IEEE C37.60-2003 pdf download

IEEE C37.60-2003 pdf download.IEEE Standard Requirements for Overhead, Pad-Mounted, Dry Vault, and Submersible Automatic Circuit Reclosers and Fault Interrupters for Alternating Current Systems Up to 38 kV
This standard applies to all overhead, pad mounted, dry vault, and submersible single- or multipole alternating current automatic circuit reclosers and fault interrupters for rated maximum voltages above 1000V and up to 38 kV.
In order to simplify this standard where possible, the term recloser/FI (reclosers/FIs) has been substituted for automatic circuit recloser or fault interrupter or both.
NOTE- When reclosers are applied in a substation, special considerations may apply, sce 6.5.1.5.3.
2. References This standard shall be used in conjunction with the following publications. When the following publications are superseded by an approved revision, the revision shall apply.
ANSI C37.06-2000, American National Standard for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis- Preferred Ratings and Related Required Capabilities.”
ANSI C37.06. 1-2000, American National Standard Guide for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis- Designated “Definite Purpose for Fast Transient Recovery Voltage Rise Times.’
3. Definitions
The definitions of terms contained in this standard, and to the related standards for recloser/FIs, shall be in accordance with IEEE Std C37.100-1992. These definitions are not intended to embrace all possible meanings of the terms.
They are applicable only to the subject treated in this standard. unit operation (of a recloser): An interrupting operation followed by a closing operation. The final interruption is also considered one unit operation. NOTE- See Figure 1.
4.1 Usual service conditions Reclosers/FIs conforming to this standard shall be suitable for operation at their standard ratings provided that: .
a) The temperature of the air (ambient temperature) is not above 40 °C or below -30 °C.
b) The atitude does not exceed 1000 m.
c) For submersible units, the water head does not exceed 3m above the base of the enclosure during occasional submersion. Exposure to chemical or electrochemical reactions may be encountered in a subgrade environment.
The subgrade environment may contain chemicals that contribute to mild corrosive reactions.
4.2 Unusual service conditions Unusual service conditions shall include, but are not limited to, service conditions that exceed those defined in 4.1 or extremes in:
a) Actual service duty cycle
b) System conditions
c) Site conditions
d) Shock and/or vibration
e) Damaging fumes or vapors
f) Excessive or abrasive dust
g) Explosive mixtures of dust or gases
h) Salt air or extreme humidity Unusual service conditions shall be brought to the attention of those responsible for the manufacture of the equipment to define or prevent loss of performance or service life, if any, from specified values. Applicable standards such as those for altitude correction shall be used when available.
4.2.1 Abnormal ambient temperatures Reclosers/FIs may be applied at higher or lower ambient temperatures than specified, but performance may be affected and special consideration shall be given to these applications.
4.2.2 Altitudes above 1000 m Reclosers/FIs may be applied at altitudes higher than 1000 m; however, the rated lightning impulse withstand voltage, rated maximum voltage and rated continuous current shall be multiplied individually by the correction factor (see following note) to obtain values at which the application may be made. The rated symmetrical interrupting current, related required capabilities, and interrupting times are not afected by altitude.
5. Rating
5.1 Rating information
The ratings shall include the following:
a) Rated maximum voltage
b) Rated power-frequency
c) Rated continuous current
d) Rated minimum tripping current (series-trip reclosers only)
e) Rated symmetrical interrupting current
f) Rated symmetrical making current
g) Rated lightning impulse withstand voltage
h) Rated control voltage
NOTE- Swithing tests as specified in 6.3 are related required capbilties.
5.2 Rated maximum voltage
The preferred values of rated maximum voltage of reclosers/FIs are those shown in Column 2 of Table 1a) and Table 1b).IEEE C37.60 pdf download.IEEE C37.60-2003 pdf download