FAQ
questions / answers
CHECKOUT FREQUENTLY ASKED QUESTIONS
Everything you need to know about Leipole products and how do they work for your application
Enclosure Cooling FAQ
What are the applicable scenarios and selection criteria for different fans?
- Axial fans: Suitable for large air volume and low pressure scenarios, such as general ventilation in electrical cabinets.
- Centrifugal fans: Suitable for high pressure environments, such as air delivery in ducts or cooling in enclosed equipment.
- Fans with filters: Used in environments with dust or particles, such as factory workshops or outdoor applications. When selecting a fan, you need to consider the equipment’s heat dissipation requirements, space size, dust concentration, and budget.
What are the air volume calculation methods and influencing factors?
Use the formula 
How to evaluate the relationship between noise level and installation location?
- Noise level test: Test the sound pressure level according to ISO 3744 standard.
- Installation optimization: Install the fan on the side of the equipment away from the operator, and add sound insulation to reduce transmission.
How to choose the EMC protection level?
Make sure the fan meets the IEC 61000-6-2 standard. When selecting, check whether the fan has a built-in filter or shielding structure. It is recommended to choose a higher level of anti-interference design for industrial environments.
What is the filtration efficiency and replacement cycle of the filter?
- Filtration efficiency: The efficiency of ordinary filters is 80%-90%, and the efficiency of high-efficiency filters can reach 99%.
- Replacement cycle: It is determined by the ambient particle concentration. It is recommended to check monthly and replace the filter in time when it is blocked.
How to control the coordinated work of multiple fans?
Use PWM speed control module or integrated thermostat to achieve automatic synchronous control, ensure consistent air volume and speed, and avoid airflow conflicts.
How to choose IP protection level?
Indoor equipment: IP34 and above;
Outdoor equipment: IP55 and above, to ensure dust and water resistance. Check the test report when purchasing to ensure that the certification is authentic and valid.
What are the life cycle and maintenance requirements?
The service life of the Leipole fans are normally over 30,000 hours upto 50,000 hours depending on the different types, and key components such as bearings need to be lubricated regularly; check the dust accumulation on the blades and the noise of the bearings to ensure normal operation.
Is variable frequency control optional? What is the function?
The fan can be equipped with a variable frequency module to adjust the speed through temperature or humidity signals to achieve more accurate energy saving effects.
How to accurately calculate cooling capacity?
According to the cabinet heat dissipation requirements, the formula is: Q=K×A×(ΔTio)
K: thermal conductivity; A: surface area; ΔTio: temperature difference between the inside and outside of the cabinet.
Special protection requirements for outdoor models?
UV protection treatment, and IP55 and above protection level are required. It is recommended to install low-temperature start protection in cold areas.
Maintenance cycle and key points for the air conditioners
Check the cleanliness of the condenser and the refrigerant pressure every quarter to ensure good ventilation; conduct a comprehensive inspection every six months.
How to calculate the energy efficiency ratio (EER)?
EER = Cooling capacity (BTU/h) ÷ Power input (W). The EER of high-efficiency products is usually above 3.0.
What is the control accuracy range for thermostat
The common control range is ±5℃, and some high-precision models can reach ±1℃.
What are the installation space requirements?
The distance between the radiator outlet and the obstacle must be greater than 30cm, and maintenance space must be reserved in the cabinet.
Multi-machine collaborative control solution?
Use a unified PLC or intelligent control system to achieve load balancing and standby machine switching.
any questions? ask us!!
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Enlocusre Heating/Thermostat/Hygrostat FAQ
Comparison of the advantages and disadvantages of PTC and fixed resistance heaters?
PTC: Power is self-adjusted with temperature changes, energy-saving and durable.
Fixed resistance: Stable output but high energy consumption, suitable for constant heating needs.
How to choose and calculate heating power?
According to the formula: P=1.2×V×ΔT
V: Cabinet volume; ΔT: Target temperature difference.
What are the restrictions on the installation location?
Avoid the heater near cables or flammable materials and maintain good ventilation.
Overtemperature protection function design?
Built-in bimetallic protection switch or thermal fuse to prevent overheating.
How to estimate the preheating time?
- According to the formula:
Where C: air specific heat; V: volume; P: heating power.
Factors affecting the life cycle?
Ambient humidity, power supply stability and number of thermal cycles.
What is the setting range of the built-in thermostat?
The common setting range is 0-60℃.
Switch capacity and contact resistance
The switch capacity is usually 10A to 16A, suitable for general equipment load.
The contact resistance should be less than 50mΩ, and regular inspection should be performed to ensure good contact.
Calibration cycle recommendation
Perform calibration every 1-2 years to ensure control accuracy, especially in scenarios with high environmental requirements.
Voltage Transformer FAQ
What are the key parameters for transformer selection?
Power capacity: Consider the load power plus a safety margin (generally 1.25 times).
Output voltage: Need to match the load equipment requirements.
Frequency: Confirm the input power frequency (50Hz or 60Hz).
Application scenarios of different insulation levels?
JBK2/JBK3: General industrial occasions;
JBK5: Medium high temperature environment;
JBK6/JBK7: Suitable for high temperature or harsh environment.
Efficiency level evaluation method
Measure the no-load loss and load loss according to the IEC 60076 standard, and the efficiency is generally greater than 95%.
Overload capacity range
The short-term overload capacity is 1.2 times the rated value. Continuous overload will shorten the service life.
