Atlas Copco QES 40-50 Kd S2/S3A ESF - Page 66

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Q600... Circuit breaker for X10
Interrupts the power supply X10 when a
short-circuit occurs at the load side, or when
the overcurrent protection is activated.
When activated, Q600 interrupts the three
phases towards X10. It must be reset
manually after eliminating the problem.
X10 .....Main power supply (400 V AC)
Terminals L1, L2, L3, N (= neutral) and PE
(= earthing), hidden behind the control panel
door and behind a small transparent door.
EM1 ....Insulation monitoring relay
Checks the insulation resistance and
activates Q600 when the insulation
resistance is too low.
0
0
20
40
80
100
200
V
A
300
400
500
Q600
X10
EM1