Single capacity row · de-energized-tapping catalogue
The 6,300 kVA Yawei row belongs to a 110 kV oil-immersed two-winding catalogue explicitly titled de-energized voltage regulation. Its 4.1/32 kW loss references and shared tap range help prepare an inquiry, but do not describe an on-load voltage-control package or a complete nameplate.
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Jiangsu Yawei Transformer →
CATALOGUE IDENTITY
110 kV series / 6300 kVA catalogue row- Capacity
- 6,300 kVA
- Catalogue losses
- 4.1 / 32 kW
- Tap reference
- Shared ±2 × 2.5%
- Regulation type
- De-energized, manufacturer title
Check the voltage-control requirement before choosing this row
The source heading says de-energized regulation, and the table lists a shared ±2 × 2.5% tap range. Those statements identify the catalogue category. They do not provide the tap apparatus, connection diagram, operating instructions or an on-load control function for the offered unit.
If the project requires voltage adjustment under load or automatic regulation, state that requirement and ask for a separately identified proposal. Do not treat the presence of tap positions as proof of on-load capability. The maker’s approved apparatus documents and the project operating procedures must govern any actual operation; this page is a purchasing reference.
State the required network voltages, allowable operating range and secondary voltage before comparing capacities. Request the exact ratio, tap schedule, connection, frequency and regulation arrangement together on the returned rating sheet. An unspecified 110 kV class is not a complete project voltage requirement.
Source notes: [P1]
Read the first row and its shared options
The first capacity entry publishes 6,300 kVA, no-load current 0.5%, impedance 10.5%, no-load loss 4.1 kW and load loss 32 kW, with YNd11 connection. The original losses are already in kW. The reviewed table gives no load-loss reference temperature or selected-unit tolerances.
The high-voltage cell contains 110 followed by unclear additional text. That ambiguity is preserved as a question rather than reconstructed into an assumed voltage list. The low-voltage cell lists 6.3, 6.6 and 10.5 kV for this portion of the table. Ask the maker to confirm one combination and all relevant shared-cell data against the actual design.
The surrounding introduction covers broader power-transformer capability and mentions tests on SSZ20-240000/220. That 220 kV reference is a different named product, not test evidence for this unnamed 6,300 kVA row. Request documents applicable to the selected 6.3 MVA design.
Scroll this table to read every column →
| Item | Published reference | Buyer action |
|---|---|---|
| Capacity | 6,300 kVA | Exact offered model still required. |
| No-load / load loss | 4.1 / 32 kW | Request current guarantees and reference temperature. |
| No-load current | 0.5% | Confirm measurement basis and tolerance. |
| Connection / impedance | YNd11 / 10.5% | Check applicability and selected configuration. |
| LV choices | 6.3 / 6.6 / 10.5 kV | Choose one; do not assume arbitrary combinations. |
Source notes: [P1]
Build a complete offer and release dossier
Ask the supplier to return the selected electrical schedule, cooling ratings, oil specification, temperature limits, dielectric requirements, protection interfaces and accessories. Provide actual site altitude, ambient and exposure. The page’s general reliability and low-noise description does not define these operating limits or numerical guarantees.
The reviewed row gives no installed dimensions, transport mass, oil quantity or terminal positions. Obtain final drawings and separate installed/shipping masses, oil condition, lifting information and foundation interfaces. Include clearances, access and service requirements in the site brief so the proposal can be checked before installation work.
Agree the factory-test programme, witness points and signed records. Match every report’s equipment identity and conditions to the proposed design, keeping corporate credentials and other-model tests separate. Require installation/maintenance instructions and the approved tap apparatus documentation at handover.
No verified price or lead time is available. Ask for a dated itemized offer covering the transformer, oil, tap apparatus, cooling/accessories, tests, packing, transport and site support. Specify currency, trade term and validity. Separate technical approval, manufacture, tests, release, dispatch and destination arrival, with a clear event starting lead time.
Freeze the regulation choice
Confirm whether de-energized taps meet the project duty; obtain a different identified proposal if needed.
Approve the rating and interfaces
Resolve ratio, shared cells, cooling, terminals and final physical drawings.
Approve release and delivery
Align guarantees, matched reports, manuals, commercial scope and dated milestones.
Source notes: [P1]
Prepare a configuration-specific inquiry
Define the required voltage-control duty before selecting tap apparatus.
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Buyer questions
Does ±2 × 2.5% mean on-load regulation?
No. The source title explicitly identifies de-energized regulation; obtain a separate proposal if on-load operation is required.
Is 110 kV enough to define the ordered ratio?
No. Specify the exact primary/secondary voltages, taps and connection, resolving the unclear table wording.
Are the loss values current guarantees?
They are catalogue figures without a reference temperature or selected-unit guarantee here. Request a current signed schedule.
Do the 220 kV test claims apply to 6,300 kVA?
No applicability is established. Ask for evidence matched to the proposed design.
Sources and research scope
Manufacturer material reviewed on 14 October 2026. Published facts and buyer recommendations are distinguished in the sections above. No verified current price, lead time or independent unit test was established.
View 1 research records
Original 6,300 kVA row, shared tap/connection/impedance/LV choices and de-energized heading. Ambiguous HV text and unmatched 220 kV test claim handled explicitly.
2026-10-14 · Original manufacturer page read in browserSource references and archived material are retained in the editorial record. Report a correction or provide a current datasheet →