Customized Design ＆ Certified Quality — Built to Meet Your Needs
630 kVA is a very important capacity — it’s the point where projects become “serious”. Once the capacity reaches 630 kVA, it’s more likely to be used in industrial power level projects. 630 kVA is also the most widely used type by power companies and engineering design institutes. They are moderate in capacity and very flexible. That’s why they are widely used in various scenarios.
Jinan Omek Electric Power Co., Ltd. (OMEK Power), is a transformer manufacturer and service provider that integrates R&D, production, sales, technical support and EPC construction of power products. As a technology-driven company, we have been certified as a National High-Tech Enterprise in China. All products, including our 630 kVA transformer, have undergone strict quality inspection and the quality is guaranteed.
Technical Specifications
Different types of 630 kVA transformers are different in technical specifications. The core content of the technical specification is presented on the nameplate of the transformer you buy. Here are two examples of 630 kVA transformers.
630 kVA Dry-type Transformer Specifications:
(Take SCB18-630/10 3 phase dry type distribution transformer as example)
- Electrical
- Physical
- Environmental
Rated capacity (kVA)：630 kVA
Rated voltage:
High voltage (HV): 6-11 kV
Low voltage (LV): 0.4 kv
No load current: 0.6%
Frequency: 50 Hz / 60 Hz
Phase: Three phase
Vector group: Dyn11, Yyn0
Connection method: Star / Delta
Tapping range: ±10%
Tap changer type: OCTC / OLTC
No load losses: 1200 W
Load losses: 5530 (130℃)
Impedance voltage: 4.5%
630 kVA dry-type transformer dimensions (L × W × H): 1295×1410×1355 mm
Total weight: 1515 kg
Transformer type: Dry-type
Cooling method: AN / AF
Core material: CRGO / Amorphous
Winding material: Copper / Aluminum
Installation type: Indoor/Outdoor
Mounting type: Pad-moounted/ Skid-mounted/ Floor-mounted
Enclosure type: Open / Enclosed type
Ambient temperature range: -25 ℃ – 45 ℃
Altitude：≤ 1000m
Relative humidity：≤ 95%
Duty type：Continuous duty
Noise level dB (A)：63
Applicable standards:
CE, ASTA, ISO
Energy efficiency class: Customizable
630 kVA Oil-type Transformer Specifications:
(Take S14-M-630/10 3-phase oil-type distribution transformer as an example)
- Electrical
- Physical
- Environmental
Rated capacity (kVA)：630 kVA
Rated voltage:
High voltage (HV): 6-11 kV
Low voltage (LV): 0.4 kV
No load current: 0.6%
Frequency: 50 Hz / 60 Hz
Phase: Three phase
Vector group: Dyn11, Yyn0, Yzn11
Connection method: Star / Delta
Tapping range: ±10%
Tap changer type: OCTC / OLTC
No load losses: 1200 W
Load losses: 6200 W (75℃)
Impedance voltage: 4.5%
Ambient temperature range: -25℃ – 45℃
Altitude：≤ 1000m
Relative humidity：≤ 95%
Duty type：Continuous duty
Noise level dB (A)：63
Applicable standards:
CE, ASTA, ISO
Energy efficiency class: Customizable
Not Just Transformers — We Offer You One-stop Solutions
Customization Options
Electrical Parameters
· Voltage rating: 6–38.5 kV
· Winding material: Copper or Aluminum
· Vector group: Dyn11, Yyn0, Yzn11
· Energy efficiency level: Three levels are available for your choice
Structure & Installation
· Enclosure and protection class: IP20, IP44, IP54
· Installation type: Floor-mounted, Skid-mounted, Pad-mounted
· Cable entry: Can be customized according to wiring requirements
· Noise reduction design: Customizable low-noise structure
Special Functions & Accessories
· Monitoring and protection devices: temperature monitoring, humidity monitoring, overcurrent protection
· Cooling system: ONAN,ONAF,AN,AF
· Special environment adaptation: High altitude, Low temperature, etc.
· Customized logo and packaging: Customized according to your requirements
Optional Accessories
Transformer accessories play a crucial role in operation monitoring, safety protection and daily maintenance. They are indispensable components that can help ensure the long-term stable operation of transformers.
➡️ Oil Level Indicator
➡️ Oil Temperature Indicator
➡️ Pressure Relief Device
➡️ Buchholz Relay
➡️ Cooling Fan
➡️ Different Types of Bushings
……
Process of Custom Services
1. Discuss your requirements. Please share your demand with us, such as application scenarios, electrical parameters and installation conditions.
2. Design a solution. Our expert team will create a tailored solution for you, and will give you detailed specifications and structural drawings.
3. Solution Confirmation. We will go over the solution with you to see if there are any problems, and make adjustments according to your feedback.
