JBT FoodTech Frigoscandia GYRoCOMPACT M7, Руководство по установке

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7
171-01GB-02
SERVICE INFO
The continuity of the protective bounding circuit is to be verified
by injecting current for at least ten seconds with a current of at
least 15 A from a current source that does not exceed 25 V AC
at 50 or 60 Hz or 60 V DC.
The test is to be performed between the PE connection in the
control panel and relevant points that are parts of the protective
bounding circuit (exposed parts of drive motors, fan motors and
other items connected to PE).
The voltage drops recorded may not exceed the values in table
1 below.
Minimum effective crossectional area
in the tasted branch of the protective
bounding circuit (mm sq.)
Maximum recorded
voltage drop (V)
1,0 4,9
1,5 3,9
2,5 2,8
4,0 2,1
≥
6,0 1,5
Check on insulation resistance
The insulation resistance between the conductors in the power
circuits and the protective bounding circuit measured at 500 V
DC must not be less than 2 Mohm.
table 1.