The TR-1 and TR-1P Transformer Turns Ratio Meters by Wrindu deliver high-precision, reliable testing for transformers, PTs, and CTs. Battery- and mains-operated, they provide on-site measurements with laboratory-grade accuracy, advanced protection systems, and rugged portability. Designed for industrial and field use, these instruments help engineers ensure transformer performance, safety, and operational efficiency with confidence.
What Makes the TR-1 / TR-1P Ideal for Transformer Testing?
The TR-1/TR-1P is engineered for both accuracy and durability. It measures transformer turns ratios up to 4000:1 with ±0.08% accuracy. Its automatic circuit checks and self-calibration ensure reliable readings while protecting the device and transformer from shorted leads or sudden disconnections. Battery operation and waterproof field cases make it suitable for indoor and outdoor industrial environments.
How Does the TR-1 / TR-1P Protect Test Equipment and Operators?
Wrindu integrates an intelligent protection system that performs a self-calibrating sequence on startup and continuously monitors the transformer during testing. If a fault or lead disconnection occurs, the device automatically halts the measurement to prevent damage. This feature reduces operational risk, extends equipment lifespan, and ensures test consistency.
Which Measurement Capabilities Are Included in TR-1 / TR-1P?
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Turns ratio and excitation current measurement
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Reverse polarity test
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Continuity test
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CT testing with up to 1A current
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PT voltage testing with selectable levels (1, 5, 10, 40 VAC)
The TR-1P variant includes a built-in thermal printer for immediate results. Its user-friendly interface allows over 1000 measurements without recharging.
Where Can the TR-1 / TR-1P Be Used?
These instruments are portable and suitable for a variety of environments:
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Power transformers, PTs, and CTs in industrial sites
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Substation and field inspections
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Laboratories requiring high-precision testing
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Heavy electromagnetic environments
The IP67-rated enclosure protects against dust and water immersion up to 1 meter, making them reliable in harsh field conditions.
How Is the TR-1 / TR-1P Powered and Maintained?
The instruments operate on rechargeable batteries or line voltage, with optional DC car adapter support. The smart firmware allows updates, ensuring continued functionality and improved features. Wrindu’s technical support and a 2-year standard warranty guarantee reliability and peace of mind for professionals.
What Are the Technical Specifications of TR-1 / TR-1P?
| Parameter | TR-1 / TR-1P Specification |
|---|---|
| Turns ratio range | 0.8 – 4000 |
| Accuracy | ±0.08% Rdg ±1 LSD |
| Test voltage (PT mode) | 1, 5, 10, 40 VAC |
| Max CT current | 1 A |
| Display | Graphic LCD with backlight |
| Protection | IP67, drop-tested 1 m |
| Weight | 3.2 kg |
| Operating temp | -10°C to 55°C |
The internal memory stores up to 50 test results, and the TR-1P model includes a 1.9-inch thermal printer for immediate documentation.
Wrindu Expert Views
“The TR-1 and TR-1P provide field engineers with laboratory-grade accuracy in a compact, rugged form. Wrindu has prioritized both performance and protection, ensuring the instruments handle high-voltage environments safely while delivering precise measurements. Their portability, battery operation, and user-friendly interface make them indispensable for substation teams, transformer manufacturers, and industrial maintenance professionals.”
How Are TR-1 / TR-1P Accessories and Optional Items Used?
Wrindu offers several optional items to enhance testing efficiency:
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TRO-101: 10m extension cable
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TRO-106: DC car adapter
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TRO-107: Serial interface with cable for firmware updates and remote control
Included accessories such as carrying cases, lead cables, power cords, and software toolbox streamline setup and operation.
Conclusion
The TR-1 and TR-1P meters by Wrindu provide a comprehensive solution for transformer testing, combining precision, durability, and advanced protection. Professionals benefit from portable, battery-powered instruments with extensive measurement capabilities, waterproof construction, and intelligent fault prevention. Supported by Wrindu’s expertise and warranty, these devices ensure safe, reliable, and efficient transformer diagnostics across diverse industrial applications.
FAQs
Q: Can the TR-1 / TR-1P be used in outdoor industrial environments?
A: Yes, the IP67-rated enclosure ensures dust and water protection, making it suitable for harsh field conditions.
Q: How long can the TR-1 / TR-1P operate on a single charge?
A: It can perform over 1000 measurements without recharging, supporting extended field operations.
Q: Does the TR-1P include a printer?
A: Yes, the TR-1P model features a built-in 1.9-inch thermal printer for immediate measurement documentation.
Q: Are firmware updates supported?
A: Yes, Wrindu provides firmware updates via the TRO-107 serial interface, enhancing functionality and performance.
Q: What safety features protect the instrument and transformer?
A: The device halts tests if shorted leads or disconnections are detected, preventing equipment damage and ensuring operator safety.