Key Features
Versatile Use: Suitable for indoor and outdoor installations.
Durable & Low Maintenance: Constructed to resist short circuits and overloads, with minimal maintenance.
Efficient: The S11 series provides the best balance of low energy loss and cost-effectiveness, while the S13 series offers the latest in energy efficiency.
Main Specification
| Rated Capacity (kVA) | 10~2500 kVA |
| Vector Group | Yyn0 or Dyn11 |
| Impedance Voltage (%) | 4%, 4.5% |
| Rated voltage | H. V：11, 10.5, 10, 6.3, 6KV (or customized) |
| Tapping range | ± 5% or ± 2 * 2.5% (or customized) |
| Frequency | 50/60Hz |
| Number of phases | 3 Phase Transformer |
| Cooling method | ONAN |
| Temperature rise limits | Winding ≤ 65K, Top oil ≤ 60K |
| Standards | IEC60076 Power Transformer, GB1094 Power Transformer, GB/T6451 Technical Data & Requirement of Three-phase Oil-immersed Power Transformer |
| Altitude | ≤1, 000m |
| Highest ambient temperature | +40℃ |
| Highest annual average temperature | +20℃ |
| Highest monthly average temperature | +30℃ |
| Lowest temperature | -25℃ Indoor and outdoor |
| RATED CAPACITY | VOLTAGE COMBINATION | CONNECTION GROUP | LOSS (kW) | NO-LOAD CURRENT | SHORT-CIRCUIT IMPEDANCE | WEIGHT(KG) | ||||
| (kVA) | HV(kV) | HIGH-VOLTAGE TAPPING RANGE | LV (kV) | SYMBOL | NO-LOAD | LOAD | (%) | (%) | OIL WEIGHT | GROSS WEIGHT |
| 30 | 6 6.3 6.6 10 10.5 11 |
±5% ±2*2.5% |
0.4 | Yyn0 Dyn11 |
0.1 | 0.63/0.60 | 2.1 | 4 | 75 | 295 |
| 50 | 0.13 | 0.91/0.87 | 1.1 | 88 | 395 | |||||
| 63 | 0.15 | 1.09/1.04 | 1 | 95 | 420 | |||||
| 80 | 0.18 | 1.31/1.25 | 1 | 103 | 480 | |||||
| 100 | 0.2 | 1.58/1.50 | 0.9 | 115 | 540 | |||||
| 125 | 0.24 | 1.89/1.80 | 0.9 | 130 | 645 | |||||
| 160 | 0.28 | 2.31/2.20 | 0.8 | 145 | 740 | |||||
| 200 | 0.34 | 2.73/2.60 | 0.8 | 175 | 885 | |||||
| 250 | 0.4 | 3.20/3.05 | 0.7 | 195 | 1010 | |||||
| 315 | 0.48 | 3.83/3.65 | 0.7 | 230 | 1205 | |||||
| 400 | 0.57 | 4.52/4.30 | 0.6 | 255 | 1375 | |||||
| 500 | 0.68 | 5.41/5.15 | 0.6 | 4.5 | 285 | 1620 | ||||
| 630 | 0.81 | 6.2 | 0.6 | 350 | 1960 | |||||
| 800 | 0.98 | 7.5 | 0.5 | 405 | 2310 | |||||
| 1000 | 1.15 | 10.3 | 0.5 | 490 | 1690 | |||||
| 1250 | 1.36 | 12 | 0.5 | 550 | 3315 | |||||
| 1600 | 1.64 | 14.5 | 0.4 | 625 | 3795 | |||||
High Performance
Good examples include the 100 kVA three-phase transformer, which has been used in Tanzania. It operates on 11 kV at the high voltage side to deliver a constant 0.4 kV on the low voltage side. This is an efficient transformer as it only consumes 200W of no-load loss and 1580W load loss, hence good for long-term use.
Core & Windings
Thus, the core is of silicon steel to minimize losses; windings are copper with insulation for smooth conversion at high efficiency.
Transformer Oil – Two Key Roles
Insulation: to stop any leak and thus enable operations safely.
Cooling: by absorbing the generated heat due to heavy load operations
Overload Capacity
Following are some points of interest regarding overload capacity.
Short periods of overloading could also easily be handled by them because they are dependable, enduring systems in fluctuating power surroundings.
TRONKI ELECTRIC-Reliable Long Service-LIFETIME Transformers.
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