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TOSHIBA
6F9E0090
further, when this relay is used in a
uotor
circuit, the
detection delay
timer
should be set
lonfler
than the startinv
time (about 120%) so that this relay is not actuated by inrush
current.
If current flowinp in the
uain
circuit
becomes
abnormal
after the
tiee
Deriod of the detection delay timer has
elapsed.
the relay is actuated when the set
tiue
of the response delay
tiler
is over.
4.2 Undercurrent Detection on
Hotors
To utilize the undercurrent detection function, the
relay
is used in a
notor
circuit with a fixed load, to detect livht
or no load conditions.
For
examDIe.
in the case of a
DUUD
UOtOr,
this relay is used to detect undercurrent when the
VOlUue
Of
water
SUDDlied
in a water
Dipe
is low, or in case of a thread
winding rachine, when the tension of the thread
droes.