New | Cat XLM Switchgear

The Emergency Transfer and Load management (XLM) product supports transfer between the utility source and generator bus and allows for sustained parallel operation with the utility for load management applications.

Technical Summary
ConfigurationConfigurable PLC based switchgear capable of controlling and monitoring multiple generator sets, tie, utility and load breakers for utility paralleling applications
Modes of OperationEmergency Standby, Utility Import/Export, Peak shaving, and base load operations with redundant controls and components. Closed transition to/from generator power
ApplicationLV and MV ( 208V - 38 kV
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, 50, 51, 86
Environmental Parameters
CertificationsIBS, CBC, UBC & OSHPD Certified
Control Panel EnclosureNEMA 1 or NEMA 3R, Freestanding Construction
Operating Temperature0 degrees to 50 degrees C
Storage Temperature-20 degrees C to +60 degrees C
Low Voltage StandardsNEMA SG-5, CSA, ANSI C37.51, ANSI C37.20.1, UL 1558 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

  • high Speed Supervisory Network
  • automatic Start/Stop
  • automatic “dead Bus” Coordination
  • automatic Power Factor Control When In Parallel With Utility Power
  • programmable Load Shed / Load Add Functions
  • networked Engine Communications
  • generator & Utility Protection
  • engine Tuning
  • mode Selection
  • selectable Auto/ Manual Control
  • password Protection For Protective Settings And Setup
  • load/No Load Test
  • touch Screen (hmi) Display
  • nfpa 99/110 Compliant Alarm
  • annunciation With Audible Horn
  • engine Control Mimic Screen With Gauges For Rpm, Dc Battery Voltage, Oil Pressure, Engine Coolant Temperature, Engine Hours, Number Of Starts

Standard Equipment

Generator Demand Priority Control
  • Automatically match the on-line generator capacity to the loads, and avoid unnecessary operation of generator sets.

Optional Equipment

Data Table Interface
  • Accommodates interface with a building management system for monitoring all system parameters via Modbus RTU or TCP
Supplemental Hardware Synchronization check relay (ANSI 25 Device)
  • Provides additional discrete synchronization protection
Remote Power Monitoring System
  • To monitor breaker status, alarms, metering and other operating parameters



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With only a few days notice, we were able to get the emergency system working properly. Hawthorne Cat provided great leadership and excellent field support.
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Helix Electric

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