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China Pad-Mounted Transformer - Custom Box-Type Substation Suppliers | Derui Factory Quality Solutions
Model meaning
Conditions of use
❄️
Cooling condition: Air self-cooling;
⛰️
Altitude: <1000m;
🌡️
Ambient temperature: The outdoor ambient temperature shall not exceed 40℃, and not be lower than -45℃, the monthly average temperature shall not exceed 30℃, and the annual average temperature shall not exceed 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 shall not exceed 0.3m/s², vertical acceleration shall not exceed 0.15m/s²;
🍃
Ambient environment: The installation environment should be free of obvious pollution, explosive, corrosive gas and dust;
🏗️
Installation site: There should be no severe vibration or impact, and it is required to be installed on a cement platform or other flat and solid platform;
🤝
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 6.3 | 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.
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)
What are the ambient temperature limits for this distribution transformer?
The outdoor ambient temperature should not exceed 40℃ and must not be lower than -45℃. Additionally, the monthly average temperature should not exceed 30℃, and the annual average temperature must remain under 20℃.
Can this box substation be installed at high altitudes?
The standard design and normal service conditions are rated for altitudes of less than 1000 meters. If your installation site exceeds this limit, please contact the manufacturer to negotiate custom requirements.
What are the primary structural requirements for the installation platform?
The substation must be installed on a flat, solid concrete platform. Since most of the weight is concentrated at the rear (where the transformer body is located), the rear foundation must be exceptionally sturdy. Any slight unevenness can be corrected by setting the front cabinet foundation slightly lower and sealing it with concrete after positioning.
How is the substation protected on the high-voltage side?
High-voltage protection is managed through a configuration of plug-in fuses and backup fuses. The exact fuse capacities correspond directly to the transformer's rated capacity, as detailed in the high-voltage protection fuse configuration list.
What materials should be used for the grounding grid?
The grounding grid can be built using 12 plated round steel or 30x4 galvanized flat steel. The final grounding resistance must satisfy the specific safety guidelines of the local power department.
Is there a space requirement for operating the switches safely?
Yes, after installing the combined substation, a clearance gap of at least 1.5 meters must be maintained in front of the switch cabinet to ensure safe and unobstructed manual operations.