Close And Trip Functions - Siemens SIERS 2.0 Instruction Manual

Figure 15: Racking Mechanism for
HMI Setup
Figure 16 : LS5 Switch for GM-SG
NonAR Compartment Door Shown
Smart Stepper
Motor
LS4 – Manual
Racking
Permissive
Switch
Figure 17: LS5 door Switch for GM-SG-AR Compartment
Interlock and operation of auxiliary truck
In order to rack a CPT rollout truck or a CPT fuse
rollout truck, it is necessary to open the secondary
molded case circuit breaker and block its closure
using the kirk key interlock. Refer to the applicable
GM-SG or GM-SG-AR switchgear instruction manual
for detailed instructions.

2.5 Close and Trip Functions

Circuit breaker remote control functions
Each circuit breaker compartment is equipped with
a close and a trip auxiliary relay. These relays are
LS5 Door Switch
wired into the circuit breaker close and trip control
Shown Mounted
circuits. The physical location of these auxiliary
on Door Frame
relays is in the racking device, behind the stepper
motor. These relays provide inputs to the logic CPU
and the HMI on the status (open/close) of the circuit
breaker, as well as receives commands form HMI
and the CPU to close or trip through contacts wired
in the close and trip control circuit. See Figure 18 for
the locating of the close and trip auxiliary relays.
SIERS 2.0 Siemens Integrated Electrical Racking System Instruction Manual
LS5 Door Switch
Shown Under
Protective Cover
17