I.
B.
33-790-11
Page
15
Section
5 -
Description
and
Explanation
of
Operation
5.0 GENERAL
The following paragraphs give a general description and
explanation of the operation of the breaker.
5.1
THE OPERATING MECHANISM AND HOW IT
WORKS
The operating mechanism
is
of the spring charged stored
energy type. This means that it consists of two major
parts:
(1)
The stored energy or spring-charging mechanism.
(2)
The mechanism for closing and opening the breaker.
The basic parts of these are combined into one
sub-assembly illustrated
in
Figures 10, 11, 12, and 13.
There are two varieties of mechanisms for the complete
line of
DS
and DSL breakers:
Power-Operated
Manually Operated
----~~~~~NJSM
Fig.
10
Front View
of
Mechanism (Manual Spring Charge
Except for DS-6321840)(383035)
Effective
October
1998
LEVERING
SHAFT
INTERLOCK
MOTOR
SHAFT
BEARING
TRIP
SHAFT
BEARING
EMERGENCY CHARGE
RETURN SPRING
Fig.
11
Front View
of
Mechanism (Power-Operated
Spring Charge )(385301)
OSCILLATOR-------,
1H\?
LATCH-----
Sf,\RING
MAIN
DRIVE
LINK
EMERGENCY
CHARGE
PAWL
TRIP SHAFT
MAIN
ROLLER
BEARING
Fig.
12
Rear
of
Power-Operated Mechanism (385303)
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
