Table of Contents
Advertisement
OM 2012
(26)
Check accuracy of voltmeter.
(a}
Open
generator
control
trcy
(14,
Fig.
2).
(b)
Connect
a master voitmcter
of known accuracy to terminais
of the voltm:tzr
(2).
i(d)
Compare unit voltmeter
recding with
master meter.
Error must not exceed
2% of FuII scale.
(29)
Check accuracy of AC ammeter.
(a)
Connect
a muster ammeter of knotin
accuracy
to the AC amme>er (4)
tenina!s.
l
(b)
ibmpare
unit ammeter reading with
master meter under varioti;
toads.
Error
must
not
exceed 4% of full
scale.
.
.
(30)
Check operation
of meter selector
switch
(5).
A voltage
value should be shunin '
'in each switch
positiqn.
131)
Ch ec
o era ion of the line switch
(6).
A normal voltage
of I15
V AC shou!d be
k
p.
t
indicated
when the switch
is in LINE-TO-NEUTRAL
position.
A voltage
of
-approximately
200 V AC sftould be indicated
when the switch
is placed
in LINE-
TO-LINE
position.
(32)
.Check accuracy of frequency
meter.
(a)
Connect
a master frequency
meter of known accuracy to the frequency
meter (1) terminals.
(b)
Compare meter readings.
Error must not exceed
1% of ful i scale.
(33)
Operate
the unit not less than 10 minutes
under full
load (260 A).
The over-
load device
(Ref.
l-1;
7,
Fig.
13) MUST
NOT
trip.
2-3
Page 12
Aug 25 /*
Hide quick links:
Advertisement
Table of Contents
