No 50 513. 



Rheostats. 



125 



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4 



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50 510, 50 512. 1 : 14. 







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X 



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50 509. 1 : 12. 



s. d. 



50.509. Experimental Switchboard (Wall Pattern), with 2 Circuits, for connecting up simul- 

 taneously to a Direct and an Alternating Current Supply, having a voltage of 110 to 

 160 volts, for taking currents of 0.3 30 amps, and pressures of 0.3 110 (or 160) volts, 

 Figure ! 43. 0. 



The switchboard is equipped for Direct and for Alternating Current with the following : 1 Rheostat 

 each of 36 ohms, variable in 30 stages and for a max. load of 5 30 amps. ; each 1 Double Switch Lever 

 with 30 contacts; each 2 fuses; each 1 main switch; each 2 terminals for connecting up to the supply 

 lead; also each 1 switch for the shunt; each 1 plug box with plug and 4 m flexible; each 1 glow lamp 

 bracket with switch and 2 fuses. In addition, for Direct Current: 1 dead-beat standard ammeter, 

 1 ammeter switch; 1 dead-beat precision voltmeter and 1 voltmeter switch; for Alternating Current: 

 with 1 ammeter, 1 voltmeter and 1 voltmeter switch. 



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Rheostats. 



00.5 LO. Double Switch Contact Rheostat, Wall Type, Figure, for connecting up to 110 to 

 160 volts working pressure, without measuring instruments and switchgear, with regu- 

 lating resistance of 36 ohms, variable in 30 steps, for 5 30 amps, maximum load; 

 can be employed either as a series resistance or shunt resistance for division of potential 14. 0. 



50.511. - The preceding, table form, travelling on rollers, Figure on page 126. 15. 0. 



50.512. Double Switch Contact Rheostat, Wall Pattern, Figure, for connecting up to a 

 working pressure of 220 volts; without measuring instruments and switchgear; with 

 regulating resistance of 48 ohms, variable in 30 steps, for 5 20 amperes maximum 



load; can be used either as a series resistance or a shunt resistance for potential-division 14. 0. 



50.513. - The preceding, Table Pattern, travelling on rollers, Figure 15. 0. 



Cl. 3610, 4740 



