MIL-DTL-28778 Transformer, Power, Stepup, 3 PhaseThis specification covers the requirements for a high power transformer, using single unit, 3- legged core construction, supplying rectified loads to be used in Navy shore transmitters. These units are sealed, metal encased with either separately fabricated headers and terminals or both.

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MIL-DTL-28778A

6. NOTES

(This section contains information of general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Intended use. This transformers is intended for use at transmitter shore stations.

6.2 Acquisition requirements. Procurement documents should specify the following:

(a)

Title, number and date of this specification.

(b)

Type, size, exposed length of screw terminal (see 3.5.2).

Whether paint is required on mounting area surface (see 3.5.5).

(c)

(d)

Marking for voltage ratings, if required (see 3.18).

Number of first article samples to be submitted, if other than specified in 4.5.

(e)

(f)

Temperature rise, if other than specified (see 4.6.9).

Levels of preservation and packaging and packing and applicable marking (see section 5).

(g)

6.3 First article. Invitations for bids should provide that the Government reserves the right to waive

the requirement for first article samples as to those bidders offering a product which has been previously procured or

tested by the Government, and that bidders offering such products, who wish to rely on such production or test, must

furnish evidence with the bid that prior Government approval is presently appropriate for the pending procurement.

6.4 Subject term (key word) listing.

Printed Circuit board

6.5 Changes from previous issue. Marginal notations are not used in this revision to identify changes with

respect to the previous issue due to the extent of the changes.

Custodians:

Preparing Activity

Navy - EC

DLA - CC

(Project 5950-1189)

NOTE: The activites listed above were interested in this document as of the date of this document. Since

organizations and responsibilities can change, you should verify the currency of the information above using the