Double 85 Constant Temperature And Humidity Reliability Environmental Test (THB)
First, high temperature and humidity test
WHTOL (Wet High Temperature Operating Life) is a common environmental stress acceleration test, usually 85℃ and 85% relative humidity, which is generally carried out in accordance with the standard IEC 60068-2-67-2019. The test conditions are shown in the chart.
Second, the test principle
"Double 85 test" is one of the reliability environmental tests, mainly used for constant temperature and humidity box, that is, the temperature of the box is set to 85℃, the relative humidity is set to 85%RH conditions, to accelerate the aging of the test product. Although the test process is simple, the test is an important method to evaluate many characteristics of the test product, so it has become an indispensable reliability environmental test condition in various industries.
After aging the product under the condition of 85℃/85%RH, compare the performance changes of the product before and after aging, such as the photoelectric performance parameters of the lamp, the mechanical properties of the material, yellow index, etc., the smaller the difference, the better, so as to test the heat and moisture resistance of the product.
The product may have thermal failure when working in a continuous high temperature environment, and some moisture sensitive devices will fail in a high humidity environment. The dual 85 test can test the thermal stress generated by the product under high humidity and its ability to resist long-term moisture penetration. For example, the frequent failure of various products in the humid weather period in the south is mainly due to the poor temperature and humidity resistance of the products.
3. Experimental factors
In the LED lighting industry, many manufacturers have used the double 85 test results as an important means to judge the quality of lamps. Various possible reasons why LED lamps fail the dual 85 test are:
1. Lamp power supply: poor heat resistance of shell, danger of short circuit in circuit, failure of protection mechanism, etc.
2. Lamp structure: unreasonable design of heat dissipation body, installation problems, materials are not resistant to high temperature.
3. Lamp light source: poor moisture resistance, packaging adhesive aging, high temperature resistance.
If you encounter a special use environment, such as the working environment temperature is severe, you need to test its high and low temperature resistance, the test method can refer to the high and low temperature test project.
4. Serve customers
01. Customer group
LED lighting factory, LED power plant, LED packaging factory
02. Means of detection
Constant temperature and humidity test chamber
03. Reference standards
Constant temperature and humidity tests for electrical and electronic products -- Environmental testing -- Part 2: Test methods -- Test Cab: Constant temperature and humidity test GB/T 2423.3-2006.
04. Service content
4.1 Refer to the standard, conduct double 85 test on the product, and provide the third party's test results report.
4.2 Provide the analysis and improvement plan of the product through the double 85 test.
Reliability Test
AEC-Q102 Test Certification Fixed Damp Heat with Humidity Cycling (FMG), LED lamp reliability test method (GB/T 33721-2017), Component screening Ammonia test CAF test, Flame retardant grade Cyclic corrosion test (CCT), Mechanical shock test, High pressure cooker test (PCT), Highly Accelerated Stress Testing (HAST), High and low temperature and humidity test (THB), Hydrogen sulfide test (H2S), Liquid tank thermal shock test (TMSK), Component humidity sensitive grade test (MSL), Screening for high reliability use Hot flash test + acoustic sweep screening for high reliability use (MSL+SAT), LED luminaires reliability test scheme, Vibration test (VVF), Temperature cycle/thermal shock test (TC/TS), LED red Ink test UV aging test, LED light source anti-vulcanization test, Double 85 constant temperature and humidity reliability environmental test (THB), Salt spray test check.
Burn-in Oven
Burn-in is an electrical stress test that employs voltage and temperature to accelerate the electrical failure of a device. Burn-in essentially simulates the operating life of the device, since the electrical excitation applied during burn-in may mirror the worst-case bias that the device will be subjected to in the course of its useable life. Depending on the burn-in duration used, the reliability information obtained may pertain to the device's early life or its wear-out. Burn-in may be used as a reliability monitor or as a production screen to weed out potential infant mortalities from the lot.
