failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor vibration?

Choices:
- oil quality deterioration
- failure to function on demand
- external leakage process medium
- overheating
- de-energized tap-changer condition/ fault
- failure to close on demand
- external leakage — utility medium
- core looseness
- winding looseness
- on-load tap-changer condition/ fault


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor vibration?

Choices:
- loss of buoyancy
- on-load tap-changer condition/ fault
- core looseness
- vibration
- de-energized tap-changer condition/ fault
- spurious low alarm level
- high output
- winding looseness
- arcing/ electrical discharge
- spurious stop


failure_mode_sensor_analysis

Question: When the sensor vibration in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- failure to lock/unlock
- mooring failure
- low output
- core looseness
- on-load tap-changer condition/ fault
- premature closure
- sludge build-up
- de-energized tap-changer condition/ fault
- winding looseness
- connection/ bushing faults


failure_mode_sensor_analysis

Question: When the sensor vibration in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- erratic output
- delayed operation
- overheating/ auxiliary cooling system fault
- failure to lock/unlock
- breakdown
- de-energized tap-changer condition/ fault
- faulty output frequency
- winding looseness
- on-load tap-changer condition/ fault
- core looseness


failure_mode_sensor_analysis

Question: What is the irrelevant failure event for power transformer if the sensor vibration exhibits an abnormal reading?

Choices:
- delayed operation
- de-energized tap-changer condition/ fault
- winding looseness
- insufficient heat transfer
- core looseness
- loss of buoyancy
- spurious low alarm level
- low oil level
- breakdown
- on-load tap-changer condition/ fault


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor vibration registers an abnormal reading?

Choices:
- de-energized tap-changer condition/ fault
- failure to set/retrieve
- core looseness
- insufficient power
- on-load tap-changer condition/ fault
- failure to open on demand
- external leakage - fuel
- oil circulation system problem
- delayed operation
- winding looseness


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor vibration in power transformer, which failure event is not relevant?

Choices:
- winding distortion
- winding looseness
- failure to regulate
- de-energized tap-changer condition/ fault
- failure to lock/unlock
- internal leakage process medium
- external leakage utility medium
- on-load tap-changer condition/ fault
- core looseness
- no output


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor vibration shows an abnormal reading?

Choices:
- vibration
- failure to close on demand
- winding looseness
- spurious operation
- load drop
- on-load tap-changer condition/ fault
- oil leak
- core looseness
- very low output
- de-energized tap-changer condition/ fault


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor vibration has an abnormal reading?

Choices:
- delayed operation
- failure to start on demand
- on-load tap-changer condition/ fault
- spurious stop
- heating failure
- external damage/ disturbance
- core looseness
- loss of buoyancy
- de-energized tap-changer condition/ fault
- winding looseness


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor vibration shows an abnormal reading?

Choices:
- winding looseness
- stuck
- failure to close on demand
- through fault e.g. lightning strike
- breakdown
- insufficient power
- core looseness
- on-load tap-changer condition/ fault
- de-energized tap-changer condition/ fault
- high output


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor vibration in power transformer, which failure event is not relevant?

Choices:
- core looseness
- on-load tap-changer condition/ fault
- premature closure
- control-line-to-well communication
- winding looseness
- external leakage process medium
- de-energized tap-changer condition/ fault
- insufficient heat transfer
- supply faults, e.g. excessive harmonics and over fluxing
- minor in-service problems


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor power factor/tanδ registers an abnormal reading?

Choices:
- failure to rotate
- failure to start on demand
- connection/ bushing faults
- arcing/ electrical discharge
- failure to function as intended
- moisture ingress/ content
- oil quality deterioration
- control-line-to-well communication
- on-load tap-changer condition/ fault
- external leakage — utility medium


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor power factor/tanδ in power transformer, which failure event is not relevant?

Choices:
- insufficient power
- failure to open on demand
- de-energized tap-changer condition/ fault
- connection/ bushing faults
- insulation deterioration
- through fault e.g. lightning strike
- moisture ingress/ content
- failure while running
- failure to regulate
- external leakage - fuel


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor power factor/tanδ has an abnormal reading?

