Add to Cart
In the production process of semi-finished and finished power
transformers, before the newly installed transformer is put into
operation and according to the preventive test regulations of the
Ministry of Electric Power, it is required to test the turns ratio
or voltage ratio of the operating transformer, and the transformer
turns ratio can be checked. The correctness, the condition of the
tap changer, whether the transformer is short-circuited between
turns, whether the transformer can be operated in parallel. The
reading of the traditional ratio bridge is not intuitive, and the
conversion can only be carried out phase by phase.
This XHBB128B transformer turns ratio tester overcomes the shortcomings of traditional transformation ratio
bridge testing. It is easy and intuitive to operate. It adopts
three-phase precision inverter power supply, which has fast testing
and high accuracy.
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. Adopt three-phase output voltage, improve the test speed,
measure the angle between phases, and automatically identify the
transformer wiring group 0-11.
3. It is suitable for a wide variety of transformers, especially
for the measurement of Z-type transformers, rectifier transformers,
ground transformers, electric furnace transformers, phase-shift
transformers, balance transformers, etc. The measurement parameters
are the most comprehensive.
4. 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.
5. After inputting the rated parameters, the transformer ratio,
error value and tap position of the tap changer can be
automatically measured, especially for the tap changer with
asymmetrical taps, the exact position of the transformer tap
changer can also be accurately measured. A tap changer capable of
measuring 99 tap points.
6. 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.
7. The instrument has both print output, U disk interface, and
RS232 interface, which is convenient for paperless office.
8. 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.
1. Test range: 0.9~10000
2. Measurement accuracy: ±0.1%+2 digits (0.9-500)
±0.2%+2 digits (501-2000)
±0.5%+2 words (2001-10000)
3. Resolution: 0.0001 minimum
4. Output voltage: automatically adjust according to load
5. Power supply: AC220V±10% 50±1Hz
6. Ambient temperature: -10ºC~40ºC
7. Relative humidity: ≤85%, no condensation
8. Dimensions; host: 360*290*170(mm) wire box: 360*290*170(mm)
9. Weight: host 5.9KG wire box: 5.65KG
Packaging: Wooden case filled with foam
Shipping: by Air, Sea, Express, etc.
Shipping time: 7-15 days if it's in stock.