Vaisala LT31, Руководство пользователя, Страница: 57 / 294

Chapter 3 ______________________________________________________ Functional Description
VAISALA _______________________________________________________________________ 57
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Figure 25 Power Supply FSP102
The transient protection circuitry has been tested to sustain 2 kV level
transient surges generated according to the EN 61000-4-5 testing
standard. According to the test results, 2 kV level transient surges should
not affect the operation of the circuitry. With higher level and repeated
transient surges, the high surge current will blow the main fuses F1 and
F2. The circuit board is thus protected against high surge currents and the
unit is operational after fuses are replaced.