33kv Outdoor Single-Phase Casting Resin Voltage Transformer
1. Transformer is also known as the utility Transformer, is the
current Transformer and voltage transformer collectively. Can turn
high voltage into low voltage, large current into small current,
used to measure or protect the system. Its main function is to
convert high or large current into standard low voltage(100V) or
standard small current(5A or 1A) in proportion so as to standardize
and miniaturize measuring instruments, protective equipment and
automatic control equipment.
2. At the same time, the transformer can also be used to separate
the high voltage system to ensure the safety of the person and
equipment. In power lines, the current difference from a few to a
few thousand, voltage difference from several volts to several
million volts. The current voltage in the line is high, so it is
very dangerous to measure directly.
3. To facilitate the conversion of the secondary instrument to a
uniform current voltage, the Transformer is used to change current
pressure and isolate electricity. The majority of products are
single-phase, because voltage transformer capacity, small body
accumulation, the inner and outer insulation between the
three-phase high-pressure casing is difficult to meet, so only
3-15kV products sometimes adopt three-phase structure.
Electromagnetic voltage transformer:
4. According to electromagnetic induction principle, the
transformation voltage is similar to the basic structure and
Transformer. The capacitive voltage Transformer is composed of
capacitive voltage divider, compensation reactor, intermediate
Transformer, damper and carrier protection gap, etc.. Photoelectric
voltage transformer: Through the principle of photoelectric
transformation to realize voltage transformation, is still under
development.
| Rate Voltage Ratio | Accuracy class | Insulation Level |
| 3000/100 | 0.2/0.5/1 | 12/42/75kV |
| 35000/100 | 0.2/0.5/1/3 | 40.5/95/200kV |
