- 95 -
[Note]
The
installation
of
a
leakage
relay
on
the
machine
can
not
become
a
reason
for
elimination
of
the
need
for
the
load
side
grounding.
The
load
side
grounding
is
indispensable
for
earliest
possible
detection
of
any
leakage
caused
in
the
generator.
The
absence
of
such
grounding
requires
any
leakage
to
be
detected
by
current
flowing
through
the
human
body
and
is
very
dangerous
because
the
sensitivity
of
leakage
relay
provided
on
the
machine
is
not
sufficient
for
detection
of
such
current.
■
Precaution in grounding
Precaution in grounding is refer to
「
4-4 (3) Precaution in grounding
」
.
■
Operation check
For safety reasons, check on the operation of the leakage relay at the startup
of the machine according to the procedure described below:
①
Start
up
the
machine
according
to
「
5-2
Startup
」
②
Make
sure
that
all
breakers
of
the
load
side
are
"OFF".
③
Set
the
breaker
of
three
phase
and
single
phase
to
"ON".
④
Press
the
TEST
button
on
the
leakage
relay.
If
this
causes
the
LEAK
lamp
(red)
on
the
leakage
relay
to
go
on
and
the
breakers
to
be
activated,
the
leakage
relay
can
be
regarded
as
operating
normally.
⑤
Press
the
RESET
button
and
return
the
breaker
to
the
"OFF"
position.
This
allows
the
breaker
to
be
turned
to
"ON"
again.
The
leakage
relay,
once
it
is
activated,
holds
its
activated
state
until
the
RESET
button
is
pressed
or
the
machine
is
stopped.
(4) Action
for
operation
of
the
leakage
relay
When
the
leakage
relay
is
activated,
then
stop
the
engine,
and
measure
the
insulation
resistance several parts and repair the leak spot before restart the engine.
Summary of Contents for DCA-150LSKE
Page 2: ...Japan...
Page 18: ...14 16 environmental base fluid level warning lamp...
Page 55: ...51 When the single parallel change over switch is parallel side device acts...
Page 93: ...89 12 2 Outline drawing...
Page 94: ...90 12 3 Generator connection diagram...
Page 95: ...91 12 4 Engine wiring diagram...
Page 96: ...92 12 5 Controller wiring diagram...
Page 101: ...97...
