Emergency Transfer Load Manager (EXL)

Overview

Caterpillar offers standard paralleling solutions, which are ideal for use in Distributed system configurations found in Data Center applications as well as Soft Load Automatic Transfer Switch (ATS) applications. The Emergency Transfer Load Manager (EXL) combines standard paralleling controls with an informative Graphical interface and a data access point for user’s Building Management System. The EXL controls can also be integrated into a switchgear lineup to provide a complete factory-tested solution. The EXL allows for operating generator sets in pre-configured Emergency Standby, Prime power and Parallel with Utility configurations for single generator/single Utility applications.

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Technical Summary
ConfigurationWall mounted paralleling control system that monitors and controls a single generator and a single utility.
Modes of OperationUtility Import, Export, and base load operations, Peak shaving, and Emergency Standby. Closed Transition to/from Generator Power
ApplicationLV and MV (208V-32kV)
Generator Protective Devices
ANSI Protective Devices15/25. 27/59, 81 O/U, 32, 40, 50, 51
Utility Protective Devices
ANSI Protective Devices15/25. 27/59, 81 O/U, 32, 40, 47, 51, 86
Environmental Parameters
CertificationsIBC, CBC, UBC, & OSHPD Certified
Control Panel EnclosureNEMA 1 or NEMA 3R Freestanding Construction
Operating Temperature0-50°C
Storage Temperature-20°C to +60°C
Low Voltage StandardsNEMA SG-5, CSA,ANSI C37.51, ANSI C37.20.1, UL1558 or UL 891, NFPA 110, NFPA 99 and NFPA 70
Medium Voltage StandardsNEMA SG-5, ANSI / IEEE C37.20.2, CSA-C22.2 No. 31-M89, EEMAC G8-3.2, NFPA 70, NFPA 99 and NFPA 1110
Instant Auto Selector Switch
Allows user to return sysem to automatic in the event of a touchscreen failure
Spare inputs and outputs
3 digital inputs and 6 relay outputs programmable from the HMI
Product Features
  • Automatic Synchronizing and Paralleling Controls
  • Automatic operation Emergency Standby applications
  • Communications with the on package genset controller which affords viewing of detailed engine and generator parameters on the LCD display
  • Accommodates interface to a user Building Management System via ModBus RS-485
  • User configurable engine exercise mode
  • Password Security System to ensure system security
Specifications
Technical Summary
ConfigurationWall mounted paralleling control system that monitors and controls a single generator and a single utility.
Modes of OperationUtility Import, Export, and base load operations, Peak shaving, and Emergency Standby. Closed Transition to/from Generator Power
ApplicationLV and MV (208V-32kV)
Generator Protective Devices
ANSI Protective Devices15/25. 27/59, 81 O/U, 32, 40, 50, 51
Utility Protective Devices
ANSI Protective Devices15/25. 27/59, 81 O/U, 32, 40, 47, 51, 86
Environmental Parameters
CertificationsIBC, CBC, UBC, & OSHPD Certified
Control Panel EnclosureNEMA 1 or NEMA 3R Freestanding Construction
Operating Temperature0-50°C
Storage Temperature-20°C to +60°C
Low Voltage StandardsNEMA SG-5, CSA,ANSI C37.51, ANSI C37.20.1, UL1558 or UL 891, NFPA 110, NFPA 99 and NFPA 70
Medium Voltage StandardsNEMA SG-5, ANSI / IEEE C37.20.2, CSA-C22.2 No. 31-M89, EEMAC G8-3.2, NFPA 70, NFPA 99 and NFPA 1110
Equipment
Instant Auto Selector Switch
Allows user to return sysem to automatic in the event of a touchscreen failure
Spare inputs and outputs
3 digital inputs and 6 relay outputs programmable from the HMI
Benefits & Features
Product Features
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