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6F9E0090
Please thoroughly read this instruction
manual
before using the
RC803A
Current
SensinD
Relay.
1. General
DescriDtion
This current relay is designed to detect current in AC circuits
with a wide range of
aDDiications,
e.t.,
detection of abnoraai
current of
VariOUS
electrical
eauiment
due to overloads or broken
circuits
(e.g.,
heater circuits), detection of starting current to
autoaaticaiiy advance the secondary resistance on induction wound
rotor motor controllers.
During starting, excessive current such as inrush current,
lay
exceed rated current flow in motor
or
transforaer circuits. this
current relay has an adjustable delay circuit to prevent it
fro&
operating during start-up.
Further, this current
relay
is fail safe. The relay
ooerates
at the
saae
tile
control Dower is applied. and the relay is
de-
energized when the
inout
signal
exceeds the
Dreset
level or control
Dower is removed.
2. Check Before Using
Before
using
this relay. check the following Doints. If any
defects are found, contact the dealer
free
which you purchased this
relay.
2.1 External
Aopearance
Check the relay for any missing Darts and for damage, dirt,
rust, and loosened
screi6
caused during transportation.
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