About Us / FAQ

A: A diesel generator set is mainly composed of three core systems:
•Power System: Diesel engine (provides the power source);
•Power Generation System: Synchronous generator (converts mechanical energy into electrical energy);
•Control System: Control cabinet (includes functions of starting, stopping, speed regulation, voltage regulation, and protection).
In addition, it also has auxiliary components such as the cooling system (water tank, fan), lubrication system (oil pump, oil passage), and fuel system (fuel tank, fuel pipe, filter).

A: The selection should follow the principle of "actual maximum load + redundancy":
•First, calculate the total power of all electrical equipment (resistive loads such as light bulbs are added directly; inductive loads such as motors need to be multiplied by 2-3 times the starting current);
•Reserve 10%-20% redundant power (to avoid overheating and shortened service life caused by full-load operation);
•If there are large motors (such as water pumps, compressors), focus on the "starting power" and prioritize generator sets with "automatic start" or "soft start" functions.

A: •Continuous Power (COP): Refers to the rated power at which the unit can operate continuously for 24 hours without interruption. It is recommended that the load rate during operation does not exceed 90%. It is suitable for long-term power supply (e.g., remote areas, backup main power for factories);
•Standby Power (PRP): Refers to the maximum power that the unit can only use for short-term emergencies (usually continuous operation does not exceed 12 hours, and the total operation time per 24 hours does not exceed 1 hour). The load rate must not exceed 100%. It is suitable for emergency power outage scenarios (e.g., hospitals, data centers);
Note: Long-term operation at standby power will increase engine wear and the risk of failures.

A: Complete the "four checks and two inspections" before starting:
•Check fuel: Ensure the fuel tank has sufficient fuel (not less than 1/3), no leakage in the fuel pipeline, and the valve is open;
•Check engine oil: Pull out the oil dipstick, check that the engine oil level is between the "MIN" and "MAX" marks, and the oil quality is free of emulsification and blackening;
•Check coolant: Open the water tank cap (when the unit is cold), ensure the coolant level submerges the water tank heat dissipation pipes, and there is no turbidity or leakage;
•Check circuit: Check the battery voltage (not less than 11.5V for 12V units, not less than 23V for 24V units), and no looseness or oxidation at the terminal blocks;
•Inspect instruments: The indicator lights on the control cabinet are normal (no fault alarms), and the tachometer and voltmeter pointers return to zero;
•Inspect environment: No flammable or explosive materials around the unit, and good ventilation (distance from walls and obstacles is not less than 1 meter).

A: •After a cold start, the unit needs to run at idle speed for 3-5 minutes (to allow the engine oil to fully lubricate all components and the coolant temperature to rise above 40°C). Load the unit gradually only after the speed is stable and there is no abnormal noise;
•Load principle: "Start with small loads and increase gradually" to avoid loading 100% of the load at one time (especially for inductive loads);
•Monitor instruments: After loading, real-time monitor the voltage (380V/220V ±5% is normal), frequency (50Hz ±0.5Hz is normal), and engine oil pressure (not less than 0.2MPa at idle speed, not less than 0.3MPa at rated speed). If there is excessive voltage fluctuation or abnormal frequency, unload immediately for inspection.

A: Shutdown is divided into "normal shutdown" and "emergency shutdown":
•Normal Shutdown: First, unload all loads gradually (turn off electrical equipment), run at idle speed for 3-5 minutes (to allow the unit temperature to drop slowly). After the coolant temperature drops below 60°C and the instrument pointers return to zero, press the "stop" button and close the fuel valve;
•Emergency Shutdown: Only use it in critical situations such as "sudden drop in engine oil pressure, abnormally high speed (runaway), coolant leakage, thick smoke/open flame". Immediately press the "emergency stop" button (or pull the mechanical stop lever). After shutdown, troubleshoot and solve the problem; do not restart directly.

