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TYPE HKB RELAY AND CONTROL UNIT
From a comparison
of
o
5 or
could
be used .
With the three-phase tap
detector pickup cu�rent fur ground faults will
be as
followc:
G-1/5
x
5
1.0
Tap
=
l
un, trip =
Mi n
1.0 x 1.25 a.
m
Tap H-1/l�
x
5
0.5 a.
=
l.25x
would
tap
H
Therefure,
,
d
:dnirr.um ,,
r oun
fault
t
f
m�r,�in
0f sa
e
y .
INSTALLATION
The
l
re
ay s should
be
cr
equ1valent
pa�e l s
their
from J.irt,
mci.stui"e,
heat.
Mount the
relay vertically by means of
tvJO
the
mour:ting
studs
je�ttcn
c a s e or
means
by
the
flange
fur
hulas
on
t
e
studs
case.
Either of
h
utilized
sc r ew
s
�ay
be
electrlc3l
r�l8y.
The
tf1e
t
dlree.;t
terminals ty
lnc
c.n
tl
studs
HKB
1: "'
' ,,.
tLe
l'' _ t 1l:..
j
F G
:;
�l
-_-
_,_��
>
(
)
(8)
5
and
above,
tap
5
in use,
the fault
a.
1. 25 amp.
0.03
0.5a.
amp.
the
used to
b
e
trip
of
1.25 ampere
with
mounted
on switchboard
in a
location
free
v
t i o
a
n
ib r
and
excessiv'2
the
FT
e
f
type
prCJ
r
the
�our:tins
four
of
the se�1-flu3h type FT
or the
mou�tlng
the
fur
groundit
be D�cis
ccJnn�cti0�s
n1sy
D�23nS Cf
r
S"rCl: i::
1:;:! l
v i
'1
t
rel
stat:
�- ·
Nc•.
Style
D.C. Supply
1 3 37179
l2J
V·)lts
l 3 3
1 L)
'
l
This
resistor can
the switchboard in any convenient
ADJUSTMENTS AND MAINTENANCE
CAUTION
l.
Make sure that the neon lamp is
whenever relay
operation
a
This
is rwcessJ.ry to
i n the filter output
danac:c
prevent
to the
tap screw
shL,ulo
t:J�·
sc ':'c"W.
the other
3.
P-.11
cont:JCL'. �
--·--- ·-
1r"
•..
Nllrc\E Pt.flTE.
Fig. 5-- 0 utline And Drilling Plan for The
Used In The
erence Only.
Ohms
OutlintJ
Dr
F:i
' 0 .
Ft,.:�. 1)b
0L _)
r
be mounted on the
location.
in place
is
being
c'leckcC.:.
limit the volta�;e f'c'al::.
at
curr•er� t. s
s•J
hi:::sh
Rectox
Units.
l':.. ' :-,(_ ·.r� 1\
1nserce(
befn:�e
be
,, , r
<1
;
,
i
_,..; :
Pi.f!TE
NAmE.
,,, ----l· ·
!
I
i
l
I
�
-�-i-4-l
i
:
dl
'
External Resistor
HKB
Contro1 Circuit. For
Reiay
&
i
n�. :
ll:i
:)a
.
of
a
e
r
t
ac-:
':�
�--
:::
-1,
•
Ref·
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