Cooling method	Forced water cooling, heat exchanger with cooling tower
Lubricating method	Pressure and splash lubrication
Cylinder number	Output end	1-2-3-4-5-6-7-8-9-10-11-12
Ignition mode	SI
Ignition sequence	1-8-5-10-3-7-6-11-2-9-4-12
Starting method	24V DC motor starting
Rotation direction	Counter‐clockwise (facing output end)
Power output method	Flywheel output

FCP1- 700T field control panel functions protections to the generator set and prevent against damage which may result from overload, over current, short circuit, reverse power, under-frequency, over frequency, under voltage, overvoltage and high or low battery voltage, additionally, it can also provide monitoring to cooling water temperature, oil temperature, oil pressure, speed and mixer opening, water level in water radiator, oil level ion oil sump and raise alarm or bring an automatic fault shutdown.

The intelligent AIO-NT of ComAp main control module and the IS-DISPLAY is integrated to provide the complete operation and management to the gas generator sets. Combined with the speed governor and AVR, this module achieves the quasi-paralleling and automatic power factor, and allows One-Touch Start with only a single press of the button and automatic regulation of air and fuel ratio.

1.1 Parameters Measurement and Protection

The system displays parameters with graphs or digits by a big LCD. Complete parameters are measured including three-phase voltage, three-phase current, power, power factor, frequency, load & power factor of customers; accumulated genset electricity, accumulated operating hours, storage battery voltage and engine operating status including exhaust temperature and 12-cylidner temperature, oil pressure before/after filtering and turbocharger, engine speed, temperature soft circulation water, engine room and oil sump, after-cooling mixture gas and winding, pressure of after-cooling mixture gas, high/low temperature water return as well as carburetor opening feedback and others.

The system will raise alarm subject to the over-limit status described in the above mentioned parameters. The three-grade alarms are prepared in the system involving in the accouse-optic, switch-off and engine shutdown. All alarm values have been set in the factory, and never modify these parameters unless it has been permitted by the  technicians.

1.2 Controlling of Generator Set

The control system consists of a main controller AIO-NT, a display module IS-DISPLAY, a voltage change module IG-AVRI, DC power and control relays and more, bringing control to the engine including Start and Stop, Switch-On/off of relays, automatic regulation of voltage, power factor, speed and load, automatic switch-on/off of synchronization and others. Please read the manuals of AIO-NT and IS-DISPLAY for detail information.

1.2.1 Voltage Setting

Automatic voltage regulation of the generator set is functioned by the main controller AIO-NT, a voltage interface module IG-AVRI and voltage change module IG-AVRI-TRANS. Voltage may be adjusted manually through the voltage setting potentiometers according to the actual situation.

1.2.2 Automatic Synchronization

The generator set is synchronized automatically to power grid. During synchronizing, the main controller analyzes electric parameters between the bus-bar and generator sets, and detect whether the differential amplitude and the phase angle between the genset and the power grid fall within the required values, i.e. whether both parts are synchronous, if not, the main controller will change the voltage and frequency of the generator set automatically. When the required synchronous values arrive, the main controller will send out a switch-on signal automatically to have the genset breaker closed.

After being connected to the power grid, the main controller will adjust the excitement current automatically according to the setting value of power factor and keep the power factor within the set range.

1.2.3 Speed Governing System

The speed governing system consists of the Woodward electronic speed governor, speed sensor and actuator. For details, refer to the relative manuals.

1.2.4 Alarm

It is critical to monitor parameters of the genset operating status. When alarm occurs, the main control module will send out corresponding actuating signals according to different types of alarms. This part consists of an AIO-NT, alarm relay, alarm horn and alarm indicators. When fault alarm occurs, AIO-NT will pop out the alarm menu, indicate alarm elements and record automatically operating parameters of the generator set for customers review later.

The main controller AI0-NT will achieve these protections including high temperature, high exhaust temperature, over-speed, high cooling water temperature, low oil pressure, overload, over current, short circuit, reverse power, under or over frequency, under or over voltage, excessive high or low battery voltage and others.

When alarm fault occurs, the alarm indicator lights and sounds, and the main controller AIO-NT will send out corresponding signal like alarm, breaker switch-off or shutdown. Press the Horn Reset button in the AIO-NT to eliminate the alarm. Explore and correct the fault and reset by pressing the button of Fault Reset button in the AIO-NT. As for parameters and alarm control functions that the panel will provide, please see table 1.

Table 1 Protection and Control Parameters

1 Functions