4. Manufacturing. We will carry out production while strictly complying with the solution. Our production process is precise and undergoes rigorous quality inspection.
5. Delivery. After final inspection, our products will be delivered to you. We’ll provide factory test reports. We support on-site inspection and installation guidance.
500 kVA, 630 kVA and 800 kVA — Which One Should I Choose?
Among the common capacities of transformers, 500 kVA, 630 kVA and 800 kVA are three close values. You might hesitate and don’t know how to make the right decision. Here is the comparison among the three capacities of OMEK transformers.
- Comparision
Parameter | 500 kVA Transformer | 630 kVA Transformer | 800 kVA Transformer |
Rated Capacity | 500 kVA | 630 kVA | 800 kVA |
Recommended Continuous Load | ≤ 400 kVA | ≤ 500 kVA | ≤ 650 kVA |
Typical Load Rate | 75–90% | 70–80% | 60–80% |
Initial Cost | Lowest | Medium | Highest |
Size & Weight | Small | Medium | Large |
Future Expansion Margin | Limited | Moderate | High |
Here’s a simple way to calculate the capacity you need:
Required Capacity (kVA) = Total load (kW) × 1.25
For example, if your total load is 450 kW,
450 kW×1.25=562.5 kVA
So, the best choice is 630 kVA transformer.
Applications
A 630 kVA transformer is a widely used capacity for power distribution. It meets industrial electricity needs and offers strong versatility. It plays a significant role in different sectors of our society.
Customer Testimonials
Take a look at what our customers have to say.
Why Choose Us
We buy a transformer with the hope that it is reliable and durable. OMEK 630 kVA fully meets your requirements.
Our transformers are competitively priced. You don’t need to overpay to enjoy high quality products and service.
We know delay equals loss. That’s why we strictly adhere to the confirmed schedules. What we promise is what you get.
Long-term partners from all industries let their actions do the talking. They trust us, they chose us, and they keep coming back.
Reliable product, fair price, proven performance, impeccable service…What more could you ask for? If you’re looking for a transformer you can buy with confidence, we’re the right choice.
Get A Quote
Interested in our 630 kVA transformers? Reach out to us and share your needs, including application scenarios, specifications you need, project timeline or other special requirements. We’ll get back to you promptly!
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FAQ
Have any questions? We’re here to help you out.
The 630 kVA transformer is a distribution equipment with a rated capacity of 630 kVA. kVA is the abbreviation for kilovolt-ampere, which is the unit of apparent power. Its main function is to change voltage, transmit and distribute electrical energy. Its most common function is to convert high-voltage electricity into low-voltage electricity for daily use. It is often installed in places with medium electricity consumption to supply stable power.
No-load loss is a fundamental type of loss for a transformer. It is part of the power dissipated by 630 kVA transformer. The no-load losses of different transformers are different.
No-load loss refers to the electrical energy loss generated when the transformer is connected to the rated voltage and the secondary side is in an open-circuit state, that is, without any electrical equipment attached. This loss mainly comes from the hysteresis loss and eddy current loss of the core.
As long as the transformer is powered on, no matter if it carries loads or not, this part of loss will remain stable. The extent of the loss is closely related to the material and manufacturing process of the core. Cores made of better material have lower no load loss.
The size of a 630 kVA transformer is not a fixed value. It mainly depends on whether it is an oil-immersed type or a dry type, the specific model, and the design of the manufacturer. If you want to know the size of the transformer you need, please contact us.
We usually calculate the short-circuit current based on the short-circuit impedance of the transformer. The short-circuit current of a single-phase transformer is typically 25 to 50 times the rated current, while that of a three-phase transformer is usually 10 to 25 times the rated current.
Load capacity is different from rated capacity.
Rated Capacity is a fixed value set by the manufacturer, for example, the rated capacity of a 630 kVA transformer is exactly 630 kVA. It is the maximum capacity that the equipment can operate stably for a long time under ideal conditions, and the value remains unchanged.
Load Capacity shows how much load the transformer can actually handle. It is dynamic and can be affected by actual working conditions. When the environment has good ventilation, low temperature, or is operated for a short period of time, the load capacity can be slightly higher than the rated capacity (for example, a short-term overload of 10% to 20%); when the environment temperature is high, the heat dissipation is poor, or there are loads with low power factor, the load capacity can be lower than the rated capacity.
A 630 kVA transformer with feeder pillar refers to an integrated outdoor power distribution unit that combines a 630 kVA voltage-transforming transformer and a feeder pillar (low-voltage distribution cabinet). It is a common power supply setup for medium-sized electricity consumers such as residential communities, small factories, and commercial streets.
Feeder Pillar is a metal-enclosed low-voltage distribution cabinet installed at the secondary side of the transformer. It contains circuit breakers, isolating switches, electricity meters, protection relays, and busbars inside.