The NRDZ-C transformer short-circuit impedance tester is suitable for low-voltage load impedance testing in power transformers (single-phase or three-phase) delivery, overhaul, pre-test and handover test. The principle is to test the short-circuit impedance of the power transformer on site and compare it with the nameplate value or factory value. It can find defects such as winding displacement and deformation caused by serious fault currents during transportation, installation and operation after the factory test.
Overview
Product characteristics
● The instrument uses AC220V low-voltage power supply which can automatically apply current to the AB BC and CA high-voltage windings of the transformer collect data synchronously and automatically calculate the impedance error percentage. The test results are very intuitive.
● One-time wiring three-phase test can be automatically completed without reversing the test line.
● The instrument can be used for single-phase test or three-phase test; it can be tested manually or automatically.
● With output current limiting function it is suitable for samples with any impedance.
● The test product can be measured without an external voltage regulator.
● It has the function of measuring zero sequence impedance.
● It has the function of measuring inductance.
● Large-screen LCD display the operation is very simple you can complete the operation according to the prompts on the screen.
● It has the functions of printing and storage; with the characteristics of high-test accuracy high level of automation small size and light weight.
| (1) | NRDZ-C Transformer Short-circuit Impedance Tester | 1 piece |
| (2) | Dedicated test wire | 1 set |
| (3) | Ground wire | 1 piece |
| (4) | Power wire | 1 piece |
| (5) | Fuse | 2 pieces |
| (6) | Printing paper | 1 piece |
| (7) | Operation manual | 1 copy |
| (8) | Factory test report | 1 copy |
| (9) | Warranty card | 1 copy |
Models
| Voltage measurement range | AC 10V～600V |
| Current measurement range | AC 0.1A～20A |
| Accuracy | 0.2level |
| Working temperature | -10℃～50℃ |
| Environmental humidity | ≤85% |
| Working power supply | AC220V±10% |
| Power frequency | 50Hz |
| Weight | around 6kg (not include accessories) |