A: Common causes and solutions:
•Insufficient battery power: Use a multimeter to test the battery voltage. If it is lower than the standard value, charge it with an external charger (charging voltage is 13.5-14V for 12V batteries, 27-28V for 24V batteries) or replace the battery;
•Starter motor failure: Check if the starter motor terminals are loose. If the motor has no action after power-on, the motor carbon brushes may be worn or the coil may be burned; disassemble and repair;
•Insufficient fuel supply: Check the fuel level in the fuel tank (whether it is below the minimum mark), whether the fuel filter is clogged (clean or replace the filter element), and whether there is air in the fuel pipeline (loosen the fuel injector return pipe, manually pump oil until there are no bubbles, then tighten);
•Excessive valve clearance: Check the valve clearance when the unit is cold (0.25-0.3mm for intake valves, 0.3-0.35mm for exhaust valves). If the clearance is too large, adjust the valve lifter.

A: Troubleshoot in the following steps:
1.Check the load: Whether there are "high-power equipment that starts and stops frequently" (such as electric welders, frequency converters). If so, turn off the equipment first and observe whether the voltage returns to normal;
2.Check the voltage regulation system: Open the control cabinet, check if the wiring of the "automatic voltage regulator (AVR)" is loose. If the wiring is normal, try to fine-tune the AVR knob (clockwise to increase voltage, counterclockwise to decrease voltage). If it is ineffective, the AVR may be damaged and needs to be replaced;
3.Check the generator components: Disassemble the generator end cover, check if the stator and rotor coils are short-circuited or grounded (use a multimeter to measure the insulation resistance, which should be not less than 0.5MΩ for normal operation). If the coils are damaged, professional repair is required;
4.Check the speed: If the frequency fluctuates at the same time (e.g., below 48Hz or above 52Hz), the engine governor may be faulty. Adjust the governor spring or replace the governor.

A: "Black smoke" is mostly caused by "incomplete combustion". Common causes:
•Insufficient air supply: Check if the air filter is clogged (clean the paper filter element or replace the sponge filter element), and if the intake pipe has air leakage (apply soapy water to the interface; no bubbles indicate normal);
•Excessive fuel supply: Adjust the fuel injection pressure of the fuel injector (the standard pressure is determined by the engine model, usually 18-22MPa). If the fuel injector has poor atomization (oil dripping, oil leakage), replace the fuel injector coupling;
•Overload: Monitor the load rate in real time. If it exceeds 100% of the continuous power, unload some equipment to avoid overloaded operation;
•Engine carbon deposition: Long-term low-load operation is prone to carbon deposition. Regularly (every 500 hours) use "diesel detergent" to clean the fuel circuit, or disassemble the piston and valve to clean the carbon deposition.

A: Focus on troubleshooting the following fault points:
•Engine oil pressure protection: If the engine oil pressure alarm light is on before shutdown, it may be due to insufficient engine oil (add engine oil), faulty oil pump (disassemble and repair), or clogged oil filter (replace the filter element). The unit can only be restarted after the problem is solved;
•Excessively high coolant temperature: If the water temperature gauge exceeds 95°C (normal range: 65-90°C) before shutdown, check if the water tank is short of water (add coolant), if the fan belt is loose (adjust the belt tension), or if the water tank cooling fins are clogged (wash with a high-pressure water gun);
•Fuel exhaustion or pipeline blockage: Check the fuel level in the fuel tank. If it is sufficient, disassemble and inspect the fuel filter (whether it is clogged with impurities) and the fuel pump (whether it supplies oil normally);
•Circuit fault: Check if the "overload protection switch" in the control cabinet is tripped (reset the switch), and if the generator coil is short-circuited (measure the insulation resistance). Professional electricians are required to detect circuit faults.

A: Daily maintenance process (in shutdown state):
1.Cleaning: Wipe off dust and oil stains on the unit surface, and clean up debris around the water tank and fan (to avoid affecting heat dissipation);
2.Inspection: Confirm that the fuel, engine oil, and coolant levels are normal, the battery wiring is not loose, and there are no fault alarms on the instruments;
3.Test run: No-load operation for at least 15 minutes every week (to maintain the flexibility of the unit, avoid battery power loss, and prevent component rusting). Record parameters such as voltage, frequency, and engine oil pressure during operation;
4.Recording: Fill in the "Unit Operation and Maintenance Record Form", and record the start time, shutdown time, and fault conditions (if any).

