2015年10月31日星期六

In addition to standard mounting pole transformer which should meet?

conventional pole transformer is the transformer erected on poles, with the iron frame support, called pole transformer. our Farady transformer   installed in addition to satisfying the need to meet mandatory standards outside:. a pole transformer and high voltage insulators, high voltage isolation switch, fell Fuse, lightning arrester must be required to transfer test pass. . b pole low-voltage electrical equipment distribution box and feeder circuits over test shall meet the following requirements: Each distribution switchgear and protection equipment specifications, models, should meet the design requirements; white and insulation resistance value between opposite should Great 0.5MΩ; AC frequency voltage electrical installations work using voltage 1KV, test duration 1min, no breakdown flicker.

2015年10月28日星期三

The Performance &Feature of oil immersed transformer

The Performance &Feature of oil immersed transformer
a, Farady oil immersed transformer low-voltage windings except for small-capacity copper wire, generally used copper foil around the pumping cylinder structure; high voltage winding cylindrical multi-layer structure, so that the winding ampere-turns of the distribution of the balance, magnetic flux leakage small, high mechanical strength, resistance to short-circuit capacity.
b, core and windings each adopted tightening measures, the fastening portion is tall, with a low-voltage wiring, etc. are self-locking lock nut, using a no hanging heart structure can withstand transportation Britain earthquake.
c, the coil and the core by vacuum drying, 100kva oil transformer vacuum oil filter and oil filling process, the moisture inside the transformer to a minimum.
d, the tank using a corrugated sheet having respiratory function to compensate for temperature changes caused by changes in oil volume, so that the product does not conservator, apparently reducing the height of the transformer.
e, due to replace the conservator the corrugated sheets, transformer oil and the outside world, thus effectively preventing oxygen, moisture into the insulation and cause performance degradation.
f, according to the performance of the above five points, to ensure that the oil-immersed transformer oil change is not required in the normal operation, greatly reducing the maintenance cost of the transformer, while extending the life of the transformer.

2015年10月24日星期六

Single-phase distribution transformer installation site selection

Installation: single-phase distribution transformers can be single pole hanging installation way, poles selection 12 m or 15 m heavy cement pole cement pole.
Installation site selection: After investigation, we found that a single phase step voltage regulators site by fewer geographical constraints, load factors more nature. normally:
When the power supply of three-phase distribution transformers radius is too large, resulting in the low end of the supply voltage, and influence the normal use of electricity, at the end of the installation of power and distribution transformer manufacturer, cutting low voltage network, shortening the low voltage power supply radius, to resolve user voltage bias low problem;
When the overload when the three-phase distribution transformers, according to the load characteristics, select the appropriate branch of single-phase distribution transformers installed, cutting the transfer of load, capacity increase to resolve the issue;

2015年10月21日星期三

Power transformer manufacturer

When 50 kva pole mount transformer, test voltage There are several methods of measurement?
(1) Low-voltage measuring transformers in the test 500kva power transformer;
(2) measuring the voltage transformer;
(3) with high voltage electrostatic voltage measurement;
(4) Measure the clearance with the ball;
(5) with a capacitive voltage divider measurement.
(6) Farady oil immersed transformer connection Group Using Y yn0 and D yn11 coupling characteristics

2015年10月17日星期六

50 kva pole mount transformer

1, Distribution Transformer position should be set at or near the load center for easy replacement and maintenance of equipment location.
2, the poles should be installed below the transformer:
2.1, corner, pole branch office.
2.2, has received the head of the family line or cable poles.
2.3, equipped with a branch line shunt switch device poles.
2.4, the intersection of the poles.
2.5, low-voltage line connected households more poles.
2.6, easily accessible personnel or personnel-intensive area of ​​the pole.
2.7, there are lots of serious foul pole.
3, the bottom of the pole-mounted transformer height from the ground, not less than 2.5 meters. Its live parts, should be considered the ambient conditions.
4, deflectors transformers,three phase pad mounted transformer lead on the line and bus should adopt multi-strand insulated copper wire, cross-section shall be transformer rated current selection, and not less than 16 mm2. A transformer secondary side should be installed to adapt the electrical equipment. One side of the fuse installed perpendicular distance of not less than 4.5 meters.Farady conventional pole transformer Secondary fuse or circuit breaker installed perpendicular distance of not less than 3.5 meters. Each phase fuse horizontal distance: One side should not be less than 0.5 m, the secondary side of not less than 0.3 meters.

2015年10月13日星期二

50 kva pole mount transformer

Farady 50kva power transformer rated temperature: transformer nominal temperature is ambient temperature of + 40 ℃ for reference, provisions allowing the transformer in operation temperature exceeds the reference temperature,single phase pole mounted transformer the maximum temperature rise. National standard, winding temperature rise limits of 65 ℃, the oil temperature upper limit is 55 ℃, in order to ensure that the transformer top oil temperature does not exceed 95 ℃.Economic operation of transformer 50KVA transformer economic operation: three phase pad mounted transformer refers to loss of the transformer smallest, most efficient operating mode. Because when copper loss and iron loss of the transformer are equal, to achieve maximum efficiency of the transformer, usually associated with this as a basis for economic operation of transformer.

2015年10月9日星期五

Conventional pole transformer

Most lights are single-phase power supply,polemounted transformer which is a street of single-phase power supply will be able to meet the requirements, so the street transformer mostly use single-phase transformer, Farady oil immersed transformer load 50KW of energy with lights.
If you can meet the requirements of the secondary voltage, three-phase transformer can load with lights, but this time we are using a single-phase, three-phase 50KVA transformer so only with lights load 50 / 3KW = 16.67KW of.


Prospects dry-type transformers


Dry-type transformers have developed rapidly over the world, the time to be traced back to the late 20th century, so far only half a century. With the development of China's modernization, and rural power grid load is increasing. The 1990s, dry-type transformers can be widely applied in our country. With the pace of large urban and rural power grid construction and transformation of the western development to accelerate, the success of Beijing's bid for the 2008 Olympic Games, the Three Gorges water conservancy project starts generating power, dry-type transformers are facing new opportunities for development, production and sales which will have a new leap forward.

Recently, articles on dry-type transformers trends seen in various newspapers, the study of technology, process of discussion of the development of dry-type transformers are very useful. In this way, we also talk about some of the views.

With dry-type transformers continuous innovation in our country and promote the use of a large number of domestic design and manufacturing technology has reached world-class level, the future of dry-type transformers are expected to gain further development.
Our losses in the manufacturing and research and energy saving transformer noise, has made gratifying achievements, with a high level. However, environmental protection is the eternal subject of transformer research and development, there are many issues worthy of study. The introduction and development of low-loss silicon steel, in-depth step ladder laminated core seams, foil winding structure, noise studies, environmental requirements, computer optimized design, new materials, new processes, new technology will enable future dry more energy-efficient transformers more quiet. However, simply relying on material inputs to reduce iron loss or copper loss, or noise, we believe that are not desirable.