Burn-in is usually done at 125 deg C, with electrical excitation applied to the samples. The burn-in process is facilitated by using burn-in boards (see Fig. 1) where the samples are loaded. These burn-in boards are then inserted into the burn-in oven (see Fig. 2), which supplies the necessary voltages to the samples while maintaining the oven temperature at 125 deg C. The electrical bias applied may either be static or dynamic, depending on the failure mechanism being accelerated.
Figure 1. Photo of Bare and Socket-populated Burn-in Boards
The operating life cycle distribution of a population of devices may be modeled as a bath tub curve, if the failures are plotted on the y-axis against the operating life in the x-axis. The bath tub curve shows that the highest failure rates experienced by a population of devices occur during the early stage of the life cycle, or early life, and during the wear-out period of the life cycle. Between the early life and wear-out stages is a long period wherein the devices fail very sparingly.
Figure 2. Burn-in ovens
Early life failure (ELF) monitor burn-in, as the name implies, is performed to screen out potential early life failures. It is conducted for a duration of 168 hours or less, and normally for only 48 hours. Electrical failures after ELF monitor burn-in are known as early life failures or infant mortality, which means that these units will fail prematurely if they were used in their normal operation.
High Temperature Operating Life (HTOL) Test is the opposite of ELF monitor burn-in, testing the reliability of the samples in their wear-out phase. HTOL is conducted for a duration of 1000 hours, with intermediate read points at 168 H and 500 H.
Although the electrical excitation applied to the samples are often defined in terms of voltages, failure mechanisms accelerated by current (such as electromigration) and electric fields (such as dielectric rupture) are understandably accelerated by burn-in as well.
High Temperature Furnace Inspection Index
What is the high temperature furnace test standard? What metrics are tested? How long is the detection cycle? Which items are tested?
Test items (reference) :
Temperature uniformity test, system accuracy test, temperature, system accuracy, temperature uniformity, high temperature furnace verification and calibration, high temperature furnace (tube furnace) verification and calibration, box resistance furnace (high temperature furnace, heat treatment furnace) verification and calibration, high temperature furnace (box resistance furnace, dry furnace, heat treatment furnace) verification and calibration, silica
List of testing standards:
1, NCS/ CJ M61; SAE AMS 2750; JJF1376 High temperature furnace calibration specification NCS/ CJ M61, high temperature furnace calibration method SAE AMS 2750E, box type resistance furnace calibration specification JJF1376
2, AMS 2750F High temperature measurement AMS 2750F
3, GB 25576-2010 Food safety national standard Food additive silica (high temperature furnace method)
4, JJF 1184 thermocouple verification furnace temperature field test technical specification
5, AMS 2750E high temperature measurement AMS 2750E
6, AMS 2750F high temperature determination method 3.5
7, AMS 2750G high temperature measurement AMS 2750G
8, AMS 2750E high temperature determination method 1
9. JJF 1376; AMS 2750; JJG 276 Calibration specification for box type resistance furnace JJF 1376, high temperature measurement method AMS 2750E, high temperature creep, durable strength testing machine verification regulation JJG 276
10, JJF 1376 box type resistance furnace calibration specification
11, GB/T 9452-2012 heat treatment furnace effective heating zone determination method 1
12. SAE AMS 2750 high-temperature calibration method F
Lab Companion-Rapid Temperature Cycling Test Chamber
Introduction of Lab Companion
With over 20 years of experience, Lab Companion is a world class manufacturer of environmental chambers and an accomplished supplier of turn-key test systems and equipment. All our chambers build on Lab Companion’s reputation for long life and exceptional reliability.
With a scope of design, manufacture and service, Lab Companion has established a quality management system that complies with the International Quality System Standard ISO 9001:2008. Lab Companion’s equipment calibration program is accredited to the International Standard ISO 17025 and the American National Standard ANSI/NCSL-Z-540-1 by A2LA. A2LA is a full member and signatory of the International Laboratory Accreditation Cooperation (ILAC), the Asia Pacific Laboratory Accreditation (APLAC) and the European Cooperation for Accreditation (EA).
