A-A-58049B
3.9 The equipment shall be capable of operating at the following duty cycles indefinitely without
damage to any components
3.10 Electrical systems components, devices, wiring and insulation shall be suitable for voltages,
current and duty characteristics of the circuits in which they are used shall meet the applicable
requirements of the National Electrical Manufactures Association (NEMA) standards.
3.11 Accessories. The following accessories shall be included:
3.11.1 A copper rod one inch in diameter by eighteen inches in length that will provide a low
resistance path for determining magnetizing current through the contact heads.
3.11.2 Four auxiliary cables consisting of two No. 4/0 extra flexible insulated conductors with
each cable being 15 feet in length, and two No. 2/0 extra flexible insulated cable conductors with
each being 10 feet in length. Each conductor shall have a 4/0 connector on each end and shall
have a suitable heavy duty, oil-resisting insulation.
3.11.3 A 100 Watt black light for reviewing fluorescent magnetic particle indications shall be
provided.
3.11.3.1 The black light shall have an intensity of at least 1000 microwatts per square centimeter
at 15 inches, and shall have a peak transmission wavelength of 365 nanometers + 1.0%.
3.11.3.2 The lamp shall be mounted on swivel bracket which shall permit the lights to be
directed at the parts under inspection.
3.11.4 A hood suitable for fluorescent inspections including flame retardant curtains, a white
light source and ventilation fan shall be provided.
3.11.4.1 The hood shall allow not more than 2 foot-candles (20 lux) of ambient light into the
inspection area.
3.11.5 A set of replaceable copper braid pads for the headstock and tailstock contact plates.
3.11.6 The unit shall have a tank suitable for holding the suspension and particles, it shall include
a hose long enough to reach the entire inspection area, and a nonmagnetic low pressure spray
nozzle.
3.11.7 The units shall have an agitation system capable of maintaining magnetic particles in
suspension.
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