Westinghouse De-ion DB-15, Instructions Manual

Page: 36 / 43

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AUXILIARY SWITCH
The auxiliary switch mounts on top of the plat­
form to the left of the operating mechanism. (See
Figs. 15 and 15A). The contacts will carry 15
am­
peres continuously or 250 amperes for 3 seconds.
The switch is a shaft-operated, 4-pole, rotary type
having two "a" contacts (closed when the breaker
FIG. 16.
Alarm Switch Attachment-Location
RESET PLATE
Table No. 4. INTERRUPTING CAPACITY
INTERRUPTING CAPACITY IN AMPERES
VOLTS
Non-Inductive Circuli lnducUve Circuit
1 25
V, D-C 1 1 6.25
250
V,
D-C
2 1 .75
1 1 5
V,
A-C 75 1 5
450
V, A-C 25 5
is closed) and two "b" contacts (closed when the
breaker is open). The rotor operates through a
60-degree angle and is non-adjustable, however,
the oontacts may be changed from "a" to "b" or
vice versa. To change, remove the switch from the
platform, remove the back cover, shaft and end
bushing. Remove the rotor and change the contacts
as desired. Be sure to replace the shaft in the orig­
inal position relative to one of the unchanged con­
tacts.
Inspection. Remove the front cover and make
sure the contacts are touching well before the end
of travel.
Maintenance. Check for loose bolts. Replace
contacts if necessary.
ALARM SWITCH ATTACHMENT
The alarm switch mounts above the shunt trip
attachment (see Figs. 16 and 16A) and will energize
the alarm circuit on all opening operations except­
ing those initiated through the breaker trip button or
shunt trin. The alarm switch may be reset manually
SWITCH GUARD
FIG. 1 6A.
Alarm
Switch Attachment-Construction Details
30
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