About the product
According to IEC and relevant national standards, the transformer ratio test is a mandatory item during the production, user handover, and maintenance testing of power transformers. This can effectively supervise the quality of transformer products during delivery and use, and prevent inter-turn short circuits, open circuits, connection errors, internal faults, or contact faults of voltage regulating switches.
Our company’s independently developed multi-functional handheld fully automatic transformer ratio tester meets the on-site usage requirements of users. It is easy to operate, has complete functions, stable and reliable data, and can perform blind testing (accurate measurement of transformer ratio and group number without knowing any nameplate parameters of the tested transformer), meeting the needs of various large, medium, and small transformer ratio testing.
Functional characteristics
- Wide testing range, with a maximum transformation ratio of 10000.
- Built-in three-phase digital power supply, fast testing speed, and high accuracy.
- Fast testing speed, complete three-phase testing within 10 seconds.
- Equipped with three-phase transformer, single-phase transformer, PT, Z-type transformer ratio, group, and polarity testing functions.
- It has the function of blind testing of variable ratios and groups.
- It has high- and low-voltage reverse connection protection and short-circuit protection functions.
- The instrument can switch between Chinese and English.
- The instrument adopts two power supply modes: AC and DC, with a built-in lithium battery pack or external AC220V power supply.
- It adopts a large touch true-color LCD display, with a fully Chinese graphical operation interface and Chinese character prompt information, multi-parameter display, and a friendly human-machine dialogue interface.
- It has a power-on clock and date display.
- The instrument is equipped with a built-in large-capacity memory, which ensures no data loss during power failure. The data can be saved on-site or to a USB flash drive.
- Adopting a handheld design, it is small in size, light in weight, and convenient to carry.
Technical parameters
Measurement range: 0.9~10000
Resolution: 0.0001 minimum
Accuracy: 0.2% (0.9-1000), 0.3% (1000-3000), 0.5% (3000-10000)
Output voltage: AC 80V
Instrument size: 255mm × 162mm × 70mm
Instrument weight: 1.37kg
Usage conditions
Environmental temperature:-10℃~50℃
Environmental humidity: ≤85%RH
Working power supply: AC220V or lithium battery power supply
Charging power supply: AC220V±10% 50Hz±1Hz
