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Factory-Direct Price All-in-One Portable TTR Tester for Single/Three-Phase Transformers Turns Ratio Test Set
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The TTR-1000 Transformer Turns Ratio (TTR) Tester is a state-of-the-art, microprocessor-based instrument designed for fast, accurate, and reliable measurement of turns ratio, excitation current, and winding connections of single-phase and three-phase power transformers, potential transformers (PTs), and current transformers (CTs). With its advanced digital signal processing and user-friendly interface, the TTR-1000 is an indispensable tool for transformer manufacturing, commissioning, routine maintenance, and diagnostic testing, ensuring the health and efficiency of your power systems.
High Precision & Wide Range: Delivers exceptional accuracy for turns ratio measurements across an extensive range (e.g., 0.8 to 15000), suitable for virtually all distribution and power transformers.
Fully Automatic Testing: Simply connect the leads and press "Test." The instrument automatically determines the phase, applies the correct test voltage, calculates the ratio, and displays results clearly—minimizing operator error.
Three-Phase & Single-Phase Testing: Capable of measuring single-phase transformers and automatically testing three-phase transformers in various vector groups (Yy, Dd, Yd, Dy, etc.) with sequential results.
Winding Connection Diagnostics: Automatically identifies wiring errors and common transformer faults such as shorted turns, open windings, and incorrect tap changer positions.
Excitation Current Measurement: Measures magnetizing (excitation) current, a key parameter for detecting core and winding issues like inter-turn shorts or core insulation problems.
Phase Angle Measurement: Calculates and displays the phase displacement between voltages, crucial for verifying transformer vector group.
Large Color Display & Intuitive UI: Features a clear LCD/TOUCH screen that shows comprehensive results, connection diagrams, and pass/fail indications based on pre-set limits.
Built-in Memory & Data Management: Stores thousands of test results with date/time stamps. Data can be reviewed on the device or transferred to a PC via USB or Bluetooth for report generation and trend analysis.
Robust & Portable Design: Housed in a rugged, field-ready case with protective test leads. Lightweight and battery-operated for extended use in substations and remote field locations.
Safety & Reliability: Equipped with built-in protections against over-voltage, over-current, and reverse polarity. Auto-discharge circuitry ensures operator safety after testing.
Turns Ratio Measurement
Range
0.8 to 15000
Basic Accuracy
±0.05% (typical for 1:1 to 1000:1 range)
Resolution
0.0001
Voltage Measurement
Test Voltage
Adjustable, typically 5V, 25V, 50V, 100V, 120V, 220V AC
Accuracy
±0.1% of reading
Excitation Current
Range
1 mA to 10 A
Accuracy
±0.5% of reading
Phase Angle Measurement
Range
0 to 360 degrees
Resolution
0.01 degrees
Accuracy
±0.1 degrees
General Specifications
Power Supply
Rechargeable Li-ion battery, 8+ hours operation. AC adapter (110V-240V).
Display
5.7-inch or larger color LCD with touch screen.
Communication
USB, Bluetooth (optional), RS-232 (optional).
Internal Memory
Capable of storing >10,000 test records.
Operating Environment
Temperature: -10°C to 50°C (14°F to 122°F)
Humidity: <85% RH, non-condensing.
Dimensions & Weight
Approximately 300 x 250 x 150 mm (11.8" x 9.8" x 5.9"), ~5 kg (11 lbs).
Safety & Compliance
Meets IEC 61010-1 safety standards. CE marked.





