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|  MIL-T-15108C(NAVY)
3.27.3 Size.
Size of cable compartments shall be as specified in table III.
Table III - Cable compartments.
Distance
between lead
kVA size
support and
cover
Inches
1.....
4
3.....
4
5
5....
5-1/2
7.5 . . . . .
6
10. . . . . . . .
8
15 . . . . .
25 . . . . . . .
8-1/2
37.5 . . . . . .
10
11
50 . . . . .
11-3/4
75 . . . . .
14-1/2
100 . . . . .
3.28 Cable leads. Cable leads for transformers shall be in accordance with MIL-W-16878.
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Minimum length of the leads shall be the height of the cable compartment.
Transformer leads shall be marked in accordance with
3.28.1 Cable lead markings.
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MIL-STD-195. Markings shall be stamped on aluminum cable bands.
3.29 Impedance. Impedance values for transformers of the same size, design, and type
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shall vary from the value shown on the drawings by not more than plus or minus 7-1/2 percent.
3.30 Technical data. The supplier shall prepare drawings (figure 3 is a typical trans-
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former drawing) , certification data sheets, test procedures and reports, calculations, and
an inspection system plan in accordance with the data ordering documents included in the
contract or order (see 6.2.2).
3.30.1 Drawings. In addition to the drawing content required by the data ordering
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document, the following unique technical features shall be included:
(a) Manufacturer's name.
(b) List of descriptive data including:
(1) Enclosure.
(2) Rating (kVA, phase, Hz).
(3) Duty .
(4) Maximum temperature rise.
(5) Maximum ambient temperature.
(6) Shock classification.
(7) Mounting.
(8) Polarity.
(9) Type (including voltage ratio and group nunber).
(10) Insulation class.
(11) National stock number.
(c) Weight and volume of equipment.
(d) Finish, including method of treatment of enclosure for painting,
color, and applicable specification of paint.
(e) Method of impregnation of windings including step-by-step procedure.
(f) Table of coil lead data with corresponding volts, bare wire diameter,
insulated wire diameter number of wires in stranding, size of wire,
and insulation.
(g) Sectional view of windings and insulation.
(h) A table of insulation indicating the location, insulation material,
thickness and type used, and the applicable specifications and
remarks.
(i) Description of the application of insulating materials, where used,
including location and manner of application of tape, cord, sleeving,
or similar material.
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