HF-TC-601 Transformer Turns Ratio Tester

Product Introduction

The HF-TC-601 Transformer Turns Ratio Tester is an innovative testing instrument that remedies the drawbacks of traditional ratio bridge testers. It is equipped with a large-size high-resolution LCD display with abundant displayed data, delivering great convenience for field operation.

It is mainly used for transformer turns ratio and vector group testing, as well as ratio and polarity tests on potential transformers (PT) and current transformers (CT), featuring rapid testing speed and outstanding measurement accuracy.

Features & Core Functions

1. Adopts full three-phase sine wave inverter power supply with automatic output voltage regulation, as well as soft start and soft stop functions to ensure fast testing and high precision.
2. Supports blind measurement, which enables turns ratio and vector group detection without prior knowledge of the high-low voltage winding connection mode.
3. On the basis of testing standard transformers and Z-type transformers as well as PT samples, it adds CT turns ratio and polarity testing capability for wider application scenarios.
4. Boasts a wide measuring range and high precision. The maximum measurable turns ratio reaches 10000, with guaranteed accuracy of 0.3% at the full-scale range of 10000.
5. Built-in comprehensive protection mechanisms including reverse connection protection and output short-circuit protection.
6. Fitted with a 5.6-inch extra-large industrial high-brightness color LCD screen for clear readout even under direct strong sunlight.
7. Comes with a thermal printer to support on-site data printout.
8. Supports local onboard data storage and USB flash disk storage for convenient data archiving.

Technical Specifications

Turns Ratio Measurement

Measuring Range: 0.9 ~ 10000

Accuracy

• ≤ 500: ±(0.1% of reading + 2 digits)
• 500 ＜ Ratio ≤ 3000: ±(0.2% of reading + 2 digits)
• Ratio ＞ 3000: ±(0.3% of reading + 2 digits)

Resolution

• 0.9 ~ 9.9999: 0.0001
• 10 ~ 99.999: 0.001
• 100 ~ 999.99: 0.01
• 1000 ~ 9999.9: 0.1
• ≥ 10000: 1

Operating Conditions & Physical Dimensions

• Power Supply: AC 220V ±10%
• Power Frequency: 50/60 Hz
• Operating Temperature: -10℃ ~ 50℃
• Relative Humidity: ≤90%, non-condensing
• Main Unit Weight: 3.8 kg (excluding test leads)
• Overall Dimension: 325mm (L) × 225mm (W) × 125mm (H)

Packing List

No.	Item	Quantity
1	Main Tester Unit	1 Set
2	Test Leads	1 Set
3	Power Cord	1 Piece
4	Operation Manual	1 Copy
5	Inspection Report	1 Copy
6	Certificate of Conformity	1 Piece

On-site Test Procedures for Transformer Turns Ratio Tester

1. Cut off transformer power supply completely, perform electricity verification and hang earthing wires for safety.
2. Connect the tester to AC220V power supply, link test clips to HV and LV terminals of the transformer correctly.
3. Power on the device, select test object: standard transformer, Z-type transformer, PT or CT. Enable blind test if the vector group is unknown.
4. Start automatic measurement; the instrument will output three-phase test signal and calculate turns ratio, vector group and polarity automatically.
5. Save test data to local storage or USB flash drive, and print reports via the thermal printer if needed.
6. Power off the tester, disconnect all wires and remove grounding wires after the whole test.

Why Choose Us

Our tester features ultra-wide measurement range up to 10000 and graded high testing accuracy, supporting blind testing without pre-known winding connection modes for transformers, CT and PT. Built-in multiple safety protections effectively prevent damage from miswiring and short circuits. Equipped with a sunlight-readable color screen, thermal printing and dual storage modes, it adapts perfectly to complex field working conditions.

We also provide complete after-sales technical guidance and customized service to meet various substation inspection and project acceptance demands worldwide.

FAQ

Q1: What items can this tester measure?

A1: It tests turns ratio and vector group of power transformers, ratio & polarity of PT and CT, and also supports Z-type transformer inspection.

Q2: What is the maximum measuring range of turns ratio?

A2: The measuring range covers 0.9 to 10000, with corresponding guaranteed accuracy under different ratio intervals.

Q3: What does blind test function mean?

A3: It can finish ratio measurement and vector group identification even when users do not know the connection mode of transformer windings in advance.

Q4: Does the device have protection functions?

A4: Yes. It is equipped with reverse connection protection and output short-circuit protection to avoid instrument damage caused by wrong wiring.

Q5: How can test data be saved and exported?

A5: It supports local internal storage and USB flash disk storage. Built-in thermal printer enables direct on-site printing of test reports.

Q6: Is the display clear under outdoor strong sunlight?

A6: Adopting a 5.6-inch industrial high-brightness color LCD screen, the screen content remains legible even in direct intense sunlight.

Q7: What are the applicable working environment conditions?

A7: Operating temperature ranges from -10℃ to 50℃; relative humidity ≤90% without condensation; input power is AC220V 50/60Hz.

Q8: Can it conduct three-phase synchronous testing?

A8: Yes, it adopts full three-phase sine wave inverter output with automatic voltage regulation, realizing fast and stable three-phase testing.