LQHV-312 Transformer Winding Deformation Tester: Dual-Method Analysis for HV Equipment

Product Overview

The LQHV-312 Sweep Frequency Response Analyzer is an intelligent diagnostic instrument that integrates two testing methodologies:

• Frequency Response Method (DL/T 911-2016 & IEC 60076-18 compliant)

• Low-Voltage Short-Circuit Impedance Method

This dual-approach system provides 360° assessment of power transformer winding conditions for equipment rated 66kV and above.

Product Parameters

Technical parameter

Dual Testing Methodology

1. Frequency Response Analysis

Detects winding deformation through amplitude-frequency characteristics:

• Identifies radial deformation, axial displacement, and hoop buckling

• Simultaneously compares 9 reference curves

• Automated diagnosis with conclusion generation

2. Low-Voltage Impedance Method

Mechanical stability assessment via impedance changes:

• Three-phase automatic measurement (AB/BC/CA)

• Real-time waveform visualization

• Automatic impedance error percentage calculation

Compliance & Standards

The LQHV-312 meets critical industry requirements:

• China Power Industry Standard DL/T 911-2016

• International Electrotechnical Commission IEC 60076-18

• State Power Company Document [2000]589 Article 15

Field-Proven Applications

• Pre-commissioning Verification: Baseline measurements for new transformers

• Post-Fault Assessment: Damage evaluation after short-circuit events

• Preventive Maintenance: Periodic winding condition monitoring

• Factory Acceptance Testing: Quality control for transformer manufacturers

Intelligent Software Features

• Automatic Word/JPG report generation

• One-button operation workflow

• Built-in oscilloscope functionality

• Historical data trend analysis

Why Choose LQHV-312?

This analyzer provides transformer maintenance teams with:

• Time Efficiency: 75% faster than conventional methods

• Data Accuracy: 0.005% frequency precision

• Regulatory Compliance: Meets all major international standards

• User Safety: 5000V isolation protection system

For critical power infrastructure, the LQHV-312 delivers unmatched diagnostic capabilities without requiring transformer disassembly or de-tanking.