Magnetek SBIT-8-W, Инструкция по эксплуатации

Страница: 12 / 19

SBN Pendant Station Manual
October 2019
Page 12 of 19
10. The SBN pendant is double insulated. No metal part extends from inside of the enclosure to the
outside. Because of this, grounding inside the pendant is not necessary. However, because of the
possibility that water could enter the pendant through damaged parts or cable, it is recommended
that a ground wire be left extending to the bottom. Insulation should cover the conductor, but the
end can be left as cut so that it will contact any water that might build up in the lowest part of the
pendant. If there were water inside the pendant and it touched something “live”, the ground wire’s
end would also be contacting the water and would be able to conduct current away. Using a
ground fault circuit would alert the control system to the abnormal condition.
Enclosure Reassembly
1. Ensure that there are no bare or loose conductor strands and that all conductors are insulated
from each other. Make sure that there are no loose pieces of insulation or wire inside the pendant
enclosure.
2. Make sure that the seal for the back cover is intact in the groove of the front of the enclosure and
not damaged.
3. Put the back cover on while making sure that the wires are tucked inside and do not get between
the cover and the enclosure.
4. The top cable gland provides the primary seal between the cable and the pendant. Security of the
seal may be augmented by applying a bead of silicone RTV in the area where the cable gland
and cable meet.
Figure 2: Auxiliary Cable Armor Installation