| Type: | Power |
|---|---|
| Structure: | Protection |
| Form: | Partly-welded Type |
| Operation Voltage: | High Voltage |
| Size: | 3 Uint |
| Application Range: | Power Plants |
| Customization: |
|---|
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Product Description
Steel Plate Type Outdoor Pre-Installed Substation Grid Substation Mobile Substation
(1) Box shell
European box change box shell with steel structure as the main body, four sides can be used according to different use environment can be composite sandwich plate, stainless steel plate, cold rolled plate, stainless steel plate inlaid anti-corrosion wood, concrete wall, so as to achieve coordination with the environment.
(2) high-voltage chamber
High voltage inlet cabinet, high voltage outlet cabinet, high voltage metering cabinet, PT cabinet, DC screen and other devices are installed in European box transformer high voltage switchgear mainly to XGN15-12 type ring network cabinet and XGN-12 type inflatable cabinet, simple operation, safe use.
(3) Transformer room
European-style box transformer room is equipped with dry type transformer or oil-immersed transformer, temperature controller and high-power fan are installed indoors. The high-voltage end of transformer is connected by cable, the low-voltage end is connected by high-quality copper bar, and the exposed part is wrapped by insulating sleeve.
(4) low-voltage chamber
European-style box transformer low-voltage chamber mainly uses GGD low-voltage switchgear, according to the demand can be configured with low-voltage inlet line, low-voltage metering, low-voltage compensation, low-voltage outlet switchgear, can realize intelligent control, without special guard.
(5) Principle
The principle of European box-type substation is basically the same as that of traditional civil power room. The high-voltage power supply comes in through high-voltage switchgear, goes through transformer step-down, and then distributes electric energy through low-voltage switchgear. Because European box-type substation adopts box shell structure, it can be strong mobility, easy installation, and can be used outdoors.
Technical Parameters
| High voltage chamber | Description | Unit | Arguments |
| Rated frequency | HZ | 50 | |
| Nominal voltage | KV | 6 10 35 | |
| Maximum operating voltage | KV | 6.9 12 40.5 | |
| Rated current | A | 400,630,1250 | |
| Transfer current | A | 1200-2000 | |
| Rated short time current | KA | 12.5(2s/4s),16(2s/4s),20(2s/4s) | |
| Rated peak tolerable current | KA | 31.5,40,50 | |
| Power frequency withstand voltage - to ground and time/isolation fracture | KV | 32/36 42/48 95/118 | |
| Lightning Strike - to ground and time/isolation fracture | KV | 60/70 75/85 185/215 | |
| Rated short-circuit breaking current (current limiting fuse) | KA | 31.5 | |
| Switch off no-load transformer capacity | KVA | 2500 | |
| Transformer | Rated capacity | KVA | 30-2500 |
|
Tap range
|
% | ±2*2.5%,±5% | |
| Linkage group | Yyn0,Dyn11 | ||
| Impedance voltage | % | 4,4.5,6,8 | |
| Nominal voltage | V | 220,380,690,800 | |
|
Low voltage chamber |
Rated current of main loop | A | 50-4000 |
| Branch current | A | 5-800 | |
| The main circuit is rated to withstand short-time current | KA | 15(1s),30(1s),50(1s),65(1s) | |
| Rated peak tolerable current of main loop | KA | 30,63,110 | |
| shell | Protection class (conventional products) | IP33 | |
| Noise level | dB | ≤50 | |
| Enclosure temperature rise level | 10K |
WORKING CONDITIONS
1. Altitude: no more than 2000M.
2. Ambient temperature: high temperature: +40ºC; Low temperature: -45ºC : high monthly average temperature: +30ºC : high annual average temperature: +20ºC;
3, installation environment: no explosive, corrosive liquid, gas and dust, installation site without violent shock, allowed in a certain period of time Or run completely submerged in water.
4. Ground acceleration induced by earthquake Ag; The horizontal direction is lower than 3m/s; The vertical direction is lower than 1.5m/s.
5, the waveform of the power supply voltage: approximately sine wave.
6, three-phase power supply symmetry: for three-phase underground transformer, three-phase power supply voltage should be roughly symmetrical.
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