inform InfoSTS, Manual

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36
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EVENTS DESCRIPTION
Event Criteria
If both preferred and alternate sources fails at the same time
Transfer inhibit criteria
If 2 input sources are not synchronous to each other
And non synchron transfer is disabled by the user
Overload inhibit
If one of the 3 phase currents is higher than a software preset value And
overload inhibit is enabled by the user
Retransfer criteria
If synchron immediately transfer
If the 2 input sources are not synchronous to each other ,according to
selected retransfer mode by the user
Manual transfer mode
If synchron immediately transfer
If not synchronous according to selected manual transfer mode by the user
Emergency stop If external emergency stop signal is applied
Maintenance bypass If maintenance bypass switch is on S1 or S2 position
INDICATORS AND CONTROLS
2 lines 16 character LCD
alphanumeric display 1.line for parameters
2.line for alarms
Microprocessor 32 mips, very fast
Control buttons 5 push buttons interactive with LCD panel
Manual transfer to S1 From panel or RS232
Manual transfer to S2 From panel or RS232
Cancel manual transfer From panel or RS232
Transfer test From panel os RS232
Manual inhibit reset From panel or RS232
Sound on/off From panel or RS232
Dry contact relay test From panel or RS232
Lamp test From panel
Sound test From panel
Logon by password From panel or RS232
Alarm logs 128 recorded alarm logs from panel or RS232
Status indication leds 7 led lamps arranged in a mimic diagram
Manual transfer switch Available
Mechanical bypass Available for each input
Source input switch Available for each input (MCCB type trip type)
External EPO input Available
MEASURED PARAMETERS
All measured parameters can be monitored from front panel or RS232
Source 1 voltages 230 220 215 V
Source 2 voltages 210 219 218 V
Output load percentage 015 020 040 %
Output current 020 030 045 A
STS cabinet temperature 024 deg.
Source1 input frequency 50.0 Hz
Source2 input frequency 50.1 Hz
Phase angle
005 deg. (The phase difference between 2 sources in terms of angular
degrees)
DC Power supply voltages 15.8 16.0 V (PS1 and PS2)