As shown in figure "B" of the illustration, the self-test of the OCR performance is applied with a setting of 6 times the full load current and a trip time of 10 seconds is observed, which agrees with the manufacturers current/time characteristics. According to figure "C" of the illustration, under actual operation, how long would the trip time be if the motor was drawing 3 times the full load amperage due to a mechanical overload? See illustration EL-0172.

Study on the go
Take your USCG credential exam practice questions offline with the mobile app.
Download AppRelated Questions
The pressure of a liquid leaving the pump can be referred to as the __________.
View questionThe depth of fuel oil in a tank is normally measured through the __________.
View questionEach pressure gage used in an oil transfer operation must be accurate to within...
View questionWhy is it occasionally necessary to verify the accuracy of the distilled water m...
View questionAs a DC armature revolves within a stationary magnetic field, the reversals of m...
View questionWhat is the twisting force developed by a motor and applied to a shaft called?
View questionAn electrical connection between the wiring of an electric motor and its metal f...
View questionWhat is the unit of measure for electrical resistance?
View questionWhat is the correct name for current that flows in only one direction?
View questionWith respect to motors, how is ambient temperature defined?
View question