METREL MI 2893 - Page 147

MI 2893 / MI 2892 / MI 2885 Connection setup
147
Figure 121: Voltage ratio for 11 kV / 110 transformer example
Instrument should be connected to the network according to figure below.
N
L2
L1
high
voltage
power plant
measuring instruments
A
A
A
L3
xA / 5A
xA / 5A
xA / 5A
Transformer
Type:
:
Measurement Settings  Connection setup  Nominal Voltage 
Y
Δ
:
1
Figure 122: Connecting instrument to the existing current transformers in medium voltage system (Aaron
/ OpenDelta)