A: 500-hour/6-month maintenance (whichever comes first):
•Replace consumables: Engine oil (select according to the engine model, such as CD-grade, CF-grade diesel engine oil), oil filter, fuel filter, and air filter;
•Inspect components:
a.Check the tension of the fan belt and generator belt (press the belt; a deflection of 10-15mm is normal). Replace if there are cracks or aging;
b.Check the battery electrolyte level (for maintainable batteries, add distilled water to the "MAX" mark), and clean the oxide layer on the terminal blocks (apply Vaseline for rust prevention);
c.Check the fuel injection pressure of the fuel injector (test with a fuel injector test bench) and adjust the valve clearance;
•Clean the system: Rinse the water tank cooling fins (to avoid scale blockage), clean the fuel tank (drain the sediment at the bottom), and check the tightness of the fuel pipeline.

A: Long-term storage requires "anti-corrosion, moisture-proof, and anti-power loss":
1.Shutdown treatment: After normal shutdown, drain the engine oil (to avoid oxidation and deterioration of the engine oil), drain the coolant (if the ambient temperature is below 0°C, to prevent the water tank from freezing and cracking), fill the fuel tank with diesel (to reduce air contact and avoid fuel tank rust), and add "fuel stabilizer";
2.Circuit protection: Disconnect the battery terminals (to avoid power loss due to leakage) or charge the battery once a month (to keep the battery fully charged);
3.Component protection: Install dust covers at the engine air inlet and exhaust port, and apply anti-rust oil to exposed metal components (such as screws, joints);
4.Environmental requirements: Store in a dry, ventilated room without corrosive gases. Place wooden boards under the unit base (to avoid rust on the base caused by ground moisture). Conduct no-load operation for 30 minutes regularly (once a month) to check the unit status.

A: Judge through "observation, smell, and measurement":
•Observation of color: New engine oil is light yellow and darkens gradually after use. If the color turns black (close to ink color), emulsifies (milky white), or has impurities (particles, floccules), replace it immediately;
•Smell: Normal engine oil has a slight diesel smell. If there is a burnt smell or sour smell, it indicates that the engine oil has deteriorated;
•Measurement of viscosity: Dip a small amount of engine oil with your fingers. If it feels dry and non-sticky (normal engine oil has a lubricating feel), or the engine oil on the dipstick falls in "drops" (normal engine oil falls in a "line"), replace the engine oil.

A: The "five prohibitions" for safe operation:
1.Do not disassemble components when the unit is running (especially high-temperature components such as the exhaust pipe and water tank to avoid scalding);
2.Do not smoke or use open flames near the fuel tank (diesel has a low flash point and is easy to cause fires);
3.Do not add fuel or engine oil when the unit is not shut down (to avoid oil splashing into high-temperature components and causing combustion);
4.Do not allow non-professionals to operate the unit (especially the control cabinet and circuit parts to avoid electric shock or misoperation);
5.Do not operate the unit in a poorly ventilated environment (diesel combustion produces carbon monoxide; ensure indoor ventilation or connect an external exhaust pipe to discharge exhaust gas outdoors).

A: Exhaust gas treatment requirements:
•Outdoor use: If the unit is placed outdoors (e.g., construction sites, base stations), the exhaust pipe should face an open area (to avoid exhaust gas blowing towards people or equipment), and the height should be not less than 2 meters (to reduce exhaust gas accumulation);
•Indoor use: Must connect an "stainless steel exhaust pipe" (high-temperature resistant) to discharge exhaust gas outdoors. Seal the exhaust pipe interface with "high-temperature resistant sealant" (to avoid leakage). It is forbidden to discharge exhaust gas in basements or closed workshops (easy to cause carbon monoxide poisoning);
•Safety tips: Regularly check whether the exhaust pipe has cracks or corrosion (replace if damaged). Do not allow people to approach the exhaust pipe during operation (the surface temperature can reach above 300°C, easy to cause scalding).

A: "Runaway" is a serious safety accident. Preventive measures:
1.Regularly inspect the fuel system: Avoid fuel pipeline leakage and fuel injector jamming (replace the fuel injector coupling regularly). The fuel pump governor requires professional debugging (do not adjust it privately);
2.Avoid misoperation: Confirm that the "throttle knob" is in the "idle speed" position when starting; do not turn it directly to "high speed". Unload first when shutting down; do not shut down directly with load;
3.Install protective devices: Some units are equipped with "runaway protection devices" (such as overspeed stop valves). Regularly check whether the device is normal (test once every 100 hours);
4.Emergency treatment: If "runaway" occurs, immediately press the "emergency stop" button and close the main fuel valve at the same time. Do not approach the unit (to avoid injury from flying components). Do not restart until the fault is solved.

