Products Video
HMDQ HM5002 10A 20A DC Resistance Tester Description Video
Products Parameter
1. Output current: 10A, 5A, 1A, 100mA, 10mA, 1mA, automatic;
2. Range:
0.5mΩ～1.6Ω (10A gear)
20mΩ～3.2Ω (5A gear)
100mΩ～16Ω (1A gear)
16Ω～100Ω (100mA gear)
100Ω～2kΩ (10mA gear)
2kΩ～100kΩ (1mA gear)
3. Accuracy: ± (0.2%+2 characters);
4. Resolution: 0.1μΩ;
5. Working temperature: -20 to 40℃;
6. Ambient humidity: ≤80% RH, no condensation;
7. Altitude: ≤1,000m
8. Working power supply: AC220V±10% 50Hz±1Hz; 24VDC/6Ah lithium battery;
9. Dimension: 323*275*135mm;
10. Weight: 4.75kg.
Test and operation method
(I) Test wiring
A. Single-phase measurement method, see the figure below:
Figure 1
B. See Fig. 2 ~ 4 for the wiring of magnetic aid method (applicable to Y(N)-d-11 connection group).
Figure 2
Figure 3
For low-voltage side measurement of large-capacity transformers, the maximum current of the DC resistance tester is relatively small. Alternatively, to speed up the measurement process, magnetic-assisted measurement can be chosen. Figure 2, Figure 3 and Figure 4 above shows the wiring method for measuring low voltage Rac, Rba and Rcb respectively.
2. Instructions for functional operation:
(1) Main interface: turn on the power switch, start the instrument and enter the main menu. The interface displays four options: "Resistance Test", "Record Query", "Time Correction" and "System Settings". Select the corresponding option for operation according to the use condition. The startup interface is shown as follows:
(2)DC resistance test: Enter the main menu interface after startup, click the "Resistance Test" menu to enter the current selection interface as shown in the figure below. First check the range of each current gear, and then select the appropriate test current according to the actual size of the tested object. When the resistance value of the tested object is not clear, the Automatic Test can be selected, and the instrument will automatically select the appropriate output current for testing according to the resistance value of the tested object.
Click the required current gear, and the instrument executes the test command to enter the test interface. After the test current is charged stably, the LCD displays as shown in the figure below:
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