630 kVA 10/0.4 kV Oil-Immersed Transformer
A three-phase, oil-immersed distribution transformer for a 630 kVA, 10 kV to 400 V requirement, with off-circuit tap adjustment. Use this specification as the starting point for a new installation, replacement or project quotation. Frequency, connection group, losses and installation interfaces are defined in the project quotation.
- Rated capacity630 kVA
- Voltage ratio10 / 0.4 kV
- Tap changerOff-circuit tap changer
Specifications
630 kVA - Reference schedule for quotation · Revision 3. Confirmed values apply as listed. Configuration options and project confirmation items are settled in the quotation for your specification.
| Parameter | Value | Status |
|---|---|---|
| Rated capacity | 630 kVA | Confirmed |
| HV winding rated voltage | 10 kV | Confirmed |
| LV winding rated voltage | 0.4 kV | Confirmed |
| Tap changer | Off-circuit tap changer | Confirmed |
| Phases | Three phase | Confirmed |
| Reference data basis | S13-M-630/10Third-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 | 4.5%As listed for the source design; verify the test basis in the project offer. | Project confirmation |
| Reference no-load loss | 580 WPublished value for the named reference design; not a Zoe test result or purchase guarantee. | Project confirmation |
| Reference load loss | 6,200 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 | 1490 x 980 x 1410 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 | 1,830 kgTotal mass of the cited reference design. Shipping splits and the offered assembly may differ. | Project confirmation |
| Reference insulating-oil mass | 330 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 909 ACalculated from 630 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 630 kVA - Reference schedule for quotation. Final outline, terminals and fittings follow the agreed configuration.
Where This Configuration Fits
Consider this voltage ratio where the project requires three-phase transformation from 10 kV to 400 V. For a factory expansion, provide the connected and future load schedule. For replacement, electrical ratings and mechanical interfaces both need to match.
An 11 kV supply, a different secondary voltage or continuous on-load regulation is a different requirement; identify it in the inquiry instead of treating it as the same configuration.
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
Check the transformer position, delivery route, lifting access, foundation and maintenance space before fixing the layout. For a replacement, send the existing outline, terminal arrangement and nameplate details.
Confirm HV/LV cable or busbar connection, neutral and earthing interfaces, clearances and any enclosure requirement. Foundation and cable design should use the final configuration-specific outline, not a generic 630 kVA drawing.
Operating Conditions
Provide the site altitude, maximum and minimum ambient temperature, indoor or outdoor location, ventilation and exposure to dust, moisture or salt. Include the expected load profile, large motor starts and significant nonlinear loads.
Oil containment, fire separation, protection settings and installation compliance belong to the project design and local requirements; transformer capacity alone does not settle these issues.
What The Quotation Covers
For a comparable quotation, state quantity, destination, required delivery window and the applicable technical specification. List required terminals, fittings, monitoring devices and accessory interfaces rather than assuming every item shown in a generic catalogue is included.
Request the proposed parameter schedule and deviations during quotation. Agree the outline and interfaces before manufacture, and define inspection, test records, packing and shipping documents in the order. Price and schedule depend on the confirmed scope.
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
Send your specification for a project quotation, or begin with capacity, voltage ratio, frequency, quantity and destination if the specification is still being prepared. EPC inquiries should identify required drawings, review stages and the supply boundary.
For repeat orders, reference the previous agreed configuration and list changes. For replacements, include the existing nameplate and installation constraints. The quotation should identify the electrical basis, included accessories and documents so you can compare offers consistently.
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
Does 630 kVA mean the transformer supplies 630 kW?
No. kVA is apparent power; real power in kW depends on power factor. Selection also needs the load profile, starting requirements and site conditions, not just the sum of equipment kW.
Is off-circuit tapping the same as on-load regulation?
No. This product scope uses off-circuit tap adjustment, not automatic regulation while supplying the load. If continuous voltage regulation is required, state that separately so the tap-changing arrangement can be reviewed.
Can this replace an existing 630 kVA transformer?
Capacity alone is insufficient. Compare voltage ratio, frequency, vector group, impedance, terminals, footprint and operating conditions. Send the existing nameplate and interface information with the inquiry.
Can I use a generic outline to build the foundation?
Use the outline for the agreed configuration. Tank arrangement, terminals and accessories can change overall dimensions and access requirements. Generic catalogue dimensions are not a foundation approval.
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
