Portable Handheld TTR Tester

Product Overview

In process production of the power transformer's semi-finished products and finished products ,before the newly installed transformer put into operation, according to the preventive test code of the state power department, it is required to run regular transformer turns ration or voltage ratio test.

The HM5001P Portable Transformer Turns Ratio Testeris a state-of-the-art instrument designed for accurate and efficient measurement of transformer turns ratios (TTR). It is widely used in power utilities, transformer manufacturers, and industrial maintenance departments for testing single-phase and three-phase transformers, including power transformers, distribution transformers, and instrument transformers (PTs/CTs).

Application Scenarios

Manufacturing Quality Control:Verifies transformer design consistency.

Field Maintenance:Checks transformer health after faults or aging.

Commissioning:Ensures correct installation before energizing transformers.

Repair Shops:Validates rewinding or repair work.

1.The tester is a portable device with small size and light weight.

2. It has the characteristics of simple operation, high accuracy, anti-interference, shockproof and convenient carrying;

3. The large-capacity lithium battery can be used continuously for more than 6 hours at a time, and the battery can be replaced at any time, providing guarantee for the continuous test of users;

4. Perfect back EMF protection function;

5.Fast measurement speed, accurate and stable measurement data;

6.The test process is controlled by a computer and automatically completes self-calibration, current stabilization judgment, data processing and numerical display;

7. Full-transparent 7-inch large-screen LCD can be clearly displayed in the sun;

8. Built-in thermal printer is convenient for users to print on site;

9. The instrument software has complete functions, with built-in instructions for use, key instructions, wiring diagrams, precautions and other introductions, which are convenient for users to consult during on-site trial.

10. Clock and date display without power-off, with local storage and USB flash disk storage function, can store more data, with R232 and USB interface to facilitate data docking with the counter.

11. The instrument uses silicone keys to enhance the touch of pressing in use and make the key operation more sensitive; Silicone material enhances the service life of keys.

12. The test range is wide, and the transformation ratio can be measured up to 10000;

13.Ζ Test of V-connected transformer;

14.It has the function of blind test of transformer ratio and group test; Vector graphics display. Phase angle graphic display 0-360 º resolution 0.01 º 15.High and low voltage reverse connection protection and short circuit protection function;

emperature Range:-10°C to 50°C (14°F to 122°F)

Humidity:≤85% RH (non-condensing)

Altitude:≤2000 meters above sea level

Environment:

Dry, clean, and well-ventilated

Free from dust, corrosive gases, or explosive hazards

Avoid strong electromagnetic interference (e.g., near high-voltage lines)

Accessories List:

1. Standard Test Leads & Connectors

HV (High-Voltage) Test Leads(set of 2) – Red/Black

LV (Low-Voltage) Test Leads(set of 2) – Red/Black

Alligator Clips(insulated, 4 units)

Pin Probes(for terminal blocks, 2 units)

Grounding Cablewith secure clamp

2. Power & Charging Accessories

AC Power Adapter(input: 100–240V AC; output: DC as specified)

Rechargeable Lithium Battery Pack(pre-installed or separate)

Charging Cable(where applicable)

Q:6. What safety features does it include?

A: Auto-discharge of transformer windings after testing.

Grounding detection to ensure safe connections.

Overvoltage and overcurrent protection.

Q:7. How does it simplify three-phase transformer testing?

A: Pre-configured settings for common vector groups.

Automatic phase rotation detection.

Simultaneous measurement of all three phases (with optional adapter).

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