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Connection
4.1 Safety instructions
PAC3120 and PAC3220
Equipment Manual, 10/2019,
L1V30425208F-01
41
NOTICE
Short-circuit hazard
Take the maximum possible ambient temperature into account when selecting the
connecting cables.
The cables must be suitable for operation in a temperature that is 20 °C higher than the
maximum ambient temperature.
Note
Only qualified personnel are permitted to install, commission or service this device.
•
Wear the prescribed protective clothing. Observe the general equipment regulations and
safety regulations for working with high-voltage installations (e.g. DIN VDE, NFPA 70E as
well as national or international regulations).
•
The limits given in the technical data must not be exceeded even during startup or testing
of the device.
•
The secondary connections of intermediate current transformers must be short-circuited
at the transformers before the current feeder cables to the device are interrupted.
•
Check the polarity and the phase assignment of the instrument transformers.
•
Before connecting the device, make sure that the line voltage matches the specifications
on the rating plate.
•
Before you start up the device, check that all connections are correct.
•
Before power is applied to the device for the first time, it must have been located in the
operating area for at least two hours in order to reach temperature balance and avoid
humidity and condensation.
•
Condensation on the device is not permissible during operation.
Note
Grounding of current transformers optional
Always connect the transformers and ground them on the secondary side in accordance with
the applicable regulations. Grounding of the current transformers on the secondary side is
not necessary for use in low-voltage switchboards for performing measuring tasks.
Note
Prevent capacitive and inductive interference
Make sure that all data and signal cables are routed separately from control and power
supply cables. In order to avoid the risk of capacitive or inductive interference, these cables
must never be routed in parallel.
Содержание SENTRON PAC3120
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Страница 8: ...Table of contents 6 PAC3120 and PAC3220 Equipment Manual 10 2019 L1V30425208F 01 ...
Страница 36: ...Description 2 7 Slots for expansion modules 34 PAC3120 and PAC3220 Equipment Manual 10 2019 L1V30425208F 01 ...
Страница 70: ...Operator control 6 1 Device interface 68 PAC3120 and PAC3220 Equipment Manual 10 2019 L1V30425208F 01 ...
Страница 110: ...Technical data 10 2 Labeling 108 PAC3120 and PAC3220 Equipment Manual 10 2019 L1V30425208F 01 ...
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