HP 435B Service Manual

In sta ll at i o n

M ode l 435 Β
2-6 .

P ower Requirements
Th e P o w er M ete r r equir es α p owe r so ur ce wi t han
o u t pu t o f 100, 120, 220, o r 240 V ac +5% ο , -10% ο s in-
g l e ph ase, 100 a nd 120 vo l ts, 48 to 66 Hz and 360
to 440 Hz, 220 a nd 240 v o l ts, 48 to 66 Hz . P o w e r
co n s ump t i o n i s 20 V - Α m a ximum .
2-2
W A
RN I N G
If t hi s in st rum e n t is to be e n e
r g
i zed vi a
an ex te rn a l au tot r a n sfo rm e r , m ak e s ure
t h e a u tot r a n sfo rm e r co mm on te rmin a l
i s co nn ecte d to t h e ea
r
t h te rmin a l of
t
he
powe
r
sour ce .
2-7 .

L
i n
e
V
oltage Selection
BEF
O
RE
S W
I
TC
HI NGON THI
S
IN-
STRUMENT,
m a k e s ur e t h
e
in st rum e n t
i s set to t he vo l tage of t h e powe r source .
Fu ses m a y b e o rd e r e d und e r HP pa rt numb e r s
2110-0234, 0 .1 Α (250 V sl o w bl ow) f o r 100/120 V ac
o p e r at i o nand 2110-0040 0 .062 Α (250 V sl o w bl o w)
f o r 220/240 Vac o p e r at i o n .
2-8 .

P ower Cable
CAU TIO N
Fi g ur
e 2-2 pr
ovid
es
in
st ru ct
i
o
n
s
f o r lin
e
v o l
tage
a
nd fu
se
se l
ect
i o n . Th
e
lin
e
v
o
l
tage se
l
ect
i o n
ca
rd
and pr o pe r fu se a r
e
f actory in sta ll
e
d f o r 120 V ac
o p e r at i on .
O p erating voltage is s h own
in mo du le win d ow .
S ELE
CTIO
N
O
F
O
PER ATI N
G
V
O
L TAG E
1 . Open cover door, pull t h e FU S E PULL lever an d rotate to
left . R emove t h e f u
se
.
2 . R emove t h e L ine V oltage Selection Card . P ositio n t h e car d
so t h e line voltage appears at top-left cover . P us h t h e car d
firmly into t h e slot .
3 . R otate t h e Fu se Pull lever to its normal p osition . Insert α
fuse of t h e correct value i n t h e h ol d er . Close t h e cover
d oor .
To
a v o id t h e poss i b ili t y
of haza rd o u s electri-
cal s h oc k , do n ot o p e r ate t hi s
i
n st rum e n t at
lin e vo l
tages
g r
eate
r
t h an126 .5 Vac w i t h lin e
f r eq u e nc i es g r eate r t h a n 66
Hz
(
l eak age c
ur-
r e n ts
at
t
h ese lin e sett in gs m a y ex cee d
3 .5 mA) .
F igu r e 2-2 . L i n e V oltage Selection
2-9 . Interconnections
In acco rd a n ce wi t h in te rn at i o n a l sa f et y sta n -

Th e P o w e r M ete r and α p owe r se n so r ar e integr a l
dard s, t hi s in st rum e n t is e quipp e d wi t h α t hr ee-

pa
r ts o f t hi s m eas ur e m e n t s y ste m . B e f o r e m ea-
wir e p owe r ca bl e . Wh e n co nn ecte d to ana ppr o pri-

su r e m e n ts can b e p e rf o rm e d, t h ePo w e r M ete r and
ate ac p owe r r ece p tac l e, t his ca bl e g r o und s t h e

se n sor mu st b e co nn ecte d toget h e r wi t h t h epo w e r
in st rum e n t ca bin et . Th e t yp e o f p owe r ca bl e plu g

se n sorca bl e . (Th eca bl e is s upplie d wi t h t h e P owe r
shipp e d wi t h eac h in st rum e n t de p e nd s on t h e

Mete r .)
co un t ry o f d est in at i o n . R e fe r to Figure 2-3 f o r t h e
par t numb e
r
s o f t h e p o w e r ca bl e plu gs av a il a bl e .
Th
epo w e r se n so
r
ca bl e co upl es t h e dos upply and
W A
RN
I N
G

sa
mplin g
gate
driv
e
fr
o
m
t
h
e Po w e r M ete r to t h e
p owe r
se
n
so
r
and t
h
e 220
Hz
acou t pu t s
i g
na l fr o m
BEF
O
RE SW I TCHI NG
ON
THI
S IN-

t h e po w
e
r
se
n
so
r
to t
h
e P owe
r M
ete r .
ST RU ME
NT,
t h e pr otect iv e ea r t h te r -
min a l s of t hi s inst rum
e
n t mu st
be con-

CAU TIO N
n ecte d to t h e p r otect i ve co ndu cto r
of
t h
e
( M a in s) powe r cord . T h e M a in s p lu g

T
he m a ximum vo l tage w hic h m ay be
sh a ll only be in se r te d in α sock et ou t l et

safe ly
co
u p
l
e
d to
t
h e
P
owe
r
M ete
r
in p u
t
p r ovide d w i t h α p r otecti v e ea r t h co n -

f
r o m t h e p owe r se n so r is
18
m
V
rm s .
tact . Th e p r otecti v e
action mu
st n ot be
n egate d b y t h e use of an e x te n s i o n cord

2-10 "
Operating E nvironment
(powe r cab l e) w i t h o u t α p r otect iv e con-

Th e ope r at ing e nviro nm e n t s h o uld b e w i t hin t h e
du cto r (g r o unding) .

f o ll ow in g limitations :

HP 435B Specifications

General

Brand	HP
Model	435B
Category	Measuring Instruments
Language	English