GE Industrial Solutions MX350 Instruction manual - Manual (Page 88)

5–14 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
OPERATION SETPOINTS CHAPTER 5: SETPOINTS
Operation setpoints
Operation setpoints define the acceptable electrical and time limits for both Source 1 and
Source 2. These setpoints define dropout and restore values for over and undervoltage,
over and under frequency, as well as the associated time delays.
In addition, the screen for Source 2 (usually an engine generator set) has a setpoint for
Auto Loadshed Underfrequency. If this feature is enabled, a programmed output can be
used to shed part of the switch load via a downstream breaker. Also, if it is enabled the
user has to setup the variables for the corresponding parameters.
NOTE
NOTE: Additional customer wiring is required to use the Auto Load Shed feature.