I. Product Introduction

The HZ2162 Transformer Comprehensive Tester integrates a DC resistance tester and transformer ratio tester into one device for testing large power transformers.

II. Product Features

l Product Design

1. One-time wiring completes all test items, reducing the workload of on-site testers.

2. Equipped with a 7-inch color touch LCD screen for control and display, providing a user-friendly interface.

3. Built-in micro printer for on-site printing of test results.

4. USB storage function for external storage of test results.

5. One isolated RS232 communication interface with standard protocol communication.

6. Bluetooth communication module with standard protocol wireless communication.

7. High-reliability RS485 bus for internal communication.

8. Isolated circuit design to eliminate interference between test functions; hardware and software filtering to improve anti-interference capability; good grounding and shielding measures to enhance overall anti-interference capability.

l DC Resistance Test

1. Three-phase simultaneous testing and automatic magnetization.

2. High and low voltage current and potential test leads can be connected to the transformer at once, eliminating the need to switch test leads during the test.

3. For star-connected windings with a neutral point, the A0, B0, and C0 phase resistances can be tested simultaneously, significantly saving test time.

4. For an internally delta-connected three-phase five-limb transformer, the automatic excitation method can be used during low-voltage side testing, which offers fast testing speed.

5. Displays and prints all test data of high, medium, and low voltage windings, automatically calculates three-phase unbalance, and prints resistance values converted to rated temperature.

6. Comprehensive back EMF protection.

l Transformer Ratio Test

1. Chinese/English menu prompts, simple and convenient operation.

2. Three-phase testing only requires inputting the high-voltage side connection method to automatically measure the group.

3. Capable of both single-phase measurement and automatic testing of three-phase windings. The connection group can be arbitrarily selected, completing the measurement of parameters such as the ratio, error, and connection group of AB, BC, and CA phases in one go.

4. Protection function for high and low voltage reverse connection.

5. Fast testing speed, completing single-phase testing in 15 seconds.

6. Protection functions for transformer short-circuit and inter-turn short-circuit.

III. Main Technical Specifications

1.DC Resistance Test

2.Transformer Ratio