Dry type transformer
SCB Dry Type power transformer
The reel core fully sealed distribution transformer is a new
generation of low noise and low loss transformer developed in
recent years. Its iron core has no joint, greatly reduces the
no-load loss and no-load current, reduces the no-load current by
60%~80%, the high and low coils are continuously coiled on the core
column, the winding is tight, the concentricity is good, and the
product is enhanced more. Anti-theft performance. The noise
decreased by more than 10 decibels. The temperature rise is low
16-20K. Because of the continuous winding of iron core (cross
section is pure circle), the orientation loss of silicon steel
sheet is fully utilized, and the no-load loss is reduced by
20%~30%.
The low voltage winding with capacity in the 630~2500kVA enclosure
is made of cylinder or spiral structure with high mechanical
strength and balanced ampere distribution. The product has good
short circuit resistance.
The positioning structure is added to the body so that it does not
produce displacement during the transportation process, and all
fasteners are equipped with fastener nuts to ensure that the
fasteners are not loose during the long run of the product and meet
the requirements of the non core lifting.
The product surface is painted, primed and topcoat after
degreasing, rust removing and phosphating. It can meet the special
requirements of metallurgy, petrochemical system and wet dirty
area.This series of products has beautiful appearance, small size,
and can reduce the installation area. It is an ideal free
maintenance quality product.
Structural Characteristics:
Cast-foil Coil:
Adopting the entire section of copper foil, together with the
F-class turn insulation, low voltage winding is wound by the
special low-voltage foil winding machine. The foil coil resolves
such understanding problems as large short-circuit stress, uneven
ampere turn, poor heat dissipation, existing the winding spiral
angle as well as unsteady manual welding quality due to low voltage
and large current coil winding products. At the same time, the
winding end in our company is treated with resin potting,
solidification to make shape, moisture-proof and anti-fouling, the
lead copper platoon is automatically welded by argon arc welding.
Temperature Control Device:
the transformer adopts BWDK series of signal thermometer. The
temperature components, are embedded in the upper half of the
low-voltage coil, can automatically detect and dynamically display
the work humidity of phase coils and also have the functions of
over-temperature alarm and trip.
Technical data
| Type | Rated capacity (KVA) | Connection groupgrade | Voltagecombination(KV) | Noloadloss (W) | loadloss(W) DyYy | No-load current(%) | Short-circuit resistance(%) |
| HighvoltageTappingrang | eLowvoltage |
| SC12-30 | 30 | YynO . Dyn11 | 10 6.3 6 | 土5% +2x2.5% +x2.5% | 0.4 | 150 | 710 | 2.3 | 4.0 |
| SC12-50 | 50 | 215 | 1000 | 2.2 |
| SC12-80 | 80 | 295 | 1380 | 1.7 |
| SC12-100 | 100 | 320 | 1570 | 1.7 |
| SC12-125 | 125 | 375 | 1850 | 1.5 |
| SC(B)12-160 | 160 | 430 | 2130 | 1.5 |
| SC(B)12-200 | 200 | 495 | 2530 | 1.3 |
| SC(B)12-250 | 250 | 575 | 2760 | 1.3 |
| SC(B)12-315 | 315 | 705 | 3470 | 1.1 |
| SC(B)12--400 | 400 | 785 | 3990 | 1.1 |
| SC(B)12-500 | 500 | 930 | 4880 | 1.1 |
| SC(B)12-630 | 630 | 1070 | 5880 | 0.9 |
| SC(B)12-630 | 630 | 1040 | 5960 | 0.9 | |
| SC(B)12-800 | 800 | 1215 | 6960 | 0.9 |
| SC(B)12-1000 | 1000 | 1415 | 8130 | 0.9 |
| SC(B)12-1250 | 1250 | 1670 | 9690 | 0.9 |
| SC(B)12-1600 | 1600 | 1960 | 11730 | 0.9 |
| SC(B)12-2000 | 2000 | 2440 | 14450 | 0.7 |
| SC(B)12-2500 | 2500 | 2880 | 17170 | 0.7 |
Product details
Low loss:the product no-load loss is 20% lower than the Sc (B) 11 type
product with an
excellent energysaving effect, economic efficient operation and
without maintenance.
Low noise:the product noise level is 10-15 db lower than the existing
professional standard
JB/T10088- 2004Sound Level of 6- -220KV Transformer
Low partial discharge:resin mixture adopts foreign leading-edge mixing method and film
type
vacuumdeaerator to evenly mix the mixture and remove the bubble in
the bottom part of mixture.
The product hasa low partial discharge which can be controlled at
5PC. Both high voltage and low
voltage coils can bepoured in vacuum pressure so as to enable a
encapsulating of resin insulation
and immersion amonglayers and inter-tums. The poured part has a
compact solidity staicture with
anti-flaming, anti explosionand environmental protection features.
Glass fiber and other raw materials of winding coil have self-
extinguishing property and will not
producearc due to short circuit. Resin will not produce harmful gas
under high temperature.
Points to note
1.working condition
* Device types: indoor type
* Normal environment conditions of use: the elevation not more than
1000 m
* Environmental highest temperature + 40℃, minimum-25 ℃
* The special environment conditions of use: elevation of more than
1000 m
* Environmental highest temperature + 40 ℃, minimum-45 ℃. (when you
order details)
* Mounting ambicnt: no corrosive gas, no obvious dirt environment
2.applicable standard
* IEC60076 power transformer
* IEC723 dry power transformer
* GB6450-1986 dry power transformer
* GB/R1094-1996 power transformer
* GB4208-1993 outer shell protect grade(IP code)
Qualification Centre
All products of the company have passed the national type test like
CCC, CQC , CTQC and other
national mandatory product certification, and has a perfect
quality, occupational health and
environmental management system certification system. Our products
have passed ISO9001, 2000
and other international quality system certification.
SCOPE of application
None of the dry-type transformers we see today are installed in a
separate, tightly enclosed room, as in
the oil-immersed type, but only in a relatively dry and clean room.
In addition to this, it is also very convenient
to transport or carry, no matter what kind of transport vehicles,
trains, cars or other non-motor vehicles can be,
but it is best to keep the car dry, clean and the product itself in
good packaging. Practice has proved that really
good products will always be more and more marketable. As dry-type
transformers have very good fire-proof
performance and are easy to install and maintain, they are also
used more and more widely Especially in the
modern commercial downtown, residential areas, hospitals, airports,
stations, subways, theaters, schools,
public places and other places with high requirements on fire
protection.