Choices:
- insulation deterioration
- loss of buoyancy
- moisture ingress/ content
- external leakage process medium
- through fault e.g. lightning strike
- overheating/ auxiliary cooling system fault
- spurious operation
- low output
- heating failure
- arcing/ electrical discharge


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor power factor/tanδ has an abnormal reading?

Choices:
- arcing/ electrical discharge
- failure to cut
- oil quality deterioration
- external leakage utility medium
- through fault e.g. lightning strike
- external leakage process medium
- insulation deterioration
- low oil level
- internal leakage utility medium
- leakage in closed position


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor power factor/tanδ in power transformer, which failure event is not relevant?

Choices:
- external leakage — utility medium
- failure to open on demand
- vibration
- low output
- insufficient heat transfer
- arcing/ electrical discharge
- moisture ingress/ content
- through fault e.g. lightning strike
- insulation deterioration
- oil circulation system problem


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor power factor/tanδ registers an abnormal reading?

Choices:
- insulation deterioration
- faulty output voltage
- loss of buoyancy
- moisture ingress/ content
- internal leakage utility medium
- connection/ bushing faults
- winding distortion
- sludge build-up
- arcing/ electrical discharge
- breakdown


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor power factor/tanδ in power transformer, which failure event is not relevant?

Choices:
- spurious stop
- connection/ bushing faults
- oil quality deterioration
- stuck
- external leakage - process medium
- breakdown
- through fault e.g. lightning strike
- moisture ingress/ content
- high output
- winding looseness


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor power factor/tanδ shows an abnormal reading?

Choices:
- connection/ bushing faults
- internal leakage
- through fault e.g. lightning strike
- failure to stop on demand
- control/ signal failure
- core looseness
- arcing/ electrical discharge
- minor in-service problems
- power/signal transmission failure
- oil quality deterioration


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor power factor/tanδ?

Choices:
- slippage
- failure to connect
- moisture ingress/ content
- oil quality deterioration
- noise
- premature closure
- oil leak
- through fault e.g. lightning strike
- sludge build-up
- arcing/ electrical discharge


failure_mode_sensor_analysis

Question: If the sensor power factor/tanδ in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- connection/ bushing faults
- external damage/ disturbance
- arcing/ electrical discharge
- moisture ingress/ content
- failure to connect
- insulation deterioration
- failure to function on demand
- minor in-service problems
- global buckling
- high output


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor power factor/tanδ?

Choices:
- internal leakage
- moisture ingress/ content
- supply faults, e.g. excessive harmonics and over fluxing
- external leakage - process medium
- internal leakage utility medium
- spurious high alarm level
- loss of buoyancy
- connection/ bushing faults
- insulation deterioration
- through fault e.g. lightning strike


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor resistance in power transformer, which failure event is not relevant?

Choices:
- failure to function as intended
- failure to connect
- on-load tap-changer condition/ fault
- premature closure
- oil quality deterioration
- loss of buoyancy
- control-line-to-well communication
- insulation deterioration
- de-energized tap-changer condition/ fault
- connection/ bushing faults


failure_mode_sensor_analysis

Question: If the sensor resistance in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- arcing/ electrical discharge
- external leakage - process medium
- internal leakage process medium
- moisture ingress/ content
- low output
- de-energized tap-changer condition/ fault
- faulty output voltage
- insulation deterioration
- connection/ bushing faults
- parameter deviation


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor resistance shows an abnormal reading?

Choices:
- internal leakage
- moisture ingress/ content
- failure to close on demand
- spurious operation
- connection/ bushing faults
- insufficient heat transfer
- insulation deterioration
- de-energized tap-changer condition/ fault
- external leakage utility medium
- overheating/ auxiliary cooling system fault


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor resistance?

Choices:
- insufficient heat transfer
- low oil level
- de-energized tap-changer condition/ fault
- faulty output voltage
- stuck
- moisture ingress/ content
- on-load tap-changer condition/ fault
- spurious low alarm level
- insulation deterioration
- failure to function on demand


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor resistance?

