IEEE C37.60-1981 (R1988) pdf free.IEEE Standard Requirements for Overhead, Pad Mounted, Dry Vault, andSubmersible Automatic Circuit Reclosersand Fault Interrupters for AC Systems.
IEEE C37.60  be applied at higher or lower ambient temperatures than specified, but performance may be affected andspecial consideration shall be given to these applications.
Reclosers may be applied at altitudes higher than 1000 m (3300 ft). However, the basic impulse insulation level, ratedmaximum voltage and rated continuous current shall be multiplied individually by the correction factors in Table 1,Columns 3 and 4, to obtain values at which the application may be made. The rated interrupting current, relatedrequired capabilities, and rated interrupting time are not affected by altitude.
Reclosers designed for standard temperature rise may be used at normal current rating without exceeding totaltemperature limits provided that the ambient temperature does not exceed the ambient allowed in 3.1 multiplied by thefactor shown in Column 5 of Table 1.Other Conditions which May Affect Design and Application
Where other unusual conditions exist they should be brought to the attention of those responsible for the manufactureof the equipment. Examples of such conditions are:
1)Abnormal vibration, shocks or tilting.
2)Unusual transportation or storage conditions.
3) Unusual operating duty, frequency of operation, inadequate maintenance, special insulation requirements.4) For overhead, pad mounted, and dry vault reclosers: Exposure to damaging fumes or vapors, excessive orabrasive dust, explosive mixtures of dust or gases, salt air, extreme humidity.
5) For submersible reclosers: Exposure to tidal water, highly acidic water, water containing abnormal amounts
of dissolved road salt or fertilizer, continuous submersion and stray direct currents.
The definitions of terms contained in this standard or in other American National Standards referred to in this standard.are not intended to embrace all legitimate meanings of the terms. They are applicable only to the subject treated in thisstandard
unit operation (of a recloser):An interrupting operation followed by a closing operation.The final interruption isalso considered one unit operation. (See Fig 1.)IEEE C37.60 pdf download.