Eaton Cutler-Hammer DSII Series - 2-5 Levering Circuit Breaker

I. B. 694C694-02
2-5 LEVERING CIRCUIT BREAKER
A WARNING
EXCESSIVE LEVERING TORQUE CAN DAMAGE
THE BREAKER, THE SWITCHGEAR AND CAUSE
SEVERE PERSONAL INJURY. DO
NOT APPLY
TORQUE IN EXCESS OF 25 FOOT-POUNDS.
The breaker drawout element has four normal positions
in its compartment as determined by the levering
device:
• REMOVE Position (Figure 2-4)
• DISCONNECT Position
• TEST Position
• CONNECT Position
The REMOVE position is the first position
in the compart-
ment as the breaker element is pushed directly by hand
as far as it will go. The DISCONNECT, TEST and CON-
NECT positions are reached only by means of the lever-
ing device. The levering device is hand operated with a
removable crank handle. The handle is placed on the
levering device worm shaft, which is exposed by pushing
Figure 2-3 OSI/ Breaker with One Arc Chute Removed
Effective 07 /97
Page 7
and holding the Push-To-Trip button on the front of the
breaker and depressing the shutter (Figure 3-3).
With the breaker sitting on the extension rails, make cer-
tain that the breaker levering mechanism arms are
in
the REMOVE position (Figure 2-4). If they are not, turn
the levering crank
in the direction required to get the lev-
ering arms in the REMOVE position. Carefully push the
circuit breaker into the breaker compartment until it
physically stops. Begin turning the levering crank in a
clockwise direction. Initially, it helps to push a bit on the
front of the breaker while turning the levering crank to
get the mechanism engaged and started. A continued
clockwise rotation of the levering crank will move the
breaker to the DISCONNECT, TEST and the CON-
NECT positions. When the CONNECT position is
reached, the crank suddenly becomes hard to turn. At
this point, stop turning the crank. Note that as the break-
er is cranked and the different positions are reached, a
position indication is given in the position indicator win-
dow on the front of the breaker (Figure 3-3).
Rotation of the levering crank counterclockwise will turn
the levering device arms so as to withdraw the breaker
from the compartment. The procedure is basically the
same as just described except
in the opposite direction.
Figure 2-4 DSll Levering Device Arm Shown in
REMOVE Position
Courtesy of NationalSwitchgear.com