0
Is it possible for a power transformer to have an arc fault between the primary terminal and its metal enclosure?
Rodmallanao
Sure. No transformer is built to last forever. Aging and operations will weaken the insulation with time.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is difference between interposing voltage transformer and potential transformer?
potential transformer is to maser and protection purpose the ivt is used for synchronicing purpose
What is the difference between power transformer and instrument transformer?
A power transformer is used to provide power (to your home, for example), an instrument transformer is used to measure voltage or current (for metering, for example).
What is the difference between control transformer and Potential transformer?
Control transformer used only for control supply 110,220, 24,12V AC. But Potential transformer used voltage measurement purpose.
The leakage flux of transformer depends on?
Actually it depends on the air gap between the core and the windings of the transformer. This is the reason why stepped core is used in medium and large transformers as it decreases the air gap between the windings and the core of the transformer.
What is the difference between an isolation transformer and distribution transformer?
in isolation transformer earthing is not provide on secondary side but in ordinary transformer neutral of secondary side is earthedAnswerAn isolation transformer is a 1:1 ratio transformer; its function is to electrically isolate the secondary side from the primary side without changing the voltage. An example of an isolation transformer is the one used in a shaver socket.A distribution transformer is a step-down transformer, used within the electricity network's distribution system. An example of distribution transformer is a pole-mounted transformer, supplying low voltage to residences.(Of course, all mutual transformers provide electrical isolation between primary and secondary.)
What is the difference between an annex and an enclosure?
an annex is where people live and enclosure is where things are kept e.g monkeys are kept in a monkey enclosure.
What is the difference between a balanced transformer and an unbalanced transformer?
there is nothing like a balanced and unbalanced transformer.
When were the majority of the enclosure acts passed?
Tha majority of Enclosure Acts were passed between 1750 and 1860.
Did the enclosure acts apply in Scotland?
Yes the enclosure acts applied to Scotland and the entire United Kingdom. The enclosure acts occurred between 1604 and 1914.
What is the difference between isolation transformer and ferromagnetic transformer?
An isolation transformer is usually a ferromagnetic transformer. The question needs to be framed more usefully.
Define blocking in a switched network?
blocking refers to when an input terminal cannot be connected to an output terminal because there is no path available between them i.e. all possible intermediate switches are occupied
How do you determine the polarity of transformer windings?
They are marked on the transformer. H1 and H2 primary, X1 and X2 secondary. Dual voltage primary H1, H3 H2, H4, Dual voltage secondary X1, X3, X2, X4.Additional Answer for Unmarked TransformerFor a completely unmarked transformer, a continuity test will confirm which terminals belong to which windings, and a resistance test will identify the high-voltage (higher resistance) and low-voltage (lower resistance) windings. In North America, HV winding terminals are identified by the letter 'H' and LV windings by the letter 'X'. For a two-winding, four terminal, transformer, to test for polarity, the transformer should be orientated so that the HV windings are on the far side of the transformer, and the LV windings are on the nearest side. By convention, the left-hand HV terminal is then marked H1, and the right-hand terminal is marked H2. The LV terminal adjacent to H2 is then connected to terminal H2, so that both the HV and LV windings are in series. A voltmeter is then connected between the LV terminal adjacent to H1, and the H1 terminal itself. A low-voltage supply is then connected across the HV windings (i.e. between H1 and H2). If the voltmeter registers a voltage higher than that applied to the HV windings, then the transformer is of additive polarity, and the LV terminal adjacent to H2 should be marked X1 and the LV terminal adjacent to H1 should be marked X2. If, on the other hand, the voltmeter reading is less than the applied voltage, then the transformer is of subtractive polarity, and the LV terminal adjacent to H2 should be marked X2, and the terminal adjacent to H1 should be marked X1.By convention, when terminal H1 'goes positive' during the AC sine-wave, then terminal X1 should also 'go positive'.A similar process applies to multi-winding multi-terminal transformers. Again, the windings of such transformers must have their terminals identified first -a simple continuity test will reveal these. The rule is that an odd number (e.g. H1, etc.) represents the 'start' of a winding, and an even number (e.g. H2) represents the 'end' of a winding. Again, a simple resistance test will identify the high-voltage (higher resistance) and low-voltage (lower resistance) windings.For UK transformer, HV windings are identified as A-B, etc., and LV windings as a-b, etc.
What difference's between potential transformer and voltage transformer?
Both are same. This is an instrument transformer used for metering & protections.
What is the difference between a 1.5KVA and a 3KVA transformer?
The 3 kVA transformer will weigh double the 1.5 kVA transformer.
Difference between potential transformer and current trasnformer?
The difference between current transformer and potential transformer is that the secondary of a current transformer can not be open circuited while under service whereas that of the potential transformer an be open circuited without any damage to the transformer.
What is the definition of audio-frequency transformer?
An audio frequency transformer is a transformer designed to operate in the range of frequencies audible to the average human. This range is generally accepted to be from 20 Hz to 20,000 Hz. The usual purpose of an audio transformer is to match impedances between circuit sections. For example: between a microphone and the input of an amplifier, (input transformer), or between the output of an amplifier and the loud speaker. (output transformer).
What is the difference between variable transformer and ordinary transformer?
Variable transformer may also refer as auto transformer. We can vary the output voltage of the transformer. But in the ordinary transformers output voltage is already designed.
