I.B. 8295A61H03
Page 34
Effective 7/97
The functions they are intended to perform are as fol-
lows:
1. The breaker is held mechanically trip free during rack-
ing. The latch check switch is also held open, thus pre-
venting any electrical close signal from closing the
breaker.
2. The breaker is permitted to be withdrawn in the safe
mode (breaker open/springs discharged) when bring-
ing the breaker to the Withdrawn position or to the
Connected position.
The two outlined functions are accomplished by pushing
up the tripper rollers.
When required, the customer is responsible for provid-
ing the proper interfaces with the Series 29 opening/
closing floor trippers. Refer to the Series 29 outline
drawing (Figure 1-3) for specific details as to exact loca-
tions and the amount of travel associated with each trip-
per.
MOC Operator
The MOC (Mechanism Operated Control) switch opera-
tor is coupled to the pole shaft. As a breaker closes, the
operator moves to change the MOC switch contact posi-
tion. MOC switch contacts operate in the same manner
as the auxiliary switch contacts in the breaker. The
MOC switch operator is located on the bottom of the
Series 29 breaker element (Figure 6-8).
When an MOC switch is required, it is the customer’s
responsibility to provide the proper interface with the
Series 29 MOC operator. Refer to the Series 29 outline
drawing (Figure 1-3) for specific details as to the opera-
tor’s location and amount of travel.
Figure 6-8 Series 29 Showing Bottom Accessed
Interlocks and MOC Operator
Figure 6-7 Series 29 Primary Connection
Summary of Contents for 150 VCP-WR 1500
Page 2: ......
