Energy Guide

Page 59 of 104 Report No.: HK2107050725-SR
UL 507
Clause Requirement + Test Result - Remark Verdict
TRF No. UL507A
c)Unless the meter is being used to measure
leakage from one part of an appliance to another,
the meter is to be connected between the
accessible parts and the grounded supply
conductor.
P
41.6 A sample of the appliance is to be tested for
leakage current in the as-received condition,
without prior energization except as occurs as part
of the production line testing, but with the
grounding conductor open at the attachment plug.
The supply voltage is to be adjusted to the values
specified in 46.1.10. The test sequence, with
reference to the measuring circuit, Figure 41.1, is
to be as follows:
P
a)With the switch S1 open, the appliance is to be
connected to the measuring circuit. Leakage
current is to be measured using both positions of
switch S2, and with the appliance switching
devices in all their normal operating positions.
P
b)Switch S1 is then to be closed, energizing the
appliance, and within 5 seconds, the leakage
current is to be measured using both positions of
switch S2 and with the appliance switching devices
in all their normal operating positions.
P
c)The leakage current is to be monitored until
thermal stabilization. Both positions of switch S2
are to be used in determining this measurement.
Thermal stabilization is to be obtained by operation
as in the normal temperature test.
P
41.7 Normally the complete leakage current test, as
described in 41.6, is to be conducted without
interruption for other tests. However, with the
concurrence of those concerned, the leakage
current test is not prohibited from being interrupted
to conduct other nondestructive tests.
P
42 Continuity of Grounding Circuit Test P
42.1 The resistance shall be not more than 0.1 ohm
between any point required to be grounded, as
specified in 35.1.2, and:
0.03Ω<0.1Ω P
a)For an appliance intended for permanent
electrical connection, the point on the enclosure at
which the power-supply system is connected.
P
b)For a cord-connected appliance employing a
grounding conductor in the cord, the point to which
the grounding conductor of the power-supply cord
is connected.
P