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Table 50.183- U7 Z+ F) S: |) {9 R
Physical properties of 105°C (221°F), 90°C (194°F), 75°C (167°F), and 60°C (140°F) semirigid PVCa# ?) P9 ?1 M" e! N
insulations and 75°C (167°F) and 60°C (140°F) jackets from CATV cables, from power-limited
6 |# k& s9 z0 R: jcircuit cable, from cable for power-limited fire-alarm circuits, and from other cables. e" }+ @2 } A% O4 F
# m9 B6 t, U7 I( r" F
Condition of specimens at time of. ?, _# j0 Y) E( Y! k
measurement
9 K" h3 p- R% [& f6 c+ e+ xMinimum ultimate elongation (1-inch or 25-mm6 }( m4 K! D! v6 ^: y) i
bench marks)b
, t; R& u5 b; n/ L$ UMinimum tensile6 K; f+ n6 c# g
strengthb
8 F2 `4 k; z o4 e" O0 RUnaged 100 percent 3000 lbf/in2 or
( M, m8 G% V9 e9 s3 W$ _4 O) t. T(1 inch or 25 mm) 20.7 MPa (MN/m2) or
! v( Z R7 l5 E, d3 a- h2068 N/cm2 or
1 o$ [7 F* g3 p$ I2.11 kgf/mm2
& U/ Y5 Z* u9 i0 O6 IAged in a full-draft circulating-air oven for the& { S% N3 k& {
specified timec at the specified temperaturec
' A; Z9 }: ^6 _ f: _+ |70 percent of the result with unaged specimensd 70 percent of the result
) g d$ k( b" X% D- z; n. I! \with unaged specimensd
6 _1 }4 }7 q6 Z/ Ea Semirigid PVC (SRPVC) designates a partially plasticized thermoplastic compound whose characteristic constituent is
8 b5 ?7 _1 ]5 p% J* U7 i0 Bpolyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate., B0 G2 Y6 o; h
b Semirigid PVC is to be tested at a speed of 2.0 ±0.2 in/min or 50 ±5 mm/min.
1 m7 p7 R1 d" W/ y' Kc The oven time and temperature are to be as follows:$ k3 N/ T6 l% L9 h7 T
Temperature rating of
: x) k1 H2 ?3 ^insulation or jacket m6 V5 [ [5 e) C! u
Specified oven time and temperature7 H, T+ |3 L8 }3 Z: a4 A' r4 M* N
h °C (°F)
2 C9 g" [, I: T8 Q5 u" ?! t105°C (221°F) 168 136.0 ±1.0°C
. ~7 t( a0 v3 @. e. J(276.8±1.8°F), s3 Z7 a4 B% X0 i+ P$ {
90°C (194°F) 168 121.0 ±1.0°C
: v0 L8 `3 P' ^(249.8 ±1.8°F)
' A9 h1 p4 u C0 r75°C (167°F) 168 113.0 ±1.0°C
, k6 f3 m! P% [(235.4 ±1.8°F)/ d8 e" {3 d$ q
60°C (140°F) 168 100.0 ±1.0°C& s! h# `. w! X% T! j
(212.0 ±1.8°F)
4 _1 x; S; c6 W: R0 {2 B ld As an alternative to testing for retention of tensile strength and elongation, it is appropriate to wind aged specimens of the# D0 g" w+ T+ L, d J
60°C (140°F) insulation in place on the conductor onto a mandrel as described under ²Flexibility² in the applicable wire
, p2 D& U2 q( q) N$ S# k. t8 v3 QStandard. Unaged specimens are to be tested for tensile strength and elongation. Where aged specimens that are tested for9 x) X8 G+ w: s8 k3 v
retention of tensile strength and elongation show results that do not comply, it is appropriate to use the flexibility procedure
. r$ I, \) S0 R/ Ldescribed under ²Flexibility² as a referee test. |
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