PROVA

📐 Measurement Capabilities

1.    Supports transformers (VTs), potential transformers (PTs), and current transformers (CTs).

2.    Voltage ratio measurement range: 0.8 to 10,000.

3.    Current ratio measurement range: 0.8 to 1,000.

4.    Best accuracy: ±0.1%.

📊 Display

1.    Large 5-digit backlight LCD for clear visibility.

2.    Toggle display between: Actual turns ratio or Percentage error against reference ratio.

🧪 Pre-Test Safety Checks

1.    Detects live voltage on primary or secondary windings.

2.    Verifies correct wiring on both primary and secondary sides.

3.    Measures winding resistance to detect open or short circuits.

4.    Confirms correct polarity on the secondary side connection.

⚡ Test Execution & Results

1.    Displays turns ratio within 30 seconds including passing all checks.

2.    Post-test display includes:
Excitation voltage and Excitation current;
Resistance of primary side coils and secondary coils.

🧠 Smart Functions & Diagnostics

1.    10 pre-stored reference ratios for quick comparison.

2.    Users can customize reference ratios as needed.

3.    Built-in 1:1 self-test function to verify the basic instrument functionality.

🔋 Power & Energy Management

1.    Equipped with a 3400mAh high-capacity lithium battery.

2.    Integrated charging circuit.

3.    Auto power-off after 15 minutes (user-configurable).