I. Project Overview

This project is custom-made by Nanke Electric for Wuxi Yineng Power Equipment Co., Ltd. It constitutes the first part of the customer's eighth intelligent test station in 2025, specifically an online dry-type transformer one-time wiring test system. This system can complete seven factory routine tests for dry-type transformers below 1.6 MVA in a single operation, adapting to efficient operations on dry-type transformer assembly lines, eliminating the traditional repetitive wiring process, significantly improving testing efficiency, and meeting product quality control requirements in fields such as rail transit, power transmission and distribution, and new energy.

II. Maximum Testing Capability

Applicable product capacity: 30 kVA–1600 kVA (below 1.6 MVA) dry-type transformers

Adapted voltage levels: Primary side 10.00 kV, Secondary side 0.4 kV

Short-circuit impedance adaptation: 10% and below

Applicable scenarios: Dry-type transformer assembly line test area

III. Routine Test Items

1. Insulation resistance test;

2. DC resistance test:

3. Turns ratio and connection group test;

4. No-load test: No-load loss, power factor measurement, and no-load current percentage test;

5. Load test: Load loss (automatic conversion to 75°C, 120°C, 145°C load loss values), short-circuit impedance percentage

6. Induced withstand voltage test;

7. Power frequency withstand voltage test.

IV. Project Highlights

One-time wiring, highly compatible with production lines: Abandoning the traditional repetitive wiring method, all seven tests are completed with a single wiring operation, making the process simple and well-suited to the fast-paced workflow of assembly lines, thereby shortening the testing cycle for each unit.

Automatic conversion across multiple temperatures, ensuring precise and compliant data: Load loss supports automatic conversion at multiple temperature points without manual calculation, ensuring data compliance with industry testing standards.

High-precision configuration, stable measurements: Equipped with a high-precision power analyzer, featuring strong anti-interference capabilities, providing stable and reliable test data.

Mature solution, full-process service: Utilizing a proven solution, offering a short delivery cycle and integrated after-sales support including installation, commissioning, and training.

V. Commissioning Information

Client company: Wuxi Yineng Power Equipment Co., Ltd.

Commissioning time: March 2026

Commissioning date: April 2026