A: A machine that converts the energy from burning natural gas, propane, or biogas into electrical power. It's widely used for backup power (e.g., during grid outages for homes, small businesses) or off-grid use (e.g., remote cabins, construction sites where grid access is unavailable). Unlike portable gasoline generators, it's often more stable for long-term use.

A: Common fuel types include:
Natural gas: The most popular choice for home/business backup-usually connects directly to a property's existing natural gas line (no need to store fuel).
Propane (LPG): Stored in tanks, making it ideal for off-grid areas without natural gas access; also works well in cold weather (less likely to freeze than gasoline).
Biogas: A eco-friendly option, made from organic waste (e.g., farm manure, food scraps); often used in rural or sustainable projects.

A: Key advantages include:
Quieter operation: Produces less noise (around 50-70 decibels, similar to a conversation) vs. diesel generators (70-90 decibels).
Cleaner emissions: Releases fewer pollutants (like sulfur or particulate matter) into the air, better for the environment.
Lower fuel costs: Natural gas is typically cheaper per unit of energy than diesel, especially for long-term use.
Easier maintenance: No need to change diesel fuel filters as frequently, and gas engines have fewer moving parts that need servicing.

A: Follow these steps for safe startup:
a.Pre-check: Ensure the gas hose is properly connected (no kinks) and the gas supply valve is fully open. Check that the generator is placed on a flat, stable surface (to prevent tipping).
b.Power on: Turn the generator's main switch to the "On" position. If it has a fuel valve (common for propane models), open that too.
c.Start the engine: For manual start, pull the starter cord firmly (avoid jerky motions); for electric start, press the "Start" button (ensure the battery is charged first).
d.Warm-up: Let the generator run idle for 2-3 minutes-this helps the engine reach operating temperature and prevents damage when you connect devices.
e.Connect loads: Plug in appliances or use a transfer switch (for home backup) to connect to your electrical system.

A: It depends on the generator's power rating (in kW) and your home's energy needs:
Small generators (5-10kW): Perfect for powering "essentials" during outages-e.g., a refrigerator, a few lights, a TV, and a small heater/AC unit. They can't handle high-power devices like electric stoves or large HVAC systems.
Medium generators (10-20kW): Can cover most homes' basic needs plus some high-power devices (e.g., a washing machine or a mid-sized AC unit).
Large generators (20+kW): Designed for whole-house power, including heavy-duty appliances like electric ranges, central AC, and water heaters. Note: You'll need a professional to install a transfer switch to connect it safely to your home's electrical panel.

A: Typically 8-24 hours, but this depends on two key factors:
Gas supply: For natural gas models, it can run as long as the gas line is active (no fuel storage limits). For propane models, it depends on the tank size (e.g., a 20lb propane tank powers a 5kW generator for ~5-8 hours).
Generator size: Larger generators (15+kW) have better cooling systems and can run longer than small ones (5-8kW).
Important: Never run it non-stop for days-give it a 1-2 hour cooldown every 24 hours to prevent engine overheating and extend its lifespan.

A: Stick to this simple schedule to keep it in good shape:
Weekly (if in use): Check gas hoses for cracks, leaks, or loose connections-spray a soapy water solution on hoses; bubbles mean a leak (fix immediately). Wipe down the generator's exterior to remove dust and debris.
Monthly: Clean or replace the air filter (clogged filters reduce engine efficiency). For foam filters, wash with mild soap and let it dry completely before reinstalling; for paper filters, replace them if dirty.
Every 6 months (or 50 hours of use): Check the engine oil level (if it's a 4-stroke model)-add oil if it's below the "low" mark (use the oil type recommended in the manual).
Annually: Change the engine oil (and oil filter, if applicable), inspect spark plugs (clean or replace if they're dirty or worn), and check the battery (for electric start models)-charge it if it's low.

