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How can you identify the primary secondary of a transformer on a schematic if it is not indicated?
Wiki User
∙ 16y ago
Without knowing the type of transformer (audio/power, step-up, step-down, etc.) it's difficult to offer any advice.
Wiki User
∙ 16y ago
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How to differentiate 110v or 220 transformers?
The way to identify any transformer is to look at the the transformers nameplate. The primary side will be designated H1 to H4. This is the primary side and the voltage will be stated as to the voltage to connect to. The secondary side will be designated X1 to X4. This is the secondary side and the voltage will be stated as to the voltage it will be transformer to.
How do you identify step up or step down transformer from phasor diagram?
Number of turnsAnswerI assume that you have a phasor diagram of a transformer, and wish to identify the primary phasors and the secondary phasors?For a three-phase transformer, this is fairly straightforward, provided the usual procedure for drawing a phasor diagram has been followed. Whenever you start to draw anysort of phasor diagram, you usually start by selecting a phasor of reference and draw that in the horizontal positive direction. For a three-phase transformer, the phasor of reference is usually the primary phase voltage A (or however else it is identified: R, red, or whatever). The remainder of the primary phase voltages are then drawn, enabling the primary line voltages to be constructed (which, in the case of a primary delta are the same as the primary phase voltages!). So if you can identify the phasor of reference, then you have identified the primary-winding phasor diagram. As the primary and secondary voltages are not usually drawn to scale, relative to each other, you can't assume a turns ratio from the phasor diagram. The labelling might also help, as high-voltage phase and line voltages are identified by upper-case letters, while low-voltage phase and line voltages are identified using lower-case letters -but, remember, these identify high- and low-voltages, not which is primary and which is secondary (primary winding is connected to supply/secondary winding is connected to load).For single-phase transformer, the phasor of reference is the flux set up in the magnetic circuit, and voltages/current phasors are drawn relative to this. In this case, the primary line and induced voltages are usually identified as V1 and E1, and the secondary induced voltage as E2 (sometimes, the Es and Vs are interchanged). Again, the lengths of the primary and secondary voltages are not necessarily to scale relative to each other.
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.
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How can you identify the primary secondary of a transformer used in power supply on a schematic if it is not indicated?
I am in search of this question too. However, i do know that measuring the ohms on both sides should yeild one with a very high resistence and other with a very low resistence...i just need help with identifying the prim and secondarys based on that info
How can you identify which one is step up or step down transformer?
A transformer has two windings, termed the 'primary winding' and the 'secondary winding'. The primary winding is the winding connected to the supply, while the secondary winding is connected to the load. The secondary voltage of a 'step up' transformer is higher than the primary voltage; the secondary voltage of a 'step down' transformer is lower than the primary voltage. The simplest way to determine whether a transformer is a step up or step down, is to measure the primary and secondary voltages. If you are simply looking at a transformer, then the transformer's insulated bushings will give you a clue -the higher voltage bushings are much bigger than the lower voltage bushings. If you have access to the inside of the transformer, then the higher voltage windings are thinner and have a greater number of turns than the lower-voltage winding.
How to differentiate 110v or 220 transformers?
The way to identify any transformer is to look at the the transformers nameplate. The primary side will be designated H1 to H4. This is the primary side and the voltage will be stated as to the voltage to connect to. The secondary side will be designated X1 to X4. This is the secondary side and the voltage will be stated as to the voltage it will be transformer to.
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Wiring schematic
Identify the difference between primary sector and secondary?
Identify the difference between primary sector and secondary sector
Identify the term indicated by this description curled?
Cirro
Identify the term indicated by this description mares' tails?
cirro
Identify the term indicated by this description fluffy or piled?
cumulus
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Nimbo
How can you identify the Primary and secondary winding of a transformer through input and output connected wires without using multimeter?
Usualy the largest current is at the lowest voltage side ; so the largest conductor section determine the lowest voltage side ; if the transformer is a set up one , the primary will be the lowest voltage winding ; in the other hand , it 'll be the highest voltage winding
Identify the term indicated by this description middle?
In between, center. Alto A++
How you can find out transformer primary and secondary turn?
The primarys are marked with the letter H and the secondary terminals are marked with the letter X. The rest depends on how many phases, single transformer, bank transformes, secondary outputs desired, delta or wye or both, etc..... A: most of the time there are not marked with anything. for a power transformer the primary will offer a resistance of 15 ohms the secondary can be more or less depends on applications
