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XHBB128B transformer turns ratio tester
Introduction
According to the preventive test regulations of the Ministry of
Electric Power, before a newly installed transformer is put into
operation, the production process of semi-finished and finished
power transformers requires testing the turns ratio or voltage
ratio of the operating transformer. This includes verifying the
correctness of the transformer turns ratio, the condition of the
tap changer, whether the transformer is short-circuited between
turns, and whether the transformer can be operated in parallel.
Traditional ratio bridges have non-intuitive readings and can only
perform conversions phase by phase. The XHBB128B transformer turns
ratio tester overcomes these limitations, offering easy and
intuitive operation. It uses a three-phase precision inverter power
supply, ensuring fast testing and high accuracy.
Features
1. The instrument uses a three-phase precision inverter power
supply instead of a single-phase mains power supply as the
measurement voltage, which eliminates the harmonic influence of the
mains voltage during measurement and makes the measurement more
accurate. When the working power source is a generator, it has no
effect.
2. The self-made precision three-phase inverter power supply is
adopted, which has high and low voltage reverse connection
protection, transformer inter-turn short circuit protection, tap
switch not in place protection, output full short circuit
protection, and increases the stability of the instrument.
3. Using 7-inch high-definition color touch screen LCD, modular
display, each operation step has Chinese prompts, no need for
manuals, just look at the LCD prompts to complete the instrument
operation.
4. The instrument has both print output, U disk interface, and
RS232 interface, which is convenient for paperless office.
5. It adopts multi-functional engineering plastic box that is
resistant to cold and temperature, is sealed and waterproof, and is
anti-drop and shock-proof, which is convenient for field
experiments.
Technical indicators
Test range | 0.9~10000 |
Measurement accuracy | ±0.1%+2 digits (0.9-500) ±0.2%+2 digits (501-2000) ±0.5%+2 words (2001-10000) |
Resolution | 0.0001 minimum |
Output voltage | automatically adjust according to load |
Power supply | AC220V±10% 50±1Hz |
Ambient temperature | -10ºC~40ºC |
Relative humidity | ≤85%, no condensation |
Dimensions | host: 360*290*170(mm) wire box: 360*290*170(mm) |
Weight | host 5.9KG wire box: 5.65KG |
Packing list
Product Details