Mechanism To Rack Out The Switch - ABB Zenith ZBTS T Series Installation And Operating Instruction

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Zenith ZBTS T-series 100 – 600 A, I N S TA L L AT I O N A N D O P E R AT I N G I N S T R U C T I O N
—
Fig. 3.22 Racking out mechanism of ATS. Push the
button and rotate counterclockwise with Racking in/
out tool up to Isolation location, see also Fig. 3.29
The switch and HMI of ATS are now out of
power. The ATS is completely discon-
nected from the system load and control
power. It is now safe to open the door,
and remove the HMI cable from the ATS.
After that the ATS can be removed from
the cabinet. Lift ATS out of the track if
needed. The fixing screws must be unfas-
tened. See the lifting instructions in Part
2, Chapter 7 Installation.
After the isolation operation of ATS the
Bypass switch is feeding the system load
and it is highly recommended to set the
Bypass switch to Operation mode: AUTO,
if not set earlier in Step 2. If Bypass switch
is connected to Source 1 and if this source
fails, Bypass switch will automatically
start the generator. When source (Source
2) is available, Bypass switch will auto-
matically transfer to this source. This is
only available when the Bypass switch is
set to Operation mode: AUTO.
3.4.3 How to use the Racking out

mechanism to rack out the Switch

This guide applies to switches with a
Racking out mechanism. At the beginning
of this procedure, the switch is in the
CONNECTED location. See pictures Fig.
3.29 and Fig. 3.30.
1 Open the cover of the Racking in/out
mechanism.
2 Take the Racking in/out tool, which is
located default on the lower switch
Racking in/out mechanism.
1
3
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Fig. 3.23 Overview of the Racking out mechanism
NOTE! Before operations make sure that
Bypass switch is connected to the load, if
the ATS is to be taken for maintenance.
ATS switch must be in OFF position.
3 Push the Racking in/out mechanism
button.
NOTE! Functions of Racking in/out
mechanism button:
• You can control the ATS to OFF position
by pushing this button, if the Bypass
switch is in the CONNECTED location
and in the I or II position (supplies the
load).
4
2