Applying The Measuring Current; Checking The Displayed Measured Values - Siemens SENTRON PAC4200 Manual

Commissioning

5.5 Applying the measuring current

5.5 Applying the measuring current
The device is designed for connection of current transformers with secondary currents of 1 A
and 5 A. It is only possible to measure alternating currents.
The current measuring inputs can each be loaded with 10 A continuously or with 100 A for 1
second.
Open transformer circuits will result in electric shock and arc flashover.
Will cause death, serious injury or property damage.
Only measure current with external current transformers. Do not use fuses for circuit
protection. Do not open the secondary circuit of the current transformers under load. Short
circuit the secondary current terminals of the current transformer before removing this
device. The safety information for the current transformers used must be followed.
NOTICE
Alternating current measurement only, otherwise the device will become non-functional
Use the device to measure alternating current only.
Direction of current flow
Please take account of the direction of current flow when connecting the current measuring
inputs. With inverse connection, the measured values are inverted and receive a negative
sign.
To correct the direction of current flow, it is not necessary to reverse the input terminals.
Instead, change the interpretation of the direction in the device settings.
You can find information about the device settings in the "Basic parameters" section of the
"Parameterization via the user interface" chapter.
See also
Measuring inputs (Page 16)
Safety information (Page 53)
5.6

Checking the displayed measured values

Correct connection type
With the help of the table "Displaying the measured variables depending on the connection
type", check whether the measured variables are displayed in accordance with the
connection type executed. Any deviation indicates a wiring fault or configuration error.
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DANGER
System Manual, 05/2019, A5E02316180B-05
PAC4200