Alstom FKG1X - Page 143

Installation
Measuring main circuit resistance
G31
-
-4
01EN02
6/10
02--2011
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ion contained in
this document is indicative only. No
representati
on or
warrant
y is
given or should
be
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
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is subject to
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en authority, is
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 GRID
Measuring main resistance
procedure of generato
r circuit
-
-
breaker
Position of
mater
ial
put in posi
tion ”LOCA
L” (manu
al ope
rating mec
hanism
), the oper
ating me
-
chanism,
-
-
circuit-b
reaker and disconnec
tor closed,
-
-
earthing switch
(es) or starting
discon
nector (if applicable) opene
d.
Process
D
Establish a direct current at least 100 A between the input and output of
the apparatus to be tested.
D
Connect the measuring equipment on the holes allowed.
D
Measurement (
R2
) of voltage decrease between these two points gives
the resistance value at the rate of 100
m
V for 1
m
Ω
.
100 A
100 A
R2
Hole
Ø
4
R2
Hole
Ø
4
Reminder
The
resi
stan
ce
on
eac
h
app
ara
tus
mus
t
be
less
than
the
valu
e
giv
en
in
“ACCEPTANCE CRITERIA”.
Refer to the document “ACCEPTANCE CRITERIA”, see summary for refer-
ence.