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3 phase 380V 9HP motor and you want to operate it with UPS system in the event of supply interrupted what can you do?
Wiki User
∙ 15y ago
This motor will consume about 11 Kw of power when it is running. However, motors draw a very large current on startup, so an 11 Kw UPS will not be sufficient. You will most likely need a 20 Kw or larger UPS. Check with the UPS manufacturer, not all UPS's are rated for motor starting. In addition, how long do you want to sustain operation in the event of power loss? If it is more than 15 minutes or so, your batteries will become so large as to be impractical, unless your application is a critical industrial process and you have the funds to burn. Consider a UPS with batteries sized for just a few minutes coupled with a 20-25 Kw autostart generator to feed the UPS if your backup time is more than an hour or so.
Wiki User
∙ 15y ago
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How does a thermal overload control a circuit when the phase short to ground?
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Grounding terminals are used to connect the electrical equipment or wiring system to the Earth. It's purpose is to reduce the risk of electrical shock in the event of a fault current. In most homes, the wiring system is permanently grounded to a metal pipe that connects to an underground water-supply system or to a metal rod that has been driven into the ground.
Why DC source is required for a breaker?
A high-voltage circuit breaker's trip coil is normally operated from a d.c. supply -provided by a bank of batteries located in the substation. This ensures that, in the event of a total loss of a.c. power to the substation, the protection system remains effective.
What are electrical fuses?
Safety devices used in electrical circuits.AnswerA fuse is an overcurrent protection device, and will operate in the event of a sustained overload current or a short-circuit current.
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What ABC prime time show was interrupted on October 17 1989 and by what event?
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How does a thermal overload control a circuit when the phase short to ground?
If you are describing a circuit breaker then its electromagnetic trip component will operate in the event of a line*-to-ground (*not 'phase'!) short circuit. The thermal overload component will only operate in the event of a sustained overload.
What do you mean by discrimination of a transformer?
The term, 'discrimination', is applied to fuses. This describes the requirement for any fuse closer to an overcurrent fault to clear that fault within the time necessary for a second fuse, closer to the supply, to operate. This minimises the number of circuits disrupted in the event of a overcurrent fault.
What will happen to supply of coke in the case of an unplanned events?
The answer depends on the event(s).
Who most likely interrupted Ernesto's water party Jos and Gustavo his mother the hotel clerk?
The hotel clerk is the most likely person to have interrupted Ernesto's water party, as they would have had knowledge of the event and access to the room. Jos and Gustavo are less likely to have been involved unless they were also staying at the hotel. Ernesto's mother may have interrupted the party if she was visiting or had knowledge of the hotel reservation.
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Where is Event table for Hotel reservation system?
as like use case diagram is the here also event table is the you can check on youtube type ''event table". . .but iam not getting the the event table for hotel management system
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To supply electricity in the event that the main power supply is unavailable and electricity is needed, or when it is impossible to connect everything that needs electricity to an outlet.