Choices:
- abnormal instrument reading
- on-load tap-changer condition/ fault
- failure to stop on demand
- insufficient power
- oil circulation system problem
- insulation deterioration
- spurious operation
- connection/ bushing faults
- moisture ingress/ content
- failure to set/retrieve


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor resistance in power transformer, which failure event is not relevant?

Choices:
- failure to regulate
- connection/ bushing faults
- insulation deterioration
- on-load tap-changer condition/ fault
- winding distortion
- failure to disconnect
- delayed operation
- faulty output voltage
- moisture ingress/ content
- external leakage process medium


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor resistance has an abnormal reading?

Choices:
- insulation deterioration
- spurious stop
- failure to connect
- winding looseness
- connection/ bushing faults
- on-load tap-changer condition/ fault
- loss of functions on both pods
- failure to regulate
- de-energized tap-changer condition/ fault
- internal leakage - utility medium


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor resistance shows an abnormal reading?

Choices:
- control/ signal failure
- spurious stop
- low oil supply pressure
- insulation deterioration
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- insufficient power
- core looseness
- moisture ingress/ content
- internal leakage - process medium


failure_mode_sensor_analysis

Question: When the sensor resistance in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- failure while running
- insulation deterioration
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- parameter deviation
- failure to set/retrieve
- faulty output frequency
- internal leakage process medium
- connection/ bushing faults
- oil leak


failure_mode_sensor_analysis

Question: If the sensor resistance in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- connection/ bushing faults
- parameter deviation
- de-energized tap-changer condition/ fault
- external damage/ disturbance
- noise
- plugged/ choked
- insufficient power
- insulation deterioration
- external leakage process medium
- moisture ingress/ content


failure_mode_sensor_analysis

Question: What is the irrelevant failure event for power transformer if the sensor resistance exhibits an abnormal reading?

Choices:
- spurious low alarm level
- failure to function as intended
- through fault e.g. lightning strike
- on-load tap-changer condition/ fault
- de-energized tap-changer condition/ fault
- external leakage - utility medium
- external leakage process medium
- connection/ bushing faults
- moisture ingress/ content
- structural deficiency


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor resistance shows an abnormal reading?

Choices:
- internal leakage - utility medium
- failure to regulate
- supply faults, e.g. excessive harmonics and over fluxing
- de-energized tap-changer condition/ fault
- control-line-to-well communication
- connection/ bushing faults
- failure to stop on demand
- leakage in closed position
- moisture ingress/ content
- on-load tap-changer condition/ fault


failure_mode_sensor_analysis

Question: When the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- load drop
- oil quality deterioration
- winding distortion
- failure to set/retrieve
- internal leakage - process medium
- premature closure
- insulation deterioration
- vibration
- on-load tap-changer condition/ fault
- moisture ingress/ content


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm)?

Choices:
- oil quality deterioration
- moisture ingress/ content
- structural deficiency
- external leakage - utility medium
- de-energized tap-changer condition/ fault
- high output
- winding distortion
- failure to set/retrieve
- external leakage utility medium
- insulation deterioration


failure_mode_sensor_analysis

Question: When the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- insulation deterioration
- overheating
- arcing/ electrical discharge
- loss of buoyancy
- plugged/ choked
- oil quality deterioration
- moisture ingress/ content
- winding distortion
- abnormal instrument reading
- external leakage process medium


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) shows an abnormal reading?

Choices:
- insulation deterioration
- very low output
- connection/ bushing faults
- oil quality deterioration
- global buckling
- faulty output voltage
- winding distortion
- moisture ingress/ content
- vibration
- failure to set/retrieve


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) shows an abnormal reading?

Choices:
- power/signal transmission failure
- global buckling
- insulation deterioration
- failure to regulate
- moisture ingress/ content
- winding distortion
- slippage
- oil quality deterioration
- overheating/ auxiliary cooling system fault
- control/ signal failure


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) registers an abnormal reading?

Choices:
- moisture ingress/ content
- low oil level
- insulation deterioration
- external leakage utility medium
- winding distortion
- external leakage - utility medium
- external leakage - process medium
- low oil supply pressure
- external leakage - fuel
- oil quality deterioration


failure_mode_sensor_analysis

Question: What is the irrelevant failure event for power transformer if the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) exhibits an abnormal reading?

