Procurement personnel often ask: for circuit breaker loop resistance testing, how much output voltage is sufficient? The DYL-200C Loop Resistance Tester has a maximum output voltage of 10V, which is 2 to 3 times that of conventional instruments. This parameter means that thinner test leads can be used on site, ensuring stable current output while reducing test lead weight and easing the workload of high-altitude wiring and long-distance cabling. The device has a 200A output current range, suitable for low-resistance measurement scenarios such as switch contact resistance and busbar connection resistance.
The test process is automatically implemented by single-chip control, from current output and data acquisition to result display, without the need for manual potentiometer adjustment or range switching. A single-button operation completes one measurement, and the test data is displayed on an LCD screen for easy on-site recording. The instrument has repeat test consistency, maintaining stable data for multiple measurements at the same test point, suitable for data comparison in maintenance records and handover acceptance.
When comparing loop resistance testers, procurement personnel can focus on verifying the following items: whether the output current range covers the rated current of the equipment under test; whether the maximum output voltage meets the on-site test lead length requirements; whether the display method supports reading in nighttime or strong light environments; whether the operation steps are simplified enough for one person to complete. The DYL-200C is designed for the 200A current level, suitable for scenarios such as switch manufacturing, substation maintenance, and electrical testing teams.
The instrument should be connected to the circuit under test after power-off, voltage verification, and discharge, and the test lead clamps must make reliable contact with the terminals. For long-term storage, it should be placed in a dry and ventilated place, and periodically powered on to check the LCD display and key response. For specific ranges, accuracy, and working conditions, refer to the accompanying manual.
