LQHV-315 Automatic Transformer Test Bench: Comprehensive Testing Solution for Power Transformers

Product Overview

The LQHV-315 is an integrated test platform for power and distribution transformers up to 2500kVA, automating critical tests including:

• No-load and load characteristic tests

• DC resistance measurement

• Voltage ratio and vector group tests

• Power frequency withstand voltage tests

• Frequency-doubling induction tests

Compliant with Chinese national standards GB/T 4776, GB/T 5169, and GB 4285-1993.

Product Parameters

scanning way：(The instrument has a linear sweep measurement system and a segmented sweep measurement system )

Testing Capabilities

1. No-Load & Load Tests

• Measures core loss (no-load) and copper loss (load)

• Auto-calculates efficiency and voltage regulation

2. DC Resistance Tests

• Precision winding resistance measurement

• Identifies contact degradation or broken strands

3. Ratio & Vector Group Tests

• Verifies turns ratio accuracy

• Confirms phase displacement (Dyn11, YNd1, etc.)

4. Withstand Voltage Tests

• AC power frequency withstand voltage up to system-rated levels

• Timed tests with automatic trip on failure

Technical Advantages

• Error Reduction: Microcontroller-synchronized sampling eliminates manual meter reading mistakes

• Expandability: External CT interface for future capacity upgrades

• Efficiency: Single-platform solution replaces 4+ separate test devices

• Compliance Ready: Pre-configured test sequences meet GB standards

Typical Applications

• Transformer Manufacturers: Factory acceptance testing (FAT)

• Utilities: Preventive maintenance for grid transformers

• Industrial Plants: In-service transformer health checks

• Laboratories: R&D and quality validation

Why Choose LQHV-315?

• Time Savings: 70% faster than manual test setups

• Data Integrity: Digital recording eliminates transcription errors

• Future-Proof: Modular design supports additional test modules

• User Safety: Integrated protection circuits and alarms