Hitachi CML176SXW, Service Manual, Page: 40 / 59

9. POWER LINE SURGE TEST (IEC 61000-4-5 SURGE)
9.1 Climatic Condition
The climatic conditions shall be within the following ranges:
9.1.1
9.1.2
9.1.3
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5 Number of tests: at least 5 positive and 5 negative at the selected points.
Repetition rate:at least 1 per minute
Phase shifting:in a range between 0º to 270º versus the AC line phase angle
Polarity: positive / negative
Short circuit current: (8 / 20
µ
s)
Open circuit voltage: (1.2 / 50
µ
s)
Wave-shape of the current surge: (refer to IEC 61000-4-5)
9.2 Test Conditions:
Note: The temperature and relative humidity should be recorded in the test report.
Atmospheric Pressure 86kPa (860mbar) to 106kPa (1060mbar)
Relative Humidity: 10% to 75%
Ambient Temperature: 15
°
C to 35
°
C
9.3
The surge will be applied between lines and between lines and ground.
9.4
If not otherwise specified, the surge to power supply circuits shall be applied synchronized
to the voltage phase at the zero crossing and the peak value of the AC voltage wave.
(Positive and negative)
9.5
The surge voltage for test is from 1KV and increases 1
K
V for each step.
9.6
The recommended severity levels for the surge voltage test is 2.0KV and without any
degradation or loss of function that is not recoverable due to damage of component or
software allowed.
9.7
Display set high-resolution mode, AC input use AC 240V
.
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