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Table 50.183
1 z- x! I/ U) f1 o6 w( o) pPhysical properties of 105°C (221°F), 90°C (194°F), 75°C (167°F), and 60°C (140°F) semirigid PVCa
0 g: b4 A: h B! Vinsulations and 75°C (167°F) and 60°C (140°F) jackets from CATV cables, from power-limited
8 `8 ]2 h$ f* L9 m) N- R! O& Fcircuit cable, from cable for power-limited fire-alarm circuits, and from other cables* ?; B) N- Q! H1 m) U" {
1 t+ p, s0 E# N$ NCondition of specimens at time of; q6 v# Y" ^( l
measurement% E7 A |) A l M* q
Minimum ultimate elongation (1-inch or 25-mm
2 y1 \/ [. R$ c" x3 ibench marks)b# x7 d8 w9 p$ C: K
Minimum tensile
4 q5 A2 n3 Y% Z2 K0 nstrengthb
/ ]& y* c: x& A5 _( m0 ~2 [Unaged 100 percent 3000 lbf/in2 or+ g+ d( O: N$ J3 I% B4 w
(1 inch or 25 mm) 20.7 MPa (MN/m2) or9 \* a/ K' e/ j2 a# c
2068 N/cm2 or. i" | j( B. `; ]/ |9 a3 d( y8 M4 g
2.11 kgf/mm2( S& O, A9 U7 [, X, T
Aged in a full-draft circulating-air oven for the
J, J. q( n% }$ _2 `( \) G# {4 w% jspecified timec at the specified temperaturec* D+ y7 B/ C" R5 y/ _
70 percent of the result with unaged specimensd 70 percent of the result& a) _' G4 q9 a3 E% |4 W J
with unaged specimensd6 w) T* U# A$ k6 @; b. d
a Semirigid PVC (SRPVC) designates a partially plasticized thermoplastic compound whose characteristic constituent is8 O1 f+ A1 C3 A! W. f. V3 A
polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.) S7 G4 o9 h1 V7 O8 ]5 |- ?
b Semirigid PVC is to be tested at a speed of 2.0 ±0.2 in/min or 50 ±5 mm/min." d, {8 @+ m* P8 S
c The oven time and temperature are to be as follows:
7 {) s5 p) \9 VTemperature rating of
8 j' P; w' {6 m5 p9 I) K( cinsulation or jacket1 `* e5 L$ ?( @/ d/ a
Specified oven time and temperature- R5 n5 Y# t8 N& c! p
h °C (°F)* j) ~/ D% l b) j
105°C (221°F) 168 136.0 ±1.0°C
. M5 {" c |* R8 J2 R y(276.8±1.8°F)
r: s( t) R- Z8 B ?90°C (194°F) 168 121.0 ±1.0°C! C' W0 q& ]* P& D) O
(249.8 ±1.8°F)
! U) \8 @6 P; a: I! W% q1 @75°C (167°F) 168 113.0 ±1.0°C: `. c. M9 V/ V r. v# c! N
(235.4 ±1.8°F)
V/ Y. p' I6 o5 [6 P5 ?9 d: d# {60°C (140°F) 168 100.0 ±1.0°C
7 U3 r9 ?* D+ d2 _/ k: Q! X* x(212.0 ±1.8°F)7 O4 Q, m; Y3 P
d As an alternative to testing for retention of tensile strength and elongation, it is appropriate to wind aged specimens of the
. g7 |3 i- [$ B60°C (140°F) insulation in place on the conductor onto a mandrel as described under ²Flexibility² in the applicable wire, | Z* B! N: i% h; {
Standard. Unaged specimens are to be tested for tensile strength and elongation. Where aged specimens that are tested for
$ ]& W- c" T& n) W7 }3 fretention of tensile strength and elongation show results that do not comply, it is appropriate to use the flexibility procedure- i5 j9 P: u1 `7 K5 V2 H8 z1 D; U
described under ²Flexibility² as a referee test. |
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