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Table 50.1832 }; G+ f" j; D) m
Physical properties of 105°C (221°F), 90°C (194°F), 75°C (167°F), and 60°C (140°F) semirigid PVCa) C- o/ Y' d. D
insulations and 75°C (167°F) and 60°C (140°F) jackets from CATV cables, from power-limited
8 a) Z7 x) L' |+ lcircuit cable, from cable for power-limited fire-alarm circuits, and from other cables6 u0 x, K' {* ]" k
+ f& w9 X, J% a3 w7 D& P
Condition of specimens at time of
7 V4 @2 q$ M |2 }4 I2 Y% f& mmeasurement
C# t. n2 ~5 } F: \2 {3 l+ j7 ZMinimum ultimate elongation (1-inch or 25-mm# J2 N4 i& V' e) ?1 ^ N; i+ Q
bench marks)b. x4 d" g% B4 Q& Z
Minimum tensile# J# I% M) k1 |8 U0 L. D+ b
strengthb
+ ~. ] I* M* D% w3 u: sUnaged 100 percent 3000 lbf/in2 or
% N0 [ d+ {! r(1 inch or 25 mm) 20.7 MPa (MN/m2) or) A1 I/ S$ ^8 y0 n0 w, A/ ?) w) e
2068 N/cm2 or
8 e) N! y" Q5 r2 d q" j2.11 kgf/mm2% f& s& i! }% D2 K% S3 h
Aged in a full-draft circulating-air oven for the$ G: D( J m" X
specified timec at the specified temperaturec7 f6 P1 W0 T. i8 w
70 percent of the result with unaged specimensd 70 percent of the result2 _ z% ?+ S+ V& S
with unaged specimensd
1 [0 R! ]( V0 a5 |+ S: ?) ^a Semirigid PVC (SRPVC) designates a partially plasticized thermoplastic compound whose characteristic constituent is
1 g& I9 T# p$ B4 V# z8 D3 x4 Ypolyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.2 B% ~# V3 `/ b! y8 h2 p+ b8 l4 E
b Semirigid PVC is to be tested at a speed of 2.0 ±0.2 in/min or 50 ±5 mm/min.& J+ u5 l R1 `" O+ o! I6 ]
c The oven time and temperature are to be as follows:" `! ^! Y& a$ w0 j1 m( D
Temperature rating of
8 n3 Z, E* H7 T5 d6 Vinsulation or jacket
+ M' H i8 ~" {! ZSpecified oven time and temperature1 i3 Z' a! _1 A- G
h °C (°F)
" F' y9 X: t/ M: ?. _: V2 x8 R! {& b105°C (221°F) 168 136.0 ±1.0°C
/ t T+ }/ b( N1 H(276.8±1.8°F)
/ t) o& Z& U' U3 ]' o _90°C (194°F) 168 121.0 ±1.0°C
7 @! J& p5 k0 V- ^(249.8 ±1.8°F)& ^, i: U) q# T% b+ F+ o
75°C (167°F) 168 113.0 ±1.0°C
x4 @$ M& x+ g; v8 b; L(235.4 ±1.8°F)
, L' C* U6 G9 B60°C (140°F) 168 100.0 ±1.0°C" a5 N+ i; k0 E8 x+ s2 L$ y
(212.0 ±1.8°F)
. g8 Y Q9 C' o: kd As an alternative to testing for retention of tensile strength and elongation, it is appropriate to wind aged specimens of the
5 j3 e/ p5 u# k7 u- T+ I) T) l# \60°C (140°F) insulation in place on the conductor onto a mandrel as described under ²Flexibility² in the applicable wire) z* v5 X" r; M% m, [0 p
Standard. Unaged specimens are to be tested for tensile strength and elongation. Where aged specimens that are tested for
" ]: T/ a1 a" U) ^: [2 ?, Fretention of tensile strength and elongation show results that do not comply, it is appropriate to use the flexibility procedure
- V6 Y, b# N9 I' i. z* wdescribed under ²Flexibility² as a referee test. |
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