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Normally current Transformers are used for two things . For measuring and protection. Whenever the CT is a protection CT it will be connected with the protection relays and there will be setting in the relays based on our requirement.
when the current pass through the relays are more than the setting range then relay will send the tripping signal to the breaker available in the system to isolate the fault section. Finally the CT is not protecting the system. it will transfer the high primary current from the system to relay as small secondary current.
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Does the fuse on the primary side of a transformer protect the secondary side?
Yes, but it's usual to have fuses on both sides of the transformer.
What is mov capacitor?
A capacitor used to protect the transformer if these any problem in the cct.
How transformer get burn?
Current overload from whatever circuit draws current from the transformer? Proper fusing of its supply might protect a transformer from this cause. Or it could have developed a shorted turn fault because the insulation on a winding got old and perished? Or maybe the transformer got damaged if the appliance it is mounted in was dropped?
What can protect a computer from problems caused by a change in power?
A surge suppressor will protect against transient high voltage surges.A ferroresonant transformer will protect against transient low voltage brownouts.A uninterruptable power supply will protect against power failures of several minutes duration.
Can you use ordinary transformer in place of auto transformer?
yes we can place auto transformer in place of original transformer
Is it dangerous to run an appliance with more watts than the transformer?
A transformer has a rating that is usually expressed in KVA. This is approximately a wattage rating. It is not dangerous but it can be the cause of some concern. An appliance has a set current that is draws. This current times the voltage is the appliance's wattage. The same goes for the transformer. It only has a certain capacity to supply a specific current that is governed by its KVA (watts). Driving the transformer beyond its rated capacity tends to heat the transformer beyond its working temperature. If left in this over current draw the transformer's windings insulation will break down and the windings will short circuit. This is usually the end of a working transformer. So short answer, more watts (amps) from appliance equals burned out transformer.
Can you use transformer with your 110 aircon?
A transformer can be used to change the voltage to an appliance. The voltage rating of the transformer should be right for the voltages used, and the current rating of the transformer should not be less than the current drawn by the equipment.
Can 120V appliance work with 220V?
120V appliance will not work on 220V. Use an instrument transformer or voltage regulator to adjust the high voltage to the desired level.
What position in the circuit is a fuse placed to protect a transformer?
In series to every phase winding of transformer.
Can you use an appliance on a 110 volts when it requires 120 volts?
Some appliances, like air conditioners and clothes dryers require about twice as much electricity as most other devices, and require their own 220V supply of electricity. Your appliance will not work with only half the amount of electricity it needs. I recommend calling an electrician and having him install the appropriate plug.
Can you rewire a 240v lamp light fitting or small appliance to 110v and if so how?
Yes, you need a transformer
Will REF protect the outgoing cables when the Ct's are fitted at the transformer?
REF protection, when installed and set correctly, will protect everything within the CT's. If the CTs are on breakers, then yes, the cables from the transformer to the breakers will be in the zone of protection. If the CTs used are in the bushings of the transformer, then no.
You observe a small plaque on an electrical appliance that reads in part 115 volts AC 60 Hz This means that the appliance?
That the appliance does not need a electrical transformer and uses the US standards for electricity off the grid.
What is a Current Reversing Transformer?
This is a transformer built into electrical appliance to make electricity meter to stop reading or made to read in reverse order. This reduces the consumption reading and cheats the system. That is bad.
What happens when an ac transformer attached to ac appliance is plugged into dc power source?
it depends on the transformer size and the period of time involved if continuous it should just blow the breaker and itself.
Does the fuse on the primary side of a transformer protect the secondary side?
Yes, but it's usual to have fuses on both sides of the transformer.
Is there a step up transformer that I can purchase to use a 220V 50Hz 13A kitchen appliance in a regular kitchen in the US?
A transformer will not change the frequency. 50 Hertz in 50 Hertz out. 60 Hertz in 60 Hertz out. Transformers main purpose is to change one voltage value to different voltage value. Depending on what the kitchen appliance is and whether it has a motor involved in its operation, the appliance could be connected to the 240 volt North American distribution supply. If the appliance was identified, an answer of yes or no could be supplied.
