
Product introduction
S11, S13 series of fully sealed oil-immersed transformers are suitable for AC 50Hz, the original working voltage 20kV and below the power system, as petroleum, metallurgy, chemical, textile, light industry and other enterprises and large dust places of the distribution transformer.
Characteristics of the product
Iron Core:
The core is cold rolled silicon copper sheet with high permeability magnetic grain orientation. The iron core is a new type of iron core, full oblique joint stacking type iron core, the iron core column is a circular section of multi-step steps, and the iron yoke and the iron core are equal sections.
Winding:
The winding adopts corrugated oil channel, no paint dipping process, and tight tape binding; The winding are concentric coils: the high voltage winding has a tap required for the tapping voltage, which is led to the tap-changer, the switch is installed on the box cover, and the power supply can be changed before the tapping voltage
Safety protection device:
30~2000kVA transformer is equipped with pressure relief valve;
Gas relays with alarm and tripping terminals can be installed according to user requirements;
Oil temperature measuring device:
The transformer is equipped with a glass thermometer tube base, the tube base is located on the top of the tank, and extends into the oil 120±10mm; 1000~2000KVA transformer equipped with outdoor signal thermometer;
Transformer tank:
The transformer fuel tank is composed of corrugated wall, and the surface is made of dust spraying and firm paint film. The corrugated heat sink not only has the cooling function, but also has the "breathing" function. The elasticity of the ripple heat sink can compensate for the change of the transformer oil volume caused by the temperature rise. Therefore, the fully sealed transformer has no oil storage cabinet, reducing the overall height of the transformer; the transformer in the packaging of the vacuum oil filling process, completely remove the moisture in the transformer, the transformer oil does not contact with the air. Effectively prevent oxygen and moisture from invading the transformer and reduce the transformer insulation performance and transformer oil aging, so conduct oil sample test irregularly

Technical parameter
S13-M type 6~10kV oil-immersed distribution transformer
Rated capacity (kVA) | Voltage combination | Join group label | No-load loss(W) | Load loss (W) | No-load current (%) | Short circuit impedance (%) | ||
high pressure (kV) | High pressure tap range(%) | Low pressure (kV) | ||||||
30 | 6 6.3 6.6 10 10.5 11 | ±5±2×2.5% | 0.4 | Dyn11 Yzn11 Yyn0 | 80 | 630/600 | 1.8 | 4 |
50 | 100 | 910/870 | 1.6 | 4 | ||||
63 | 110 | 1090/1040 | 1.6 | 4 | ||||
80 | 130 | 1310/1250 | 1.5 | 4 | ||||
100 | 150 | 1580/1500 | 1.4 | 4 | ||||
125 | 170 | 1890/1800 | 1.4 | 4 | ||||
160 | 200 | 2310/2200 | 1.3 | 4 | ||||
200 | 240 | 2730/2600 | 1.2 | 4 | ||||
250 | 290 | 3200/3050 | 1.2 | 4 | ||||
315 | 340 | 3830/3650 | 1.1 | 4 | ||||
100 | 410 | 4520/4300 | 1.1 | 4 | ||||
500 | 480 | 5410/5150 | 1.0 | 4 | ||||
630 | 570 | 6200 | 0.9 | 4.5 | ||||
800 | Dyn11 Yyn0 | 700 | 7500 | 0.8 | 4.5 | |||
1000 | 830 | 10300 | 0.8 | 4.5 | ||||
1250 | 970 | 12000 | 0.7 | 4.5 | ||||
1600 | 1170 | 14500 | 0.6 | 4.5 |





Frequently Asked Questions
Q: Are you a manufacturer, factory, or trading company?
A: Yes, Shandong Zhifeng Transformer Co., Ltd. has over 15 years of experience in developing, producing, and operating transformers.
Q: What is your warranty?
A: We offer a 12-month warranty on all our products.
Q: What is the production time?
A: Production time is typically 30 to 45 days, depending on order requirements.
Q: What are your payment terms?
A: We accept T/T, L/C, or negotiation for payment terms.
Q: How does your factory conduct quality control?
A: We conduct 100% QC inspection throughout the manufacturing process, with over 10 QC inspections from raw materials to final product.
Q: Do you have products in stock?
A: We do not normally keep products in stock; all items are manufactured based on order quantity.
Q: What is needed for a custom transformer order?
A: Technical drawings and specifications are preferred, or detailed technical specification dates can be provided under "Quote and order required information."
Q: Can I have a catalogue and price list for a trial order?
A: All our products are made in China or displayed on our official website. Feel free to contact us directly for more information.