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10 GE Zenith Controls
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ZTSCT / ZBTSCT Operation and Maintenance Manual (71R-5000A)
Accessory Definitions
6P
Test Switch, Momentary
6A
Test Switch, Maintained Auto/Momentary Test
6AP
Test Switch, Maintained/Momentary utilizing keypad
6B
Test Switch, Maintained - Auto / Momentary - Test,
Key Operated
6C
Test Switch, Maintained - Auto / Maintained - Test,
Key Operated
A1
Auxiliary Contact, operates on Source 1 line failure.
A1E
Auxiliary Contact, operates on Source 2 line failure.
A3
Auxiliary Contact: Closed in emergency (Source 2)
Additional Available (10 max.) and need to be specified.
A4
Auxiliary Contact: Closed in normal (Source 1)
Additional Available (10 max.) and need to be specified.
A62
Sequential Universal Motor Load Disconnect Circuit.
Normally closed auxiliary contacts for motor loads.
Open 0-60 seconds prior to transfer, after transfer,
or both in either direction then re-close in timed
sequence after transfer.
AB3
Auxiliary Contact: Closed in bypass emergency
(Source 2) (S.P.D.T.) (Standard up to 400 Amp)
Additional Available (10 max.) and need to be specified.
AB4
Auxiliary Contact: Closed in bypass normal (Source 1)
(S.P.D.T.) (Standard up to 400 Amp) Additional
Available (10 max.) and need to be specified.
B9
Battery charger connections.
Calibrate
While monitoring the actual Phase to Phase voltage lev-
els and Frequency with a calibrated test equipment, the
Phase to Phase voltage sensing and Frequency can be
adjusted accordingly. Calibration capabilities are available
for Frequency and AB, BC, CA Phase to Phase voltage for
both Sources. Adjust via SET menu (see page 18)
CDP
Clock Exerciser Load/ No Load: Allows the Generator
to start and run unloaded or to simulate a power
failure, start Generator and run under load.
Can be configured by end user for 1, 7, 14,
28, 365 day cycle. (See page 16)
CDT
Load or NO-Load. One event exerciser with adjustable
Engine exercise timer. Exercise duration can be set
between 5 and 60 minutes in 1 minute increments. Can
be configured to run every 1, 7, 14, or 28 days. Factory
Default is 20minutes. When exerciser is impending,
(*E*) appears in the upper right hand corner of LCD
screen. See page 14 for instructions. Configured via
CFG (see page 17). Set via SET menu (see page 18).
CTAP
Alarm Panel on transfer to Source 2 with Silence button.
DS
Disconnect Switch, Auto/Inhibit.
Inhibits transfer in either direction when in inhibit.
Allows automatic operation when in Auto.
(40-400 Amps optional, 600-4000 Amps standard)
DT (Delayed Transition Only)
Time Delay from Neutral Switch position to Source 1
position. Adjustable 0-10 minutes in 1 second incre-
ments. Standard setting is 5 seconds Adjust via SET
menu (see page 18)
DW (Delayed Transition Only)
Time Delay from Neutral Switch position to Source 2
position. Adjustable 0-10 minutes in 1 second incre-
ments. Standard setting is 5 seconds.Adjust via SET
menu (see page 18)
E
Engine Start Contact
EL/P
Event Log: Sequentially Numbered Log
of 16 events that track
date, time, reason and action taken
System Data: Total Life Transfers (N2P)
Days Powered Up
Total Transfers to S2
Total S1 Failures
Time S1 available in Hrs
Time S2 available in Hrs. (N1P)
F
Fan contact, operates when generator is running.
HT
Heater and Thermostat
K
Frequency Meter, Door mount.
K/P
Frequency Indication for S1 and S2
L
LNP Center-off position LCD-Indicator
Indicating LED lights:
L1 Indicates Switch in Source 2 position.
L2 Indicates Switch in Source 1 position.
L3 Indicates Source 1 available.
L4 Indicates Source 2 available.