ABB i-bus
®
KNX
Device technology
© 2008 ABB STOTZ-KONTAKT GmbH
18
2.1.6
Rated current
output 20 A
Rated values
Number
3
U
n
rated voltage
250/440 V AC (50/60 Hz)
I
n
rated current
20 A
Switching currents
AC3* operation (cos
ϕ
= 0.45)
DIN EN 60 947-4-1
16 A/230 V
AC1* operation (cos
ϕ
= 0.8)
DIN EN 60 947-4-1
20 A/230 V
Fluorescent lighting load AX
to DIN EN 60 669-1
20 A/250 V (140
μ
F)
2)
Minimum switching performance
100 mA/12 V
100 mA/24 V
DC current switching capacity (resistive load) 20 A/24 V=
Service life
Mechanical service life
> 10
6
Electronic endurance
to DIN IEC 60 947-4-1
AC1* (240 V/cos
ϕ
= 0.8)
> 10
5
AC3* (240 V/cos
ϕ
= 0.45)
> 3 x 10
4
AC5a (240 V/cos
ϕ
= 0.45)
> 3 x 10
4
Switching times
1)
Maximum relay position change per
output and minute if only one relay is
switched.
93
1)
The specifications apply only after the bus voltage has been applied to the device for at least 10 seconds. Typical delay of the relay is approx. 20 ms.
2)
The maximum inrush-current peak may not be exceeded
*What do the terms AC1, AC3 and AC5a mean?
In Intelligent Installation Systems different switching capacity and performance specifications
which are dependent on the special application have become established in industrial and
residential systems. These performance specifications are rooted in the respective national and
international standards. The tests are defined so that typical applications, e.g. motor loads
(industrial) or fluorescent lamps (residential) are simulated.
The specifications AC1 and AC3 are switching performance specifications which have become
established in the industrial field.
Typical application:
AC1 –
Non-inductive or slightly inductive loads, resistive furnaces
(relates to switching of ohmic/resistive loads)
AC3 –
Squirrel-cage motors: Stating, switching off motors during running
(relates to (inductive) motor load)
AC5a – Switching of electric discharge lamps
These switching performances are defined in the standard DIN EN 60947-4-1
Contactors and
motor-starters - Electromechanical contactors and motor-starters
. The standard describes
starter and/or contactors which previously preferably used in industrial applications.