Lab Companion’s SE-Series Environmental Test Chambers offer a significantly enhanced airflow system, which provides better gradients and improved product temperature change rates. These chambers utilize Thermotron’s flagship 8800 Programmer/Controller featuring a high resolution 12.1” flat panel display with touch screen user interface, expanded capabilities to graph, data log, edit, access on-screen help, and long term hard drive data storage.
Not only do we offer the highest quality products, we also provide ongoing support designed to keep you up and running long after the initial sale. We provide factory direct local service with an extensive inventory of the parts you might need.
Performance
Temperature range: -70°C to +180°C
Performance: With 23 Kg aluminum load (IEC60068-3-5), the rising rate from +85°C to -40°C is 15℃/min; the cooling rate from -40°C to +85°C is15℃/min too.
Temperature control：± 1°C Dry bulb temperatures from control point after stabilization at the control sensor
Performance is based on an ambient condition of 75°F (23.9°C) and 50% RH
Cooling/Heating Performance based on measurement at the control sensor in the supply air stream
Constructure
Interior
Nonmagnetic Series 300 stainless steel with a high nickel content
Internal seams heliarc welded for hermetic sealing of the liner
Corners and seams designed to allow for expansion and contraction under the temperature extremes encountered
Condensate drain located in the liner floor and under the conditioning plenum
Chamber base is fully welded
“Ultra-Lite” non-settling fiberglass insulation
One adjustable interior stainless steel shelf is standard
Exterior
Die-formed treated sheet steel
Metal access covers provided for easy opening doors to electrical components
Finish water-based, air dry lacquer, sprayed over a cleaned and primed surface
Easy lift-off hinged access doors for servicing the refrigeration system
One 12.5 cm diameter access port with interior weld and removable insulating plug mounted in right hand side wall accessories on hinged door for easy access
Features
Chamber Operation clearly displays helpful run-time information
Graphing Screen offers expanded capabilities, enhanced programming and reporting
System Status displays crucial refrigeration system parameters
Program Entry makes it easy to load, view and edit profiles
Set Up quick-step wizards make profile entry easy
Pop-up Refrigeration Charts for handy reference
Therm-Alarm® provides over & under temperature alarm protection
Activity Log Screen provides comprehensive equipment history
Web Server allows internet access to equipment via Ethernet
User-Friendly Pop-up Key Pad makes data entry quick and easy
Includes:
- Four USB Ports-two External & two Internal
- Ethernet
- RS-232
Technical specifications
1-4 independently programmable channels
Measuring Accuracy: 0.25% of span typical
Selectable °C or °F temperature scale
12.1” (30 cm) color flat panel touch screen display
Resolution: 0.1°C, 0.1%RH, 0.01 for other linear applications
Real time clock included
Sample Rate: Process variable sampled every 0.1 seconds
Proportional Band: Programmable 1.0° to 300°
Control Method: Digital
Intervals: Unlimited
Interval Resolution: 1 sec to 99 hrs,59 min with 1 second resolution
- RS-232
- 10+ Years Data Storage
- Product Temperature Control
- Event Relay Board
Operating Modes: Automatic or Manual
Program Storage: Unlimited
Program Loops:
- Up to 64 loops per program
Loops can be repeated up to 9,999 times program
- Up to 64 nested loops are allowed per
