Multi-functional Inductive Load DC Resistance Tester
Darui Electric recommends:
Product Introduction:
Multi-functional Inductive Load DC Resistance Tester, with a high-speed microcontroller as the core, adopts high-speed A/D converter and programmable current source technology, achieving * measurement effect and highly automated measurement functions, featuring high accuracy, stable data, good repeatability, strong anti-interference capability, complete protection functions, and fast charge/discharge speed. This instrument is small in size, light in weight, and easy to carry, making it a new generation product for on-site testing of transformer DC resistance.
Main Functions and Features:
1. Uses a 16-bit A/D converter, providing stable measurement data and good repeatability.
2. The automatic programmable current source can automatically detect the optimal measurement current, or manually switch to the required current level for testing.
3. Can automatically print test results.
4. All Chinese LCD display, high clarity, and easy operation.
Main Technical Specifications:
1. Resistance measurement range: 1mΩ to 100Ω, resolution: 1μΩ;
2. Accuracy of resistance, voltage, and current measurement: 0.2%±2 digits;
3. Current source output range: 0.1A to 10A; arbitrarily settable.
4. Maximum output power of current source: 100W;
5. Operating current: AC, 220V±10%;
6. Operating environment: ambient temperature: -10 to 40℃; humidity: ≤85% without condensation; altitude not exceeding 1500m, used in environments without harmful dust or gases.
7. Dimensions: 340×220×130 mm;
8. Weight: 6kg.
Precautions:
1. Before switching the tap changer of an unloaded voltage-regulating transformer, be sure to reset. Only after discharge is complete and the alarm sound stops, can you switch the tap position.
2. Before disconnecting wires, wait until discharge is complete and the alarm sound stops before proceeding.
3. When selecting the current for the Multi-functional Inductive Load DC Resistance Tester, refer to the range in the technical specifications section. Do not exceed the range or use under the range. If the range is exceeded, the current cannot reach the preset value, and the instrument will remain in the "charging" state. If under the range, "current too low" will be displayed. When either of these two states occurs, confirm the range and select an appropriate current for testing.
4. When using the magnetic assist method, pay attention to the range. Because the two high-voltage coils are connected in parallel and one in series, 1.5 times the high-voltage coil resistance is added to the entire test loop. When selecting the range, this must be taken into account. If the range is exceeded, the output current may not reach the set value or may be unstable.
5. After discharge is complete, when disconnecting the three wires of the magnetic assist method, there may be residual current, and spark discharge may occur during removal. This is normal.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
