Commercial Diesel Generator

The commercial diesel generators made in China provided by Kecheng can serve as backup or peak shaving power sources for commercial places such as shopping malls, hotels or office buildings. This product adopts commercial-grade engines such as Yuchai and Weichai as its core power source, ensuring stable and reliable operation. Equipped with an intelligent control system, it can achieve seamless switching between municipal power and power generation, and manage peak and off-peak electricity consumption. The unit adopts double-layer sound insulation and other silent designs, which can effectively reduce operating noise and minimize the impact on the surrounding environment. It supports customized power ranging from 50 to 500kW and offers installation options such as container type or building-integrated type to meet the spatial and aesthetic requirements of commercial Spaces. The product has passed the relevant national standard certifications. The core components come with a two-year warranty. It is an ideal choice for ensuring the safety of electricity usage throughout the year and peak shaving in commercial premises.

Application scenarios (Exclusive adaptation for commercial venues)

1.Large shopping malls/chain supermarkets

• Applicable scenarios: Shopping centers (elevators, central air conditioning, lighting systems), chain supermarkets (cold chain refrigerators, cash register systems, escalators)

• Core value: Seamless switching within ≤10 seconds when the mains power is interrupted (combined with commercial ATS), avoiding the risk of cold chain food spoilage (daily loss exceeding 100,000 yuan) and customers being stranded in elevators. During peak hours (such as the peak electricity consumption on holidays), it can replace the municipal power supply, saving the commercial peak-valley electricity price difference (saving 50,000 to 100,000 yuan in electricity fees annually).

2. Star hotels/high-end homestays

• Applicable scenarios: Five-star hotels (room power supply, banquet hall equipment, central air conditioning, hot water systems), high-end homestays (constant-temperature swimming pools, intelligent guest control systems)

• Core value: Silent design (operating noise ≤70dB@15 meters), avoiding disturbing the rest of guests in the guest room; Supports 24-hour continuous operation (large-capacity fuel tank + external fuel source), ensuring that important events such as weddings and conferences are not interrupted. It can be linked with the hotel's smart system to remotely monitor the status of the unit (no need for dedicated personnel to stand by).

3. Office buildings/business centers

• Applicable scenarios: Grade A office buildings (office computers, server rooms, emergency lighting, fresh air systems), start-up parks (shared office equipment, park supporting facilities)

• Core value: Stable operation under low load (no fluctuation even when the load rate is 20%-30%), suitable for the "daily low load + sudden high load" characteristics of office buildings. The generator has high output power quality (voltage distortion rate ≤3%), protecting servers and precision office equipment from damage caused by voltage fluctuations. Supports parallel connection of multiple units (such as two 200kW units working in tandem), meeting the expansion requirements of large business centers.

4. Commercial complexes/chain restaurants

• Applicable scenarios: Urban complexes (catering kitchen equipment, cinema projection systems, children's playground facilities), chain catering (central kitchens, cold chain distribution stations)

• Core value: Withstand "shock loads" (such as the starting current of kitchen electric fryers and freezers) to prevent the unit from going out; The fuel system is designed to prevent leakage (in compliance with commercial fire protection standards), meeting the "high fire resistance rating" requirements of catering places. Customizable "underground machine room installation" (waterproof and moisture-proof treatment), saving commercial floor space.

5. Convention and exhibition centers/sports venues

• Applicable scenarios: Exhibition centers (power supply for temporary booths, lighting and sound systems, LED large screens), sports venues (event lighting, scoring systems, air conditioning for spectator stands)

• Core Value: Rapid deployment (containerized models can be put into use upon arrival), meeting the "short-term and high-frequency" power demands of exhibitions; Support multi-load zoned power supply (such as independent control of exhibition areas and office areas) to avoid the impact of a single load failure on the entire system. The continuous operation time is ≥24 hours (with an external large-capacity fuel tank), meeting the requirements of cross-day exhibitions/events.

