UL 1690-2015 pdf download
UL 1690-2015 pdf download.Data-Processing Cable.
17 Continuity Test of Conductors
17.1 The cable shall be tested for continuity of each conductor. The continuity testing Is to be conducted in one of the following ways on 100 percent of production by the cable manufacturer at the cable factory:
a) The finished cable is to be tested on each master reel before the final rewind operation or as individual shipping lengths after the final rewind operation. A master reel is any reel containing a single length ot finished cable that is intended to be cut into shorter lengths for shipping.
b) The assembled cable is to be tested before the overall covering is applied. In this case, one shipping length from each master reel of the finished cable is also to be tested. If any conductor in the finished cable in that length is found not to be continuous, 100 percent of the finished
cable on the master reel from which the length was taken is to be tested.
17.2 To determine whether or not the finished cable complies with the requirement in 5.2, each conductor taken separately is to be connected in series with a light-emitting diode (LED), lamp, buzzer, bell, or other indicator, and an appropriate low-voltage a-c or d-c power supply.
18 Heat Shock Test
18.1 The insulation and any jacket of PVC. semirigid PVC, or TPE on. or in, Type OP-i or 2 series cables shall not develop any cracks either on the inside or outside surface when the specimens described in 18.2 are tested as described in 18.3.
18.2 Specimens of each of the following are to be prepared from the finished cable:
a) Insulation representative of each conductor, wire, arid coaxial member in the cable. In the
case of a non-air-gap coaxial member, the member is to be tested as a whole alter removal of
the outer conductor and any overall jacket.
b) Integral insulation and jacket on flat cable.
C) Each individual jacket. binder jacket, cable jacket, arid jacket over a metal covering in the cable (this includes the jackets on coaxial and optical-fiber members).
18.3 Each specimen is to be tightly wound for the number of tums indicated in Table 18.1 around a circular metal mandrel of the diameter Indicated in Table 18.1. Adjacent turns are to touch one another, and each end of each specimen is to be held in place by a clamp or other secure means. The specimenmandrel assemblies are to be suspended in a full-draft circulating-air oven for 60 mm at the temperature indicated for the physical-properties testing of the insulation or jacket in Table 50.182 (PVC), 50.183 (semirigid PVC). or 50.224 (TPE) of UI 1581. No specimen is to touch anything other than the mandrel on which it is wound, At the end of the hour of heating. each specimenmandrel assembly is to be removed from the oven and examined for cracks on the inside and outside surfaces immediately and again after cooling to room temperature in still air. Cracks on the inside surface can be detected from circumferential depressions in the outer surface of a specimen of material other than a fluoropolymer. Circumferential depressions in a fluoropolymer surface are likely to be yield marks (locally stronger points) rather than indicators of cracking.
19 Deformation Test
19.1 The insulation and any jacket of solid FEP. solid FRPE, solid HOPE, solid LOPE, PVC, semingid PVC, TPE, solid XL, or XLPO on or in Type DP-1 or -2 senes cables shall not decrease more in thickness than indicated in Table 19.1 under the load indicated in Table 19.1 while being maintained at the temperature indicated in Table 19.1. The test is to be conducted as described in Section 560 of UL 1581 using test specimens described in 19.2— 19,4,
19.2 The test is to be conducted using specimens prepared from samples of each of the following taken from the finished cable;
a) InsuLation representative of each conductor, wire, and non-air-gap coaxial member in the cable Specimens are to have solid conductors.
b) Integral irsulation and jacket from flat cable.
c) Each individual jacket. binder jacket, cable jacket, and jacket over a metal covering in the cable (this includes the jackets on coaxial and opticalhber members).
19.3 For any jacket that does not need to be tested in tubular fomi (see note a to Table 19.1), a rectangular specimen 1 in long and 9)16 in wide or 25 mm long and 14 mm wide is to be sliced and then buffed, or planed, split or skived to a uniform thickness of not more than 0.050 ±0.010 in or 1.27 ±0.25 mm. with both surfaces smooth.
