Optional Accessories
6A
Test Switch, Maintained / Momentary
6AP
Test Switch, Maintained / Momentary, utilizing Keypad
A1
Auxiliary Contact, operates on Source 1 line failure.
A1E
Auxiliary Contact, operates on Source 2 line failure.
A3
Auxiliary Contacts: Closed when the transfer switch is in Source 2 position.
A4
Auxiliary Contacts: Closed when the transfer switch is in Source 1 position.
A62
Sequential Universal Motor Load Disconnect Circuit. Normally closed Auxiliary contacts for Motor Loads. Open
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.
M82
Digital Meter w/Display of Amps, Watts, Volts, Frequency, KVA, KVAR, PF, etc.
M83A
Digital Meter w/Diplay of Amps, Watts, Volts, Frequency, KVA, KVAR, PF, etc. Plus THD capability w/Modbus.
T3/W3
Elevator
UMD
Universal Motor Load Disconnect Circuit: Auxiliary Contact opens
VI
Voltage Imbalance (Three Phase)
For a three phase source, this feature monitors phase voltage ratios based on a selected range within a selected time window. Should any phase fall below the selected lower window limit or exceed the selected higher window limit within the selected time frame, the controller initiates transfer to the other source.
Range: 5% to 20% of Nominal voltage,
10 to 30 seconds window, user adjustable. Resolution: 1% Increments
Minimum Differential: 2% between “Fail” and “Restore” settings.
Factory default: 10% “Fail”, 8% “Restore, 30 Seconds. See CFG Menu page 17 to configure ON or OFF. See SET Menu page 18 to set Percentage and time windows
HT | ZNET |
Heater and Thermostat. | Network Communications Interface Card |
Manual |
|
Manual Transfer Switch transfers in either direction |
|
by depressing designated pushbuttons. |
|
M80 |
|
Digital Power Meter with Display: Amps, Volts, and |
|
Frequency. |
|
■ GE Zenith Controls | ZTG/ZTGD Operation and Maintenance Manual | 13 ■ |
