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Wire Wound Rheostats Close Type

Wire Wound Rheostats Close Type .

Layers of electrically oxidized Eureka wire are wound on an insulated heat resistant porcelain tube. The tube is mounted on cast Aluminium supports on each side with rod and nuts. A Brass guide rod is tightened with screws to the projection of the supports. The slider, which moves along the guide rod, has a double contact system and is fitted with a Phosphor-Bronze contact. Three terminals are provided, one connected to the sliding contact and the other two connected to the end windings. The resistance and current values are marked on the slider. The length of the tube varies according to the resistance required.

S.No.	Amps	15cm	20cm	25cm	30cm	35cm	40cm	45cm	50cm
a	10.0	1.5	2.5	3.5	4.5	5.5	6.5	7.5	8.5
b	9.0	2	3	4.5	5.5	7	8	9	10
c	8.0	3.5	5	7	8	9	10.5	12	13
d	7.5	3.7	5.7	7.7	9.7	11.5	13.5	15.5	17.5
e	6.0	5	7.5	10	12	14	16	18	20
f	5.5	6	8	11	14	17	20	23	26
g	5.0	7	11	15	19	23	27	31	35
h	4.2	10	15	20	25	30	35	40	45
i	3.3	14	20	28	34	42	48	57	66
j	2.8	19	28	38	48	57	66	76	86
k	2.3	26	42	56	70	86	100	114	128
l	2.0	40	60	80	100	120	140	160	180
m	1.8	64	96	125	160	190	225	250	290
n	1.6	85	130	150	210	225	300	340	380
o	1.4	115	170	230	290	340	400	450	500
p	1.2	150	225	295	365	445	520	590	670
q	1.0	200	300	400	500	600	700	800	900
r	0.8	340	510	675	835	1000	1165	1340	1500
s	0.6	500	750	1000	1250	1500	1750	2000	2250
t	0.5	650	1060	1340	1680	2000	2350	2730	3000
u	0.4	840	1250	1650	2050	2500	2900	3350	3750
v	0.3	1300	1950	2600	3260	3900	4600	5300	6000

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