LADWP ELECTRIC STATION
OPERATOR (CIRCUIT BREAKERS,
DISCONNECTS, TRANSFORMERS)
switching---ans-✔✔One-of-the-primary-tasks-of-the-Electric-Station-Operator-is-the-
__________-of-high-voltage-circuits.
50-100---ans-✔✔Electrical-current-may-flow-across-the-contacts-of-____-to-____-
electrical-switches-before-it-reaches-the-consumer.
improper---ans-✔✔The-__________-operation-of-these-electrical-switches-can-pose-a-
serious-hazard-to-personnel,-can-cause-destruction-of-expensive-power-system-
equipment,-and-can-cause-unnecessary-interruption-of-electrical-service-to-consumers.
switches---ans-✔✔Electrical-__________-are-installed-in-the-path-from-the-generator-to-
the-consumer-to-provide-reliability,-flexibility,-and-safeguards-for-the-electrical-power-
system.
emergency---ans-✔✔Operators-use-electrical-switches-to-perform-routine,-automatic,-
and-____________-switching-operations-on-the-electrical-system.
Routine---ans-✔✔___________-switching-is-for-maintenance,-construction,-cleaning,-
testing,-etc.
Automatic---ans-✔✔___________-switching-operations-include-automatic-reclosers-
(ARs),-Voltage-Pickup-Unit-(VPUs),-and-Automatic-Transfer-Switching-(ATSs).
Emergency---ans-✔✔___________-switching-operations-include-insolate-trouble,-
restoration,-4.8kV-Ground-Search,-etc.
Automatic---ans-✔✔The-placement-of-___________-electrical-switches-in-the-power-
system-makes-it-possible-to-limit-both-the-duration-and-the-extent-of-power-outages.
Emergency---ans-✔✔__________-switching-performed-by-Operators-in-usually-in-
response-to-power-outages-and-abnormal-conditions-such-as-overloads.
, manipulation---ans-✔✔The-electrical-function-of-switches-falls-into-two-categories;-
___________-of-relatively-high-values-of-current-and-voltage-under-load-AND-the-
switching-of-circuits-to-provide-a-visual-confirmation-of-de-energization.
Circuit-breakers---ans-✔✔__________-are-electrical-switches-that-are-used-to-
manipulate-high-values-of-current-and-voltage-in-circuits-that-are-carrying-current-or-will-
be-carrying-current-following-the-operation.
Circuit-breakers---ans-✔✔Transformers-and-voltage-regulators-must-be-energized-and-
de-energized-using-__________.
Circuit-breakers---ans-✔✔__________-are-designed-to-open,-close,-energize,-de-
energize,-and-interrupt-normal-and-abnormal-values-of-current-flow-in-electrical-circuits
Disconnects---ans-✔✔__________-are-provided-as-a-method-of-visually-confirming-that-
a-circuit-has-been-"disconnected"-from-specified-sources-of-electrical-energy.
Disconnects---ans-✔✔__________-are-used-to-energize-or-de-energize-short-sections-of-
conductor-such-as-leads-connecting-a-circuit-breaker-to-its-associated-disconnects.
Disconnects---ans-✔✔__________-are-not-designed-to-interrupts-current-flow,-open-or-
close-circuits,-or-energize-and-de-energize-circuits-other-than-short-sections.
10-20---ans-✔✔During-abnormal-conditions,-current-often-exceeds-the-normal-limitation-
of-these-devices-by-as-much-as-_____-to-_____-times-their-normal-rating.
Dielectric-medium---ans-✔✔This-is-the-insulating-mechanism-that-occupies-the-space-
between-the-open-contacts-of-a-CB-and-prevents-the-flow-of-current-through-the-device-
while-the-contacts-are-in-the-open-position.
Dielectric---ans-✔✔The-ability-of-a-substance-to-prevent-the-flow-of-electrical-current-is-
described-as-its-__________-strength.
Conductors---ans-✔✔__________-of-electricity-have-no-dielectric-strength,-as-they-allow-
current-to-flow-in-a-circuit.
Air---ans-✔✔__________,-which-has-a-relatively-high-dielectric-strength,-is-used-as-the-
dielectric-medium-in-many-low-voltage-applications-where-current-values-are-also-low.-A-
common-example-is-the-light-switch-found-in-homes,-etc.
Circuit-Breakers---ans-✔✔Some-of-the-materials-used-in-__________that-have-sufficient-
dielectric-strength-of-for-interrupting-power-system-current-values-are:-Insulating-oils,-
pressurized-inert-gasses,-Sulfur-Hexafluoride-gas,-and-Vacuum-chambers.
Dirt---ans-✔✔___________-and-moisture-in-particular-are-two-elements-that-can-destroy-
the-interrupting-capabilities-of-a-chosen-dielectric-medium.