Choices:
- failure to stop on demand
- winding distortion
- parameter deviation
- low oil supply pressure
- spurious high alarm level
- noise
- oil circulation system problem
- oil quality deterioration
- insulation deterioration
- moisture ingress/ content


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) has an abnormal reading?

Choices:
- abnormal instrument reading
- parameter deviation
- oil quality deterioration
- failure to disconnect
- insulation deterioration
- high output
- winding looseness
- failure to function as intended
- winding distortion
- moisture ingress/ content


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm)?

Choices:
- moisture ingress/ content
- winding distortion
- core looseness
- oil quality deterioration
- structural deficiency
- mooring failure
- failure to start on demand
- insulation deterioration
- failure to close on demand
- loss of functions on both pods


failure_mode_sensor_analysis

Question: When the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- winding distortion
- oil leak
- failure to rotate
- internal leakage - process medium
- insulation deterioration
- oil quality deterioration
- moisture ingress/ content
- erratic output
- parameter deviation
- external leakage process medium


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm)?

Choices:
- insulation deterioration
- global buckling
- moisture ingress/ content
- leakage in closed position
- vibration
- internal leakage
- external leakage - process medium
- winding distortion
- external damage/ disturbance
- oil quality deterioration


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) shows an abnormal reading?

Choices:
- winding distortion
- failure to function as intended
- leakage in closed position
- insulation deterioration
- heating failure
- through fault e.g. lightning strike
- sludge build-up
- breakdown
- moisture ingress/ content
- oil quality deterioration


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor dielecric frequency response (dfr)/ polarization and de-polarization current (pdc)/ recovery voltage method (rvm) has an abnormal reading?

Choices:
- moisture ingress/ content
- failure to disconnect
- failure in lightning protection system
- oil quality deterioration
- supply faults, e.g. excessive harmonics and over fluxing
- leakage in closed position
- loss of buoyancy
- control/ signal failure
- insulation deterioration
- winding distortion


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor frequency response analysis (fra) in power transformer, which failure event is not relevant?

Choices:
- noise
- insulation deterioration
- faulty output voltage
- internal leakage
- very low output
- moisture ingress/ content
- through fault e.g. lightning strike
- plugged/ choked
- winding distortion
- on-load tap-changer condition/ fault


failure_mode_sensor_analysis

Question: When the sensor frequency response analysis (fra) in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- external leakage process medium
- on-load tap-changer condition/ fault
- insulation deterioration
- insufficient power
- de-energized tap-changer condition/ fault
- oil quality deterioration
- low output
- loss of functions on both pods
- through fault e.g. lightning strike
- internal leakage


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor frequency response analysis (fra) shows an abnormal reading?

Choices:
- external leakage - fuel
- insulation deterioration
- failure to start on demand
- through fault e.g. lightning strike
- de-energized tap-changer condition/ fault
- arcing/ electrical discharge
- spurious high alarm level
- faulty output voltage
- control/ signal failure
- winding distortion


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor frequency response analysis (fra) shows an abnormal reading?

Choices:
- de-energized tap-changer condition/ fault
- slippage
- premature closure
- spurious low alarm level
- winding distortion
- insulation deterioration
- mooring failure
- on-load tap-changer condition/ fault
- connection/ bushing faults
- failure to regulate


failure_mode_sensor_analysis

Question: What is the irrelevant failure event for power transformer if the sensor frequency response analysis (fra) exhibits an abnormal reading?

Choices:
- internal leakage - process medium
- on-load tap-changer condition/ fault
- winding distortion
- overheating/ auxiliary cooling system fault
- failure to cut
- de-energized tap-changer condition/ fault
- faulty output voltage
- through fault e.g. lightning strike
- failure to stop on demand
- failure to function on demand


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor frequency response analysis (fra) in power transformer, which failure event is not relevant?

