ESD5500E Generator Speed Controller with Precise Speed Regulation and Fast Load Response

ESD5500E Electronic Speed Governor for Generator Overview The ESD5500E is a full electronic closed loop speed control designed for generator sets. It delivers fast, precise response to load changes, robust protection against electrical transients, and flexible adjustment options for a wide range of engines. The compact, rugged unit can be mounted in a control cabinet or on an enginemounted enclosure. Key benefits Stable generator speed under changing loads through closed loop control. Quick, accurate response to instantaneous changes for improved power quality. Protects the system from reverse battery voltage and transient pulse voltages. Simple installation with preadjustable settings to reduce setup time. immunity to electromagnetic interference common near engines. Main features Full electronic closed loop design for precise speed regulation. Compatible with a wide range of engines and generator applications. Fast and accurate transient response. Protection against reverse battery voltage and instantaneous pulse voltage. Preadjustable and externally adjustable speed and idle settings. Rugged construction suitable for cabinet or enginemounted enclosures. If exposed to water, mist, or condensation, mount vertically to allow drainage. Technical specifications Model: ESD5500E Speed range: 1 kHz to 7.5 kHz Thermostability: maximum plus 1 percent Idle adjustment: 160 Hz plus or minus 20 Hz to 95 percent of rated speed Droop adjustment: minimum position 15 Hz plus 6 Hz per ampere of load current change; maximum position 400 Hz plus 75 Hz per ampere of load current change External speed adjustment: plus or minus 200 Hz (external 1 kiloohm) Test temperature: 75 degrees Working humidity: maximum 95 percent Dimensions: 18 x 17.5 x 5 cm Weight: approximately 600 g / 21.2 oz Installation and use notes Designed for installation in control cabinets or enginemounted enclosures alongside other control equipment. When water, mist, or condensation may contact the unit, mount vertically so fluids drain away from the controller. Preadjustable settings allow quick commissioning; further tuning can be done via external adjustment. Package contents 1 Speed Controller ESD5500E Typical applications Standby and prime power generator sets requiring precise speed regulation. Industrial generator installations where fast response to load changes is needed. Rental power and site generators that must operate reliably in varied environments. The ESD5500E provides a practical, reliable governor solution for maintaining stable engine speed and protecting generator control systems in demanding applications.