315kva Transformer, The Ultimate Guide
Nov 05, 2025
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A 315 KVA transformer can help individuals in different places since they are helpful in almost all circumstances that you might face.
Transformers are equipment used to transmit electricity and adjust voltage from an input line to an output line. There are many distinct transformers, each with its size, characteristics, capability, and purposes.
A transformer is necessary because it can convert the power provided by utility providers into the voltage your equipment requires. However, purchasing the incorrect transformer can substantially harm your gear.
What Is a 315KVA Transformer?
A 315 KVA transformer offers complete voltage transition in the distribution grid. It also regulates the voltage and provides separation between the primary and secondary circuits.
This transformer is ideal for supplying electrical transmission systems with appliances, lighting, mechanized machines, and power loads.
The transformer 315KVA will endure the customary high electrical strains, and the huge, robust radiators will swiftly disperse any heat generated by "Eddy" currents' maximum reduction.
This transformer should be eligible to be installed outside. With a three-phase, 50Hz, 11-kV circuit, the neutrality is effectively electrically insulated and should be built to withstand voltage level changes of up to 12.5 percent.
A 315 KVA transformer must be able to supply specified capacity continuously, and it should surpass the indicated temperature increase. Additionally, this transformer and its voltage levels under no-load must be 11000/433-250 Volts.
The core is cold-rolled grain-aligned annealed steel of good quality. Also, the minimal loss and good grain characteristics are covered with hot oil resistance.
Generally, the insulation is firmly fastened together to the frames to reduce movement or noise. Zinc Chromate and paper are used to properly insulate all core clamping screws; with the prolonged operation of the transformers, the core design must ensure core losses' permanency.
Keeping tabs on the 315 KVA transformer specifications and researching them is better than wasting money on the wrong model.
Types of 315 KVA Transformer From HENAN GNEE ELECTRIC CO., LTD.
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315 kva Dry Type Cast Resin Transformer
A 315 kva Dry Type Cast Resin Transformer is an immobile device that uses environmentally acceptable temperature heat insulation. It has no revolving parts.
"Cast resin type transformers" are another example of this type of transformer. It has a wide variety of business, industrial, and utility purposes.
Copper Strip/Foil is used to make the 315 kva Dry Type Cast Resin Transformer windings. This cutting-edge technology ensures better resilience to electrodynamic pressures than standard elix windings.
Class F/H material is used to provide insulation between both windings. 315 kva Dry Type Cast Resin Transformers also use Metals, ceramics, fiberglass, and resin as fire-resistant materials.
Additionally, because there is no oil, it is environmentally friendly. And consumers could use it in a humid, chemically polluted environment.
315 kva Dry Type Cast Resin Transformer are ideal for those who care about the environment and want to limit their carbon footprint.
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315 kva Oil Immersed Transformer
The 315 kVA Oil Immersed Transformer is pole placed or positioned in a distribution station for daily illumination and factory power with an LV output of up to 0.4kV.
Transformers with oil-immersed heat dissipation are known as 315 kva Oil Immersed Transformer converters. In fact, they have been utilized in power distribution system installations for centuries.
Oil-immersed power transformers have become the most commonly used electrical technology because of their simple structure, strong history, extensive industrial capacity, and higher reliability.
A magnetic core, windings, and bushings make up an 315 kva Oil Immersed Transformer. The oil storage container is a component of oil-immersed transformers. It makes operation easier by keeping track of the oil storage tank and allowing for temperature increases of the oil.
315 kva Oil Immersed Transformers make up the majority of the transformers in the power grid. A dry-type transformer, as the name suggests, is one that dissipates heat through the air rather than transformer oil.
The transformer's oil is insulated from the atmosphere thanks to the corrugated tank's thermal expansion and contraction elements.
Generally, the 315 kva Oil Immersed Transformer uses Ester Fluid and is an outdoor type of installation. Its winding material is made out of Aluminum, and it is ground-mounted.