Choices:
- spurious stop
- through fault e.g. lightning strike
- mooring failure
- faulty output voltage
- insulation deterioration
- low oil level
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- noise
- leakage in closed position


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor frequency response analysis (fra)?

Choices:
- failure while running
- low output
- very low output
- spurious stop
- through fault e.g. lightning strike
- on-load tap-changer condition/ fault
- oil circulation system problem
- de-energized tap-changer condition/ fault
- faulty output frequency
- winding distortion


failure_mode_sensor_analysis

Question: If the sensor frequency response analysis (fra) in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- leakage in closed position
- slippage
- through fault e.g. lightning strike
- winding looseness
- winding distortion
- on-load tap-changer condition/ fault
- high output
- spurious high alarm level
- internal leakage utility medium
- de-energized tap-changer condition/ fault


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor frequency response analysis (fra) shows an abnormal reading?

Choices:
- control / signal failure
- insulation deterioration
- well-to-control-line communication
- winding distortion
- de-energized tap-changer condition/ fault
- core looseness
- heating failure
- through fault e.g. lightning strike
- leakage in closed position
- failure to start on demand


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor frequency response analysis (fra) shows an abnormal reading?

Choices:
- no output
- vibration
- through fault e.g. lightning strike
- low oil supply pressure
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- winding distortion
- oil leak
- external leakage — utility medium
- failure to cut


failure_mode_sensor_analysis

Question: When the sensor frequency response analysis (fra) in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- winding distortion
- on-load tap-changer condition/ fault
- external damage/ disturbance
- failure to open on demand
- well-to-control-line communication
- insufficient power
- insulation deterioration
- spurious high alarm level
- external leakage - utility medium
- de-energized tap-changer condition/ fault


failure_mode_sensor_analysis

Question: What is the irrelevant failure event for power transformer if the sensor frequency response analysis (fra) exhibits an abnormal reading?

Choices:
- insulation deterioration
- spurious low alarm level
- low oil supply pressure
- spurious operation
- abnormal instrument reading
- de-energized tap-changer condition/ fault
- through fault e.g. lightning strike
- supply faults, e.g. excessive harmonics and over fluxing
- minor in-service problems
- winding distortion


failure_mode_sensor_analysis

Question: When the sensor excitation current in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- very low output
- heating failure
- insulation deterioration
- failure to disconnect
- structural deficiency
- faulty output voltage
- failure to open on demand
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- moisture ingress/ content


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor excitation current shows an abnormal reading?

Choices:
- de-energized tap-changer condition/ fault
- leakage in closed position
- faulty output frequency
- on-load tap-changer condition/ fault
- insulation deterioration
- well-to-control-line communication
- oil quality deterioration
- structural deficiency
- failure to stop on demand
- loss of buoyancy


failure_mode_sensor_analysis

Question: If the sensor excitation current in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- de-energized tap-changer condition/ fault
- very low output
- insulation deterioration
- arcing/ electrical discharge
- on-load tap-changer condition/ fault
- structural deficiency
- delayed operation
- failure to open on demand
- internal leakage utility medium
- overheating


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor excitation current?

Choices:
- external leakage - fuel
- spurious low alarm level
- failure to regulate
- de-energized tap-changer condition/ fault
- insulation deterioration
- on-load tap-changer condition/ fault
- internal leakage process medium
- connection/ bushing faults
- spurious high alarm level
- failure to start on demand


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor excitation current?

Choices:
- external leakage - utility medium
- on-load tap-changer condition/ fault
- load drop
- no output
- very low output
- insulation deterioration
- overheating/ auxiliary cooling system fault
- de-energized tap-changer condition/ fault
- internal leakage utility medium
- spurious stop


failure_mode_sensor_analysis

Question: If the sensor excitation current in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- premature closure
- internal leakage
- low oil level
- on-load tap-changer condition/ fault
- insulation deterioration
- external leakage utility medium
- de-energized tap-changer condition/ fault
- failure to open on demand
- overheating
- erratic output


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor excitation current has an abnormal reading?

Choices:
- failure to function as intended
- heating failure
- insulation deterioration
- external leakage - fuel
- oil circulation system problem
- faulty output frequency
- failure to set/retrieve
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- failure to close on demand


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor excitation current shows an abnormal reading?