Ambient temperature requirements
The standard operating temperature is -10℃ to +40℃. High or low temperature models are required for extreme environments.
Factors affecting service life
Temperature, voltage fluctuations and operating load have the greatest impact on life. Under normal maintenance, the service life is 15-20 years.
Busbar System FAQ
What is the rated current range of each connector?
The current range of the connector is generally 100A to 2000A. When selecting, confirm the actual load demand and safety margin.
What is the selection basis for different conductor materials
Copper: Excellent conductivity, suitable for high-load scenarios.
Tinned copper: good corrosion resistance, suitable for high humidity environments.
Installation torque requirements?
Follow the torque standards in the product specifications to avoid over-tightening to cause thread damage or over-loosening to cause poor contact.
Maintenance inspection cycle
Check whether the connection is loose every quarter, clean dust and corrosion, and perform a comprehensive thermal scan once a year.
Anti-corrosion treatment level?
Tin or nickel plating ensures long-term stability in humid or corrosive environments.
Enclosure Accessories FAQ
How to calculate the filling rate of the cable trough
According to the standard: the total cross-sectional area of the cable should be less than 40%-60% of the cross-sectional area of the cable trough, leaving space for heat dissipation and maintenance.
Evaluate the load-bearing capacity of the rail
DIN rails must comply with the EN 60715 standard, and steel or aluminum rails should be selected according to the actual total load weight.
Grounding system requirements and verification
The resistance of all grounding points should be less than 5Ω, and a grounding resistance tester should be used for regular inspection.
LED lamp selection basis?
Color temperature range: 4000K-6000K, providing comfortable working lighting.
Voltage compatibility: matching control voltage (12V/24V/220V).
What is the life of LED lamps in the distribution cabinet
LED lamps usually have a lifespan of 50,000 to 100,000 hours, depending on factors such as heat dissipation, power supply stability and ambient temperature.
What are the installation requirements for LED lamps
Make sure the lamps are firmly installed to avoid loosening due to vibration.
The lamp wiring must meet the IP protection level to prevent dust or moisture from intrusion.
There must be a certain amount of heat dissipation space around the lamp to avoid overheating.
Sealing system reliability verification?
Use IP protection level test to simulate spray and dust environment test to ensure that the sealing performance meets the design.
Material flame retardant grade requirements
The material should meet UL 94 V-0 or higher and be suitable for high temperature or fire risk environments.
Protection level test method?
Dust test: Use dust particles of standard particle size to simulate and detect whether the interior is intruded.
Waterproof test: Perform spray or immersion test in accordance with IEC 60529 standard to ensure that the design level is met.
What are the main criteria for selecting LED lamps?
Brightness (lumen output): Choose the appropriate lumen value according to the space inside the distribution cabinet or equipment to ensure sufficient lighting.
Power consumption: Choose LED lamps with a high lumen/watt ratio to improve energy efficiency.
Color temperature: It is recommended to choose 4000K (neutral white light) or 6000K (cold white light) to provide better visibility.
Mounting method: Choose magnetic, clip-on or fixed mounting methods according to the cabinet design.
Voltage compatibility: Make sure it matches the power supply of the cabinet (such as 12V, 24V, 230V).
What are the main functions of cable entry plates
Cable entry plates are used in high-density wiring scenarios to achieve fast cable entry, sealing protection and strain relief, while providing flexible cable management solutions.
How to choose the right cable entry plate
Choice criteria include:
-Number of cables:Make sure the entry plate supports the required number and size of cables.
– Protection level: Select the appropriate IP level (such as IP54/IP66/IP68) according to environmental conditions.
– Installation method:Determine whether it supports snap-on, threaded fixing or slide rail installation.
– Material requirements: Confirm whether high temperature resistant, corrosion resistant or flame retardant materials are required.
How to choose the protection level of the cable entry plate?
– IP54: Dust and splash proof, suitable for ordinary indoor environments.
– IP66: Prevents strong water flow intrusion, suitable for humid or dusty industrial environments.
– IP68: Completely waterproof, suitable for outdoor or diving environments.
Does the cable threading plate support tool-free installation?
Yes, some threading plates adopt a snap-on design, which can be quickly installed without additional tools, saving time and improving installation efficiency.
– Make sure that the cable fits tightly with the threading hole during installation to avoid air or water leakage.
– Check the sealing material regularly for aging or damage, and replace it if necessary.
What are the materials of threading plates? How to choose?
– Plastic (such as PA6 or TPU): Lightweight, suitable for general industrial environments.
– Metal (such as stainless steel or aluminum alloy): Suitable for occasions requiring high strength or corrosion resistance.
– Elastic material (such as silicone): Provides better sealing and tensile properties.
How long is the life of the threading plate?
The life of the threading plate depends on the material, the use environment and the installation situation. In a normal industrial environment, a high-quality threading plate can be used for more than 10 years.
What precautions should be taken when installing the threading plate?
– Make sure that the threading plate matches the size of the cabinet opening to avoid poor sealing.
– Do not over-compress the sealing material during installation to avoid affecting the sealing performance.
– Use the recommended installation torque value to avoid damage to the fixing parts or threads.
What are the requirements for the installation location of the cable threading plate?
– Avoid installing in areas that are susceptible to external impact or severe vibration.
– In a humid environment, the installation location should be slightly above the water level to avoid long-term immersion in water.
– Ensure that there is enough space around to facilitate later maintenance and cable replacement.
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