Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.015 seconds
[en] This information notice is being provided to alert addressees to potential problems resulting from motor-operated valves (MOVs) not developing rated torque because of the failure of the original cable sizing calculations to include the proper current values and cable resistances. From the presented information, it can be seen that the required current for the MOV to develop the design torque should be based on the motor resistance and the cable resistance (i.e., four times that of a single cable) under a minimum postulated bus voltage. As indicated in their August 17, 1988, maintenance update, Limitorque recommends that the cable be sized to allow for five times full load current flow at the minimum voltage condition. This maintenance update also contained a method for calculating the maximum current draw at locked rotor conditions
Source
Anon; 1360 p; ISBN 1-55937-206-0; 
; 1992; p. 5, Paper 105; IEEE Standards Press; Piscataway, NJ (United States); IEEE Standards Press, Institute of Electrical and Electronics Engineers, Inc., 445 Hoes Lane, Piscataway, NJ 08855-1331 (United States)
; 1992; p. 5, Paper 105; IEEE Standards Press; Piscataway, NJ (United States); IEEE Standards Press, Institute of Electrical and Electronics Engineers, Inc., 445 Hoes Lane, Piscataway, NJ 08855-1331 (United States)