What should a 69 kV transformer request include?
Provide base and forced-cooled MVA, exact high- and low-side voltages, maximum system voltage, winding connections, BIL, impedance with its MVA and tap basis, taps, cooling, losses, terminals, accessories, quantity, site, documents, acceptable condition, and needed-on-site date.
- State whether the duty is substation, collector, GSU, network, industrial, or autotransformer service.
- Identify grounding, neutral duty, tertiary requirements, regulation, fault cases, and parallel-operation constraints.
- Include the one-line and existing-unit nameplate for replacement projects.
Is the public ABB 230/69 kV autotransformer a 69 kV high-side transformer?
No. Its reviewed nameplate describes a 230 kV autotransformer with a common winding reconnectable for 69 or 115 kV service and a 13.8 kV delta tertiary. The complete one-line and studies must confirm whether that construction matches the project.
Autotransformer winding duties, common and series winding currents, tertiary function, regulation, grounding, protection, and fault performance differ from a conventional two-winding transformer. A matching 69 kV number alone does not establish suitability.
How can an owner offer a 69 kV transformer?
Submit the OEM, serial, nameplate, MVA stages, complete ratio, BIL, impedance, vector, taps, condition, present country and state, ownership or transfer authority, photos, drawings, tests, included scope, and loading requirements.
Public listings are represented opportunities, not reserved or guaranteed stock. Seller authority, serial identity, present condition, exact location, availability, price, included scope, and delivery require current written confirmation and remain subject to prior sale.
Common questions
Written quotes and supporting records control unit-specific ratings, availability, condition, price, and delivery.
Do you have a 69 kV high-side transformer listed?
No public unit with a 69 kV high-side winding is listed right now. Submit the complete requirement for current sourcing.
Is a 230/69 kV autotransformer public?
Yes. One ABB nameplate-documented record describes reconnectable 69 or 115 kV common-winding service. Condition, quantity, scope, and availability require written confirmation.
Can a 230/69 kV autotransformer replace a two-winding 69 kV transformer?
Do not assume so. The responsible engineering team must approve winding construction, grounding, impedance, taps, protection, fault duty, tertiary use, and every interface.
Can J&J source 69/34.5 or 69/13.8 kV?
J&J can screen either requirement when exact MVA, ratio, duty, vector, BIL, impedance, taps, condition acceptance, site, records, quantity, and required date are supplied.
Can an owner submit a 69 kV transformer?
Yes. Direct owners and properly authorized representatives can use the equipment-offer form with identity, authority, condition, location, photos, and records.
Is availability guaranteed?
Public listings are represented opportunities, not reserved or guaranteed stock. Seller authority, serial identity, present condition, exact location, availability, price, included scope, and delivery require current written confirmation and remain subject to prior sale.