Handheld Transformer DC Resistance Tester| XHZ1010SC Product Overview
The XHZ1010SC Handheld DC Resistance Tester is an essential tool for transformer testing scenarios, including factory tests for semi-finished and finished products, installation, maintenance, tap changer changes, commissioning, and preventive checks by power sectors. It validates winding joint welds, detects inter-turn short circuits, ensures proper contact of voltage tap changers, checks for broken lead wires, and identifies strand damage in multi-strand windings. Powered by state-of-the-art power supply technology, it boasts a compact, lightweight design, high output current, consistent performance, robust anti-interference, and full protection features. Driven by a high-speed MCU, it offers full automation with automatic discharge and alarm functions, combining precise testing with user-friendly touchscreen operation for quick and reliable transformer DC resistance measurement.
Technical Parameters
| Parameter |
Specification |
| Model |
XHZ1010SC |
| Measurement Range |
0.5mΩ ~ 50kΩ (six ranges) |
| Range Details |
100Ω-50kΩ / 1Ω-200Ω / 100mΩ-50Ω / 10mΩ-10Ω / 5mΩ-3Ω / 0.5mΩ-0.2Ω |
| Accuracy |
±(0.2% + 2 digits) / ±(0.5% + 2 digits) |
| Power Supply |
Two selectable modes: lithium battery / AC mains |
| Operation |
Touchscreen operation |
| Display |
Digital display |
| Discharge |
Automatic discharge with alarm |
| Protection |
Back EMF (reverse electromotive force) protection |
Key Features
Two selectable power supply modes solve the problem of on-site testing being impossible due to lack of mains power
Automatically completes self-calibration, current stabilization judgment, data processing, and resistance display
Longitudinal testing of DC resistance of on-load tap-changing transformers can be completed with a single power supply
Comprehensive back EMF protection with fast measurement speed and accurate, stable data
High-speed MCU control with full automation, automatic discharge, and alarm functions
Simple operation, high precision, anti-interference, shock resistance, and portability
Application Scenarios
Power systems: power generation, transmission, transformation, and distribution
Factories and mines: large-scale manufacturing plants and various mining companies
Metallurgy and petrochemicals: smelting, chemical processing, water treatment
Transportation: ports, railways, highways, airports, and municipal streetlights
Enterprises and institutions: logistics departments of large enterprises
Construction industry: large construction and property management companies
Power installation and testing: power installation and commissioning companies of all levels
Intended Users
Designed for on-site commissioning engineers, power installation and commissioning companies, and field service technicians who need an ultra-portable, battery-powered DC resistance tester for transformer testing where mains power is unavailable. With lithium battery operation, a handheld form factor, and longitudinal testing of on-load tap-changing transformers in a single pass, it is tailored for rapid field measurement of transformers and tap changers during installation, commissioning, and emergency maintenance. Unlike benchtop touch-screen models for laboratories or magnetization models for large transformer rapid testing, this model emphasizes battery mobility, one-pass on-load tap changer testing, and rugged shock resistance for demanding field environments.
Safety Notes
Wait until the discharge is complete and the warning sound stops before disconnecting the wires, otherwise it may be dangerous.
When measuring a no-load tap-changing transformer, always reset and discharge before switching taps; switch taps only after the warning sound stops.
FAQ
Q1: What are the two power supply modes?A: It supports both lithium battery and AC mains power, so testing can proceed on-site even without an external power supply.
Q2: Can it test on-load tap-changing transformers?A: Yes, it can complete longitudinal DC resistance testing of on-load tap-changing transformers with a single power supply, saving time and improving efficiency.
Q3: What is the measurement range and accuracy?A: It covers 0.5mΩ to 50kΩ across six ranges, with accuracy of ±(0.2% + 2 digits) or ±(0.5% + 2 digits).
Q4: What safety features are included?A: It provides comprehensive back EMF protection and automatic discharge with an alarm to ensure safe operation.
Q5: How portable is this tester?A: It is a handheld, lithium battery powered tester with a compact, lightweight design and shock resistance, ideal for field use.
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