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China Suppliers Factory: ZGS Series Box-type Substation with Pad-Mounted Transformer for Efficient Power Distribution
Model meaning
Conditions of use
Cooling condition: Air self-cooling;
Altitude: <1000m;
Ambient temperature: The outdoor ambient temp shall not exceed 40℃, and not be lower than -45℃. Monthly average temp ≤ 30℃, annual average temp ≤ 20℃;
Relative humidity: At 25℃, the relative humidity of the air does not exceed 95%, and the monthly average does not exceed 90%;
Seismic intensity: Horizontal acceleration ≤ 0.3m/s², vertical acceleration ≤ 0.15m/s²;
Ambient environment: Installation environment should be free of obvious pollution, explosive, corrosive gas and dust;
Installation site: No severe vibration or impact, and required to be installed on a cement platform or other flat and solid platform;
Special Note: When the above normal service conditions cannot meet the usage requirements, the user shall negotiate with the manufacturer.
Product characteristics
Small size, compact structure, easy installation;
It can be used for ring network and terminal, and it can reliably protect personal safety;
Low damage, low noise, superior performance;
Low temperature rise and high load capacity.
List of fuse configuration for high voltage protection
| Rated capacity of transformer (kVA) | Low voltage side (0.4kV) rated current (A) | High voltage side (10kV) rated current (A) | Plug-in fuse capacity (A) | Backup fuse capacity (A) | Low voltage equipped main switch capacity (A) |
|---|---|---|---|---|---|
| 50 | 72.2 | 2.89 | 4 or 6 | 10 | 100 |
| 80 | 115.5 | 4.62 | 10 | 20 | 160 |
| 100 | 144.3 | 5.77 | 10 | 20 | 200 |
| 125 | 180.4 | 7.22 | 10 | 25 | 250 |
| 160 | 230.9 | 9.24 | 15 | 40 | 315 |
| 200 | 288.7 | 11.55 | 20 | 40 | 400 |
| 250 | 360.8 | 14.43 | 25 | 50 | 500 |
| 315 | 454.7 | 48.19 | 31.5 | 80 | 630 |
| 400 | 577.4 | 23.09 | 40 | 80 | 800 |
| 500 | 721.7 | 28.87 | 50 | 100 | 1000 |
| 630 | 909.3 | 36.37 | 65 | 125 | 1250 |
| 800 | 1154.7 | 46.19 | 80 | 125 | 1600 |
| 1000 | 14434 | 57.75 | 100 | 200 | 2000 |
| 1250 | 1804.2 | 72.17 | 125 | 250 | 2500 |
| 1600 | 2309.4 | 92.38 | 160 | 320 | 3200 |
Main technical parameter table
Technical parameter of 6kV and 10kV S□ series oil immersed distribution transformer
| Rated capacity kVA | Voltage combination KV | Connection group symbol | Loss kW | Off-load current % | Short circuit impedance % | Weight kg | Outline dimension mm L×W×H | Track gauge, longitudinal/ transverse | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HV | LV | Off-load | Load 75% | Body weight | oil weight | Total weight | ||||||
| 30 | 10.5 10 63 | 0.4 | Dyn11 Yzn11 Yyn0 | 0.08 | 0.63/0.6 | 1.5 | 4 | 185 | 70 | 310 | 790×660×925 | 550/400 |
| 50 | 0.1 | 0.91/0.87 | 1.3 | 255 | 85 | 395 | 820×675×1030 | 550/400 | ||||
| 63 | 0.11 | 1.09/1.04 | 1.2 | 280 | 95 | 430 | 845×690×1065 | 550/400 | ||||
| 80 | 0.13 | 1.31/1.25 | 1.2 | 320 | 100 | 480 | 865×715×1075 | 550/550 | ||||
| 100 | 0.15 | 1.58/1.5 | 1.1 | 380 | 110 | 540 | 880×720×1120 | 550/550 | ||||
| 125 | 0.17 | 1.89/1.8 | 1.1 | 444 | 115 | 600 | 910×750×1110 | 550/550 | ||||
| 160 | 0.2 | 2.31/2.2 | 1 | 510 | 130 | 690 | 910×750×1200 | 550/550 | ||||
| 200 | 0.24 | 2.73/2.6 | 1 | 640 | 150 | 840 | 1220×745×1220 | 550/550 | ||||
| 250 | 0.29 | 3.2/3.05 | 0.9 | 720 | 190 | 950 | 1240×775×1345 | 660/660 | ||||
| 315 | 0.34 | 3.83/3.65 | 0.9 | 835 | 200 | 1065 | 1230×750×1345 | 660/660 | ||||
| 400 | 0.41 | 4.52/4.3 | 0.8 | 1010 | 240 | 1255 | 1330×825×1375 | 660/660 | ||||
| 500 | 0.48 | 5.41/5.15 | 0.8 | 1170 | 260 | 1485 | 1455×915×1390 | 660/660 | ||||
| 630 | Dyn11 Yyn0 | 0.57 | 6.2 | 0.6 | 4.5 | 1375 | 320 | 1800 | 1540×920×1510 | 660/660 | ||
| 800 | 0.7 | 7.5 | 0.6 | 1620 | 365 | 2120 | 1650×1035×1555 | 820/820 | ||||
| 1000 | 0.83 | 10.3 | 0.6 | 1780 | 405 | 2450 | 1855×1235×1600 | 820/820 | ||||
| 1250 | 0.97 | 12 | 0.5 | 2065 | 560 | 2855 | 1925×1285×1680 | 820/820 | ||||
