MIL-DTL-2212K(SH)
APPENDIX A
TECHNICAL CONTENT OF ENGINEERING DRAWINGS
A.1 SCOPE
A.1.1 Scope. This appendix provides guidance for the content of engineering drawings for contactors and
controllers and associated switching devices. This appendix is not a mandatory part of the specification. The
information contained herein is intended for guidance only.
A.2 APPLICABLE DOCUMENTS
A.2.1 General. The documents listed in this section are specified in this appendix. This section does not
include documents cited in other sections of this specification or recommended for additional information or as
examples. While every effort has been made to ensure the completeness of this list, document users are cautioned
that they must meet all specified requirements of documents cited in this appendix, whether or not they are listed.
DEPARTMENT OF DEFENSE STANDARDS
MIL-STD-31000
-
Standard Practice for Technical Data Packages
(Copies of this document are available online at https://quicksearch.dla.mil/ or https://assist.dla.mil.)
INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. (IEEE)
IEEE 315
-
IEEE Graphic Symbols for Electrical and Electronics Diagrams (Including Reference
Designation Letters)
(Copies of this document are available from the Institute of Electrical and Electronics Engineers, Inc., 445 Hoes
Lane, P.O. Box 1331, Piscataway, NJ 08855-1331 or online at www.ieee.org.)
A.3 DRAWINGS
A.3.1 Technical content. Drawings should conform to MIL-STD-31000. Figure A-1 is an example of a
drawing. Drawings should be prepared by the controller manufacturer and contain the following minimum data, as
applicable:
a. List of material, listing the enclosure and all components. Each component should show the description,
quantity, material, material specification, company part or catalog number, and any supplementary descriptive.
b. List of repair parts, listing name of parts. Each part should show piece number, quantity, and company part
or catalog number.
c. Outline of the front and top views of the controller, supplying dimensions and essential details of the
enclosure, including the size and quantity of the mounting bolts required.
d. Connection and schematic diagrams of the control circuit, including connections to associated switching
devices and other remote devices. The rating of all fuses should be indicated. Symbols used on diagrams should
comply with IEEE 315.
e. Description of operation of the controller which identifies function and operation of each device.
Description should include operation in each mode of operation, operation in the event of a loss of power, and
operation in the event of a loss of network (if applicable).
f.
Description of adjustments which can be made on the equipment, such as the range of time for a timing
relay.
g. Table of overload heater or coil catalog numbers, with full load motor current ranges. Not applicable for
solid-state overload relay.
h.
Applicable current transformer data.
i.
Applicable voltage and voltampere rating of control circuit transformers.
j. Table of applicable autotransformer or reactor information, containing turns, wire size and covering, coil
insulation and impregnation, and rating of taps.
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