Flash cards
True or false. Use of a rope lanyard is required every time you have to unbelt to move around an obstacle.
True
True or false when climbing towers you should check members such as braces and ladder rungs before placing weight on them.
True
True or false. Ladder should be placed at proper angle maintaining 25% of extended length as the required distance from the foot of the ladder to the vertical support.
True
True or false. Access to substations is restricted to people with at least a minimum of 5 years of experience.
False
A barricade may be crossed:
A:to answer the phone
B:to get another tool
C: for an emergency
D: none of the above
C
True or false. A barricade is a physical obstruction such as tapes, flags, cones, intended to provide a warning about and limit access to a hazardous area.
True
Which of the following devices alarms at 95C on most transformers.
A: winding temp device
B: oil flow device
C: liquid temp device
D: pressure relief device
C
All fall protection equipment should be stored
A: dry places
B: out of direct sunlight
C: in dedicated protective bags
D: all of the above
D
Which of the following devices relieves pressure instantaneously and has a visible mechanical indicator
A: rapid rise pressure relay
B: winding temp device
C: mechanical pressure relief device
D: none of the above
C
Which of the following devices sends an alarm when the oil approaches a point too for safe operation?
A: oil flow device
B: gas detector relay
C: winding temp gauge
D: liquid level gauge
D
Switched capacitors can be controlled by
A: time
B: current
C: voltage or voltage controlled
D: current compensated
E : all of the above
C
Name one of the two benefits of capacitors in a distribution substation.
Reduction of system losses and voltage improvement
Never purge air from the receiver tank when the temp is below
A: 40F
B: 50F
C: 42 F
D: 55F
A
A motor operated switch is normally {select incorrect answer}.
A: connected to a single blade disconnected switch
B: can be supervisory controlled
C: can have a remote controls
D: connected to a group operated disconnect switch
A
Why is it important to run an LTC or regulator through neutral
A: to check the oil level
B: exercise reversing switch
C: give customers high and low voltage
D: all of the above
B
When inspecting motor operator, inspect for
A: operation of heaters
B: position/location of mechanical coupling
C: proper operation of lights
D: all of the above
D
During station inspection of the LTC and regulator controls, you should
A: record position of drag hands
B: manually operate to raise and lower
C: listen for abnormal noises
D: all of the above
D
List 5 items that must be checked when inspecting vacuum interrupters
The actuator arm is engaged in the cradle of the movable contact
Condition of insulators
Connections
Vacuum modules condition of chambers
Motor operator and heaters
The vacuum bottle provides a method of ?
Breaking load or energizing currents
Which of the following devices warns of a pump problem or an obstruction in the oil flow path?
A: liquid level gauge
B: oil flow gauge
C: oil warning light
D: none of the above
B
Which color of light represents a closed motor operated switch?
A: amber
B: green
C: red
D: orange
C
True or false
All ground connections shall be checked each time you enter the substation.
True
True or false
Current transformers provide isolation between the secondary circuit and the primary circuit
True
Which color indicating light monitors the trip circuit of a breaker?
A: white
B: green
C: red
D: blue
C
Check the condition of the low side terminal box for
A: corrosion/moisture
B: condition of fuses
C: insects
D: all of the above
D
True or false
A white light is used to monitor lock out relay coil circuits.
True
True or false
There is no need to look at the bus work in the air if you find no broken insulators on the ground.
False
List any 3 uses of a PT
They reduce high voltage to 120 to 240v
They provide safe low voltage capacity
Make safe to use with wattmeters, watt hour meters, protective relays and indicating lights
When you find an oil level gauge that is in the low position, you should
A: add oil
B: add nitrogen
C: call DEC
D: look for leaks
D
True or false
Electronic recliners are installed on all classes of distribution and transmission voltages
True
True or false
Substation diesel generators provide essential control voltage and power to operate the substations equipment in the event of a loss of station service
True
True or false
it is important to record the relay target information on the circuit breaker operation counter card
True
How often are electronic reclosers inspected
A: weekly
B: every other week
C: monthly
D: every other month
C
Diesel generators used to supply backup power in our substations are inspected
A: annually
B: every other month
C: monthly
D: quarterly
A
Puffer switches must have sufficient sf6 gas to adequately interrupt load/fault currents. This is verified by
A: PSIG
B: pressure indicator
C: blue light
D: all of the above
A
False battery voltage can occur when the ambient temp is below ____F
20
The interrupting medium for the SF6 puffer switch , circuit switcher, transrupter switch is.
A: oil
B: vacuum
C: sulfur hexafloride gas
D: water
C
Substation diesel generators are normally located in nysegs_____ and _________ substations?
A: 115kV, 230kV
B: 34.5kV, 115kV
C: 230kV, 345kV
D: none of the above
A
True or false
Electronic reclosers are used on circuits with high magnitude short circuit currents
False
True or false
There is no reason to inspect a mobile substation while it is in storage
False
If there is an indication of low SF6 gas, what action must be taken?
Report to supervisor
True or false
Scetionalizers interrupt fault currents
False
True or false
Float voltage should be taken from the charger nameplate
False
The voltage detecting device shall be tested ______and ______using it on the lines to be grounded to ensure that the device is functioning properly.
Before after
Name 3 items to be performed on a battery charger inspection
Ground light
Ground relay
Ground detection switch
Low voltage relays
High dc voltage
Loss of ac relays
Which of the following devices are commonly used to protect the electrical system from the dangers associated with faults.
A: fuses
B: circuit breakers
C: reclosers
D: transformers
B
How often are mobile substations inspected while in service
A: weekly
B: every other week
C: monthly
D: every other month
A
Power is measured in?
Watts
______are used in distribution substations to regulate the load side voltage.
Regulators
