Siemens 3WX3666-7JA00 Instructions Manual page 7

Front Panel
Internal view
G
Q
G
1 2 3
5
Manual changeover switch
Off/Emergency supply/
Normal supply/Automatic
KN1T
QN1
X1
Lamps
1. GEN. C.B.ON
Lit when emergency supply switch
is switched on, power supply and
emergency supply voltages
present.
2. GEN. READY
Lit when emergency supply is
present.
Q
N
4
3. MAIN C.B.ON
Lit when mains supply switch is
switched on, power supply and
6
mains supply voltages present.
4. MAIN READY
Lit when normal mains supply is
present.
5. TRIPPED
Is lit and interlocked if a 3WN6 has
tripped.
6. RESET
Reset following overcurrent trip.
Time-delay relay
KG1T (T1)
1,5 s to 30 s. Switch-on delay for the
emergency supply switch
Default: 3 s
KN1T (T2)
5 s to 100 s. Reset time for the
normal supply switch
Default: 60 s
KG1T
QG1
Circuit breakers
QN1
Normal supply breaker
QG1
Emergency supply breaker
X1
Terminal block for connection of the
normal supply, emergency supply and
auxiliary supply
7