Protective Devices
What device is considered watch dogs of the system?
Protective Relays
equipment provides the means for centralizing those devices used for switching and interrupting circuits?
pneumatic
hydralic
motor charged spring
solenoid
motor
manual
Who is qualified to work on high voltage conductors?
QEW
FO
FA
FOA
FO/FA
forced oil
forced air
forced oil with convection
forced oil and forced air
What protective device is adjustable?
Relays
CLEARANCE DEFINITION?
Work authority issued by the LD or their field representative that states the specified circuit, circuit component, or equipment is disconnected or isolated from SPECIFIED SOURCES OF ENERGY. It is assurance to the authroized person recieving the clearance that the equipment will remain isolated or disconnected until the holder releases the clearance. work specified when issued.
sf6
oil
vacuum
airblast
Transformers do what?
Insulators petticoat also known as?
SKIRTS
interrupting device that is nonadjustable?
FUSE
who is the water steward?
Zanjaro
How many steps for regulator ONE way?
16
Most common tap changer?
No load tap changer
operating order 1
operating order 2
operating order 3
operating order 5
operating order 8
operating order 18
definitions
work on or near high voltage equipment
grounding
tagging
in and out of service equipment
admission to stations
Circuit interrupting device that acts in half a cycle time?
Fuse
What diagram shows all circuits and device elements of the equipment?
Schematic diagram (elementary)
Nominal voltage of DS?
34.5kv
4.8kv
Name the 34.5kv side configuration and the 4.8kv side configuration we discussed?
Ring bus
4.8kv sectionalized main bus
50
51
52
87
86
90
instantaneous
time delayAC CB
lock out
differential
regulator
protective relay scheme operates on what?
Specified work
specified equipment
specified conditions
OK TO
Transformer has a 10:1 ratoi, secondary voltage is 416V. primary voltage is?
4160
What substation takes high voltage to distributing voltage?
Receiving station
What comes first in the sequence of events under a clearance?
A. The Authorized Person in charge of the work checks the Disconnection where applicable, checks for the presence of voltage where feasible, applies grounds, and takes other safety precautions.
B. Load Dispatcher has the switching performed and confirms the application of Accident Prevention Tags. Verify prior to receiving clearance
B