Choices:
- insulation deterioration
- de-energized tap-changer condition/ fault
- low oil supply pressure
- failure to disconnect
- winding distortion
- abnormal instrument reading
- breakdown
- vibration
- on-load tap-changer condition/ fault
- mooring failure


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor excitation current has an abnormal reading?

Choices:
- failure to stop on demand
- spurious high alarm level
- heating failure
- winding looseness
- insulation deterioration
- delayed operation
- leakage in closed position
- de-energized tap-changer condition/ fault
- on-load tap-changer condition/ fault
- failure to disconnect


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor excitation current has an abnormal reading?

Choices:
- core looseness
- on-load tap-changer condition/ fault
- very low output
- noise
- stuck
- control/ signal failure
- insulation deterioration
- spurious high alarm level
- global buckling
- de-energized tap-changer condition/ fault


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor excitation current has an abnormal reading?

Choices:
- de-energized tap-changer condition/ fault
- failure to close on demand
- insulation deterioration
- failure while running
- failure to open on demand
- abnormal instrument reading
- failure to function as intended
- on-load tap-changer condition/ fault
- oil leak
- spurious low alarm level


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor excitation current shows an abnormal reading?

Choices:
- failure in lightning protection system
- on-load tap-changer condition/ fault
- faulty output voltage
- de-energized tap-changer condition/ fault
- internal leakage - process medium
- insulation deterioration
- external leakage — utility medium
- sludge build-up
- failure to cut
- external damage/ disturbance


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor excitation current in power transformer, which failure event is not relevant?

Choices:
- spurious stop
- external leakage - process medium
- stuck
- low output
- insulation deterioration
- delayed operation
- through fault e.g. lightning strike
- de-energized tap-changer condition/ fault
- well-to-control-line communication
- on-load tap-changer condition/ fault


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor excitation current shows an abnormal reading?

Choices:
- failure while running
- failure to disconnect
- supply faults, e.g. excessive harmonics and over fluxing
- vibration
- on-load tap-changer condition/ fault
- insulation deterioration
- spurious low alarm level
- de-energized tap-changer condition/ fault
- control-line-to-well communication
- delayed operation


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor leak reactance flux registers an abnormal reading?

Choices:
- failure to lock/unlock
- internal leakage - utility medium
- winding distortion
- insulation deterioration
- loss of functions on both pods
- abnormal instrument reading
- internal leakage process medium
- control / signal failure
- high output
- parameter deviation


failure_mode_sensor_analysis

Question: If the sensor leak reactance flux in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- abnormal instrument reading
- external leakage - fuel
- internal leakage
- breakdown
- control/ signal failure
- winding distortion
- noise
- internal leakage - process medium
- moisture ingress/ content
- loss of buoyancy


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor leak reactance flux?

Choices:
- insufficient power
- internal leakage - utility medium
- load drop
- winding distortion
- failure to function on demand
- faulty output frequency
- external leakage - process medium
- on-load tap-changer condition/ fault
- loss of buoyancy
- external leakage — utility medium


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor leak reactance flux shows an abnormal reading?

Choices:
- external leakage process medium
- failure to open on demand
- failure to close on demand
- external leakage - fuel
- failure while running
- erratic output
- de-energized tap-changer condition/ fault
- failure to function as intended
- failure to disconnect
- winding distortion


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor leak reactance flux?

Choices:
- control / signal failure
- failure to stop on demand
- high output
- oil quality deterioration
- minor in-service problems
- winding distortion
- failure to rotate
- power/signal transmission failure
- external leakage utility medium
- abnormal instrument reading


failure_mode_sensor_analysis

Question: When an abnormal reading is detected by the sensor leak reactance flux in power transformer, which failure event is not relevant?

Choices:
- sludge build-up
- internal leakage - utility medium
- spurious high alarm level
- winding distortion
- parameter deviation
- control / signal failure
- internal leakage utility medium
- internal leakage - process medium
- arcing/ electrical discharge
- structural deficiency


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor leak reactance flux?

