New | Cat XLM Switchgear

Caterpillar offers standard Switchgear products, which can support a wide variety of applications, or provide a custom designed system to meet your specific project needs. 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.Caterpillar Standard Switchgear products provide a solution able to combine all elements of monitoring and control for Caterpillar generator sets in a single-source package. Caterpillar also designs and manufacturers custom switchgear to meet specific customer requirements and functionality.

Technical Summary
ConfigurationTraditional customizable PLC based floor standing switchgear capable of controlling and monitoring multiple utilities, generators, and loads
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

Choice of 19” Surface Acoustic Wave Color or 15” Resistive Color Touchscreen
User selected Multi-function Relay (utility grade)
Circuit Breaker Control Switch withindicators
Audible Alarm & Horn Silence Button
Emergency Stop Button for eachgenerator
Instant Auto Switch to Return System to Ready State
Generator Demand Priority Control
  • Automatically match the on-line generator capacity to the loads, and avoid unnecessary operation of generator sets.



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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.
Mark Cripe
Helix Electric

San Diego - Power
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