Extended Period Emergencies. Equation (1), above, can be adjusted to calculate current loadings for the periods associated with Long Time Emergency (LTE) conditions: Ie(lt) = Ir ⎛ θ max( e) − θa ⎞ 0.5 Equation (3) θr Where: Ie(lt) is the permissible Long Time Emergency current, andθ max( e) is the allowable maximum temperature under emergency conditions, being 20°C greater than the values of θ max as provided in Table 2 of ANSI/IEEE Standard 37.30-1997.
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Sources: Procedures for Determining and Implementing Transmission Facility Ratings
Extended Period Emergencies. Equation (1), above, can be adjusted to calculate current loadings for the periods associated with Long Time Emergency (LTE) conditions: Ie(lt) = Ir ⎛ θ max( e) − θa ⎞ a 0.5 Equation (3) θr r Where: Ie(lt) is the permissible Long Time Emergency current, andθ and max( e) is the allowable maximum temperature under emergency conditions, being 20°C 20C greater than the values of θ max as provided in Table 2 of ANSI/IEEE Standard 37.30-1997.
Appears in 1 contract
Sources: Procedures for Determining and Implementing Transmission Facility Ratings