EMR-4000
IM02602009E
Setting Example: Analog Output with Active Power P*
*=only available in Devices that offer Power Protection
All settings/thresholds within the power module are to be set as per unit thresholds. Per definition S
n
is to be used as
scale basis.
S
n
=√3* VoltageTransformer
Line-to-Line_Rated_Voltage
* CurrentTransformer
Rated_Current
If thresholds should base on primary side values:
S
n
=√3* VoltageTransformer
Pri_Line-to-Line_Rated_Voltage
* CurrentTransformer
Pri_Rated_Current
If thresholds should base on secondary side values
S
n
=√3* VoltageTransformer
Sec_Line-to-Line_Rated_Voltage
* CurrentTransformer
Sec_Rated_Current
Example – Field Data
CurrentTransformer CT pri =200 A; CT sec = 5 A
VoltageTransformer VT pri = 10 kV; VT sec =100 V
Active power range 1 MW to 4 MW is mapped to an Analog Outputs 0% to 100%.
www.eaton.com
125
100%
0%
R
a
n
g
e
Input Value = ECr . P RMS
Range min
0.29 VAn
Range max
1.15 VAn
1
[VAn]
82.5%