Product advantages (Core competitiveness in commercial scenarios)

Technical parameters (Commercial models 50-500kW breakdown)

Technical features (Customized design for commercial scenarios)

1.Commercial-grade power optimization

• Engine Compatibility: Select Yuchai YC6MK (50-150kW), Weichai WP12 (150-300kW), and Cummins QSZ (300-500kW) commercial engines, optimized for the "low-load high-frequency start" characteristics of commercial engines The start-up frequency has been increased to 10,000 times (8,000 times for the regular model), and the stability of idle operation has been improved by 30% (avoiding stalling under low load).

• Generator power quality: Low-harmonic brushless generators are adopted (voltage distortion rate ≤3%), suitable for commercial precision equipment (such as servers, LED large screens); The voltage regulation rate is ≤±0.5%. When dealing with the "impact load" of elevators and air conditioners in shopping malls, the voltage fluctuation does not exceed 2% to prevent equipment from restarting.

2. Silent noise reduction system

• Multi-layer sound insulation structure: The inner layer of the silent cover is made of 80mm high-density sound-absorbing cotton (sound absorption rate ≥90%), and the outer layer is 2mm galvanized steel plate (anti-corrosion). The joints of the cover body are sealed with sound insulation rubber strips. A labyrinth muffler is installed at the air inlet, and an impedance composite muffler is used at the air outlet. The overall noise reduction reaches 35dB (25dB for ordinary models).

• Vibration isolation: Rubber shock-absorbing pads (damping coefficient ≥0.3) + spring shock absorbers (natural frequency ≤5Hz) are used between the unit and the foundation, reducing the transmission of the unit's vibration to the building structure by 90% and preventing noise from spreading through walls/floors to guest rooms and office areas.

3. Commercial intelligent control and management

• KCPLC-04 Dedicated controller:

① Peak and off-peak power consumption management: Preset the peak and off-peak periods of the municipal power supply (such as 8:00-22:00 as the peak period), automatically switch the power supply of the units to reduce electricity charges.

② Load linkage: When the load of a single unit is ≥80%, the standby unit is automatically started; when the load is ≤40%, the standby unit is automatically shut down to avoid the situation of "a big horse pulling a small cart".

③ Data Statistics: Automatically generate "Daily/monthly power generation and fuel consumption reports" to support cost accounting and energy management for commercial users.

• Remote operation and maintenance: Through the "Kecheng Electric Power Commercial Operation and Maintenance Platform", it can achieve: remote start and stop, parameter monitoring (voltage, current, fuel consumption), fault alarm (SMS + wechat push), support centralized management of multiple units (such as unified monitoring of 5 units in a commercial complex), and operation and maintenance personnel do not need to be on site.

4. Commercial installation and adaptation

• Space optimization design: Small and medium-sized models support "side-mounted fuel tanks" (saving 30% of floor space), while large models adopt container design (dimensions suitable for elevator/aisle transportation in commercial buildings), and can be installed on rooftops, basements, and outdoor green belts (not occupying commercial business space).

• Environmental adaptability: Optimized cooling system (can operate at full load at a high temperature of 45℃ and start at a low temperature of -25 ℃ without the need for additional heating equipment); The electrical system is IP25 protected (splash-proof and dust-proof), suitable for damp basements and high-temperature rooftops in commercial buildings. The exhaust pipe can be customized for "concealed installation" (integrated with the building's exhaust system, with strong aesthetic appeal).

5. Strengthening of security and compliance

• Fuel safety: The fuel tank adopts a double-layer stainless steel structure (with an outer layer to prevent leakage), and is equipped with a liquid level sensor (low fuel level alarm) and an emergency shut-off valve (automatically closes in case of fire). The biogas leakage alarm is linked with the exhaust system (when the concentration is ≥0.1% VOL, the exhaust system automatically starts and cuts off the fuel supply).

• Electrical safety: All electrical components comply with the commercial requirements of GB 50054 "Code for Design of Low-Voltage Power Distribution", and the terminal blocks adopt explosion-proof sealing (to avoid short-circuit sparks). The grounding resistance of the unit is ≤4Ω, and it is equipped with a lightning protection module (suitable for the lightning environment on the rooftops of commercial buildings).

