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Qc4002™ MkII module
2.4.2 Output terminal board
The cubicle provides a terminal board for easier
connection of cables. It is situated below the control
and indicator panel.
S2 .......Emergency stop button
Push the button to stop the generator in case
of an emergency. When the button is
pressed, it must be unlocked, by turning it
anti-clockwise, before the generator can be
restarted. The emergency stop button can be
secured in the locked position with the key,
to avoid unauthorized use.
N13 .....Earth leakage relay
Detects and indicates an earth fault current
and activates the main circuit breaker Q1.
The detection level can be set at 30 mA fixed
with instantaneous trip but can also be
adjusted between 30 mA and 250 mA with
time delayed (0 - 1 sec) trip. N13 has to be
reset manually after eliminating the problem
(reset button marked R). It can be overridden
by means of the earth leak switch (S13,
labelled IΔN) but has to be tested monthly by
pushing test button T13.
S13......Earth relay lock-out switch (N13)
This switch is located inside the cubicle and
is labelled IΔN.
Position O: No tripping of the main circuit
breaker Q1 when an earth fault occurs.
Position 1: Tripping of the main circuit
breaker Q1 when an earth fault occurs.
Q1 .......Main circuit breaker
Interrupts the power supply X1 when a
short-circuit occurs at the load side, or when
the overcurrent (QAS 200: 290 A /
QAS 250: 360 A) protection is activated.
When activated, Q1 interrupts the three
phases towards X1. It must be reset
manually after eliminating the problem.
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Qc4002
G
!
OK
LOG
N13
Q2
N13
Q1
Q3
Q4
Q5
Q6
S2
Q1
X1
L1L2
OFF
L1-N
L2L3 L2-N
L3L1
LL LN
L3-N
S13
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