126 



Experimental Switchboards and Experimental Resistances. 



No. 50514 







50511,50513,50515. 1:10. 



50516, 50517. 1: 10. 



50.514. Double Switch Contact Rheostat (Wall Pattern), cf. F i g. 50,410, for connecting up 

 to 110 volts working pressure, without measuring instruments or switchgear; with 

 24 Ohm Regulating Resistance variable in 21 steps, for a max. load of 5 20 amps.; 

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



50.515. --The p.r e c e d i n g, Table Type, travelling on rollers, Figure 



s. d. 



10.10.0 

 11.10.0 



50.516. Experimental Switchboard with 2 Switch Handles, Type A, Figure, (Briisch's), 

 for taking any small or large currents at low or high terminal voltage from networks 



of 110 volts 6.15. 



Weight, net, about 30 kg; gross, about 42 kg. Packing for land transport 0. 5. 



This rheostat can be used (1) as a Series Rheostat for apparatus which works without interrup- 

 tion of the current, and especially with heavy currents at high terminal voltages at the apparatus 

 (e. g., working an arc lamp); (2) as a Shunt Resistance for division of potential or for taking any heavy 

 current (within the load limits corresponding to the individual positions of the switch on the contacts) 

 at low tension; and (3) as a Shunt Resistance for division of potential or for taking small currents up 

 to 2 amps. 



Complete description and instructions for use on application. The rheostat has 39 contacts, 

 36 ohms resistance and admits of a load of from 5 to 30 amps, according to the position of the switch 

 contact; with the aid of this it is possible to take currents of 0.03 30 amps, and pressures of 0.3 

 to 110 volts from the 110 volt network. 



50.517. --The preceding, Type B, for 220 volts 6.15.0 



This rheostat has 39 contacts, 48 ohms resistance and admits of a load of 5 20 amps, according 

 to the position of the switch contact; with the aid of this rheostat it is possible to take currents of 

 0.08 20 amps, and pressures of 0.8 220 volts from a 220 volt network. 



50.518. - The preceding, smaller, Type C, for 110 volts, Figure 4.10.0 



Weight, net, about 12 kg; gross, about 17 kg. Packing for land transport 0. 3. 



This rheostat is intended for lesser loads; it has 21 contacts, 24 ohms resistance and admits 

 of a load of 5 20 amps, according to the position of the switch contact; with it currents of 0.08 to 

 20 amps, and pressures of 0.8 110 volts can be taken from a 110 volt network. 



.")(), 5 10. Rheostat with 17 contacts, Figure, 20 ohms resistance, for a max. load of 



2 15 amps., in iron frame, for fixing to the wall 1.15.0 



50.520. - The preceding, larger, Figure, with 21 contacts, 25 ohms resistance, 



for 2 20 amps. max. load 2. 5. 



50.521. - The preceding, with 21 contacts, 30 ohms resistance, for 2 25 amps. 



max. load. . 2.15. 



50.522. - The preceding, larger, with 38 contacts, Figure, 50 ohms resistance, 



for 2 20 amps. max. load 4. 5. 



Cl. 63, 3769. 



