ABB Zenith ZT30 Operation And Maintenance Manual page 44

Section 6.1: Entelli-Switch 350 Controller
Inspection Prior to Initial Energization
DANGER
Hazardous Volatge Can Cause
Severe Injury Or Death
DANGER
Turn OFF all power before installation, adjustment or
WARNING
WARNING
WARNING
removal of transfer switch or any of its components.
WARNING
CAUTION
NOTICE
NOTICE
CAUTION
NOTICE
inhibit automatic transfer. Engine Gen-Set could
start when engine control wires are attached.
Prior to energizing the transfer switch, perform the following:
1. With a vacuum, remove any debris collected on the switch
during shipment or installation.
2. Check engine start connections. The engine-start terminals
are located on the Electrical Panel (Figures S2-11, item
I). The E contact provides the engine start signal from the
automatic transfer switch controller to the genset.
3. Verify the correct connection of all control wires.
4. Check settings of all timers and adjust as necessary.
5. Adjust any optional accessories as required.
6. Verify that all Source 1, Source 2 and Load cables are
correctly connected to the clearly marked terminals on
the unit.
7. Verify the number and sizes of required cable lugs.
8. Verify equipment ground cable(s) are installed per NEC
and/or local codes.
9. Verify that all cable lug connections are tightened in
accordance to the Fascia label.
10. Remove surface oxides from cables by cleaning with a
wire brush.
11. Make sure that all covers and barriers are installed and
properly fastened.
Zenith Automatic Transfer Switch | new.abb.com/low-voltage
Engine Start Control Connections
The engine-start terminals are located on the Electrical
Panel as indicated in Figure S6-9. These terminals can
be accessed for manual transfer switches, or in other
applications not requiring the microprocessor.
Figure S6-9 : Electrical Panel
contacts and the A4 – Source 1 auxiliary contacts are also
provided. These terminals are clearly marked and appear on
the left side of the Electrical Panel (item H in Figure S5-12).
Initial Testing and Energization
of the Switch Manual Testing
of Mechanism – MX350
A manual Charging Handle is provided with the transfer switch
and S5-6 for location of Charging Handle). Manual operation
of the switch may 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
operates the transfer switch between the Source 1 and Source
2 positions. 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.
Please refer to Sections 4 and 5 for Sequence of Operations
for Standalone ATS and Bypass Isolation ATS respectively.
Engine start Terminals
44