Power transformers of the TPP type. Reference data

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Power transformers of the TPP type. Reference data

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Encyclopedia of radio electronics and electrical engineering / Reference materials

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These transformers are used to power semiconductor equipment from an AC network with a frequency of 50 Hz and a voltage of 127 and 220 V. The main parameters of transformers of the TPP series are given in Table 1 and Table 2, of the TPP2 series - in Table 3.

Tables 1, 2 and 3 give the nominal voltages and currents of the secondary windings. In the first two tables, the transformers are grouped into groups of the same power. The group header gives the type of core on which the group's transformers are assembled, the power (N) and current (I, in amperes) of the primary winding: in the numerator - when powered by a 127 V network, in the denominator - 220 V. In some cases, transformers of the same power placed in different groups, because they are made using different cores. All transformers of the TPP2 type (Table 3) are made using a PLM 27x40-58 core, the primary winding current when powered from a 127 V network is 2,03 A, when powered from a 220 V network - 1,15 A.

Table 3 shows the parameters of only the first half of the secondary windings of TPP2 transformers. The second half has similar parameters. For example, the current and voltage of the winding 23-24 are similar to the corresponding parameters of the winding 11-12 of the TPP2-1 transformer, 25-26 - 13-14, etc., and for the TPP2-5 transformer, the winding 15-16 is similar to the winding 11-12, and 17-18 - 13-14.

The electrical circuits of transformers TPPi TPP2 are shown in fig. 1...9. Variant fig. 1 - diagram of transformers TPP48, TPP67 and TPP88, allowing connection to a network with a voltage of both 127 V and 220 V. In the first case, it is necessary to connect terminals 1 and 6, 4 and 9, while the primary windings 1-4 and 6-9 connected in parallel, apply a voltage of 127 V to pins 1 and 4. In the second case, connect pins 2 and 6, and apply 220 V to pins 1 and 8.

Variant fig. 2 - diagram of armored transformers TPP201 .. TPP289 (made on the cores of ShL and ShLM), allowing connection to a network with a voltage of both 127 V and 220 V. In the first case, it is necessary to connect terminals 1 and 6, 4 and 9, while primary windings 1-4 and 6-9 are connected in parallel, apply a voltage of 127 V to terminals 1 and 4. In the second case, connect terminals 3 and 7, and apply 220 V to terminals 2 and 9.

Variant fig. 3 is a diagram of armored transformers designed to be connected to a network with a voltage of only 220 V. This voltage is supplied to terminals 2 and 9.

On fig. 4 shows a diagram of transformers of the TPP290 ... TPP323 rod structure (made on PL cores), which can be connected to a network with a voltage of both 127 V and 220 V. In the first case, it is necessary to connect terminals 1 and 9, 4 and 6, while magnetic the flows of the primary windings of both rods are summed up, apply a voltage of 127 V to terminals 1 and 4. In the second case, connect terminals 3 and 9, and apply a voltage of 220 V to terminals 2 and 7.

Variant fig. 5 is a diagram of rod-type transformers designed for connection to a network with a voltage of only 220 V. In this case, it is necessary to connect terminals 3 and 9, and apply 220 V voltage to terminals 2 and 7.

TPP2 transformers have a rod design. The scheme of TPP2-1 is shown in fig. 6, TPP2-2 - in fig. 7, TPP2-3 and TPP2-4 - in fig. 8, CCI2-5 - in fig. 9. The primary windings of these transformers are the same. When TPP2 transformers are connected to a network with a voltage of 127 V, it is necessary to connect terminals 1 and 10, 5 and 6, while the magnetic fluxes of the primary windings of both rods are summed up, apply a voltage of 127 V to terminals 1 and 5. When these transformers are connected to a network with a voltage of 220 In it is necessary to connect pins 4 and 9, and apply 220 V voltage to pins 2 and 7.

The voltages at the taps of the primary windings of transformers TPP201 ... TPP323 for 127/220 V are:

between terminals 1 and 2,6 and 7 - 7V;
between pins 2 and 3, 7 and 8 - 100V;
between terminals 3 and 4,8 and 9 - 20 V;
between terminals 4 and 5, 9 and 10 - 11 V.