12
Automatic COSYS PFC system
- Ref. : 539931A
Checking the equipment
Before commissioning the equipment, ensure that all
connections are correctly tightened, as the terminals
may become loose during transportation of the equip-
ment from the production plant to the site (interrupter,
switch etc.).
Operation of an automatic PFC system requires the
total current consumed by the installation to be measu-
red.
Powering up
Once the operations in the previous paragraph have
been carried out, the equipment can be started by
closing the upstream panel protection and the PFC
system cabinet switch (depending on the model).
Caution When opening the secondary of a current
transformer, dangerous voltage may appear. When
handling the regulator, it is recommended the current
transformer's secondary is short circuited by fitting a
PTI.
Control relay configuration
The regulator is factory-configured according to the
PFC system type and power.
When powered on for the first time, the regulator will
automatically recognise the connection (order of the
phases), the switching sequence and the reference
current.
Only one parameter needs to be set by the user: value
for the current transformer's primary side, see the regu-
lator manual.
Operating faults
The most common reasons for operational failure
usually relate to the current transformer (see list below):
• Current transformer installed on the load.
• Current transformer installed on the PFC system
supply cable
• Current transformer defective or unsuitable.
• Correct connection
S1
S2
T.C.
• Connection errors
S1
S2
T.C.
S1
S2
T.C.
COSYS 146 A
COSYS 147 A
Current transformers
COMMISSIONING AND MAINTENANCE