Choices:
- winding distortion
- mooring failure
- connection/ bushing faults
- failure to connect
- power/signal transmission failure
- internal leakage - utility medium
- erratic output
- very low output
- failure while running
- spurious stop


failure_mode_sensor_analysis

Question: When the sensor leak reactance flux in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- overheating/ auxiliary cooling system fault
- stuck
- failure to disconnect
- internal leakage utility medium
- winding distortion
- noise
- insufficient heat transfer
- premature closure
- failure to function on demand
- control-line-to-well communication


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor leak reactance flux shows an abnormal reading?

Choices:
- failure in lightning protection system
- low oil level
- high output
- spurious high alarm level
- failure to start on demand
- parameter deviation
- structural deficiency
- failure to stop on demand
- winding distortion
- failure to set/retrieve


failure_mode_sensor_analysis

Question: Which failure event is irrelevant for power transformer if there is an abnormal reading from the sensor leak reactance flux?

Choices:
- oil circulation system problem
- control/ signal failure
- global buckling
- spurious operation
- low output
- very low output
- external leakage — utility medium
- structural deficiency
- winding distortion
- abnormal instrument reading


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor leak reactance flux has an abnormal reading?

Choices:
- load drop
- very low output
- spurious stop
- external leakage - utility medium
- winding looseness
- internal leakage
- loss of functions on both pods
- winding distortion
- insufficient power
- low output


failure_mode_sensor_analysis

Question: If the sensor leak reactance flux in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- failure while running
- winding distortion
- spurious low alarm level
- core looseness
- minor in-service problems
- failure to close on demand
- parameter deviation
- external leakage - utility medium
- external leakage utility medium
- control-line-to-well communication


failure_mode_sensor_analysis

Question: When the sensor leak reactance flux in power transformer displays an abnormal reading, which failure event is not applicable?

Choices:
- winding distortion
- failure to lock/unlock
- slippage
- internal leakage utility medium
- low output
- abnormal instrument reading
- oil leak
- loss of buoyancy
- well-to-control-line communication
- insufficient power


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor leak reactance flux shows an abnormal reading?

Choices:
- winding distortion
- external damage/ disturbance
- failure to open on demand
- faulty output voltage
- internal leakage - utility medium
- internal leakage utility medium
- premature closure
- external leakage - fuel
- external leakage — utility medium
- vibration


failure_mode_sensor_analysis

Question: Which failure event should be excluded for power transformer when an abnormal reading is detected by the sensor leak reactance flux?

Choices:
- premature closure
- through fault e.g. lightning strike
- failure while running
- winding distortion
- plugged/ choked
- spurious high alarm level
- external leakage - utility medium
- load drop
- failure to open on demand
- internal leakage - utility medium


failure_mode_sensor_analysis

Question: If the sensor leak reactance flux in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- spurious operation
- winding distortion
- failure to start on demand
- loss of functions on both pods
- insufficient heat transfer
- failure to stop on demand
- supply faults, e.g. excessive harmonics and over fluxing
- external leakage utility medium
- global buckling
- no output


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor bushing capacitance registers an abnormal reading?

Choices:
- insufficient power
- insulation deterioration
- spurious stop
- connection/ bushing faults
- structural deficiency
- spurious operation
- internal leakage process medium
- internal leakage
- failure to function as intended
- loss of functions on both pods


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor bushing capacitance has an abnormal reading?

Choices:
- failure in lightning protection system
- loss of buoyancy
- spurious operation
- internal leakage process medium
- faulty output frequency
- failure to disconnect
- mooring failure
- delayed operation
- connection/ bushing faults
- moisture ingress/ content


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor bushing capacitance has an abnormal reading?

Choices:
- overheating
- connection/ bushing faults
- faulty output frequency
- internal leakage - process medium
- control-line-to-well communication
- failure to start on demand
- on-load tap-changer condition/ fault
- low oil supply pressure
- spurious stop
- failure to rotate


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor bushing capacitance registers an abnormal reading?

