UT620F Three Channel DC Resistance Tester
UT620F three channel DC resistance tester, also known as DC resistance measuring instrument or transformer DC resistance tester. With a high-speed microcontroller as the core and the use of high-speed A/D converters and programmable current source technology, unprecedented measurement results and highly automated measurement functions have been achieved. It has high accuracy, wide measurement range, stable data, good repeatability, and strong anti-interference ability
Product Details
UT620F three channel DC resistance tester, also known as DC resistance measuring instrument or transformer DC resistance tester. With a high-speed microcontroller as the core and the use of high-speed A/D converters and programmable current source technology, unprecedented measurement results and highly automated measurement functions have been achieved. It has high accuracy, wide measurement range, stable data, good repeatability, and strong anti-interference ability
Function
Test current 0.2A, 0.5A, 2A, 5A, 10A, 20A (6-speed setting)
Test materials: Cu copper, Al aluminum, Fe iron, Au gold, Ag silver materials are optional
Multiple measurement modes (three-phase, single-phase, multi wire, single wire, zero wire resistance measurement)
Measurement range: 0.1u Ω~5000 Ω, resolution 0.1u Ω
Converted temperature: (can be set to -40 ℃~150 ℃) Measurement results
Measurement methods (four wire test, magnetic assisted test)
USB interface communication and USB disk copying to save data
7-inch touch color screen
Backlight (adjustable backlight brightness)
Manually set Beijing time
Automatic discharge and overload protection
Equipped with a built-in thermal printer
Power supply AC 220V 10A (50Hz)
FAQ
Q: What is UNI-T UT620F used for?
A: It is a 3-channel DC resistance micro ohmmeter, mainly for transformer winding resistance test, power distribution cabinet and electrical equipment resistance inspection.
Q: What is the advantage of 3-channel test?
A: It can test three-phase windings synchronously, greatly improve efficiency for transformer routine test.
Q: Why use four-wire measurement?
A: Four-wire method eliminates the resistance of test cables and contact resistance, guarantee accurate micro-ohm readings.
Q: Does it support on-site printing?
A: Yes, built-in thermal printer, you can print test reports directly on site.
Q: Can I export the measurement data?
A: Yes, store up to 500 groups, export via USB or U-disk for PC analysis and archiving.
Q: What safety protection does it have?
A: Auto discharge after measurement and overload protection, prevent electric shock and equipment damage for field operation.
Function | Range | Resolution | Accuracy |
|---|---|---|---|
DC Resistance | 0.1000 mΩ ~ 1.0000 mΩ | 0.1 μΩ | ±0.2%FS ±10 dgt |
DC Resistance | 1.000 mΩ ~ 10.000 mΩ | 0.001 mΩ | ±0.2%FS ±10 dgt |
DC Resistance | 10.00 mΩ ~ 100.00 mΩ | 0.01 mΩ | ±0.2%FS ±10 dgt |
DC Resistance | 100.0 mΩ ~ 1000.0 mΩ | 0.1 mΩ | ±0.2%FS ±10 dgt |
DC Resistance | 1.000 Ω ~ 10.000 Ω | 0.001 Ω | ±0.25%FS ±15 dgt |
DC Resistance | 10.00 Ω ~ 100.00 Ω | 0.01 Ω | ±0.25%FS ±15 dgt |
DC Resistance | 100.0 Ω ~ 1000.0 Ω | 0.1 Ω | ±0.25%FS ±15 dgt |
DC Resistance | 1000 Ω ~ 5000 Ω | 1 Ω | ±0.3%FS ±20 dgt |
Test Object | Transformer DC resistance | — | — |
Accuracy Guarantee Condition | 22±5℃, 50～70%RH | — | — |
Power Supply | AC 220V, 10A, 50Hz | — | — |
Measurement Method | 4-wire test | — | — |
Rated Power | 1200W | — | — |
Backlight | Adjustable brightness | — | — |
Short-circuit Current | 0.2A / 0.5A / 2A / 5A / 10A / 20A (6 gears) | — | — |
Max Short-circuit Current | DC 20A ±10% | — | — |
Auto Discharge | Yes | — | — |
USB Flash Disk Port | Support data copy & save | — | — |
USB Interface | Connect PC software for data check | — | — |
Measurement Indicator | Real-time progress display | — | — |
Overload Protection | Yes | — | — |
Max Open Circuit Voltage | DC 25V ±15% | — | — |
LCD | 7-inch color touch screen | — | — |
Touch Screen | Yes | — | — |
Dimension | 400mm × 300mm × 210mm | — | — |
Standard Test Leads | 8 pcs | — | — |
Printer | Built-in thermal printer | — | — |
Printer Paper | 57*40mm | — | — |
Data Storage | 500 sets | — | — |
Data Review | Supported | — | — |
Over-range Indication | "OL" overflow symbol | — | — |
Power Consumption | Standby: <110W; Measuring: ≤1500W | — | — |
Weight | 7 kg | — | — |
Operating Temp & Humidity | -10℃～40℃; ≤80%RH | — | — |
Storage Temp & Humidity | -20℃～60℃; ≤70%RH | — | — |
Insulation Resistance | ≥10MΩ (500V between circuit and housing) | — | — |
Withstand Voltage | AC 3700V/RMS (circuit to housing) | — | — |
EMC | IEC61010-4-3, RF field ≤1V/m | — | — |
Safety Standard | IEC61010-1, IEC61010-2-31, IEC61557-1,5, IEC60529 (IP54), Pollution Degree 2, CAT Ⅲ 300V | — | — |
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