REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04
REF542
plus
: Installation and Commissioning
58 / 80
9 Technical data
9.1 Analog input channels
Accuracy for measurement including the current/voltage sensors class 1.
Accuracy for protection class 3
9.1.1
With current and voltage transformer:
Rated current In
1A or 5A
Rated voltage U
n
:
100V (also suitable for 110V)
Rated frequency f
n
:
50 Hz / 60 Hz
Thermal load capacity
Current path
250 I
n
(peak value) dynamic,
100 I
n
for 1s,
4 I
n
continuous,
Voltage path
2 U
n
/
√
3 continuous.
Consumption
Current path
≤
0.1 VA with I
n
Voltage path
≤
0.25 VA with U
n
9.1.2
With current and voltage sensor
Rated current I
n
150
mV
(rms)
Rated voltage U
n
: 2V
(rms)
Rated frequency f
n
:
50 Hz / 60 Hz
