400 kVA Oil-Immersed Transformer
Request a 400 kVA oil-immersed transformer quotation for your project. A replacement inquiry often begins with a 400 kVA nameplate. Confirm whether the task is a like-for-like replacement or a change in voltage, load or installation arrangement before using the old unit as the specification. Confirm the voltage ratio, installation and accessory scope against the actual duty; the fields below distinguish the requested capacity from project-specific engineering inputs.
- Rated capacity400 kVA
Specifications
400 kVA - Reference schedule for quotation · Revision 2. Confirmed values apply as listed. Configuration options and project confirmation items are settled in the quotation for your specification.
| Parameter | Value | Status |
|---|---|---|
| Rated capacity | 400 kVA | Confirmed |
| Reference data basis | S13-M-400/10Third-party published reference design for preliminary comparison, not Zoe guaranteed performance. Source and limitations are in the linked reference sheet. | Project confirmation |
| Reference voltage ratio | 10 / 0.4 kV10/0.4 kV is a selected reference combination from the manufacturer series, not a Zoe design approval. The Russian table leaves LV blank at 1600 kVA and above; the English series table declares 0.4 kV. | Project confirmation |
| Reference frequency | 50 HzSelected reference duty, not a dual-frequency nameplate. The project offer must match the actual supply. | Project confirmation |
| Reference phases | Three phaseBalanced three-phase reference selection. | Project confirmation |
| Reference connection group | Dyn11Compare neutral, earthing, phase displacement and parallel-operation requirements before ordering. | Project confirmation |
| Reference cooling | Oil-immersed, natural cooling reference arrangementReference arrangement only. No fan-assisted overload allowance is implied. | Project confirmation |
| Reference tapping | Off-circuit, +/-2 x 2.5% reference selectionAdjustment is de-energized; not automatic on-load voltage regulation. | Project confirmation |
| Reference impedance | 4%As listed for the source design; verify the test basis in the project offer. | Project confirmation |
| Reference no-load loss | 410 WPublished value for the named reference design; not a Zoe test result or purchase guarantee. | Project confirmation |
| Reference load loss | 4,520 WPublished W value. This source does not declare a correction temperature; do not use it as a 75 C guarantee or compare losses across different temperature bases. | Project confirmation |
| Reference overall envelope | 1310 x 830 x 1340 mmPublished outside L x W x H and total mass of the named reference design; not foundation, transport-clearance or manufacturing dimensions. | Project confirmation |
| Reference total mass | 1,430 kgTotal mass of the cited reference design. Shipping splits and the offered assembly may differ. | Project confirmation |
| Reference insulating-oil mass | 260 kgOil quantity of the cited reference design, not a site oil-containment calculation. | Project confirmation |
| Reference site conditions | Up to 40 C ambient; altitude up to 1000 mSource normal-service limits, not approval for all sites. Higher altitude, heat, harmonics or unusual duty require a different design review. | Project confirmation |
| LV current calculation at 400 V | Approximately 577 ACalculated from 400 kVA / (sqrt(3) x 0.4 kV). This is not a cable or protection selection. | Project confirmation |
- Confirmed Applies to this configuration as listed
- Configuration option Choose in your inquiry; reviewed for the quotation
- Project confirmation Fixed by your specification and the technical agreement
Attach your specification or nameplate and the reply will follow this parameter schedule.
Structure And Details
Additional views of 400 kVA - Reference schedule for quotation. Final outline, terminals and fittings follow the agreed configuration.
Where This Configuration Fits
A replacement inquiry often begins with a 400 kVA nameplate. Confirm whether the task is a like-for-like replacement or a change in voltage, load or installation arrangement before using the old unit as the specification.
Replacement without changing every interface: Compare foundation fixings, bushing positions and cable reach, not just tank dimensions. State which existing fittings and protection devices will be retained and which may be replaced. A capacity match alone does not establish electrical compatibility or suitability for the installation.
Installation And Operating Conditions
Check these points before fixing the layout or approving the foundation. Final clearances and interfaces come from the configuration-specific outline.
Installation And Interfaces
Compare foundation fixings, bushing positions and cable reach, not just tank dimensions. State which existing fittings and protection devices will be retained and which may be replaced.
Provide foundation dimensions, clearances, drainage or oil-containment requirements and the HV/LV cable approach. Identify the final location and access needed for inspection and maintenance. Local installation requirements belong to the site design.
Operating Conditions
Describe the ambient temperature range, altitude, expected load profile and exposure to dust, moisture, salt or other site conditions. Include important starting events and nonlinear loads. These inputs can change the engineering review even when the requested capacity stays the same.
For outdoor service, state the site exposure, protection and inspection requirements. Cooling surfaces, cable routes and service access should remain compatible with the final compound arrangement.
What The Quotation Covers
To prepare a replacement package with an explicit list of retained interfaces, send the requested 400 kVA rating, HV/LV voltages, frequency, quantity and project destination. Attach the specification or provide its relevant requirements in your message.
Separate the transformer and agreed accessories from switching equipment, external cables or busduct, foundations, installation and commissioning by others. Request a parameter and deviation schedule with the quotation, then agree the outline and document stages for the order.
Documents
-
Reference parameter sheet and envelope · Rev. REF-1
Attributed third-party reference values and a simplified bounding envelope. Not a factory-guaranteed datasheet, fabrication drawing or installation approval.
Download
How To Start Your Inquiry
Distributors: state the order quantity, destination and which specifications must repeat across units. EPC teams: include the technical schedule, document milestones and scope boundaries. Plant teams: provide the existing nameplate and changed load or installation conditions for replacement work.
If the voltage or installation arrangement is not yet fixed, describe what is known and ask for selection advice. No configuration needs to be preselected to start an inquiry.
Send the specification you have today. A partial one is fine: the reply lists what still needs confirming before the quotation is comparable.
Request a QuotationBefore You Send The Inquiry
Is 400 kVA the same as 400 kW?
No. kVA is apparent power; kW depends on power factor. At an assumed power factor of 0.8, 400 kVA corresponds to 320 kW. This calculation is not a complete sizing check: starting duty, harmonics, ambient conditions and operating requirements also need review.
What LV current should I use when discussing this 400 kVA unit?
For a balanced three-phase calculation, 400 kVA gives approximately 577 A at 400 V or 556 A at 415 V. State the actual secondary voltage. Cable, busbar, switchgear and protection selection require the applicable design calculations and installation conditions.
What should be settled before comparing quotations?
Use a replacement package with an explicit list of retained interfaces as the comparison basis. Compare foundation fixings, bushing positions and cable reach, not just tank dimensions. State which existing fittings and protection devices will be retained and which may be replaced.
Are dimensions, losses and accessories fixed by this capacity page?
No. Request the values and included accessories for the proposed voltage, construction and cooling duty. Keep the electrical schedule, outline and commercial scope tied to the same offered configuration and revision.
Send Your Project Requirements
Share what you know about the project and the reply will follow the parameter schedule above. No configuration selected means you want selection advice, which is fine.
- Rated capacity and voltage ratio
- Frequency, quantity and destination
- Project specification, or the existing nameplate for a replacement
- Site conditions, room or outdoor layout and delivery route