Choices:
- connection/ bushing faults
- failure to connect
- structural deficiency
- overheating
- faulty output frequency
- plugged/ choked
- spurious stop
- de-energized tap-changer condition/ fault
- failure to regulate
- load drop


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor bushing capacitance has an abnormal reading?

Choices:
- connection/ bushing faults
- failure to stop on demand
- failure while running
- oil quality deterioration
- failure to set/retrieve
- control/ signal failure
- delayed operation
- spurious high alarm level
- failure to disconnect
- structural deficiency


failure_mode_sensor_analysis

Question: If the sensor bushing capacitance in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- leakage in closed position
- internal leakage utility medium
- external leakage process medium
- control-line-to-well communication
- failure to open on demand
- high output
- premature closure
- arcing/ electrical discharge
- breakdown
- connection/ bushing faults


failure_mode_sensor_analysis

Question: What is the irrelevant failure event for power transformer if the sensor bushing capacitance exhibits an abnormal reading?

Choices:
- loss of buoyancy
- spurious operation
- premature closure
- connection/ bushing faults
- sludge build-up
- global buckling
- faulty output frequency
- overheating/ auxiliary cooling system fault
- failure to connect
- failure to function on demand


failure_mode_sensor_analysis

Question: For power transformer, which failure event is not pertinent if the sensor bushing capacitance registers an abnormal reading?

Choices:
- loss of functions on both pods
- breakdown
- overheating
- connection/ bushing faults
- low oil level
- delayed operation
- failure to connect
- erratic output
- power/signal transmission failure
- faulty output frequency


failure_mode_sensor_analysis

Question: For power transformer, what is the non-relevant failure event when the sensor bushing capacitance has an abnormal reading?

Choices:
- spurious stop
- leakage in closed position
- mooring failure
- premature closure
- failure to open on demand
- noise
- heating failure
- connection/ bushing faults
- oil circulation system problem
- failure to regulate


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor bushing capacitance shows an abnormal reading?

Choices:
- failure to function as intended
- external leakage - utility medium
- external leakage — utility medium
- failure to set/retrieve
- winding distortion
- failure to rotate
- vibration
- connection/ bushing faults
- failure to lock/unlock
- high output


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor bushing capacitance shows an abnormal reading?

Choices:
- spurious stop
- internal leakage process medium
- slippage
- global buckling
- winding looseness
- connection/ bushing faults
- failure to disconnect
- internal leakage
- failure in lightning protection system
- faulty output voltage


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor bushing capacitance shows an abnormal reading?

Choices:
- premature closure
- spurious low alarm level
- power/signal transmission failure
- external leakage utility medium
- core looseness
- sludge build-up
- failure to close on demand
- connection/ bushing faults
- failure to lock/unlock
- structural deficiency


failure_mode_sensor_analysis

Question: If the sensor bushing capacitance in power transformer shows an abnormal reading, which failure event is insignificant?

Choices:
- parameter deviation
- failure to start on demand
- failure to connect
- faulty output voltage
- erratic output
- oil leak
- faulty output frequency
- connection/ bushing faults
- spurious high alarm level
- internal leakage


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor bushing capacitance shows an abnormal reading?

Choices:
- connection/ bushing faults
- internal leakage process medium
- external leakage utility medium
- failure to start on demand
- power/signal transmission failure
- failure to close on demand
- abnormal instrument reading
- very low output
- control/ signal failure
- external damage/ disturbance


failure_mode_sensor_analysis

Question: In power transformer, which failure event is unimportant if the sensor bushing capacitance shows an abnormal reading?

Choices:
- through fault e.g. lightning strike
- mooring failure
- load drop
- plugged/ choked
- failure to cut
- spurious operation
- premature closure
- connection/ bushing faults
- insufficient power
- failure to disconnect


failure_mode_sensor_analysis

Question: In the context of power transformer, which failure event is not relevant when the sensor bushing capacitance shows an abnormal reading?

Choices:
- control / signal failure
- internal leakage utility medium
- supply faults, e.g. excessive harmonics and over fluxing
- sludge build-up
- failure in lightning protection system
- connection/ bushing faults
- premature closure
- internal leakage - utility medium
- structural deficiency
- failure to regulate