janitza UMG 605 PRO, Руководство пользователя и технические данные

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UMG 605-PRO
www.janitza.de
17
6. 5 Current measurement
The device:
• is intended for connecting current
transformers with secondary currents
of ../1 A and ../5 A.
• does not measure DC.
• has current measurement inputs that
are continuously loaded with 6 A or loaded
with 100 A for 1 second.
m
WARNING!
Risk of injury due
to electric voltage
on current transformers!
On current transformers that are operated
open on the secondary side,
high voltage peaks that are dangerous to
touch can occur, which can cause severe
bodily injuries or death.
Therefore, note the following:
• Avoid operating the current
transformers open.
• Short circuit all unloaded current
transformers.
• Connect the earthing connections provided
on the current transformer to the earth.
• You must short circuit the secondary
connections on the current transformer
before interrupting the power supply.
• If a test switch, which automatically
short-circuits the secondary wires
of the current transformer is available,
it is suffi cient to set this to the "Test"
position as long as the short-circuiting
device has been checked beforehand.
• Ensure that the attached screw-
type terminal is affi xed to the device
suffi ciently using the two screws.
• Safe open-circuit current transformers
are also dangerous to touch when they
are operated open.
C
NOTE!
It is not necessary to confi gure
a connection schematic
for measurement inputs L4 and I4.
Consumer
L3
L1
L2
N
S
1
S
2
S
1
S
2
S
1
S
2
S
1
S
2
Fig.
Current measurement via current transformers
connection example.
m
WARNING!
Risk of injury due
to electric voltage!
Current measurement inputs are
dangerous to touch.