A-A-50696 Reels, Static Discharge, Grounding, 50 And 75 Foot Cable LengthsThis Commercial Item Description describes industrial type static discharge reels with either 50 or 75 foot cable lengths fully extracted used to dispel static charges from ground support equipment. This Commercial Item Description CID Test Set Synchro provides a crystal controlled phase angle calibration standard. It produces two digitally synthesized, low distortion sine waves. Relative phase angles between two sine wave outputs may be varied by at least 0.002??over the range from ??999.999??. This instrument will provide and measure phase angle signals for development, repair and maintenance of general electronics, navigational aids, satellite and other communications equipment.

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A-A-50696A

3.2 Metals.  Those metals used shall possess low resistivity. Metals other than those specified shall be corrosion resistant or treated to resist corrosion throughout the life of the unit due to contact with fuels, salt spray, or the following atmospheric conditions:

a.   Storage temperatures of -80 degrees F to +160 degrees F

b.   Operational Temperatures between -65 degrees F and +125degrees F

c.   A relative humidity of 95 plus or minus 5 percent

d.   Airborne dust and sand particles encountered in desert operation.

3.3  Fungus-Proof materials.  Materials which are not nutrients for fungi shall be used to the greatest practical extent. Where materials that are nutrients for fungi must be used, such materials shall be treated with a fungicidal agent commercially acceptable and compatible with those materials on which it is to be applied.

3.4  Dissimilar metals.  Unless protected against electrolytic corrosion, dissimilar metals shall not be used in intimate contact with each other.

3.5  Construction.  The reel trough shall be of such size to contain the entire cable lengths as specified herein when in the fully retracted position. When bolted to an appropriate fixture, the reel and base shall be so constructed as to be capable of withstanding a static load of 150-pounds applied at the cable free end grounding device or cable free end when grounding device is not installed.

3.6  Dimensions.  The envelope dimensions of the reel in an upright position shall not exceed 12 inches in height,  11 inches in depth,  and 5 inches in width. For mounting, two ½ inch diameter bolt holes shall be symmetrically located in the base 7 -7/8inches apart on center (see figure 1).

3.7  Mounting position.  The unit shall be capable of operating when mounted in any position about a 360 degree axis.

3.8  Cable outlet guide.  A cable outlet guide shall be provided that will allow the cable to return to the reel from any position within a 90 degree arc to the plane of rotation of the reel without kinking or tangling.

3.9  Automatic rewind.  The reel shall be spring loaded with a spring manufactured from a corrosion resistant steel or one of steel that has been treated to prevent corrosion which will automatically retract the entire length of the cable extension when extended in any direction within 90 degrees from the axis of the cable outlet guide.

3.10  Cable latching mechanism.  The reel shall be equipped with a latching mechanism to release and restore cable tension. After latching has occurred the cable shall remain in an extended position. Further extension of cable shall cause the latching mechanism to release and permit the cable to retract.