HZ-3110 10A Portable Transformer Winding Resistance Test Equipment
HZ-3110 10A Portable Transformer Winding Resistance Test Equipment
Introduction
DC resistance testing is an essential procedure for transformer semi‑finished and finished product testing, installation, commissioning, and preventive maintenance of electrical components. This test effectively identifies issues such as poor welding, loose connections, missing strands, open circuits, manufacturing defects, and other hidden faults that may occur after operation.
Configuration
High‑Speed SCM Control: The entire instrument is controlled by a high‑speed single‑chip microcontroller, offering a high degree of automation and simple operation.
Advanced Power Supply Technology: Features multiple current ranges with a wide test range, suitable for measuring DC resistance in large and medium‑sized transformers.
Complete Circuit Protection: Comprehensive protection ensures reliable operation.
Discharge Alarm: Clear discharge indication with audible alarm reduces the risk of misoperation.
Fast Response: Direct conversion to load tap‑changer in measuring state; the instrument automatically refreshes data.
Intelligent Power Management: Always operates at minimum power consumption, effectively saving energy and reducing heat generation.
High‑Quality Display: 320 × 240 ultra‑small pixel 65K true‑color LCD.
Data Storage: Built‑in calendar clock and non‑volatile storage for up to 1000 data sets; data can be reviewed at any time.
Connectivity: RS232 and USB interfaces for computer communication and USB flash drive storage.
Technical Data
| Item | Specification |
| Output current | <5 mA, 40 mA, 200 mA, 1 A, 3 A, 10 A |
| Resolution | 0.1 μΩ |
| Measuring range | 0.5 mΩ～0.2 Ω (10 A) |
| 1 mΩ～3 Ω (3 A) | |
| 5 mΩ～6 Ω (1 A) | |
| 100 mΩ～40 Ω (200 mA) | |
| 1 Ω～200 Ω (40 mA) | |
| 100 Ω～20 kΩ (<5 mA) | |
| Accuracy | ±(0.2% + 2 digits) |
| Operating temperature | 0～40 ℃ |
| Ambient humidity | ≤90% RH (non-condensing) |
| Dimensions | 425 × 210 × 285 mm |
| Instrument weight | 11 kg |
Presentation Of The System
~220V：Power switch, machine power input, AC socket, safety and switch.
-：Earthed terminal,used for whole instrument earthing,for safety protection.
RST： machine restore the initial status,pre-set the current output.
Circle: select menu.
SEL：Setup the current after the tester was reset.
S-up key：press the key after selecting the current; The microcomputer control to realize all testing process.
I+, I-：Current output terminals ,I+ is the positive current; I- is the negative current.
V+,V-：Voltage input terminals, V+ is the positive voltage;V- is the negative voltage.
RS232: Universal series interface, can controlled by computer;
USB: Can output the testing results to USB.
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