The Relationship Between the Altitude of the Standard Atmosphere and Air Temperature and Pressure
The standard atmosphere referred to here refers to the "1964, ICAO Standard atmosphere" adopted by the International Civil Aviation Organization. Below an altitude of 32 km, it is the same as "1976, U.S. standard atmosphere". Changes in air temperature near the surface (below 32 km) are:
Ground: The air temperature is 15.0℃, the air pressure P=1013.25mb= 0.101325MPa
Temperature change rate from ground to elevation 11 km: -6.5 ℃/ km
On the 11km interface:
The air temperature is -56.5 ℃ and the air pressure P=226.32mb
Temperature change rate at elevations of 11-20 km: 0.0℃/ km
Temperature change rate at altitude 20-32 km: +1.0/ km
The following table lists the temperature and pressure values of the standard atmosphere at different altitudes. In the table, "gpm" is the altitude meter, and its negative sign represents the altitude
Gpm
Temperature℃
Atmospheric pressure(mb)
Gpm
Temperature℃
Atmospheric pressure(mb)
Gpm
Temperature℃
Atmospheric pressure(mb)
-400
17.6
1062.2
4800
-16.2
554.8
10000
-50.0
264.4
-200
16.3
1037.5
5000
-17.5
540.2
10200
-51.3
256.4
0
15.0
1013.3
5200
-18.8
525.9
10400
-52.6
248.6
200
13.7
989.5
5400
-20.1
511.9
10600
-53.9
241.0
400
12.4
966.1
5600
-21.4
498.3
10800
-55.2
233.6
600
11.1
943.2
5800
-22.7
484.9
11000
-56.5
226.3
800
9.8
920.8
6000
-24.0
471.8
11500
-56.5
209.2
1000
8.5
898.7
6200
-25.3
459.0
12000
-56.5
193.3
1200
7.2
877.2
6400
-26.6
446.5
12500
-56.5
178.7
1400
5.9
856.0
6600
-27.9
434.3
13000
-56.5
165.1
1600
4.6
835.2
6800
-29.2
422.3
13500
-56.5
152.6
1800
3.3
814.9
7000
-30.5
410.6
14000
-56.5
141.0
2000
2.0
795.0
7200
-31.8
399.2
14500
-56.5
130.3
2200
0.7
775.4
7400
-33.1
388.0
15000
-56.5
120.5
2400
-0.6
756.3
7600
-34.4
377.1
15500
-56.5
111.3
2600
-1.9
737.5
7800
-35.7
366.4
16000
-56.5
102.9
2800
-3.2
719.1
8000
-37.0
356.0
17000
-56.5
87.9
3000
-4.5
701.1
8200
-38.3
345.8
18000
-56.5
75.0
3200
-5.8
683.4
8400
-39.6
335.9
19000
-56.5
64.1
3400
-7.1
666.2
8600
-40.9
326.2
20000
-56.5
54.7
3600
-8.4
649.2
8800
-42.2
316.7
22000
-54.5
40.0
3800
-9.7
632.6
9000
-43.5
307.4
24000
-52.5
29.3
4000
-11.0
616.4
9200
-44.8
298.4
26000
-50.5
21.5
4200
-12.3
600.5
9400
-46.1
289.6
28000
-48.5
15.9
4400
-13.6
584.9
9600
-47.4
281.0
30000
-46.5
11.7
4600
-14.9
569.7
9800
-48.7
272.6
32000
-44.5
8.7
Unit conversion relation
1mbar=100Pa=0.1KPa=0.0001 Mpa
1ft=0.3048m=304.8mm
55000ft*0.3048=16764m
Lab Companion focused on the production of reliability environmental test equipment for 19 years, successfully helped 18,000 enterprises to test the reliability and environmental performance of products and materials.
The main products are: high temperature test chamber, high and low temperature and humidity test chamber, walk-in environmental test chamber, rapid temperature cycling test chamber, thermal shock test chamber, high and low temperature low pressure test chamber, vibration of the comprehensive chamber and other test equipment manufacturing solutions to help enterprises R & D bigger and stronger!
If you need to know more about the products of the environmental test chamber, you can search the official website of "Lab Companion", feel free to contact us for consultation, we can provide you with one-on-one professional technical advice and guidance.
ESS Environmental Stress Screening Test Chamber
The full horizontal air supply system from right to left with large air volume is adopted, so that all specimen cars and specimens on the test are charged and divided, and the heat exchange is completed evenly and quickly.