| 1600 | 1.17 | 14.5 | 0.5 | 2470 | 650 | 3400 | 2025×1355×1730 | 820/820 | ||||
| 2000 | 1.55 | 18.3 | 0.4 | 5 | 2700 | 695 | 4460 | 2190×1900×1950 | 820/820 | |||
| 2500 | 1.83 | 21.2 | 0.4 | 3230 | 870 | 5330 | 2240×1940×1980 | 1070/1070 | ||||
Note 1: The load loss values above the diagonal line in the table are applicable to the Dyn11 or Yzn11 connection group, and the load loss values below the diagonal line are applicable to the Yn0 connection group.
Note 2: The outline dimensions are for reference only during selection, and the final dimensions are subject to the product's outline drawing.
Note 2: The outline dimensions are for reference only during selection, and the final dimensions are subject to the product's outline drawing.
Basic structure
The box substation should be installed on a horizontal concrete platform, which should be able to withstand the weight. Due to the fact that most of the weight of the box substation is concentrated at the rear of the box containing the transformer body, the front cabinet is mostly empty and relatively light in weight. Therefore, the rear of the platform should be sturdy and able to withstand the weight of the combined transformer. Meanwhile, it is also required that the front and rear countertops be flat (generally, it is not easy to achieve flatness, so the foundation of the front cabinet can be slightly lower than that of the rear transformer body, and after being in place, it can be sealed with concrete) to ensure smooth installation of the box substation.
① Regarding the combination size of dimensions;
② The concrete foundation should have a smooth surface. After the installation of the combined substation, the surrounding area of the base should be sealed with cement;
③ The shape of ground bars and cable fixing brackets can be determined according to the actual situation;
④ Cable fixing brackets and ground bars should be pre-embedded;
⑤ The position of the cable holes for incoming and outgoing lines depends on the specific situation;
⑥ After the installation of the combination substation, there must be a gap of no less than 1.5m on the front of the switch to facilitate operation;
⑦ The grounding grid can be made of 12 plated round steel or 30 x 4 galvanized flat steel, and the ground wire resistance should meet the requirements of the power department.
Note: The dimensions of L, W and H are determined according to the actual engineering configuration.
Frequently Asked Questions (FAQ)
Q
What are the ambient temperature requirements for this distribution transformer?
The outdoor ambient temperature must not exceed 40℃ and must not be lower than -45℃. Additionally, the monthly average temperature should remain under 30℃, and the annual average temperature should not exceed 20℃.
Q
Can this substation be used in ring network applications?
Yes, it is designed to be highly versatile and can be used for both ring networks and terminal operations while reliably protecting personal safety.
Q
What type of cooling system does the transformer use?
The equipment operates under normal cooling conditions utilizing an air self-cooling system.
Q
What are the core installation site requirements for the box substation?
It must be installed on a smooth, flat concrete platform or solid structure with no severe vibration or impact. Since most weight is concentrated at the rear where the transformer body sits, the rear foundation must be especially sturdy.
Q
What materials are recommended for the grounding grid setup?
The grounding grid can be constructed using either 12 plated round steel or 30 x 4 galvanized flat steel, ensuring the ground wire resistance meets the standards of your local power department.
Q
What is the required clearance space in front of the switch panel?
After installing the combined substation, there must be a minimum clearance gap of 1.5 meters on the front side of the switch to facilitate safe and easy operations.