Advantages of American box change
Advantages: small size, small area, easy to place, easy to
camouflage, easy to coordinate with the environment of the
community. The length of low-voltage cables can be shortened, the
line loss can be reduced, and the cost of power supply matching can
be reduced.
The main features of American box change:
Strong overload capacity, allowing overload 2 times 2 hours,
overload 1.6 times 7 hours without affecting the life of the box
change.
The elbow plug connector is very convenient for the connection of
high-voltage incoming cables, and can be used as a load switch in
emergency situations, which can be plugged and unplugged under
power.
Double fuse protection is adopted, and the plug-in fuse (BAY-o-net)
is a dual sensitive fuse (temperature, current) to protect the
short-circuit fault occurred on the secondary side of the box
transformer. The backup current-limiting protection fuse (ELSP)
protects the internal faults of the box transformer and is used to
protect the high-voltage side.
Transformers generally use high ignition point oil (FR3).
All components such as fuses for high-voltage load switch
protection are placed in the same oil tank as the transformer core
and windings.
The main technical parameters:
| Serial number | name | unit | technical parameter |
| 1 | Rated voltage | kV | 10／0.4 (high pressure/low pressure) |
| 2 | Maximum working voltage | kV | 12 (High pressure side) |
| 3 | Rated frequency | Hz | 50 |
| 4 | Rated Capacity | KVA | 50-1600 |
| 5 | 1 minute power frequency withstand voltage | kV | 35 |
| 6 | Lightning impulse voltage | kV | 75 |
| 7 | cooling method | | Oil-immersed natural cooling |
| 8 | High-voltage backup fuse breaking current | kA | 50 |
| 9 | Plug-in fuse breaking current | kA | 2.5 |
| 10 | Ambient temperature | ℃ | -35~40 |
| 11 | Allowable temperature rise of coil | K | 65 |
| 12 | No-load voltage regulation | | ±5％or±2x2.5％ |
| 13 | Noise level | dB | 50 |
| 14 | Protection level | | IP44 |
Features
1. Small size, compact structure and convenient installation;
2. It can be used in ring networks and terminals to reliably
protect personal safety;
3. low damage, low noise, superior performance;
4. The box body adopts anti-theft structure;
5. Low temperature rise and strong overload capacity.
Attributes
Product name: American box-type substation / box-type substation
Color: support customization
Applicable places: urban power grid transformation, residential
quarters, high-rise buildings, industrial parks, factories,
temporary construction electricity, airports, oil fields, docks,
highways and other outdoor places.
Place of production: Chengdu
Brand Name: Baikong Electric
