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Dnepr MT9 - Current-And-Voltage Regulator Adjustment

Dnepr MT9
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t
•
)
Adjusting the Current-and-Voltage
R.egula
tor
The
current-and-voltage
regulator
is
subject
to
adjustment
in
case
the
following
faults
are
detected
during
check-up:
cutting
-in vo
lta
ge
or
the
relay
devia
tes
by 0
.5
V from
the
spec
i-
fied
limits;
Fig.
41.
Diagrniil
of
the
connect
i
on
of
the
cur,rent-and-vo
lt
age
regula-
lor
for testi
ng
lhe r
everse
-c
urr
ent
relay
Fig.
42
.
Diagram
of
the
con-
nPction of
the
current-and-
vollage
regulator
for t
esting
the
voltage
regulator
the
difference
betwe
en
the
vo
ltage
being
regulated
and
the
cut-
.t in g-in
voltage
of
the
reve
r
se-current
relay
is l
ess
than
0.3 V;
th
e
regulat
ed
voltage
deviates
by
0.5 V from
the
specified
li-
mits;
r
everse
current
for
cutting
off
the
reverse-current
rela
y is
0.5
v
above
the
specified limit.
Before
adjustment,
inspect
the
surfaces
of
the
mo
va
ble
and
fixed
contacts
since
the
reliable
operation
of
the
cu.rrent-and-Yoltage
regu
-
lator
is
much
dependent
on their
clean
lin
ess
and
good
condition.
Blackened
contacts
should
be
washed
with
alcohol,
the
burnt
con-
tacts
to
be
trimmed
with
a
fine-grained
sandpaper
of 80
to
!00
grain
size,
then
washed
with
alcohol.
Adjust
the
current-and-voltage
regulator
by
varying
the
tension
of
the
springs
of
corresponding
armatmes
and
bending
the
s
hanks
of
the
angles.
If
the
parameters
obtained
are
greater
than
required,
l
oosen
the
tension
of
the
corresponding
springs,
if
the
parameters
are
l
esser,
increase
the
tension.
Avoid
using
a
sc
rewdriver
for
bending
the
s
hanks
of
the
angles.
After
trimming
the
contacts
and
repair
i
ng
the
current
-
and
-
volt-
age
regulator,
(in
case
repairs
invoh
'e
replacement
of
contact
assem-
blies, coils,
clc.),
check
and,
whenever
necessary,
adjust
the
gaps
bet
ween
the
armature
and
cores
as
wel l
as
between
the
contacts.
The
gap
between
the
armature
and
core
of
the
volt
age
regu
l
ator
must
be
set
w
ithin
0.9
and
1.1
mm,
with
the
upper
pair
of
contacts
closed,
by sh
ifting
the
angle
with
the
contact
holders.
lll

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