ABB Zenith ZTG 30 Operation, Maintenance And Installation Manual page 20

20
Z e n i t h Z T G S e r i e s AT S , O P E R AT I O N , M A I N T E N A N C E , A N D I N S TA L L AT I O N G U I D E
Feature comparison
Pre-transfer delay S1 to S2, sec
Post-transfer delay S1 to S2 , sec
Pre-transfer delay S2 to S1, sec
Post-transfer delay S2 to S1, sec
Load shed delay, sec
Source failure detections
No voltage
Undervoltage
Overvoltage
Phase missing
Voltage unbalance
Invalid frequency
Incorrect phase sequence
Features
Controls
LED indications for ATS, S1 and S2 status
Open transition - Standard digital inputs/outputs
Delayed transition - Standard digital inputs/
outputs
Programmable digital inputs/outputs
Auto config (voltage, frequency, phase system)
Source priority
Manual re-transfer
In-phase monitor
Genset exercising: on-load, off-load
In-built power meter module
Load shedding
Real time clock
Event log
ZTG(D) controls (LCD)
S1 O S2 S1 S2
l ll ! l ll !
LOAD AUTO LOAD AUTO
Auto Auto
Esc Esc
Alarm reset Alarm reset
l O ll l ll
ON OFF ON ON ON
0...60
0...60
0...60
0...60
0...60
Yes
Yes
Yes
Yes
Yes
Yes
Yes
LCD + keys
Yes
1 / 1
1 / 2
Yes
Yes
SOURCE 1/2, No priority
Yes
Yes
Yes
No
Yes
Yes
Yes