S13 Oil immersed power transformer is an independently developed product basing on the original S11 distribution transformer by research application of new material and new process and combing self-dependent innovation with technology import and optimal innovation design of iron core and coil structure to reduce no-load loss and noise.
No-load loss reduces by 37% in average. Noise level reduces 20%in average compared to current national standard JB/T10088-2004.
Performance level of the products reaches national advanced level.
S13-M 11kV/0.4kV 30KVA-2500KVA Oil Immersed Transformer-Winding Series

S13 Series 10 KV/0.4 KV Three Phases winding series off-load tap changer distribution transformer | |||||||||
Model | Rated Capacity | Connection symbol | Voltage combination (KV) | No-load loss (W) | Load loss (W) | No-load Current | Short circuit impedance | ||
High Voltage | Tapping Range | Low Voltage | |||||||
S13-M-30 | 30 KVA | Yyn0 or Dyn11 | 6KV 6.3KV 6.6KV 10KV 10.5KV 11KV | ±5% or ±2*2.5% | 0.4 KV 0.415KV 0.433KV | 80 W | 630/600 | 2.3% | 4.0% |
S13-M-50 | 50 KVA | 100 W | 910/870 | 2.0% | 4.0% | ||||
S13-M-63 | 63 KVA | 110 W | 1090/1040 | 1.9% | 4.0% | ||||
S13-M-80 | 80 KVA | 130 W | 1310/1250 | 1.9% | 4.0% | ||||
S13-M-100 | 100 KVA | 150 W | 1580/1500 | 1.8% | 4.0% | ||||
S13-M-125 | 125 KVA | 170 W | 1890/1800 | 1.7% | 4.0% | ||||
S13-M-160 | 160 KVA | 200 W | 2310/2200 | 1.6% | 4.0% | ||||
S13-M-200 | 200 KVA | 240 W | 2730/2600 | 1.5% | 4.0% | ||||
S13-M-250 | 250 KVA | 290 W | 3200/3050 | 1.4% | 4.0% | ||||
S13-M-315 | 315 KVA | 340 W | 3830/3650 | 1.4% | 4.0% | ||||
S13-M-400 | 400 KVA | 410 W | 4520/4300 | 1.3% | 4.0% | ||||
S13-M-500 | 500 KVA | 480 W | 5410/5100 | 1.2% | 4.0% | ||||
S13-M-630 | 630 KVA | 570 W | 6200 | 1.1% | 4.5% | ||||
S13-M-800 | 800 KVA | 700 W | 7500 | 1.0% | 4.5% | ||||
S13-M-1000 | 1000 KVA | 830 W | 10300 | 1.0% | 4.5% | ||||
S13-M-1250 | 1250 KVA | 970 W | 12800 | 0.9% | 4.5% | ||||
S13-M-1600 | 1600 KVA | 1170 W | 14500 | 0.8% | 4.5% | ||||
S13-M-2000 | 2000 KVA | 1510 W | 17820 | 0.8% | 5.0% | ||||
S13-M-2500 | 2500 KVA | 1780 W | 20700 | 0.7% | 5.0% |