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CVT.3000C VT/CVT Analyser

The CVT.3000C is a high-performance VT/CVT analyser designed for accurate testing of capacitive and electromagnetic voltage transformers up to 800 kV.
It eliminates the need for traditional equipment such as standard PT/VTs, resonance boosters, and load boxes by applying advanced analytical methods to derive excitation characteristics and error curves directly.
Built with DSP + FPGA processing, an ARM industrial computer, and an 8-inch touch display, it delivers exceptional automation, safety, and operational efficiency for both field and laboratory testing.

Key Features

  • Tests CVT, CCVT, and electromagnetic PT without standard PT/VT, booster, or load box

  • Wide test range — supports 6 kV to 800 kV VT levels

  • Built-in internal standard transformer (0.01 accuracy) and advanced frequency-interval test method

  • Max output only 3 kV, ensuring safe field testing

  • Intelligent detection of incorrect wiring, polarity, tip ratio, etc.

  • Simple wiring and guided operation for fast testing

  • Color display highlights out-of-tolerance test points

  • Stores up to 10,000 test records

  • Aluminum chassis with strong anti-interference protection for HV environments

  • 8-inch high-resolution LCD with touch support

Technical Specifications

Usage Capabilities

  • PT excitation characteristics

  • Ratio testing

  • Polarity testing

  • Secondary winding resistance

Working Power Supply

  • Input Voltage: 185–250 V AC

  • Allowable Voltage: 85–264 V AC

  • Frequency: 50/60 Hz

  • Allowable Frequency Range: 45–65 Hz

  • Input Power: 800 VA

  • Connector: Standard AC 60320 socket

PT Ratio Accuracy

  • Ratio 1–350 → 0.03% typical

  • Ratio 350–1100 → 0.05% typical

  • Ratio >1100 → 0.07% typical

Phase Measurement

  • Resolution: 0.01 min

  • Accuracy: 2 min

Secondary Winding Resistance Test

  • Range: 0 VA ~ 500 VA

  • Resolution: 1 mΩ

  • Accuracy: 0.2%

AC Load Measurement

  • Range: 0 VA ~ 1000 VA

  • Resolution: 0.02 VA

  • Accuracy: 0.05%

Output

  • LV Output: 0–120 V, 5 A RMS, 600 VA, 12 A peak

  • HV Output: 0–3000 V

Environmental Conditions

  • Operating Temperature: –10°C to +50°C

  • Storage Temperature: –25°C to +70°C

  • Relative Humidity: 5%–95%

Physical Characteristics

  • Size: 365 × 290 × 155 mm

  • Weight: 18 kg

Standard Accessories

  • High-voltage output lead set

  • Low-voltage output leads

  • Grounding lead

  • AC power cable

  • Touchscreen stylus (if included by manufacturer)

  • Carry case

  • User manual

  • Calibration certificate

Applications

  • CVT/CCVT accuracy verification

  • PT excitation and error testing

  • High-voltage substation diagnostic testing

  • Field acceptance & commissioning work

  • Laboratory transformer characterization

Optional Accessories

  • Extended HV cable sets

  • Transport hard case

  • External burden box

  • PC software suite (upload / reporting)

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