Hobart 5359D - Protective Relay Tray

.
Loud cr,nklctcf
open: c&x ing pcW!r
de I ivory. Over-
frequsncy indicating
light (DS40) CN
T
1. Defective protective
monitor module (KI4)
. E lectric governor improper I;
adiL5ted, oh nutfunctioning
(1) Gavernor improperly
adi usted
(2) E lectr’ic governor
system malfunctioning
Defective over-under-
’ frequency sensing module
(K27)
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~.- -me--
13. UX J:ccztat (37, F& 1) tr> re-
duz vrol:ugz to IOr, V. I’!:e
unc!zrvoI!~qc indicutlng I ir;!,t
sh XI Id N 01’ come on during
a I-imr! de lay of 4. to 12 secc.nd< .
If the light comes on before a
delay of 4 to 12 seccnds, thy’
underltoltage relay is defect;l:e.
Replclce the module (K26) cz- the
protective relay tray.
C. With unit running nH:imIty, use
rheostat (37, Fig. 1) to reduce
voltage quickly to 90 V. If the
undervoltage indicating 1 i&t
(DS38) is turned ON immediateI>
the protective monifor circuitry
is defective. Replace the pro-
tective mpnitor (Kl4) or rep!cce
the potective relay trajr.
A. Proceed as foIlows:
’ (1) Adjust in accordance with
Sect. 2-3, Para. 4, E, (3).
(2)Check and adjust or repair
in act ordance with E NG IblE
AND CONTKOLS, Tro&!es
8 and 9.
3. If overfrequency nuisance trippi%
continues after the governor
system is proven to be good, and
an overfrequency condition does
not exist, replac,.
0 the over-under
frequency module (K27), or com-
plete protective relay tray.
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Trouble Shooting Chart (She&t 18 of 21)
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3-1
Page 32
Figure 9
Aug 25%
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