix 240 x 128 LCD. Display Test Data with Nameplate Transformer Values for Easy Interpretation.
- Ten Test Frequencies (50~400Hz).
- Display Turns Ratio, Deviation, Secondary Output, Excitation Voltage and Current, Phase Angle and Nameplate Transformer/VT/CT Values in one page for easy transformer quality interpretation.
- Check for Live Test Points, Short Circuit, Open Circuit, and Reverse Polarity before Each Measurement. Message is displayed to Warn Users (But, checking is not performed once measurement starts).
- Store 4096 Files of Transformer Nameplate Values (VT/PT/CT, 1Φ/3Φ, Test Frequency, Primary and Secondary Voltages or Ratio, RCF) and Measuring Data.
- 9 types of 3Φ Windings Connections pre-installed for easy user selection.
- Wireless Blue Tooth Communication with PC.
- Select Filter to Remove Field Noise (Slow, Normal, Fast).
- Disable or Enable Auto-Power-Off with Programmable Time.
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Built-in calendar clock.
Records with Date and Time Stamp. - Powerful Lithium Battery (3400mAH) with built-in Charging Circuit.
- User Programmable RCF (Reference Correction Factor, 0.99~1.01) to Correct Accuracy within 1% Error.
- Friendly File System for Easy On-site Data Retrieval and Nameplate Values Management.
- PC Application Software included.
Electrical Specifications:
Reference Conditions：23℃± 5℃ (30 to 50% RH) range. Add 25ppm/℃ for 0° to 18℃ and 28° to 50℃ to all accuracy specifications.
No external electrical or magnetic fields. Output current ≦150 mA for VT/PT and ≦50mA for CT. Calibration cycle is 1 year.
| Ratio Range (VT/PT) | Autoranging：0.8000 to 10000：1 | |
| Accuracy (70Hz) | Ratio Range | Accuracy (% of Reading) |
| 0.8000 ~ 999.99 | ± 0.1% | |
| 1000.0 ~ 4999.9 | ± 0.2% | |
| 5000.0 ~ 10000 | ± 0.25% | |
| Ratio Range (CT) | Autoranging：0.8000 to 2000.0 | |
| Accuracy (70Hz) | Ratio Range | Accuracy (% of Reading) |
| 0.8000 to 2000.0 | ± 0.5% | |
| Excitation Signal |
VT/PT Mode：34Vrms max CT Mode：Auto Level 0 to1A, 0.1 to 20Vrms |
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Excitation Current Display |
Range：0 to 1000mA Accuracy：± (2% of Reading +2mA) |
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| Excitation Frequency (Hz) | 50, 55, 60, 70, 100, 120, 200, 240, 300, 400 | |
| Display | 5” Large dot matrix LCD display (240*128) with backlight | |
| Power Source | Rechargeable Lithium Battery, 3400mAh | |
| Battery Life | Over 10 hrs of continuous operation. Battery life (%) indication | |
| Battery Charger | Universal input (90 to 264Vrms input) | |
| Charging Time | ＜4 hrs | |
| Data Storage | 4096 Files Each (VTM, CTM, VTR, CTR, BMP) | |
| Date/ Time | Battery-backed, Real-time Calendar clock | |
| Measurement Method | ANSI / IEEE C57.12.90 and IEC 600076.1 | |
| Operation Environment | 5℃ ~ 50℃, 85% RH | |
| Storage Environment | -20℃ ~ 60℃, 75% RH | |
1. Test leads (set of 2)
2. Alligator clips (4pcs.)
3. Rechargeable lithium battery
4. User manual
5. AC adaptor
6. Power cord
7. Software CD & Manual
8. Carrying bag
