TA transformers (anode transformers) are designed to operate in general-purpose radio electronic equipment when powered from an industrial AC network with a voltage of 127 and 220 V and a frequency of 50 Hz. The presence of several secondary windings on the transformer, designed for different currents and voltages, and the possibility of their serial and parallel connection, make it possible to obtain different combinations of currents and voltages at the transformer output. The presence of additional taps in the primary winding makes it possible to accurately take into account the features of the supply network. The main electrical parameters of the transformers are given in the tables. Order a toroidal transformer with similar parameters
Table 1 shows the rated values of the voltages and currents of the secondary windings. Transformers are grouped in groups of the same power. The name of the group indicates the type of core on which the transformers of the group are assembled, the power and current (in amperes) of the primary winding: in the numerator - when powered from a 127 V network, in the denominator - 220 V.
Overall and mounting dimensions, as well as the weight of TA transformers are given in table 3 ... 11. The design of TA transformers is shown in Fig. 1 ... 8. The data given in the tables characterize, in addition, transformers of the types TN, TAN and TPP, the electrical parameters of which are considered in other articles, In tables 3, 5, 9, 10 transformers in the UHL design are considered, in tables 4,6,7,8,11 - in performance B. Tables 5 ... 9, 11 contain data on transformers with reduced copper consumption. Operating conditions of transformers TA, TN, TAN, TPP are given in Table 12. Transformers have four options for electrical circuits: 1. Electrical circuit of TA at 50 Hz, 127/220 V with a full number of secondary windings on armored and rod cores ШЛ, ШЛМ, ПЛ and ПЛМ. On one side bar there are windings 1-5, 11-12, 13-14, on a friend - 6-10. 15-16,17-18. Is shown in Fig. 9. In transformers on armored cores ШЛ and ШЛМ, all windings are located on the middle core of the core, and in TA on the cores PL and PLM - on the side rods. On one side bar there are windings 1-5, 11-12, 13-14, 15-16, on the other - windings 6-10,17-18,19-20, 21-22. 2. The electrical circuit of the TA at 50 Hz, 127/220 V with an incomplete number of secondary windings on the rod cores of the PL and PLM is shown in Fig. 10. 3. Electrical circuit of TA at 50 Hz, 220V on armored cores ШЛ and ШЛМ is shown in Fig. 11. 4. Electrical circuit of TA at 50 Hz, 220 V on rod cores PL and PLM is shown in Fig. 12. On one side bar there are windings 1-2, 11-12, 13-14, 15-16, on the other - windings 6-8,17-18, 19-20, 21-22. 220 V TA transformers have been produced since 1979, they have one primary winding and the same pin numbering as for 127/220 V transformers. Electrical parameters, overall and installation dimensions, as well as the weight of 220 V TA transformers are the same as the corresponding 127/220 V TA transformers. The voltages at the taps of the primary windings of the 127/220 V TA transformers are: - between conclusions 1 and 2, 6 and 7 - 100 V; - between conclusions 2 and 3, 7 and 8 - 20 V; - between conclusions 3 and 4, 8 and 9 - 7V; - between conclusions 4 and 5, 9 and 10 - 7B. When using transformers TA 127/220 V with armored cores ШЛ and ШЛМ for 127 V, it is necessary to connect terminals 1 and 6.4 and 9 (while the primary windings 1-4 and 6-9 are connected in parallel), apply a voltage of 127 V to terminals 1 and 4. When using transformers TA 127/220 V with armored cores ШЛ and ШЛМ for 220 V, it is necessary to connect terminals 2 and 6 and apply voltage 220 V to terminals 1 and 8. When using transformers TA 127/220 V with core cores PL and PLM for 127 V, it is necessary to connect terminals 1 and 9, 4 and 6 (while the magnetic fluxes of the primary windings of both rods are summed up), apply voltage 127 V to terminals 1 and 4. When using transformers TA 127/220 V with core cores PL and PLM for 220 V, it is necessary to connect pins 2 and 8 and supply 220 V supply voltage to pins 1 and 6. In TA 220 V transformers with armored cores ШЛ and ШЛМ, 220 V mains voltage is supplied to terminals 1 and 8. In TA 220 V transformers with rod cores PL and PLM it is necessary to connect pins 2 and 8 and apply 220 V mains voltage to pins 1 and 6. In TA transformers (as well as VT, TAN, TPP), serial and parallel connection of the secondary windings is possible. Sequential connection of various secondary windings allows you to select the required output voltage, parallel - to increase the power by. output windings. When windings with different permissible currents are connected in series, the current through the windings should not exceed the minimum permissible. Parallel connection is allowed only for those windings, the voltages at the terminals of which are the same. The diagram of the series connection of the windings of transformers with armored cores ШЛ and ШЛМ is shown in Fig. 13, with rod cores PL and PLM - in Fig. 14. The scheme of parallel connection of the windings of transformers with armor cores ШЛ and ШЛМ is shown in Fig. 15, with rod cores PL and PLM - in Fig. 16 A source:
1. I. N. Sidorov, V. V. Moiseev,
A. A. Khristinin. Small-sized transformers and chokes. - M .: Radio and communication, 1985.
2. N. N. Akimov, E. P. Vashchukov,
B. A. Prokhorenko, Y. P. Khodorenok. Resistors, capacitors, transformers, chokes, REA switching devices; Directory. - Minsk: Belarus, 1994
Order a toroidal transformer with similar parameters