Buried Distribution Transformer
Features:
S11-MD-underground distribution transformer core cold-rolled silicon steel miter joints using low-loss step-stack
from the system. High and low voltage coil using cylindrical and spiral wound structure. Transformer low voltage
side of the watertight box structure using high-pressure side of the head with waterproof cable products with
anti-pollution, water and strong, no-load current, low noise, low loss, low temperature characteristics, the
product can be charged continuously run for a certain time soaking advantages. Advanced technical indicators,
unique structure, exquisite appearance, is particularly suitable for a water environment such as underground
tunnels of a high-tech, high-performance energy-saving products.
The transformers can be buried underground in pits ,and can meet the needs of single ring high -voltage power
supply,applies to long distances but small loading system ,such as roads ,bridges,and tunnels.
Transformer Standard:
GB 16927-1997 high voltage test technology
GB 1094.1-1996 power transformer
GB 7328-1987 determination of sound level of transformer and reactor
GB / T6451-2008 technical parameters and requirements of three-phase oil immersed power transformer
GB 4208-2008 enclosure protection grade
JB / T501-2006 power transformer test guide
JB / T10544-2006 underground type transformer
Service Condition:
1) Altitude: ≤1, 000m
2) Maximal ambient temperature: +40.C
3) Maximal daily average temperature: +30.C
4) Maximal annual average temperature: +20.C
5) Minimal ambient temperature: -25.C
6) In the outdoor pit, in the tunnel wall pit
7)Pit operation conditions: meet the requirement that the water immersion is more than 1m above the top cover
of transformer, and the operation can reach 120 days
Note: According to user needs, four-position load switch can be added for ring network type geographic
transformers, and two-position load switch can be added for terminal buried transformers
Features:
A. The high-voltage incoming line adopts two (one in and one out) three-phase integrated plug-in high-voltage
cable connectors;
B. The low-voltage outgoing line adopts three-phase four wire integrated plug-in low-voltage electrical connector;
C. The high-voltage side is equipped with limited current fuse protection;
D. The enclosure adopts A3 steel and do protective treatment ;
E. The protection grade is IP68, which can be submerged in water for a period of time, It can reach 120 days;
F. when it is running in the pit, the rise limit meets the requirements of gb10944-1996.
Technical parameters:
Introduction of details:
Product reference:
Application:
Underground distribution transformer is a kind of transformer that can be installed in the pit and meet the needs of
high voltage power supply of single loop network. It is suitable for long-distance and small load high voltage output
systems such as roads, bridges, airports and tunnels.
Our Services
| 1. |
Pre sale service |
| a. |
make technical solution |
| b. |
send quotation, technical data sheet and drawing |
| c. |
prepare power transmission plan, testing plan and shipment plan |
| 2. |
In sale service |
| a. |
supervise the manufacturing schedule totally in accordance with the plan |
| b. |
send photos to customer during every manufacturing process(hold point) |
| c. |
inform the customer one week before testing. |
| 3. |
After sale service |
| a. |
installation and commissioning, training the workers |
| b. |
quick response within 12 hours any time |
| c. |
provide 12 months guarantee period normally. |
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