◆ The utilization rate of test space is as high as 90%
◆ The special design of "uniform horizontal air flow system" of ESS equipment is the patent of Ring measurement.
Patent number: 6272767
◆ Equipped with air volume regulation system
◆ Unique turbine circulator (air volume can reach 3000~ 8000CFM)
◆ Floor type structure, convenient loading and unloading of tested products
◆ According to the special structure of the tested product, the box suitable for installation is used
◆ The control system and refrigeration system can be separated from the box, which is easy to plan or do noise reduction in the laboratory
◆ Adopt cold balance temperature control, more energy saving
◆ Equipment adopts the world's top brand Sporlan refrigeration valve with high reliability and long life
◆ The refrigeration system of the equipment adopts thickened copper pipe
◆ All the strong electric parts are made of high temperature resistant wires, which has higher safety
Reliability Testing Acceleration Testing
Most semiconductor devices have lifetimes that extend over many years at normal use. However, we cannot wait years to study a device; we have to increase the applied stress. Applied stresses enhance or accelerate potential fail mechanisms, help identify the root cause, and help labcompanion take actions to prevent the failure mode.
In semiconductor devices, some common accelerants are temperature, humidity, voltage, and current. In most cases, the accelerated testing does not change the physics of the failure, but it does shift the time for observation. The shift between accelerated and use condition is known as ‘derating.’
Highly accelerated testing is a key part of JEDEC based qualification tests. The tests below reflect highly accelerated conditions based on JEDEC spec JESD47. If the product passes these tests, the devices are acceptable for most use cases.
Temperature Cycle
Per the JESD22-A104 standard, temperature cycling (TC) subjects the units to extreme high and low temperatures transitions between the two. The test is performed by cycling the unit's exposure to these conditions for a predetermined number of cycles.
High Temperature Operating Life (HTOL)
HTOL is used to determine the reliability of a device at high temperature while under operating conditions. The test is usually run over an extended period of time according to the JESD22-A108 standard.
Temperature Humidity Bias/Biased Highly Accelerated Stress Test (BHAST)
According to the JESD22-A110 standard, THB and BHAST subject a device to high temperature and high humidity conditions while under a voltage bias with the goal of accelerating corrosion within the device. THB and BHAST serve the same purpose, but BHAST conditions and testing procedures enable the reliability team to test much faster than THB.
Autoclave/Unbiased HAST
Autoclave and Unbiased HAST determine the reliability of a device under high temperature and high humidity conditions. Like THB and BHAST, it is performed to accelerate corrosion. Unlike those tests, however, the units are not stressed under a bias.
High Temperature Storage
HTS (also called Bake or HTSL) serves to determine long-term reliability of a device under high temperatures. Unlike HTOL, the device is not under operating conditions for the duration of the test.
Electrostatic Discharge (ESD)
Static charge is an unbalanced electrical charge at rest. Typically, it is created by insulator surfaces rubbing together or pulling apart; one surface gains electrons, while the other surface loses electrons. The result is an unbalanced electrical condition known as static charge.
When a static charge moves from one surface to another, it becomes Electrostatic Discharge (ESD) and moves between the two surfaces in a form of a miniature lightning bolt.
When a static charge moves, it becomes a current that can damage or destroy gate oxide, metal layers, and junctions.
JEDEC tests ESD in two different ways:
1. Human Body Mode (HBM)
A component level stress developed to simulate the action of a human body discharging accumulated static charge through a device to ground.
2. Charged Device Model (CDM)
A component level stress that simulates charging and discharging events that occur in production equipment and processes, per the JEDEC JESD22-C101 specification.
Lab Ovens and Lab Furnaces
Design with sample protection as the primary goal
Lab ovens are an indispensable utility for your daily workflow, from simple glassware drying to very complex temperature-controlled heating applications. Our portfolio of heating and drying ovens provides temperature stability and reproducibility for all your application needs. LABCOMPANION heating and drying ovens are designed with sample protection as a primary goal, contributing to superior efficiency, safety and ease of use.
