lesson 2: Utility Power
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| ? is/are fed into transformers to reduce distribution voltage to the utilization voltage specified by the health care facility. | show 🗑
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| Prior to electrical power deregulation, what two service feeds would health care facilities often have? | show 🗑
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| show | utilizing on-site power generation
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| show | Manual transfer switches
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| true/false In a manual transfer utility design, in the event of a failure, a qualified person opens the primary feeder switch and closes the secondary feeder switch to provide normal utility power to the facility. | show 🗑
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| show | line side
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| show | the entire load
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| In a two-service system that employs two distribution feeders and two utility transformers, how many of the transformers’ secondary sides are provided with a disconnect? | show 🗑
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| Double-ended switchgear electrically divides the load into two distinct sections through the use of ? . | show 🗑
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| During normal operation of double-ended switchgear, the mains from both utility transformers are ? , and the tie breaker between the two ends of the switchgear is ? . | show 🗑
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| During a utility power outage of the primary service, the main switch on the primary should be opened and the tie breaker in the double-ended switchgear should be closed. The secondary service will now carry how much of the health care facility load? | show 🗑
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| A qualified person should open the main switch of the utility transformer experiencing the outage ? closing the tie breaker to avoid backfeeding the grid with the entire energy of the second energized service. | show 🗑
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| show | keying
this system uses a keys that are captured by the system when a switch is closed. this system requires a key to open and a a key to close both the main switch and the tie-breaker.
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| show | 2
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| NFPA 99 and NFPA 110 require certain loads in health care facilities, namely elements of the essential electrical system, to be brought online within ? of a power outage. | show 🗑
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| What must be done for current from different utility feeders to occupy the same service bus without issue? | show 🗑
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| true/false Opening one device on a loop distribution system will adequately deenergize the distribution loop. | show 🗑
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| show | Critical systems, Defined equipment and Life safety systems
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| show | false
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| show | false
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| In the event of a generator overload, NFPA 99 and NFPA 70 allow generating systems to ? . | show 🗑
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| When multiple generators are attached to a common bus, ? is used to ensure each generator is in phase with the others. | show 🗑
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| show | 2
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| show | Heat distribution, Mounting requirements and Starting systems
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| Generator fuel is often stored in large underground tanks. This fuel is typically pumped into smaller tanks called ? that are located near the generators. | show 🗑
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| Day tanks use ? to alert personnel that a fuel pump is malfunctioning and is no longer pumping fuel from the storage tank. | show 🗑
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| Day tanks use ? to activate the main storage fuel pump to fill the day tank. | show 🗑
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| show | high-level limit sensors
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| If the fuel pump or level sensors are malfunctioning, day tanks use ? to signal personnel that the tank is about to overflow. | show 🗑
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| Approximately ? of the energy released by burning fuel is converted into electrical energy. | show 🗑
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| show | false
it will not impact the performance of the generator due to the malfunction of an exhaust gas heat exchanger
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| show | electric pumps
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| show | true
coolant degrades over time, which can cause scale deposits to build up on the radiator core, severely limiting the core's ability to exchange heat with the surrounding air.
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| What is the most likely cause for a generator start up failure? | show 🗑
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| show | block heaters
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| show | nickel cadmium batteries
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| NFPA 99 requires generator accessories such as battery charging equipment to be installed on the ? branch of the essential electrical system. | show 🗑
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| When batteries have reached the end of life as determined by the manufacturer, or when they are not testing to manufacturer’s specifications, they should be ? . | show 🗑
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| In the past, during high demand periods, power companies would offer health care facilities with self-generation capabilities a reduction in rates if the facility would generate power during these high demand periods. This practice is known as ? . | show 🗑
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| show | The cost of fuel, The cost of generator wear and tear, The price of utility power
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| The United States Environmental Protection Agency (EPA) has expressed concern about peak shaving because of ? . | show 🗑
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| Because self-generation for non-essential loads is not required to be online within 10 seconds after an outage, ? have become an attractive alternative to reciprocating engines. | show 🗑
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| Turbine engines have much less vibration than reciprocating engines because ? . | show 🗑
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| show | a lower
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| Gas turbine generators can be a good choice for on-site power generation because ? . | show 🗑
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Created by:
Yusosweet1