Power Transformer Winding Frequency Response Test Equipment for Detecting Coil Displacement After Short Circuit Faults

Product Introduction

SXRZ-2020 Transformer Winding Deformation Tester

The Power Transformer Frequency Response Test System is used for transformer winding testing by comparing frequency response characteristics related to the internal winding structure. Under normal conditions, the three-phase frequency response curves of a transformer have a basically consistent coupling relationship. If the winding structure changes due to inter-turn or inter-phase short circuits, operating faults, coil displacement or transportation impact, its distributed parameters and frequency response may also change.

To accommodate different testing requirements, the system provides six frequency scanning modes. Linear scanning is available from 1kHz to 1000kHz or 2000kHz with different step settings, while segmented scanning can start from 100Hz. The equipment is designed for 63kV-500kV transformers and is suitable for transformer manufacturers, substations and related organizations.

Frequency Scan Configurations

• Linear Scan: 1kHz-1000kHz, 1.0kHz step, 1000 points
• Linear Scan: 1kHz-1000kHz, 0.5kHz step, 2000 points
• Linear Scan: 1kHz-2000kHz, 1.0kHz step, 2000 points
• Linear Scan: 1kHz-2000kHz, 0.5kHz step, 4000 points
• Segmented Scan: 100Hz-1000kHz, 1440 points
• Segmented Scan: 100Hz-2000kHz, 2440 points

Product Features

Multiple Scanning Options
Six different frequency scanning modes are available for transformer winding testing.

Wide Frequency Coverage
The available configurations cover frequency ranges from 100Hz to 2000kHz.

Different Resolution Options
Linear scanning supports 1.0kHz and 0.5kHz steps according to the selected configuration.

Wide Transformer Application Range
The system is applicable to 63kV-500kV transformers.

Applications

• Substation transformer testing
• Transformer manufacturing inspection
• Winding deformation testing
• Coil displacement inspection
• Short-circuit-related winding inspection
• Transportation impact inspection

FAQ

Q1: What does the system analyze?
It evaluates changes in transformer winding frequency response characteristics.

Q2: What can cause changes in winding frequency response?
Inter-turn short circuits, inter-phase short circuits, operating faults, coil displacement and transportation impact may change the response.

Q3: What scan modes does the system provide?
It provides six linear and segmented frequency scanning modes.

Q4: What is the applicable transformer range?
The system is applicable to 63kV-500kV transformers.