Cummins Generator Technologies manufactures Excitation Loss Module. Cummins Generator Technologies offers wide range of accessories that include Current sensing kit, Diode Failure Detector, RFI Suppressor Kit, Manual Voltage regulator. This module detects loss of excitation, which is not easily detectable by other means when generators are running in parallel. Excitation Loss Module is available with unit switches and single pole change over contact can be incorporated into an external protection system.