Test 14 Flashcards
A general start-up procedure begins at the loads and ends at the array.
False
Overall system manuals are more likely to be available if the system was designed by an integrator.
True
Battery terminals should not be pulled laterally or twisted because internal battery components could be damaged.
True
Significantly low specific gravity of individual battery cells indicates cell failure or shorts.
True
A refractive index hydrometer is a bulb-type syringe with a float that experiences a buoyant force equivalent to the weight of the displaced elctrolyte.
False
A maintenance log is a checklist of all required regular maintenance tasks and their maximum intervals.
False
By adding a special temperature sensor to the back surface of a module, cell temperature can be measured.
True
A PV system may include both a DC power-distribution system for DC loads and an AC power-distribution system for AC loads.
True
Remediation is a troubleshooting step that involves gathering all the relevant system documentation together.
False
Some equipment manuals include troubleshooting flow charts to help in determining the possible causes of a problem.
True
____ is the starting and operation of a PV system for the first time.
Commissioning
Line diagrams, operating procedures, and programming instructions posted near key components can be very helpful during ____.
user training, maintenance, and troubleshooting (all of the above)
____ is the separation of the bonded layers of glass and/or plastic encasing the PV cells of a module.
Delamination
The electrolyte in flooded, open-vent batteries must be maintained at proper levels by periodically adding ____.
water
A ____ is an instrument used to measure the specific gravity of a liquid.
hydrometer
A(n) ____ is a test instrument that indicates battery health by drawing a high discharge current from a battery for a short period.
battery load tester
____ is the continuous measurement of electrical, environmental, or battery parameters.
Monitoring
Data ___ is the recording and processing of data from a monitoring system.
acquisition
____ is a systematic method of investigating the cause of system problems and determining the best solution.
Troubleshooting
____ is a troubleshooting step that involves determining which part of the system is not working properly and observing the conditions that may have contributed to the cause.
Observation
Interactive PV systems generally require the least ____.
maintenance
____ grounding connections usually result from the contact of incompatible materials.
Corroded
____ are usually the most maintenance-intensive components in any PV system.
Batteries
____ or voltage can be used to estimate battery state of charge in lead-acid batteries.
Specific gravity
The ____ index is the amount that a substance bends light that passes through it.
refractive
Total battery capacity is equal to the average load current multiplied by the ____ time.
discharge
Measuring electrical parameters is the most important type of ____.
monitoring
A(n) ____ is the depth of examination into the equipment or processes that compose a system.
troubleshooting level
A system is broken down into functional areas called ____.
subsystems
____ is a troubleshooting step that is conducted primarily through inspection and testing.
Investigation
