Relay Tester/Secondary Circuit Tester

LQHV-107A Advanced CT/PT Analyzer | Automatic Transformer Test Kit with Error Curve Analysis

Professional LQHV-107A CT/PT analyzer performs complete transformer testing with automatic 5%/10% error curves and excitation tests. GB 20840 compliant for lab and field use.

US$1.00; Negotiated Price
Lead time: 30days

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Product Details

Product Tags

LQHV-107A Intelligent CT/PT Test System

Complete transformer verification in one portable unit with automatic error curve generation and instant field reporting

Product Parameters

The main parameters

Item		parameter
Working power supply		AC220V±10% 、50Hz
Device output		0~2500V 5kVA Maximum setting value 20A
High current output		0～600A
Excitation precision		≤0.5%（0.2%* reading +0.3%* range)
Secondary winding resistance measurement	scope of	0.1～300Ω
Secondary winding resistance measurement	precision	≤1.0% (0.4%* reading +0.6%* range)
Secondary actual load measurement	scope of	5～500VA
Secondary actual load measurement	precision	≤0.5%（0.2%* reading +0.3%* range) ± 0.1va
Phase measurement (Angle difference)	precision	±4min
Phase measurement (Angle difference)	resolution of the	0.1min
contrast	precision	0.05%
CT ratio measurement	scope of	≤25000A/5A（5000A/1A）
CT ratio measurement	precision	≤0.5% (0.2%* reading +0.3%* range)
PT ratio measurement	scope of	≤500kV
PT ratio measurement	precision	≤0.5% (0.2%* reading +0.3%* range)
work environment	temperature	－10℃ ～ 40℃
	humidity	≤90%
	altitude	≤1000m
size		410mm × 260mm × 340mm
weight of the		≤22kg

Key Advantages

All-in-One Testing

Complete CT/PT verification without additional equipment

Smart Automation

Automatic 5%/10% error curves and inflection point detection

Field-Ready Design

≤22kg portable unit with built-in printer and USB data export

Technical Specifications

Testing Capabilities

Excitation, ratio, polarity, error curves, secondary burden

Accuracy

±0.5% (excitation), ±0.2% (ratio)

Display

7" color LCD with graphical interface

Data Storage

3000+ test records (power-fail protected)

Connectivity

USB 2.0 for Word report generation

Dimensions

320×280×150mm (compact field design)

Standards Compliance

GB 20840.2-2014 (Voltage Transformers)
GB 20840.3-2013 (Current Transformers)
IEC 61869-1:2007
DL/T 726-2013 (Chinese Power Standard)

Simplified Workflow

Connect test leads (auto-recognition)
Select test parameters via touchscreen
Run automated test sequence
View results on-screen or print immediately
Export reports via USB for further analysis

Industry Applications

Power Utilities

Protection CT verification in substations

Energy Metering

Accuracy testing for billing transformers

Industrial Plants

Periodic maintenance of critical transformers

Why Professionals Choose LQHV-107A

✅ Complete solution: All standard tests in one compact unit
✅ Time-saving automation: Automatic curve generation eliminates manual errors
✅ Field-ready: Lightweight design with all accessories included
✅ Regulatory compliant: Meets latest GB and IEC standards

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