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Annex: Technical Data
1 Parameter setting according to Rule21
1.1 Ride-Through High Voltage and Low Voltage
Required settings in accordance
with UL 1741 SA
Parameter name
Rule 21
High voltage 2 Hv2
Max. threshold voltage
120%Vnom
Max. threshold trip time
160ms
High voltage 1 Hv1
Max. threshold voltage
110%Vnom
Max. threshold trip time
13s
Near nominal (High Voltage)
Max. threshold voltage
110%Vnom
Near nominal (Low Voltage)
Max. threshold voltage
88%Vnom
Low voltage 1 Lv1
Max. threshold voltage
88%Vnom
Max. threshold trip time
21s
Low voltage 2 Lv2
Max. threshold voltage
70%Vnom
Max. threshold trip time
11s
Low voltage 3 Lv3
Max. threshold voltage
50%Vnom
Max. threshold trip time
1.5s
1.2 Ride-Through High Frequency and Low Frequency
Maximum
Maximum
Rule 21
Parameter name
Required settings in
accordance with
UL 1741 SA
High Frequency 2
HF2
High Frequency 1
HF1
Low Frequency 1
LF1
Low Frequency 2
LF2
Max
.
threshold
frequency
Max
.
threshold
frequency
Min
.
threshold
frequency
Min
.
threshold
frequency
Min. threshold
tyip time
Min. threshold
tyip time
Max. threshold
tyip time
Max. threshold
tyip time
62.0Hz
62Hz
64Hz
62Hz
59.9Hz
60.5Hz
60.1Hz
58.5Hz
57Hz
57Hz
57Hz
53Hz
160ms
300ms
300ms
160ms
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