Additionally, it has a maximum altitude of < 1000 M. It also has 3 phases, a frequency of 50 HZ, and its primary voltage is 22kv.
315 kva distribution transformer Case
11kv 0.433 kv 315 kva Oil cooling distribution transformer 315 kva shipped to Nigeria Technical Data:
| Rated Capacity: | 315 kVA ; |
| Mode: | S20-M-315 or depends; |
| Primary Voltage: | 11kV; |
| Secondary Voltage: | 0.433kV; |
| No Loading Loss: | 305 W ± 15%; |
| Loading Loss: | 3065 W ± 15%; |
| Vector Group: | Dyn5;Dyn11; Yyn0; |
| Tapping Method: | OFFLCT; |
| Tapping Range: | ± 5.0%; ± 2.5%; |
| Phase Number: | Three Phase. |
S11-315 KVA-11/0.4KV Oil Immersed distribution Transformer shipped to South Africa
315 KVA distribution transformer specification and data sheet
|
Delivered to |
South Africa |
|
Model |
S11-315 KVA-11/0.4KV |
|
Type |
Oil Immersed distribution Transformer |
|
Standard |
IEC60076 |
|
Rated Power |
315 KVA |
|
Frequency |
50 HZ |
|
Phase |
Three |
|
Cooling Type |
ONAN |
|
Primary Voltage |
11 KV |
|
Secondary Voltage |
0.4 KV |
|
Winding Material |
Copper |
|
Vector Group |
Dyn11 |
|
Impedance |
4% |
|
Tap Changer |
NLTC |
|
Tapping Range |
±2*2.5%@primary side |
|
No Load Loss |
0.48 KW |
|
On Load Loss |
3.65 KW |
|
Accessories |
Standard Configuration |
dry type air forced cooling Trasnsformer 315kVA 11kV
| Product or component type | Transformer |
|---|---|
| Transformer type | Dry type transformer |
| Network type | AC |
| Directives | 2015/2014/548/EC- ecodesign |
| Type of installation | Indoor |
| maximum altitude | < 1000 m |
| cooling mode | ANAF (air natural air forced) |
| winding material | Aluminium |
| insulation material | Cast resin (HV) Pre-impregnated (LV) |
| degree of protection | IP00 IP31 enclosure |
| Mounting mode | Fixed |
| phase | 3 phases |
|---|---|
| rated power | 315 kVA |
| rated frequency | 50 Hz |
| rated primary voltage | 11 kV |
| Secondary voltage ( at no-load) | No load: 433 V |
| Insulation voltage to industrial frequency ( 50 Hz 1 mn) | 12 kV AC primary 1.1 kV AC secondary |
| rated insulation level | Primary circuit: 35 kV AC Secondary circuit: 3 kV AC |
| Lighting impulse whistand voltage ( BIL) , 1.2/50 µs | 95 kV for primary circuit |
| Vector group | Dyn11 |
| HV tappings (off circuit) | +/- 2 x 2.5 % |
| short circuit impedance | 4 % |
| no-load losses | 990 W |
| load losses at 75°C/120 °C | 2300 W at 75 °C 2625 W at 120 °C |
| temperature rise of windings | 100 K (winding) |
| thermal class | F |
| sound power level | 59 dB at 1 m |
| Electrical connection | Cable high voltage connection Cable low voltage connection |
| Height | 1800 mm |
| Width | 1300 mm |
| Length | 1800 mm |
| total weight | 1800 kg |
| Ambient air temperature for operation | -25…40 °C for C2 |
|---|---|
| Ambient air temperature for storage | -50…40 °C C4 |
| environmental certification | 0…95 % (E4) |
| fire certificate | F1 |
| Standards | IEC 60076-11:2018 |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 180 cm |
| Package 1 Width | 130 cm |
| Package 1 Length | 180 cm |
| Package 1 Weight | 1900 kg |
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