Understand natural and mechanical convection
Principle of natural convection:
In a natural convection oven, hot air flows from bottom to bottom, so that the temperature is evenly distributed (see figure above). No fan actively blows the air inside the box. The advantage of this technology is ultra-low air turbulence, which allows for mild drying and heating.
Principle of mechanical convection:
In a mechanical convection (forced air drive) oven, an integrated fan actively drives the air inside the oven to achieve uniform temperature distribution throughout the chamber (see figure above). A major advantage is excellent temperature uniformity, which enables reproducible results in applications such as material testing, as well as for drying solutions with very demanding temperature requirements. Another advantage is that the drying rate is much faster than natural convection. After opening the door, the temperature in the mechanical convection oven will be restored to the set temperature level more quickly.
Conversion Between Accelerated Aging of Xenon Lamp Aging Test Chamber And Outdoor Aging
Generally speaking, it is difficult to have a detailed positioning and conversion formula for the conversion between accelerated aging of xenon lamp aging test chamber and outdoor aging. The biggest problem is the variability and complexity of the outdoor environment. The variables that determine the relationship between xenon lamp aging test chamber exposure and outdoor exposure include:
1. Geographical latitude of outdoor aging exposure sites (closer to the equator means more UV).
2. Altitude (Higher altitude means more UV).
3. Local geographical characteristics, such as the wind can dry the test sample or close to water will produce condensation.
4. Random changes in climate from year to year can lead to a 2:1 change in aging at the same location.
5. Seasonal changes (e.g., winter exposure may be 1/7 of summer exposure).
6. Direction of the sample (5° south vs. vertical facing north)
7. Sample insulation (outdoor samples with insulated backing age 50% faster than uninsulated samples).
8. Working cycle of xenon lamp aging box (light time and wet time).
9. The working temperature of the test chamber (the higher the temperature, the faster the aging).
10. Test the uniqueness of the sample.
11. Spectral Intensity Distribution (SPD) of laboratory light sources
Objectively speaking, accelerated aging and outdoor aging have no convertibility, one is a variable, one is a fixed value, the only thing to do is to obtain a relative value, rather than an absolute value. Of course, it is not to say that relative values have no effect; on the contrary, relative values can also be very effective. For example, you will find that a slight change in design may double the durability of standard materials. Or you may find the same looking material from multiple suppliers, some of which age quickly, most of which take a moderate amount of time to age, and a smaller amount that ages after longer exposure. Or you may find that less expensive designs have the same durability against standard materials that have satisfactory performance over actual service life, such as 5 years.
How Long Is the Xenon Lamp Weathering Test Chamber Equivalent to a Year of Outdoor Exposure?
How long is the xenon lamp weathering test chamber equivalent to a year of outdoor exposure? How to test out its durability? This is a technical problem, but also a lot of users are concerned about the problem. Today's engineers of Lab Companion are going to explain this problem.
This problem looks very simple, in fact, it is a complex problem.We can not just get a simple number, let this number and the test time of the xenon lamp weathering test chamber to multiply, so as to get the outdoor exposure time, nor is the quality of our xenon lamp weathering test chamber not good enough! No matter how good the quality of the xenon lamp weathering test chamber is, how advanced it is, it is still impossible to find only a number to solve the problem. The most important thing is that the outdoor exposure environment is complex and changeable, affected by many factors, what are the specific?
1. The influence of geographical latitude
2. The influence of altitude
3. The influence of geographical environment when testing, such as wind speed.
4. The impact of the season, winter and summer will be different, summer exposure is 7 times the damage of winter exposure.
5. Direction of the test sample
6. Is the sample insulated or uninsulated? Samples placed on insulators will generally age much faster than those not placed on insulators.
