CP SB1
CP SB1 - 2
CP SB1
The front panel of the
CP SB1
provides the following functional components:
•
Transformer High Voltage:
–
Outputs (Source) for the injection of current or voltage on the individual phases of the
transformer
–
Inputs (Measure) for the voltage measurement
Note:
The inputs and outputs of the respective connections (U/H1, V/H2, W/H3, N/H0) are
connected to the transformer using Kelvin clamps.
•
Transformer Low Voltage:
–
Outputs (Source) for the injection of current or voltage on the individual phases of the
transformer
–
Inputs (Measure) for the voltage measurement
Note:
The inputs and outputs of the respective connections (u/X1, v/x2, w/x3, n/X0) are
connected to the transformer using Kelvin clamps.
•
Tap Changer: Two potential-free contacts for switching the tap changer
•
AC input for connection to the
2KV AC
output of the
CPC 100
•
DC input for connection to the
6A DC
output and
I AC/DC
input of the
CPC 100
•
AC output for connection to the
V1 AC
input of the
CPC 100
•
DC output for connection to the
V DC
input of the
CPC 100
•
Serial interface for the
CPC 100
(
TRRatio
and
TRTapCheck
test cards) to control the
CP SB1
•
Equipotential ground terminal for grounding the
CP SB1
close to the position of the
operating staff
►
Switch off the power supply of the tap changer.
►
Connect the Kelvin clamps to the bushings.
►
Connect the cables to the Kelvin clamps. Make sure that the cables show upwards and that
each color is connected to a different phase.
►
Connect the cables from the Kelvin clamps’ voltage sense outputs to the
CP SB1
’s
transformer inputs. Observe the color code.
►
Make sure to measure the voltage to ground at the terminals of the tap changer. If no voltage
is measured, connect the flexible terminal adapters to the "up" and "down" terminals of the
tap changer.
►
Connect the cables ("up", "down") to the
CP SB1
.
►
Connect the
CP SB1
to the
CPC 100
according to ”Functional Components of the CP SB1”
on page CP SB1-2.
►
Switch on the power supply of the tap changer.
►
Remove all grounding connections of the terminals except one per winding. Use Neutral (N)
for the grounding connection if accessible.
►
Start the measurement according to page Transformer-1 and page Transformer-7.
Transformer High Voltage
Tap Changer
Up
Down
Transformer Low Voltage
Read the
manual
LEDs
AC Input
DC Input
V1 AC Output
V DC Output
Serial
connection
Equipotential
ground
terminal
DANGER
Death or severe injury caused by high voltage or current
►
Position the
CP SB1
in the safety area and do not enter this area during the entire
measurement.
►
Connect the
CPC 100
and
CP SB1
using the delivered grounding cable.
►
Connect the grounding cable of the
CP SB1
at a safe grounding point at the
transformer.
►
Do not operate the test equipment without safe connection to ground.
►
Make sure that all high-voltage connections of the transformer are removed.
►
Make sure that all terminals of the transformer are connected to ground.
Functional Components of the
CP SB1
Connecting the
CPC 100
and
CP SB1
to Power Transformers