SAE J2222:2020 pdf free

SAE J2222:2020 pdf free.Coiled Electrical Cable – Truck and Bus
This test is primarily intended to ensure that the force required to extend the trailer cable will not cause the SAE J560 connectors to inadvertently disengage while a tractor is making a severe righthand turn in cold weather conditions. Current (Iow) mounting locations require that the tractor lead length be clamped (see Figure 2), providing secondary strain relief here. The trailer connectors are subject to an angular pull force, the performance requirements for which are outlined in SAE J560. The extent of the pull is consistent with TMC guidelines. A pull to the full working length has also been included to allow in case of misapplication to beyond the TMC guidelines ensuring that such a condition will not cause a pull force that exceeds the SAE J560 connector capabilities.
Stretch the relaxed length as defined in 3.5, of the coiled electrical cable to the defined working length as defined in3.4 at a 20°C±5 °C (68 °F) ambient temperature and measure the pull force at that point. The force required shall not exceed 157 N (35 pounds). Then to simulate normal conditioning of a cable, stretch it for one coil flex cycle as defined in 3.7. Then install this working section of the coiled electrical cable in a fixture that stretches it to its relaxed length simulating a cable hooked up in a straight tractor-trailer connection and insert the fixture in a low-temperature chamber (-40 °C±2°C)(-40 °F) for 4 hours. After conditioning, measure the force to stretch the cable to 75% and then to 100% of the working length within 15 seconds after removing it from the chamber. The force required shall not exceed 535 N (120 pounds) and 667 N (150 pounds) respectively.
To simulate normal use, install the working length (3.4) of the coiled electrical cable at the defined relaxed length (3.5) into a fixture and hold for 4 hours in a chamber at (43 °C±2 °C) (110 °F). Remove the cable from the chamber and allow it to cool for 5 minutes ata 20 °C±5 °C (68 °F) ambient temperature. At this point, while the cable is still in the fixture, measure the sag (3.6). The maximum allowable sag is 50 cm (20 inches). Temporarily remove the cable from the fixture and stretch it for one flex cycle (3.7). This simulates a right hand turn. Return the cable to the fixture. After 5 minutes, measure the sag.The maximum allowable sag is 50 cm (20 inches) keeping the cable sufficiently away from the tractor’s deck.SAE J2222 pdf free download.