OPERATOR (CIRCUIT BREAKERS,
DISCONNECTS, TRANSFORMERS)
switching---ans-✔✔One-of-the-primary-tasks-of-the-Electric-Station-Operator-is-the-
__________-of-high-voltage-circuits.
50-100---ans-✔✔Electrical-current-may-flow-across-the-contacts-of-____-to-____-
electrical-switches-before-it-reaches-the-consumer.
improper---ans-✔✔The-__________-operation-of-these-electrical-switches-can-pose-a-
serious-hazard-to-personnel,-can-cause-destruction-of-expensive-power-system-
equipment,-and-can-cause-unnecessary-interruption-of-electrical-service-to-consumers.
switches---ans-✔✔Electrical-__________-are-installed-in-the-path-from-the-generator-to-
the-consumer-to-provide-reliability,-flexibility,-and-safeguards-for-the-electrical-power-
system.
emergency---ans-✔✔Operators-use-electrical-switches-to-perform-routine,-automatic,-
and-____________-switching-operations-on-the-electrical-system.
Routine---ans-✔✔___________-switching-is-for-maintenance,-construction,-cleaning,-
testing,-etc.
Automatic---ans-✔✔___________-switching-operations-include-automatic-reclosers-
(ARs),-Voltage-Pickup-Unit-(VPUs),-and-Automatic-Transfer-Switching-(ATSs).
Emergency---ans-✔✔___________-switching-operations-include-insolate-trouble,-
restoration,-4.8kV-Ground-Search,-etc.
Automatic---ans-✔✔The-placement-of-___________-electrical-switches-in-the-power-
system-makes-it-possible-to-limit-both-the-duration-and-the-extent-of-power-outages.
Emergency---ans-✔✔__________-switching-performed-by-Operators-in-usually-in-
response-to-power-outages-and-abnormal-conditions-such-as-overloads.
, manipulation---ans-✔✔The-electrical-function-of-switches-falls-into-two-categories;-
___________-of-relatively-high-values-of-current-and-voltage-under-load-AND-the-
switching-of-circuits-to-provide-a-visual-confirmation-of-de-energization.
Circuit-breakers---ans-✔✔__________-are-electrical-switches-that-are-used-to-
manipulate-high-values-of-current-and-voltage-in-circuits-that-are-carrying-current-or-will-
be-carrying-current-following-the-operation.
Circuit-breakers---ans-✔✔Transformers-and-voltage-regulators-must-be-energized-and-
de-energized-using-__________.
Circuit-breakers---ans-✔✔__________-are-designed-to-open,-close,-energize,-de-
energize,-and-interrupt-normal-and-abnormal-values-of-current-flow-in-electrical-circuits
Disconnects---ans-✔✔__________-are-provided-as-a-method-of-visually-confirming-that-
a-circuit-has-been-"disconnected"-from-specified-sources-of-electrical-energy.
Disconnects---ans-✔✔__________-are-used-to-energize-or-de-energize-short-sections-of-
conductor-such-as-leads-connecting-a-circuit-breaker-to-its-associated-disconnects.
Disconnects---ans-✔✔__________-are-not-designed-to-interrupts-current-flow,-open-or-
close-circuits,-or-energize-and-de-energize-circuits-other-than-short-sections.
10-20---ans-✔✔During-abnormal-conditions,-current-often-exceeds-the-normal-limitation-
of-these-devices-by-as-much-as-_____-to-_____-times-their-normal-rating.
Dielectric-medium---ans-✔✔This-is-the-insulating-mechanism-that-occupies-the-space-
between-the-open-contacts-of-a-CB-and-prevents-the-flow-of-current-through-the-device-
while-the-contacts-are-in-the-open-position.
Dielectric---ans-✔✔The-ability-of-a-substance-to-prevent-the-flow-of-electrical-current-is-
described-as-its-__________-strength.
Conductors---ans-✔✔__________-of-electricity-have-no-dielectric-strength,-as-they-allow-
current-to-flow-in-a-circuit.
Air---ans-✔✔__________,-which-has-a-relatively-high-dielectric-strength,-is-used-as-the-
dielectric-medium-in-many-low-voltage-applications-where-current-values-are-also-low.-A-
common-example-is-the-light-switch-found-in-homes,-etc.
Circuit-Breakers---ans-✔✔Some-of-the-materials-used-in-__________that-have-sufficient-
dielectric-strength-of-for-interrupting-power-system-current-values-are:-Insulating-oils,-
pressurized-inert-gasses,-Sulfur-Hexafluoride-gas,-and-Vacuum-chambers.
Dirt---ans-✔✔___________-and-moisture-in-particular-are-two-elements-that-can-destroy-
the-interrupting-capabilities-of-a-chosen-dielectric-medium.
