Product requirements and challenges

Similar to the use of diesel generator sets in hospitals, banks have higher requirements in terms of anti-interference and other environmental aspects, so they have strict requirements on the performance stability, AMF and ATS functions, instant start time, low noise, low exhaust emissions, anti-interference, safety and other aspects of diesel generator sets.

1. Working conditions

The unit can work reliably and output power under the following conditions, and can work continuously for 24 hours at rated power output (including 10% overload for 1 hour every 12 hours);

Altitude does not exceed 1000 meters;

The lower limit of the ambient temperature is -15C°, and the upper limit is 40C°. Other environmental units can be selected.

2. Low working noise and low emissions

Ultra-low noise, with a sufficiently quiet environment to ensure the safety of the data center system and the peace of mind of bank staff;

Low exhaust emissions to ensure the cleanliness of the computer room and the security of the computer system and data.

3. Main and necessary protection devices

The unit can automatically detect and alarm the starting battery voltage. The unit will automatically shut down in the following cases: too low, too high water temperature, too low water level, overload, start failure, and send out corresponding signals;

Emergency shutdown in the following cases: overspeed, short circuit, phase loss, too high voltage, loss of pressure, low frequency;

Automatically send out sound and light alarm signals in the following cases: too low oil pressure, too high water temperature, too low water level, overload, start failure, overspeed, short circuit, phase loss, too high voltage, loss of pressure, low frequency, too low starting battery voltage, too high starting battery voltage, low oil level and the unit’s alarm system has relay contacts;

The unit’s starting mode is selected as automatic starting mode. The unit must have AMF (automatic mains failure) function and be equipped with ATS to achieve fully automatic starting. When the city power is cut off, the unit can be automatically started after the start time delay is <5 seconds (adjustable) (a total of three consecutive automatic start functions), the city power/unit full load switching time is <10 seconds, and the time required to meet the input load is less than 12 seconds. After the city power is restored, the unit maintains 0-300 seconds of operation and automatically stops after cooling (adjustable);

Equipped with UPS power system.

4. The brushless permanent magnet excitation AC generator can provide a higher motor starting tolerance, and has anti-interference to the waveform distortion of the host stator output voltage generated by non-linear loads, which can improve the generator’s ability to carry non-linear loads. Stronger short-circuit current tolerance (usually up to 3 times the rated current, lasting 10S).
5. Stable performance and strong reliability

The average failure interval of the unit is not less than 2000 hours;

In terms of technical performance, the no-load voltage setting range of the unit is 95-105% of the rated voltage;

When the unit supplies power to a phase-controlled rectifier, a switching power supply, a UPS power supply or other loads, low-frequency oscillation will not occur when the starting load is less than 50% of the rated value of the unit;

The generator can be overloaded with 1.5 times the rated current at rated voltage for 2 minutes;

The unit has telemetry, telesignaling and remote control functions, and can monitor, collect, process, record and report relevant data of the equipment locally and remotely.

Solution

The generator set with excellent and stable performance adopts a low-noise design and is equipped with a PLC-5220 control system with AMF function. By connecting with ATS, it ensures that once the bank loses power to the main power supply, the alternative power supply system must be able to provide power immediately. Stable, low-noise, engine power that meets European and American emission standards, as well as AMF function and ATS equipment meet the special requirements of banks. By equipping with RS232 or RS485/422 communication interface, it can be connected with computer for remote monitoring, remote control, remote signaling and remote measurement, and fully automatic and unattended operation.

Advantages

A full set of products and solutions are provided to reduce the user’s technical requirements and make the use and maintenance of the unit easier;

The control system has AMF function, which can be automatically started, and has automatic shutdown and alarm functions under multiple monitoring;

ATS is optional, and the small unit can use the built-in ATS of the unit;

Ultra-low noise power generation to meet the needs of daily life;

Stable performance, the average failure interval of the unit is not less than 2000 hours;

The unit is small in size, and some devices can be optionally equipped to meet the operation requirements of cold and high temperature areas;

Customized design and development can be provided for the special needs of some customers