A: Proper storage prevents damage during downtime:
a.Shut down safely: Turn off the generator and close the gas supply valve. Let it cool down for 30 minutes (hot parts can cause burns).
b.Clean it: Wipe the exterior with a damp cloth, and remove any debris from the air intake and cooling vents.
c.Prepare the fuel system: For propane models, disconnect the gas hose and store the tank in a well-ventilated area (away from heat sources). For natural gas models, turn off the dedicated gas valve to the generator.
d.Store it: Keep it in a dry, cool place (e.g., a garage or shed) to avoid rain, snow, or extreme temperatures. Cover it with a breathable generator cover (not plastic, which traps moisture) to prevent dust buildup.
e.Monthly check: Even in storage, start the generator and let it run for 10-15 minutes once a month-this keeps the engine lubricated and the battery charged.

A: Absolutely not-this is a life-threatening risk! Gas generators produce carbon monoxide (CO), a colorless, odorless gas that can cause nausea, dizziness, or death within minutes if inhaled in high concentrations.
Always use it outdoors, at least 10 feet (3 meters) away from windows, doors, vents, or garages (CO can seep indoors even through small gaps). Never use it in a basement, garage, or enclosed porch-even with open doors/windows.
Pro tip: Install a CO detector in your home (near bedrooms) to alert you to dangerous levels.

A: Act fast to avoid fire or explosion:
a.Shut off the gas supply: Turn off the main gas valve (for natural gas) or the propane tank valve immediately.
b.Evacuate: Move everyone (and pets) at least 20 feet away from the generator-do not stay near the leak.
c.Avoid sparks: Do not turn on/off any lights, appliances, or electronics (including phones) near the leak-sparks can ignite gas.
d.Ventilate (if safe): If the leak is outdoors and you can do so without getting close, open nearby windows/doors to let gas escape.
e.Call for help: Contact a licensed gas technician to inspect and fix the leak. Do not use the generator until the issue is resolved.

A: No! The generator's engine and parts are hot when running-spilled gas can ignite instantly, causing a fire.
Always turn off the generator, let it cool down for 15-20 minutes (until it's safe to touch), then refuel. For propane models, disconnect the tank before replacing it.

A: A device that simulates electrical loads to test the performance, stability, and reliability of power systems such as generators, UPS (Uninterruptible Power Supply), batteries, and substations. It can replicate real-world load conditions with high precision.

A: Beyond verifying power output and preventing generator wet stacking (unburned fuel deposits), it also helps test system response under dynamic load changes, validate fuel efficiency of generators, and ensure compliance with industry standards for new or maintained power systems.

A: Resistive: Simulates purely resistive loads (e.g., heating elements) with a power factor (PF) of 1.
Reactive (Inductive/Capacitive): Adjusts PF (0.8 lagging to 0.9 leading) to mimic loads like motors (inductive) or capacitors (capacitive).
DC: Designed for testing DC power sources such as batteries, solar inverters, and DC UPS systems.
Electronic Programmable: Enables simulation of complex load profiles (e.g., sudden load spikes, cyclic changes) via software for advanced testing.

A: Yes. Many Load Banks are designed with weather-resistant enclosures for outdoor use (e.g., IP54 rating), while indoor models focus on compact size and quiet operation. Always check the product specification for environmental suitability.

A: kW (kilowatts, measures active power consumed by resistive loads) and kVA (kilovolt-amperes, measures apparent power for reactive or mixed loads). For resistive Load Banks, kW = kVA; for reactive models, kVA is higher than kW (depending on PF).

A: The ratio of active power (kW) to apparent power (kVA), indicating how efficiently electrical power is converted into useful work. A PF of 1 means perfect efficiency (pure resistive load), while a lower PF (e.g., 0.8) indicates more reactive power is used (common in industrial settings with motors).

A: Match or exceed the rated continuous power of the device under test (DUT) – never use a Load Bank with lower power than the DUT's rated output.
Reserve a 10-20% margin to accommodate temporary load surges (e.g., generator startup).
Ensure compatibility with the DUT's voltage (e.g., 230V single-phase, 400V three-phase) and phase configuration.

A: Continuous rating means the Load Bank can operate at that power level indefinitely (with proper cooling), while intermittent rating refers to short-term operation (e.g., 1 hour at 120% of rated power) before needing cooldown to prevent overheating.

