System information

GRAVITAS SABRE SERIES
INSTALLATION &OPERATING MANUAL
Manual No. SABRE-4 Page 9 11/27/07 sabre-man
1
1
.
.
2
2
S
S
T
T
S
S
M
M
o
o
d
d
u
u
l
l
e
e
S
S
p
p
e
e
c
c
i
i
f
f
i
i
c
c
a
a
t
t
i
i
o
o
n
n
1.2.1 Electrical features
1.2.1.1 Input
Item Specification
AC voltage range 110/115/120 VAC: from89 to 138 VAC
208/220/230/240 VAC: 176 to 276 VAC
Over voltage threshold Adjustable using controller:
220 to 240 VAC for 208 VAC systems
233 to 252 VAC for 220 VAC systems
244 to 264 VAC for 230 VAC systems
254 to 276 VAC for 240 VAC systems
117 to127 VAC for 110 VAC systems
122 to 132 VAC for 115 VAC systems
127 to 138 VAC for 120 ac systems
Under voltage threshold Adjustable using controller:
176 to 198VAC for 208 VAC systems
176 to 209VAC for 220 VAC systems
185 to 218VAC for 230 VAC systems
193 to 228VAC for 240 VAC systems
89 to 105VAC for 110 VAC systems
93 to 110VAC for 115 VAC systems
100 to 114VAC for 120 VAC systems
Redundant power supply design Startup power-on by priority source or alternative
Note: The over/under voltage settings are managed by the controller. If there is no controller installed, the STS module will adopt
the widest range to set over/under voltage in order to guarantee its performance. For 110/115/120 VAC systems, the range is from
89VAC
 (under voltage point) to 138VAC(over voltage point); for 208/220/230/240 VAC systems, the range is from 176VAC(under
voltage point) to 276VAC(over voltage point). However, once the STS module is set by the controller, it will retain the setting
permanently so a controller can be installed to alter these settings and then removed if not required.
1.2.1.2 Output
Item Specification Remarks
Waveform Sinusoidal
Nominal output voltage Same as mains AC or the output of inverter modules
Permissible frequency area Max. ±2.5% (Synchronize area of Inverter) ±1.5Hz for 60Hz Inverter
±1.25Hz for 50Hz Inverter
Transfer time Typical 1/4cycle
Rated current 50A All voltage settings
Operation methods Inverter priority or Utilitypriority Programmable