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XHTX1318 Series Transformer Characteristic Tester is a high-precision, dual-function diagnostic instrument that effectively serves as two instruments in one: a transformer capacity tester and a transformer characteristic parameter tester. Engineered for comprehensive transformer evaluation, it accurately measures multiple power frequency parameters across diverse transformer models — including capacity, type identification, no-load current, no-load loss, short-circuit (load) loss, impedance voltage, and vector group analysis. With ±0.2% measurement accuracy across voltage, current, and power parameters, it is the go-to instrument for power utilities, transformer manufacturers, and testing service providers who require reliable, repeatable transformer diagnostics in the field or laboratory.
Technical Specifications
Parameter
Specification
Measurement Inputs
Active Voltage Range
0–10 V
Active Current Range
0–10 A
Passive Voltage Range
0–750 V (wide range)
Passive Current Range
0–20 A – 100 A (internal dual range, auto/manual selection)
Measurement Accuracy
Voltage
±0.2%
Current
±0.2%
Power (Cosφ > 0.2)
±0.2%
Power (0.02 < Cosφ < 0.2)
±0.3%
Operating & Power
Operating Temperature
-25℃ to +65℃
Charging Power Supply
AC 160V–260V
Insulation
Input-to-Casing Resistance
≥ 100 MΩ
Power Input Withstand
2 kV (RMS) for 1 minute
Measured Parameters
Parameter
Description
Transformer Capacity
Accurate capacity determination and type identification for unknown or unlabeled transformers
No-Load Current
Excitation current measurement under rated voltage
No-Load Loss
Core loss measurement for efficiency evaluation
Short-Circuit / Load Loss
Copper loss measurement under rated current
Impedance Voltage
Percentage impedance determination for system coordination
Vector Group
Winding connection and phase displacement analysis
Key Performance Features
Dual-Function Integration — Combines transformer capacity testing and characteristic parameter measurement in a single instrument, eliminating the need to carry and manage two separate testers in the field.
High-Precision ±0.2% Accuracy — Class-leading measurement accuracy across voltage, current, and power parameters (Cosφ > 0.2), with ±0.3% even at very low power factors (0.02–0.2), ensuring reliable data for transformer acceptance, diagnostics, and energy efficiency verification.
Wide-Range Passive Measurement — Passive voltage inputs up to 750V and dual-range current inputs (0–20A / 0–100A) with automatic or manual range selection accommodate the full spectrum of distribution and power transformers without external PT/CT accessories.
Extreme Environment Tolerance — Operating temperature range of -25℃ to +65℃ enables deployment in harsh outdoor substation environments from arctic cold to desert heat, with charging power supply compatibility from 160V to 260V for reliable operation on generator or unstable grid supplies.
Robust Insulation Design — ≥100 MΩ input-to-casing insulation resistance and 2kV power input withstand capability ensure operator safety and measurement integrity in high-voltage substation environments.
Comprehensive Transformer Diagnostics — Measures all key power frequency parameters in a single test sequence: capacity, type, no-load current, no-load loss, load loss, impedance voltage, and vector group — providing a complete transformer health profile for condition assessment, acceptance testing, and energy auditing.
Application Areas
Sector
Typical Applications
Power Systems
Generation, transmission, transformation, and distribution transformer testing
Industrial Plants & Mining
Large-scale manufacturing, mining operations, and heavy industry transformer diagnostics
Metallurgy & Petrochemical
Smelting, chemical processing, water treatment facility transformer evaluation
Transportation Infrastructure
Ports, railways, highways, airports, and municipal street lighting power systems
Commercial & Institutional
Large enterprises, logistics centers, and institutional facility management
Construction & Property
Large construction projects and property management transformer commissioning
Testing & Commissioning
Power installation and commissioning service providers
Product Image
Important Safety Note
If any abnormal situation or malfunction is observed with the instrument, do not attempt to open or disassemble it. Contact our company promptly for appropriate service arrangements.
Frequently Asked Questions
Q1: Is this tester suitable for transformer manufacturing factory acceptance testing (FAT)?
Yes, the XHTX1318 is purpose-built for transformer manufacturing quality control. Its ±0.2% accuracy class meets the stringent measurement requirements of factory acceptance testing for both distribution and power transformers. The dual-function design enables manufacturers to verify both rated capacity compliance and key performance parameters — no-load loss, load loss, impedance voltage, and vector group — in a single instrument setup. This eliminates the need for multiple specialized testers on the production line, reducing capital investment, calibration maintenance, and operator training requirements in the QC department.
Q2: Can power utility asset management teams use this for transformer condition assessment?
Absolutely. Utility asset managers making replacement, refurbishment, or load-upgrading decisions need reliable, accurate transformer performance data. The XHTX1318 provides comprehensive condition assessment: no-load loss trends indicate core degradation, load loss increases signal winding deterioration, and impedance voltage shifts can reveal mechanical deformation. Its wide operating temperature range (-25℃ to +65℃) enables year-round field testing across all climate zones, and the dual-range current inputs (up to 100A) accommodate everything from small distribution transformers to large power transformers without external accessories.
Q3: How does it serve transformer refurbishment and retrofitting companies?
Transformer refurbishment companies that rewind, repair, and upgrade existing transformers need to verify that the rebuilt unit meets original or upgraded specifications before returning it to service. The XHTX1318’s vector group analysis capability is particularly valuable here — verifying correct winding connections after rewinding — while the capacity and loss measurements provide documented proof that the refurbished transformer meets its nameplate ratings. The instrument’s ability to measure unknown or unlabeled transformer capacity is also essential when assessing incoming cores for potential upgrade paths.
Q4: Is it appropriate for energy audit and efficiency consulting firms?
Energy efficiency consultants conducting ISO 50001 audits and industrial energy assessments need precise transformer loss data to calculate energy savings opportunities and ROI for replacement or load optimization recommendations. The XHTX1318’s ±0.2% accuracy on power measurements (even at the low power factors typical of no-load transformer testing) provides the measurement rigor required for defensible energy audit reports. The ability to test across both active (0–10V/0–10A) and passive (0–750V/0–100A) ranges means consultants can assess transformers while they remain in-situ, minimizing production disruption at client facilities.
Q5: Can electrical engineering design institutes use this for tender evaluation and commissioning?
Design institutes and engineering consultancies responsible for specifying transformers in tender documents and verifying supplied equipment during commissioning need measurement tools that can independently validate manufacturer claims. The XHTX1318’s comprehensive parameter coverage — capacity, type, no-load and load losses, impedance voltage, and vector group — enables design engineers to cross-check every key specification item against the approved datasheet. Its ±0.2% accuracy provides the measurement confidence needed for formal commissioning reports and dispute resolution when supplied equipment performance is questioned.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2013
Total Annual:
1000000-5000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd.
Has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical...
Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd.
Has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical...