A: a.Pre-test: Inspect cable connections (ensure tightness and correct polarity), check cooling fans/fluid systems, and confirm the DUT is in a ready state.
b.Startup: Turn on the Load Bank, then gradually increase the load (5-10% increments every 2-5 minutes) to avoid sudden stress on the DUT.
c.Monitoring: Record key parameters at each load level (see Question 2 below).
d.Rated Load Run: Operate at the DUT's rated load for 1-4 hours (depending on industry standards – e.g., 2 hours for generator acceptance testing).
e.Shutdown: Reduce the load to 0% gradually, turn off the Load Bank, then power down the DUT.

A: For all DUTs: Input/output voltage, current, frequency, power (kW/kVA), and PF. For generators specifically: Engine temperature (coolant, oil), exhaust temperature, fuel consumption rate, and battery voltage (for startup). For UPS: Transfer time (from AC to battery) and battery discharge duration.

A: Use cables rated for the Load Bank's maximum current (avoid undersized cables that cause overheating).
Ensure the test area is well-ventilated (resistive Load Banks generate heat) and free of flammable materials.
Operators must wear PPE: insulated gloves, safety glasses, and non-conductive shoes.
Never disconnect cables while the Load Bank is active (risk of arc flash).
Post warning signs (e.g., "High Voltage Testing in Progress") to restrict unauthorized access.

A: Immediately reduce the load to 0%, shut down the Load Bank, and check the cooling system (e.g., clean blocked air filters, verify fan operation). Allow the unit to cool to room temperature before restarting – do not operate an overheated Load Bank.

A: Weekly: Inspect external cables/connectors for damage (cracks, fraying) and clean dust from ventilation grilles.
Monthly: Tighten electrical connections (loose connections cause arcing) and check cooling system fluid levels (for liquid-cooled models).
Annually: Calibrate built-in meters (voltage, current, power) with a certified tool, replace worn fan belts (if applicable), and test safety interlocks (e.g., overheat shutdown).

A: Buy if: You need testing 4+ times per year, have long-term projects (e.g., data center UPS maintenance), or require a custom Load Bank (e.g., specific voltage/PF). Rent if: You need it for a one-time project (e.g., new generator acceptance), have limited storage space, or want to avoid maintenance costs for infrequent use.

A: Compatibility: Confirm power rating, voltage, phase, and load type (resistive/reactive) match your DUT.
Additional Features: Do you need data logging software (to record test results) or remote control (for safe operation from a distance)?
Logistics: Does the rental company provide delivery, setup, and pickup? (Load Banks can be heavy – 50-500 kg.)
Support: Ensure the company offers technical assistance (e.g., troubleshooting during testing) and a backup unit in case of failure.

A: Resistive Load Banks (with fewer moving parts) last 10-15 years with proper maintenance. Electronic programmable Load Banks have a shorter lifespan (7-10 years) due to aging of internal components (e.g., capacitors, semiconductors).

A: Rig safe diesel air compressor can not used in hazardous area, are commonly used in the safe area of the O&G Platform or Facility. The units require added safety features though not as stringent as units which are used in the Hazardous area zone 2.

A: T/T 50% advance payment, the balance 50% shall be paid before shipment.

A: For 8 Weeks

A: The lifting frame will be DNV 2.7-1 Standards , the certificate can be issued from LIoyd's Registering or DNV, and we can invite BV to do the third party inspections.

A: Electric Start, Spring Start, Hydraulic Start

A: 14 month warranty from the date equipment delivered or 2,000 hours warranty from the beginning time of operating the equipment, and the valid warranty depends on which comes earlier.

A: Rig safe diesel generator can not used in hazardous area, are commonly used in the safe area of the O&G Platform or Facility. The units require added safety features though not as stringent as units which are used in the Hazardous area zone 2.

A: T/T 50% advance payment, the balance 50% shall be paid before shipment.

A: For 8 Weeks

A: The lifting frame will be DNV 2.7-1 Standards , the certificate can be issued from LIoyd's Registering or DNV, and we can invite BV to do the third party inspections.

A: Electric Start, Spring Start, Pneumatic Start, Hydraulic Start

A: 14 month warranty from the date equipment delivered or 2,000 hours warranty from the beginning time of operating the equipment, and the valid warranty depends on which comes earlier.