Specifications
Copyright © 2008-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-68D February 2010
55
STS AC Input
AC voltage range
110/115/120 Vac:
208/220/230/240 Vac:
89 to 138 Vac. See Note.
176 to 276 Vac
Over voltage threshold
Adjustable by controller module:
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 Vac systems
Under voltage threshold
Adjustable by controller module:
176 to 198 Vac for 208 Vac systems
176 to 209 Vac for 220 Vac systems
185 to 218 Vac for 230 Vac systems
193 to 228 Vac for 240 Vac systems
89 to 105 Vac for 110 Vac systems
93 to 110 Vac for 115 Vac systems
100 to 114 Vac for 120 Vac systems
Redundant power supply
design
Startup power-on by priority source or alternative
Note:
The over/under voltage for each rate must be set by the controller. If the controller module
does not exist in the system, the STS module will adopt the widest range to set over/under
voltage in order to guarantee its performance.
The ranges are:
110/115/120 Vac
system:
89Vac (under voltage point) to
138Vac (over voltage point)
208/220/230/240 Vac
system:
176Vac (under voltage point) to
276Vac (over voltage point).
However, once the STS module is set by the controller, it will memorize the setting permanently
no matter if the controller module exists or not, unless the STS is set by controller again or the
AC source changes from 120V (110/115/120) to 240V (208/220/230/240) or from 240V
(208/220/230/240) to 120V (110/115/120).