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'* 'Ffwn ; Buffalo - Large Motor Division
VM 245-2274
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** July 31, 1975
.
&a,ect: Motor Lead Wire (Cable)
` R & D Center - Churchill .` Corporate Stds - 501-3Y48
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Mr. W. M. Hanna - Materials Engineer
------- -- --- -- . .....v ..
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cc: Mr. R. P. Griffenhagen
Request Material Number immediately for 600 volt cable, asbestos braided silicone rubber cable with 3/32 inch rubber wall~tKTciEness. Cable Vs identified as Cerro's Rocktherm Table SR-MLA Cable and is manufactured by Cerro Wire and. Cable Company, Division of Cerro Corporation; Nicol 1 & Canner Sts.; New Haven, Connecticut 06504.
Application is motor lead wire and presently we intend to stock size, 250 MCM (see attachment).
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ROCKTHERM FLEXIBLE STRANDED CLASS 180 MOTOR LEAD WIRE
. Table SR-ML, 600 Volts, Operating Temp. 200 C (Intermittent),
180 C. (Continuous)
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;
- - CONSTRUCTION: Flexible stranded tinned copper,
silicone rubber extrusion with a glass braid saturated
with a heat and moisture-resistant finish.
.
ADVANTAGES: These cables stond up excellently under vornished dip and bake processes, and are especially . suited to high temperature leads, where a small
APPLICATION: Used for leads to motors, transformers or
other electrical circuits where flexible conductors are required to operate under high temperature conditions.
diameter, flexible cable is desired,
SUe AWG
. Stranding
16 16 14 12 10
. 16/.010 26/.010
. . 41/.010 ' ' 6S/.010
105/.010
-
8.
133/.0111
6 . 133/.0I40
. 4 , 133/.0177
2 133/.0223 -
1 259/.0180 ,
1/0 2/0 3/0 4/0
- 259/.0202^ 1 259/.0227
' 259/.0255 ' , 259/.0286
lore __ Diameter-*
(in.)
.045 .057 .072' .093 .127
.166 .205 .260 .327 .370
.415 .467 .526 .591
Intulotion Thicknett in 64tht
2 2 2 2 3
4 4 4 4 5
.5 5
-5 5
raid Thicknett
Milt
9 9 9 9 9
9 9 9 9 20
20 20 20 20
Nominal Finished
Diameter (in.)
.125 .135 .150 .170 .240
.305 .345 .400 .470 .570
.615 .665 .720 .790
r
Net Weight (lbi./M')
13 16 23 32 56
92 127 186 ^73 379^
454 566 671 832
Ampadfy*
24 30 40 55 82
115 154 205 280 325
385 450 520 600
ROCKTHERM FLEXIBLE STRANDED CLASS 180 MOTOR LEAD WIRE
Table SR-MLA, 600 Volfs, Operating Temp. 200C. (Intermittent),
180 C. (Continuous)
CONSTRUCTION: Flexible stranded tinned copper. ^
required to operote under high temperature conditions.
silicone rubber extrusion with an asbestos braid saturated yrith a silicone resin finish.
'
The asbestos braid has exce\llesnt resistance toabrasion. ADVANTAGES: These cables stand up excellently under
, APPLICATION: Used for leads to motors, transformers
varnish dip and bake processes, and are especially suited
i or other electrical circuits where flexible conductors are' to high temperature leads, where a small diameter,
flexible cable is desired.
' *e MCM
. VV ' 5t"sl,-' ' * . u?'. Stranding .
. . Bora
' . Diameter
(U.)
Insulation
TNckneu in 44the
Braid TNcknett
Milt
Nominal finithed Diomotor
(In.)
Nat Weight (lb*./M)
4 Ampacity*
`^250 . 427/.0242
.653
6
45
.925
997
655
300 * 427/.0266
.716
6
45
.985
1181
745
350
427/.0286
.772
6
4$
1.040
1347
810
500
427/.0342
..923
6
45
1.195
1849
1015
'Ampocity bated on tingle conductor in free air. 30C. ambient. 200C. conductor temperature*. (Coble detigned for intermittent ute at 200C..
continuous ute at tS0C.)
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