Static Transfer Switch
STS207
User Manual
Page 23 (28)
ELTEK VALERE DEUTSCHLAND ©2009 UM_STS207_WEB_E_R1.4
8. Technical specifications
Type designation see section 3
Article code see section 3
AC input:
Nominal input voltage source 1 230V
AC ±20%
Nominal input voltage source 2 230VAC ±20%
Input frequency 50 Hz/ 60Hz, programmable
Synchronization range ±2Hz
Efficiency ≥ 99%
Mains input fuse 32A semiconductor protection
External mains fuse recommended: 32A gL or MCB characteristic B
DC Voltage input:
Redundant circuitry supply see section 3
AC Output:
Nominal output voltage 230VAC, voltage range acc. to input values, switch over threshold
±5 to ±20% programmable
Nominal output current 30.4A
AC
Nominal switching capacity 7kVA
Overload capability 1000% for 10 ms (fuse tripping of 32A is guaranteed)
Output frequency acc. to the input frequency
Transfer time ≤4ms
Other specifications:
Monitoring functions voltage/frequency of sources Mains and INV; synchronization
mains- inverter; over temperature; CAN communication lost;
synchronization bus interrupted
LED signalling Operation (green), source Mains OK (green), source INV OK (green),
load on inverter (green), load on mains (green), synchronization
(green), collective failure (red)
Configuration with front side operation keys UP/DOWN/ENTER/ESC
and LCD (4 x 16 characters) or via Ethernet (internal WEB server)
Fault signalization text message on LCD, in addition 1 programmable isolated
collective failure (alarm) relay output; Email or SNMP (Trap)
notification
Rated contact load of the alarm relay Max. switching power 62.5VA; 30W
Max. switching voltage 125V
AC; 60VDC
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