Introduction
The UHV-300 CT PT Tester is used for testing both current transformers (CT) and voltage transformers (VT). It performs key measurements such as the excitation characteristics and excitation parameters of instrument transformers. Additionally, it is capable of conducting turns ratio tests, polarity checks, and winding resistance measurements on transformer coils. Specifically for voltage transformers, it is employed for excitation characteristic testing, PT turns ratio verification, and PT polarity inspection.
The main parameters
| Usage | Protection CT, protection PT |
| Output | 0～180Vrms，12Arms，18A(Peak) |
| Voltage measurement accuracy | ±0.2% |
| CT ratio measurement | Range：1～40000 |
| Accuracy: ±0.2% ±0.05% (customizable) | |
| PT ratio measurement | Range：1～40000 |
| accuracy：±0.2% | |
| Phase measurement | The resolution of the：0.5min |
| accuracy：±5min | |
| Secondary winding resistance measurement | Range：0～300Ω |
| accuracy：2%±2mΩ | |
| AC load measurement | Range：0～300VA |
| accuracy：2%±0.2VA | |
| power supply | AC220V±10%，50Hz |
| Working environment | Temperature: -10℃ ~ 50℃, humidity: ≤90% |
| Dimensions and weight | size：340mm×220mm×330m，The weight of the：≤9kg |
Characteristics
1、Full-featured, not only satisfy the test requirements of various CTs (include TP class), such as the excitation characteristics (i.e., volt-ampere characteristics), ratio, polarity, secondary winding resistance, secondary burden, ratio error and phase displacement, but can also be used for the tests of various PTs, including excitation characteristics of the electromagnetic unit, ratio, polarity, secondary winding resistance, ratio error and phase displacement.
2、 Automatically give CT, VT parameters, including knee point voltage / current, 10% error curve, the accuracy limit factor (ALF), instrument security factor (FS), the second time constant (Ts), remanence coefficient (Kr), saturated and unsaturated inductance etc.
3、Test meet IEC60044 GB1208 (-1) GB16847 (IEC60044-6) became etc all kinds of transformer standards, and in accordance with the transformer types and levels of automatic choose which standard test.
4、Based on the advanced low-frequency method to test principle of, it can deal with CT test with inflection point up to 30kV.
5、Interface friendly and beautiful, Chinese graphics interface.
6、The device can store 2000 sets of test data without loss when power is lost.After the test, use U disk to store it on the PC, analyze the data with the software, and generate WORD report.
7、The test is simple and convenient. The direct resistance, excitation, ratio change and polarity tests of CT are completed with one key. Besides the load test, all other tests of CT adopt the same wiring mode.
8、Easy to carry, device weight<9kg.