7. Test cycle of xenon lamp weathering test chamber
8. Xenon lamp weathering test chamber operating temperature, the higher the temperature, the faster the aging
9. Testing of special materials
10. Spectrum distribution in the laboratory
Hydrogen Fuel Cell Environmental Simulation Test Scheme
At present, the economic development model based on the consumption of non-renewable energy based on coal, oil and natural gas has led to increasingly prominent environmental pollution and greenhouse effect. In order to achieve sustainable development of human beings, a harmonious relationship between man and nature has been established. The development of sustainable green energy has become a subject of great concern in the world.
As a clean energy that can store waste energy and promote the transformation from traditional fossil energy to green energy, hydrogen energy has an energy density (140MJ/kg) that is 3 times that of oil and 4.5 times that of coal, and is regarded as a subversive technological direction of the future energy revolution. Hydrogen fuel cell is the key carrier to realize the conversion of hydrogen energy into electric energy utilization. After the goal of carbon neutrality and carbon peak "double carbon" was proposed, it has gained new attention in basic research and industrial application.
Hydrogen fuel cell environmental test chamber of Lab Companion meets: fuel cell stack and module: 1W~8KW, fuel cell engine :30KW~150KW Low temperature cold start test: -40~0℃ Low temperature storage test: -40~0℃ High temperature storage test: 0~100℃.
Introduction of hydrogen fuel cell environmental test chamber
The product adopts functional modular design, explosion-proof and anti-static, and meets the relevant test standards. The product has the characteristics of high reliability and comprehensive safety warning, which is suitable for the test of the reactor and fuel cell engine system. Applicable power up to 150KW fuel cell system, low temperature test (storage, starting, performance), high temperature test (storage, starting, performance), wet heat test (high temperature and humidity
Safety parts:
1. Explosion-proof camera: real-time record the complete test situation in the box, easy to optimize or adjust in time.
2. Uv flame detector: high-speed, accurate and intelligent fire detector, accurate identification of flame signals.
3. Emergency air exhaust outlet: exhaust the toxic combustible gas in the box to ensure the safety of the test.
4. Gas detection and alarm system: intelligent and rapid identification of combustible gas, automatically generate alarm signals.
5. Double parallel single-pole screw mechanism cold unit: It has the characteristics of classification function, large power, small footprint and so on.
6. Gas precooling system: quickly control the gas temperature requirements to ensure cold start conditions.
7. Stack test rack: stainless steel stack test rack, equipped with water cooling auxiliary cooling system.
Fuel cell system test project
Fuel cell system test project
Fuel cell engine air tightness test
Power generation system quality
The volume of the battery stack
Insulation resistance detection
Starting characteristic test
Rated power starting test
Steady-state characteristic test
Rated power characteristic test
Peak power characteristic test
Dynamic response characteristic test
High temperature adaptability test
Fuel cell engine system performance test
Vibration resistance test
Low temperature adaptability test
Starting test (low temperature)
Power generation performance test
Shutdown test
Low temperature storage test
Low temperature start-up and operation procedures
/
/
Reactor and module test items
Reactor and module test items
Routine inspection
Gas leakage test
Normal operation test
Allow working pressure test
Pressure test of cooling system
Gas channeling test
Impact and vibration resistance tests
Electrical overload test
Dielectric strength test
Pressure difference test
Flammable gas concentration test
Overpressure test
Hydrogen leakage test
Freezing/thawing cycle test
High temperature storage test
Air tightness test
Fuel starvation test
Oxygen/oxidizer deficiency test
Short-circuit test
Lack of cooling/impaired cooling test
Penetration monitoring system test
Ground test
Starting test
Power generation performance test
Shutdown test
Low temperature storage test
Low temperature starting test
Product applicable standards:
GB/T 10592-2008 High and low temperature test chamber technical conditions
GB/T 10586-2006 Humidity test chamber technical conditions
GB/T31467.3-2015
GB/T31485-2015
GB/T2423.1-2208
GB/T2423.2-2008
GB/T2423.3-2006
GB/T2523.4-2008
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