GE Industrial Solutions ZBTE Series - Manual (Page 7)

Zenith ZTE/ZBTE Series Operation & Maintenance Manual Page 5 91 R -1000
Initial Testing and Energization of the Switch
Manual Testing of Mechanism
A manual operator handle is provided with the transfer
switch for maintenance purposes only. Manual operation
of the switch must be checked before it is operated
electrically. All power sources must be disconnected
before manual operation of the switch is attempted.
Insert the handle and operate the transfer switch between
the Source 1 and Source 2 positions. The transfer switch
should operate smoothly without binding. After insuring
the switch mechanically transfers adequately, return
the switch to Source 1 position, remove the handle
and return it to the holder provided.
Before proceeding, refer to the information package
supplied with the ATS. Read and understand the
information on all accessories installed.
Figure 4
Transfer Switch Equipment Rating Nameplate (Typical)
AUTOMATIC TRANSFER SWITCH FOR
USE IN EMERGENCY SYSTEMS
Model Number: Z3003S1AA50XXXXXXX
Serial Number: 1598248-2
BOM Number: ZB1SD20031-05A600X
RATING
Volts: 480 Hz: 60
Amps: 2000 Phase:
0 3
LISTED
382H
E 23911
CAUTION
Due to hazardous voltages and currents, GE recommends
that a GE Certified technician or a qualified electrician
perform the installation and maintenance of the switch.
!
WARNING
All power sources must be disconnected
before manual operation of the switch.
!
Electrical Testing of the Switch
(Source 1 = utility, Source 2 = generator)
To verify the electrical system and proper automatic
operation of the switch, perform the following steps:
CHECKING SOURCE 1 (PREFERRED SOURCE)
1.
Check to make sure the switch is connected to
Source 1 position.
2. Turn the Disconnect Switch (DS) to INHIBIT. This
prevents the switch from transferring or sending a
start signal to the Source 2 generator unintentionally.
3. Verify that the switch rating is the same as the
system voltage from Source 1 supply power.
The equipment rating nameplate on the transfer
switch lists the voltage (see Figure 4).
4. Close the Source 1 input circuit breaker.
5. Confirm that the MX350 controller is sensing
Source 1 voltage. The S1 LED should be illuminated.
Electrical parameters (including phase rotation)
can be viewed on the MX350 Graphical Control
Panel on the \Value\Summary and \Diag\Phasor
screens. Verify that the system voltage is correct for
the rating of the switch.
CHECKING SOURCE 2 (NON-PREFERRED OR
ALTERNATE SOURCE)
6.
Close the Source 2 input circuit breaker.
7. Manually start Source 2 via controls on the generator
itself. Note that with the DS in INHIBIT position, the
generator cannot be started by the MX350 controller.
8. Confirm that the MX350 controller is sensing
Source 2 voltage. The S2 LED should be illuminated.
Electrical parameters (including phase rotation)
can be viewed on the Graphical Control Panel on
the \Value\Summary and \Diag\Phasor screens.
9. Verify that the phase rotation of Source 1 is the
same as the phase rotation of Source 2.
10. Manually shut down the generator via controls on
the generator itself.
CAUTION
Energizing a transfer switch with dissimilar
system voltage from that which the ATS
is rated may cause equipment damage.
!