Third Party Verification Claim
Page 95 of 129 Report No.: JAT2209271146SR-1
UL 859
Clause
Requirement + Test
Result - Remark
Verdict
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66.2.2
The motor is to be operated with the armature
locked until ultimate results have been determined
or for 7 hours, whichever occurs first. Noncurrent-
carrying metal parts of the motor that are insulated
by the material under test are to be connected to
ground through a 3- ampere, quick-acting, plug
type fuse
N/A
66.2.3
With reference to 66.2.2, when the length of the
test is limited by an external factor – such as the
functioning of a reliable, nonuser-serviceable
device (such as a fuse or circuit breaker), or the
functioning of the maximum-size branch-circuit
protective device to which the equipment is likely
to be connected (but not less than 30 amperes)
– the test is to be terminated when an
overtemperature or overcurrent device functions to
open the circuit
N/A
66.3
Overload-burnout conditioning
N/A
66.3.1
Thermoplastic insulating material employed in
motors with a stalled-rotor current greater than
twice the normal operating current shall comply
with the following after the overload- burnout
conditioning described in 66.3.2
N/A
The 3 ampere fuse shall remain intact and
N/A
The thermoplastic material under test shall comply
with the requirements in Dielectric Voltage-
Withstand Test, Section 45 immediately following
the overload-burnout conditioning
N/A
66.3.2
Each of three samples of the motor is to be
subjected to operation at normal load for 1 hour.
Immediately following operating at normal load,
the load is to be increased in steps of 10 percent
of the rated current for each of four successive 1-
hour periods, followed by two 1/2- hour periods,
followed by eight 1/4-hour periods, followed by
such additional periods of 5 minutes until the
motor burns out. During the test, noncurrent-
carrying metal parts of the motor that are
insulated by the material under test are to be
connected to ground through a 3- ampere, quick-
acting fuse
N/A
66.3.3
With reference to 66.3.2, the opening of the circuit
by an overtemperature or overcurrent protective
device, is considered an acceptable end of test
N/A
66.4
Thermal aging
N/A