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Zenith ZBTS T-series 100-1200A, I N S TA LL ATI O N A N D O PER ATI N G I N S TR U C TI O N
1
l
ON
ll
ON
O
OFF
—
Fig. 3.18 HMI of Bypass switch, If the power supply of
ATS is Source 1, the new Bypass switch position will
be the the same as ATS by pressing "I ON" button
If the power supply of ATS is Source 2 (the
green LED lights up at S2 in HMI of ATS)
You can operate the Bypass switch to the
same power supply S2 by pressing the
green "II ON" button (right side) on the
HMI of the Bypass switch.
Both switches are connected to the same
power source for a while. The ATS switch
automatically exits the operation mode:
Auto, when the Bypass switch is con-
trolled to operate the load from Source 1
(or source 2). Only one switch can be in
operation mode: Auto at a same time.
3.4.1.2 Step 2: Operate ATS to OFF-
Position
Push the red button "O OFF" on the HMI
of ATS, see Fig. 3.19. The contacts of ATS
are now open, but the plug connectors on
racking out system are still attached to
the busbar.
It is now possible to set the Bypass switch
to Operation mode: Auto ( –> Main Menu
–> Operation –> Operation mode –>
AUTO), see paragraph 3.3.1.3 Main Menu.
Bypass switch works like a normal auto-
matic transfer switch and now supplies
the system load.
Warning
ATS and Bypass switch "OFF" Position keys
are always enabled. Be sure to read the in-
structions carefully to ensure operation of the
intended device. Failure to do so may result in
an unintended disconnection of the load.
l
ON
ll
ON
O
OFF
—
Fig. 3.19 HMI of ATS, to open the main contacts of ATS,
push the red "O OFF" button
3.4.1.3 Step 3: Operate ATS to TEST
Location with the Racking in/out Tool
Push the button of the ATS Racking out
mechanism and rotate counterclockwise
with Racking in/out tool until button re-
turns. See the detailed instructions in
paragraph 3.4.2 "How to use the draw-out
mechanism to rack out the switch".
—
Fig. 3.20 Racking out mechanism of ATS, Push the
button and rotate counterclockwise with Racking in/
out tool up to Test location, see also the Fig. 3.28
Summary of Contents for Zenith ZBTS T Series
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