Description
The Selco T4800 (Part Number T4800.0010) is a precision Load Sharer designed to ensure stable power distribution in islanded or grid-parallel power generation systems. It is primarily used in maritime and industrial power management systems to equalize the active load (kW) between multiple AC generators operating in parallel. By continuously monitoring the current and power factor of each generator, the T4800 adjusts the governor of the prime mover to maintain a balanced load distribution, preventing any single generator from being overloaded or forced into a reverse-power condition.
Key Technical Specifications
| Parameter | Value/Description |
| Model Number | T4800.0010 |
| Function | Active Power (kW) Load Sharing |
| System Compatibility | Parallel-operating AC Generators |
| Inputs | Generator voltage (U), current (I) |
| Output | Control signal to Engine Governor (\pm or 4–20mA) |
| Operating Voltage | 100V–480V AC (Standard generator voltage) |
| Adjustment | Front-panel potentiometers (Gain/Stability) |
| Mounting | DIN-rail or panel-mount |
| Environment | Marine-grade electronics (Vibration/Humidity resistant) |
Recommended Related Models
These Selco components are commonly integrated into generator control panels along with the T4800 to form a comprehensive Power Management System (PMS):
- T4400: Synchroscope/Synchronizer (for automatic breaker closing)
- T4500: Auto Synchronizer (advanced version)
- T4900: Load Sharer & Var Controller (for reactive power control)
- T4300: Generator Protection Relay
- T4700: Multi-Function Protection Relay
- M2000: Digital Metering/Instrumentation Series
- T4000: Generator Control Series (General)
- T4800.0020: T4800 variant (with different sensitivity/interface)
Important Technical Note: The T4800 is a “closed-loop” controller. When commissioning, ensure the direction of the current transformers (CTs) is correct, as the T4800 relies on the phase relationship between voltage and current to calculate active power. If the wiring is reversed, the module will attempt to “dump” load rather than share it, leading to a catastrophic power management failure or engine stall.
