Operation Manual

MI 2092 Power Harmonics Analyser Section IV Connection to power systems
35
WARNING
Connecting to Current Transformers
The secondary of a current transformer must NOT be open circuited
when on a live circuit.
An open circuit secondary can result in a dangerously high voltage
across the terminals.
fig. 23: Connecting to existing CTs on a high voltage system
L2
L1
high
voltage
power plant
measuring instruments
A
xA / 5A xA / 5A
xA / 5A
A
A
L3