RCA VoltOhmyst WV-77C, Технические характеристики, Управление, Применение, Техническое обслуживание

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L
Safety Precautions
Th e me tal c a se o f thi s i n str um en t i s con n ec t e d t o
t h e g ro und of t he int e rn a l circu it. Fo r
p r oper
ope r a -
t io n, t h e ground cab l e o f t h e WV - 77 C shoul d a l way s be
conne c t e d t o t he g r o u nd of t he e q uipmen t u ncl e r t es t.
T h e WG -2 99 B D C / AC-O h m s Pr ob e a n d Cab l e ha s a
s h i e ld th roughout i ts l e n gt h w hi c h i s con n ecte d t o the
i nst r umen t g ro und an d c ase . A l wa y s h andle t he WG·
2 9 98 by
th e insulated p robe housi n g.
A n impo rt a nt point to r e membe r is that th e r e i s
alwa y s danger inh ere n t in test ing elec t rical equip m e n t
w hich ope r at e s at hazardou s v o lt a g e s . T her ef or e, t h e
opera t or s hould th o rough l y f a mi l iar ize him s e lf w i t h
t he e quipm e nt und e r t e st bef o re w o rkin g on it , bearing
i n mind t ha t hi g h voltag e s m ay app e a r a t un e xpec t ed
p oint s in d efecti v e e quipment . Additional p reca utio ns
whic h ex pe rie nc e i n the i ndus t r y ha s sho w n to b e
impor ta n t a re li s t e d b e low .
l. It is good prac ti ce to re move po wer be fo r e can·
nect i ng t e st l ead s to high. vo lt a ge point s .
If
this is
i m practic a l , b e es p ec i a ll y caref u l to av o id a cc id en t a l
co n ta ct with e q u ipm en t racks and other o bj e cts w h ic h
c an pr ov i de a gro und . Working wit h o ne hand in y ou r
pock et a n d s tan di n g o n a pro pe rl y i n sulat ed fl o or les-
se n s t he d ang e r of s hoc k.
2 . Fi lt e r capa cit o r s m a y s t o r e a charge larg e
e n o u g h t o be ha za rd ou s . T he refore, disch a rge filt er
capaci t o rs b e fo r e atta chin g t e s t le a d s .
3. Rem em be r t ha t le a d s wi th b ro ken ins u la t ion
pr ovide t h e ad d i tional haza r d o f h i g h vo ltage s appe ar·
ing at expose d poin t s al o n g th e l ea ds . C heck t est lead s
for f rayed or b r ok e n i n sul a ti o n befo r e w o rking wit h
t h e m .
4 . To less e n the dan ger of ac ci d e ntal sho c k , di s con-
nect te st lea d s immedi ate l y a fte r te st is compl ete d .
5. Re me mb er t ha t th e ris k of se ve re shock i s onl y
o ne o f the po s s ib le hazard s. E ve n a mino r sho c k c an
pl a c e t h e opera tor i n haz ard o f mo re s e r io us r i sk s s u c h
a s a bad f a ll o r co nt ac t wi th a sour ce of high , er v oltage.
6. T he exp e ri ence d op e ra to r cont i nuous ly g uard s
a ga in s t inju ry and do e s n o t w or k on h . ~ za rdous circuit s
u nle s s a n ot h e r p e r so n
is
a v a ila bk to \ a ss i st in c ase of
a ccident . ...... --...
ACCESSORIES
Supp li ed with WV · 77C ' " "'
..-./
-:::;... ~
--' -1. '! '
D ~ / AC - Oh~s P robe.and Ca b le .. ~
r .
Type W G- 299B
1 Shp - On . .l hgator Clip . . Stock N o . 2 10088
I 1.5 - Volt B a tt e ry . . . . . . . . . . . . . . .. . Type VS036
I R CA-I2AU7 Tu b e I R eg i stration C a rd
I R CA · I 2AL 5 T u be Clip In s ulator I I nst ru ction B o o k l e t
Avail a ble on Separate 9rder
Fo r M e asuring AC Vo lt ages at F re q uenc ie s f ro m 50 Kc t 0 250 Me :
Crystal- D iode P ro be T y p e WC . 3 0 I A
F o r Incr e a s ing D C V oltage Range t o 50,000 V o lt s :
H igh - V olt a g e P ro be . . . . Type W G -289
N Iultip l i er R e s is t o r . . . Typ e WG ·206
..
C abl e s and p robe su p plie d w ith WV · 77 C
D e vi c e s or arrangem ~ n t . ~ho""n o r tl e ~c rib ed h e r ein may ""C pa t enl~ of RCA o r I)ther ~ . Inf o r m a t io n c o[]ta il] ~ d
her~ i n
i.
fu rni !h e d w i thon' r e s pon s i b i l i t y b y RCA f or i t ~ u s e lin t.! with o ut pr e jutlic e to RCA' & pa t ent r;~ " I ~ .
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19 56 b y Rgd io C o rp o r g l i on o f Am e ri cg
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T M K
®,
Mgrcg Re g i . lr o d g
TES T A ND MEA SU RING E Q U IPMEN T
RA D IO C O R POHATION O F A ME RI C A, HARBI S O N, NEW J£H.SEY
,
I nst'- W V -7 7C
(l)
10 - 5 6
P r inted in U . S.A .