Usage Method (Easy Operation in Commercial Scenarios)

1. Pre-startup inspection (daily/weekly graded inspection)

(1)Daily inspection (completed by operation and maintenance personnel within 10 minutes)

(2)Weekly inspection (completed by operation and maintenance personnel within 30 minutes)

2. Startup operation (automatic/manual dual mode)

(1) Automatic mode (commercial mainstream, no manual intervention required)

1. Parameter preset: On the KCPLC-04 controller, set the "peak and off-peak periods" (such as 8:00-22:00 during peak hours) and the "load linkage threshold" (such as starting the standby unit at 80%).

2.ATS linkage: Switch both the primary and backup ATS to the "automatic" position, and the ATS will monitor the mains voltage in real time.

3. Automatic operation: When the mains power is interrupted or peak hours arrive, the ATS triggers the unit to start (preheating for 30 seconds → starting → voltage stabilization → load switching, the entire process ≤10 seconds). When the mains power is restored or off-peak hours arrive, the unit will automatically switch back to the mains power and run unloaded for 5 minutes before shutting down.

(2) Manual mode (for emergency/debugging use)

1. Permission unlocking: Enter the commercial operation and maintenance password in the controller (to prevent unauthorized operations), and switch to the "manual" mode;

2. Preheating start: Press the "Preheating" button (preheat for 60 seconds in a low-temperature environment), then press the "Start" button. Observe that the rotational speed (1500r/min), oil pressure (≥0.3MPa), and voltage (380V±5%) are stable, and then close the output switch.

3. Load loading: Load according to the "commercial load priority" (first cold chain/elevator → then lighting/air conditioning → finally non-essential load), with a single load not exceeding 20% of the rated power.

3. Operation Monitoring (combining remote and on-site)

• Remote monitoring: Real-time viewing of: ① Unit status (operation/standby/fault) through the "Kecheng Commercial Operation and Maintenance Platform"; ② Key parameters (voltage, current, fuel consumption, noise value); ③ Load curve (to determine whether the standby unit needs to be started);

• On-site inspection: Conduct one inspection per day, with a focus on checking: ① Whether there is any abnormal noise from the soundproof cover (to determine if the sound insulation cotton has fallen off); ② Check for any leakage in the fuel tank (no oil stains on the ground); ③ATS switching record (no abnormal switching);

• Abnormal handling: When the controller alarms, the platform automatically pushes fault information (such as "high water temperature" → Check the cooling system). Maintenance personnel need to arrive at the scene within 30 minutes to troubleshoot and avoid prolonged downtime.

4. Shutdown operation (automatic/manual)

(1) Automatic shutdown

When the mains power is restored or off-peak hours arrive, the controller automatically unloads (the load drops to 0) → disconnects the generator output switch → runs the engine no-load for 5 minutes (to cool the engine) → stops the machine → closes the fuel valve (long-term shutdown).

(2) Manual shutdown (Emergency/maintenance)

1. Hierarchical unloading: First, turn off non-essential loads (such as lighting and air conditioning) → then turn off core loads (such as cold chain and elevators) → Reduce the load to 0.

2. Shutdown operation: Press the "Shutdown" button on the controller. The unit will run unloaded for 5 minutes and then stop.

3. Safety closure: Disconnect the main generator switch, switch the ATS to the "manual" position (to avoid accidental start-up), and record the shutdown time and operation data.

Security and Protection (Compliance Standards for Commercial Scenarios)

1. Installation safety (in compliance with commercial building standards)

• Site selection and layout:

① The installation area should be far away from commercial business areas (such as the atrium of a shopping mall or hotel rooms), and be at least 15 meters away from open flame sources (in compliance with fire protection regulations).

② For basement installation, an "explosion-proof exhaust system" (with an hourly ventilation volume of no less than 20 times the volume of the unit) is required. For roof installation, windproof fixation (resistant to typhoons of up to level 12) is necessary.

③ The distance between the unit and the building wall should be no less than 1.5 meters (for easy maintenance), and the width of the passage should be no less than 1.2 meters (for emergency evacuation).

• Electrical compliance

① The output line of the generator adopts flame-retardant cable (YJV22-0.6/1kV), and the laying complies with GB 50217 "Design Standard for Power Engineering Cables" (avoid co-management with commercial lighting lines).

