RRS-2 Technical Manual 17
© 2010 CBS ArcSafe
®
2012-04-18
3.6.2 Automatic Current Control Configuration
1.
Ensure that the RRS-2 has been properly set up for operation.
2.
Set the current control module. To set the current control module for the circuit breaker
type being removed/installed, perform the following steps:
a.
With the main power switch ON, press and hold the install/remove trip point
pushbutton while pressing the UP or DOWN current trip pushbuttons to the desired
value.
b.
The LED display will indicate the reading being set and also display current draw while
the RRS-2 is in operation.
c.
The factory default setting is 0.0 amps.
d.
The required current setting is determined by a number of factors including breaker
type, size, environment, and physical condition.
e.
The best method in determining a suitable current limit setting is operational
experience or by predetermining the current limit by operating the RRS in manual
operation the first time a breaker is installed and removed via the remote rack. See the
previous section for information.
f.
By pushing the Down/Max Current button before running the RRS-2 the internal
memory of the current control module will retain the largest current values reached
during operation. To reset turn the Max Current function off by pressing the button
once more and then turning the Max Current function back on.
g.
Run the RRS-2
3.
Uncoil the pendant retractile cord and exit the arc flash boundary to a safe distance from the
circuit breaker.
4.
Press and release the install pushbutton on the pendant station, the remote racking unit will
continue the racking operation until the current draw on the system reaches the current set
point. The remote racking can be stopped at any time using the red emergency stop
pushbutton on the pendant station; the racking can also be stopped by pressing the opposite
remove (install) pushbutton on the pendant station of RRS-2 remote racking systems.
5.
If the current control module is set to an accurate level for the switchgear being operated,
the racking operation will stop when the switchgear reaches the DISCONNECT or
CONNECTED position and depending on how the breaker racks the RRS-2 may also stop at
the TEST position automatically.
6.
When the circuit breaker racking operation is complete, the RRS-2 can be detached from the
circuit breaker and stowed.
