Hotel Applications

The first feature is that for emergency use, the continuous working time is not long and generally only requires continuous operation for a few hours (≤12H);
The second feature is that it is used as a backup. The emergency generator set is usually in a shutdown and waiting state. Only when the main power supply is completely blocked and the power is cut off, the emergency diesel generator set will start running to supply the emergency power load. When the main power supply returns to normal, it will switch immediately. downtime.  

(1) Determination of the emergency hotel diesel generator generator capacity. The calibrated capacity of the emergency hotel diesel generator set is the 12h calibrated capacity corrected by the atmosphere. Its capacity should be able to meet the total calculated emergency power load, and the generator capacity should be able to meet a certain Verify the starting requirements of a single maximum capacity motor in grade load. Emergency generators generally use three-phase AC synchronous generators with a calibrated output voltage of 400V.

(2) Determination of the number of emergency hotel diesel generator sets. When there are multiple generator sets in standby, generally only one emergency hotel diesel generator set is installed. For reliability reasons, two units can also be used in parallel for power supply. The number of generator sets for emergency use should generally not exceed 3. When multiple units are selected, the units should try to use complete sets of equipment with the same model, capacity, and similar pressure and speed regulation characteristics. The properties of the fuel used should be consistent to facilitate maintenance and sharing of spare parts. When there are two generator sets supplying emergency needs, the self-starting device should enable the two units to serve as backup for each other. That is, after the mains power failure and power outage are delayed and confirmed, a self-start command will be issued. If the first unit self-starts three times in a row, If starting fails, an alarm signal should be sent and the second hotel diesel generator should be started automatically.

3) Selection of emergency hotel diesel generator The emergency unit should choose a hotel diesel generator set with high speed, supercharging, low fuel consumption and the same capacity. The high-speed supercharged diesel engine has a larger single unit capacity and takes up less space; the diesel engine should be equipped with an electronic or hydraulic speed regulating device, which has better speed regulating performance; the generator should be a synchronous motor equipped with a brushless excitation or phase compound excitation device, which is more reliable and prevents faults. The efficiency is low, and maintenance and inspection are more convenient; when the capacity of a single air conditioner or the capacity of the motor in the primary load is large, a generator set with third harmonic excitation should be selected; the unit is assembled on a common chassis with a shock absorber; smoke exhaust A muffler should be installed at the pipe outlet to reduce the impact of noise on the surrounding environment.