862 



Voltaic Electricity. Section 1: Galvanic Sources of Current. 



NIL (II O.'.l 



* * SffiHI > 



ii 



* 



61 054. 



61 056. 



Rectifiers for Charging Accumulators with Alternating or 



Three-phase Current. 



61.054. Single Phase Alternating Current Rectifier, Koch system, for charging from 1 12 cells 

 with 5 amperes maximum inclusive of charging resistance; without measuring instru- 

 ments, as Fig. 61,054, but for fixing to the wall, also for connecting to one phase of a 

 3-phase system 



61.055. - - idem, for charging 25 40 cells with 15 amperes maximum, with voltmeter 

 and ammeter 



The following is the mode of action of this Rectifier: The armature of a polarised interrupter 

 oscillates synchronously in the exciter circuit and in phase with the alternating current, by the appropriate 

 employment of self-induction and capacity. Influenced by the voltage of the battery to be charged, 

 this armature puts a contact into the main circuit in such manner that only current impulses in the 

 same direction are admitted and the closing and opening take place exactly at the times of voltage 

 equalisation between battery and alternating current. The contact thus works sparklessly and current 

 losses are excluded. 



The apparatus can be used for all practical A. C. voltages to 240. When ordering, precise in- 

 formation should be given as to number of cells, charging current, voltage and periodicity of the 

 Alternating Current. 



61.056. Mercury Vapour Rectifier, Figure, high efficiency, for charging Accumulators 

 with single phase A. C., also for connecting up to one phase of a 3-phase system, for 

 A. C. pressures from 105 120 or 200 240 volts and 50 cycles, for 6 14 cells; charging 

 current 3 5 amperes, including a regulating resistance 



61,056 a. - - i d e m, for 1526 cells, 35 amps 



61.057. - - idem, for 6 14 cells, charging current 4 10 amps., for connecting up to 

 105 120 volts A. C., 50 cycles 



61.058. - - idem, for connecting up to 200 240 volts A. C., 50 cycles, 4 10 amps. . . 



61.059. -- idem, for 15 26 cells, charging current 4 10 amps., for connecting up to 

 105120 volts A. C., 50 cycles 



s. d. 



12. 10.0 



. 10.0 



61.060. - - idem, for connecting up to 200 240 volts A. C., 50 cycles, 4 10 amps. . . 



61.061. --idem, for 27 44 cells, charging current 4 10 amps., for connect ing up to 

 105 120 volts A. C., 50 cycles 



13. 0.0 



14. o. o 



17.10.0 

 17. IT), it 



III. 0.0 

 18. 10. d 



61,062. -- idem, for connecting up to 200 240 volts A. (\, 50 cycles. 1 10 ;nnps. . . 

 Mercury Vapour Rectifiers for heavier Currents quoted for on application. 



The action of the mercury vapour reel il'i'T is based on the valvular action which lakes place al. 

 the electrodes in a lilass vessel filled with mercury vapour. Its advantages consist in the hi<:!i efl'i 

 ciency. the lack of actuated pails anil in the fact thai it is always ready for use. The number of 



cells, periodicity and voltage of the A. C. should be given when ordering. 



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