Instruction manual – AQ 110 arc protection unit
41 (80
)
AQ101 (all units):
I/O
Function
S1
Monitoring of arc light in outgoing feeder cable
compartment for selective trip (Zone 3)
S2
Monitoring of arc light in outgoing feeder breaker
compartment and busbar compartment (Zone 2) (*)
BO1
Sending light information to AQ 110 unit of incoming
feeder 1
BI1
Receiving overcurrent information from AQ 110 unit of
incoming feeder 1
BI2
Receiving master trip information from AQ 110 unit of
incoming feeder 1
T1
Trip of outgoing feeder circuit breaker CB4-x in case of
activation of S1 and BI1. Also performing master trip in
case of fault in Zone 2.
T2
Not in use
T3
Not in use
T4
Not in use
SF
System failure dry contact for alarming
*Sensor channels S3, S4 and S5 may be utilized if more sensors are required
in Zone 2
6.2.3
T
RIP LOGIC
,
CONNECTION DIAGRAM AND DIPSWITCH
SETTINGS
CB1
CB2
CB4-x
Zone 1
x
x
Zone 2
x
x (MT)
Zone 3
x
CBFP of CB1
x
CBFP of CB4-x
x
AQ 110
T1
T2
AQ 101A-x
T1
Table 6-2: Scheme IA1 trip logic
