Initial Energization; Control Connections - ABB Zenith ZTSCT Series Operation And Maintenance Manual

Installation
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.
4
1
E
5
2
(Engine Start)
6 3
Figure 2
Engine Start

Control Connections

The engine-start terminals are clearly identified by a
label on the microcontroller backplate. In the case of
manual transfer switches, or in other applications not
requiring the microprocessor, clearly marked terminal
blocks are provided in the upper left corner of the
control panel for the engine start control wires.
Figure 3 shows location of engine start connections
for Bypass Isolation Transfer Switch. Figure 6 (pg.5)
shows location of engine start connections for
Automatic Transfer Switch.
Terminals for field connections to the A3 Source 2 auxiliary
contacts and the A4 Source 1 auxiliary contacts are also
provided. These terminals are clearly marked and appear
on the side of the power panel. On 400 amp metal frame
units these terminals appear on the bracket above the
operator handle.
Figure 3 (Typical)
ABB Zenith
(cont'd)
DANGER
HAZARDOUS VOLTAGE
(Can Cause Severe Injury or Death)
P Relay
Contact rating is
10 Ampere at 120VAC
or 28VDC Gold plated
ZTSCT / ZBTSCT Operation & Maintenance Manual
Interconnect plug plate
Input/Output
option relays.
Control Power Supply
A4-1
A4-1
A4-2
A4-2
Auxiliary contact
A3-1 connections.
A3-1
A3-2
A3-2
A4B-1
E11
A4B-1
E12
Engine Start
A3B-1
Connections
E12A
A3B-1
E13

Initial Energization

Before proceeding, refer to the information package
supplied with the ATS and read and understand the
information on all accessories provided.
1. Unlock the enclosure.
2. Open the enclosure.
3. Verify the correct system voltage.
: The equipment rating nameplate on
NOTE
the transfer switch lists the voltage.
See Figure 4 .
4. Close Source 1 circuit. breaker.
: The controller will illuminate Source 1
NOTE
Available if proper voltage is sensed.
LED
5. Verify the phase to phase voltages at Source 1
line terminals.
6. Close Source 2 circuit breaker.
7. Start the generator's engine.
: The controller will illuminate Source 2
NOTE
Available when preset voltage
LED
and frequency levels are reached.
8. Verify the phase to phase voltages at Source 1
line terminals.
9. Verify that the phase rotation of Source 1
is the same as the phase rotation of
Source 2.
10. Shut down the generator's engine.
11. Place the starting control in the Automatic position.
12. Complete the visual inspection of the transfer switch.
13. Close the enclosure.
14. Lock the enclosure.
XBN
XBE
RNH
Interlock Logic
Assembly
ATR
Figure 3A –
Horizontal
Bypass/Isolation
Transfer Switch
Customer
Connections
3