② When connected to the grid, an "Anti-islanding protection device" (in compliance with GB/T 19939-2005) must be installed. It is prohibited to be directly connected to the municipal power grid (to avoid affecting the safety of the power grid).

③ It is equipped with emergency lighting (automatically turns on when power is cut off) and emergency buttons (emergency stop, one-click cut-off of fuel and power supply).

• Fire protection configuration:

① The installation area is equipped with 2 8kg ABC dry powder fire extinguishers (no more than 5 meters away from the unit) and 1 fire sandpit (with a volume of no less than 1 cubic meter).

② Install an "explosion-proof smoke detector" near the fuel tank, which is linked with the commercial building's fire protection system (triggering the building's sound and light alarm when an alarm is triggered).

③ Regularly (quarterly) conduct fire drills (with the participation of commercial operation and maintenance teams to familiarize themselves with the fire extinguishing and evacuation procedures).

2. Operational Safety (Commercial Operation and Maintenance Specifications)

• Personnel requirements:

① Operation and maintenance personnel must undergo the "Commercial Unit Specialized Training" provided by Kecheng Electric Power. After passing the assessment, they can work with a certificate (the certificate is valid for 2 years and requires annual review).

② Non-operation and maintenance personnel are prohibited from entering the installation area of the unit (access control system is installed and card swiping is required for entry).

③ When operating, wear anti-static work clothes and insulating shoes. When touching electrical components, wear insulating gloves.

• Operating contraindications:

①When the unit is in operation, it is strictly prohibited to open the silent cover (to prevent noise leakage and high-temperature burns) or disassemble the fuel pipeline (to prevent leakage).

② Maintenance work is prohibited during commercial business hours (such as the operating hours of shopping malls and peak check-in periods of hotels) (except for special faults, which require advance reporting).

③ When refueling, the machine must be shut down. The refueling should be carried out only after the unit has cooled to room temperature (≤40℃). It is strictly prohibited to use plastic buckets for refueling (to avoid static electricity ignition).

• Emergency response:

① Fuel leakage: Stop the machine immediately → Close the fuel valve → Start the exhaust system → Clean the leaked fuel with oil-absorbing cotton → Check the leakage point (if the joint is loose, tighten it), and only start the machine after confirming there is no leakage.

② Fire accident: Press the "Emergency Stop" button immediately → Use dry powder fire extinguishers to put out the fire → Call 119→ Evacuate people around → Notify the person in charge of the commercial place to activate the emergency response plan.

③ Failure to switch in case of power failure: Manually switch the ATS to the "backup power" position → Start the backup unit → Check for faults in the main unit to prevent prolonged interruption of commercial loads.

3. Maintain security (Commercial Maintenance Standards)

• Preparations before maintenance:

① Disconnect the main power supply of the unit, close the fuel valve, and hang a warning sign that reads "Under maintenance, do not start".

② After confirming that there is no electricity with a voltage tester, carry out maintenance on the electrical components.

③ Prepare maintenance tools (insulated wrenches, explosion-proof flashlights) and spare parts (filters, gaskets, original parts from Kecheng).

• Maintenance operation specifications:

①When replacing the filter, it should be done after the unit has cooled down (to avoid hot oil splashing out). The old filter needs to be sealed and recycled (handed over to a professional institution for treatment to meet environmental protection requirements).

②When cleaning the sound-absorbing cotton of the silent cover, do not rinse it with water (use a vacuum cleaner to remove the dust) to avoid the sound-absorbing cotton getting damp and becoming ineffective.

③ When adjusting the ATS switching parameters, the load should be disconnected first (to avoid power failure during switching), and then three tests should be conducted after adjustment (to ensure successful switching).

• Professional maintenance

①Complex maintenance such as engine valve clearance adjustment and generator insulation testing must be carried out on-site by the after-sales engineers of Kecheng Electric Power Commercial (once a year, free service).

②After maintenance, a "load test" (loading to 50% of the rated power and running for 30 minutes) should be conducted. Only after confirming that the unit has no faults can it be put into standby.

Maintenance Cycle Table (Exclusive for Commercial Models)