（The picture is for reference only; the actual product shall prevail）

Table of Contents

Preface --------------------------------------------------------------------------------------------------3

Main Technical Specifications ---------------------------------------------------------------------3

Parameters and Performance Data ------------------------------------------------------------- 5

Compliant Test Standards --------------------------------------------------------------------------6

Light Irradiation Unit ----------------------------------------------------------------------------------6

Facility Parameters ------------------------------------------------------------------------------------7

Controller and Programs -----------------------------------------------------------------------------8

Cabinet Craftsmanship -------------------------------------------------------------------------------9

Refrigeration and Heating Design ----------------------------------------------------------------11

Main Component List --------------------------------------------------------------------------------13

Installation and Services ----------------------------------------------------------------------------13

Preface

Sunlight simulation testing is an important means for screening formulas and optimizing product compositions in scientific research and production, as well as a key part of product quality inspection. Standards for materials used in near-outdoor applications, such as coatings, plastics, aluminum-plastic panels, photovoltaic modules, automotive safety glass, and central control screens, all require weather resistance testing. Sunlight simulation testing mainly simulates the primary factors causing material aging—sunlight and moisture. It can also replicate the effects of sunlight irradiation and use condensed moisture to simulate rain and dew. The tested materials are placed in a cyclic program of alternating light and moisture at a specific temperature for testing. In just a few days or weeks, it can reproduce the damage that would occur outdoors over months or even years. Artificial accelerated aging test data can help select new materials, improve existing materials, and evaluate how changes in formulas affect product durability.

Main Technical Specifications

1.1.1Cabinet：

• Cabinet color: Blue-gray
• Internal cabinet dimensions (approx.): W1000mm × D1000mm × H1000
• External cabinet dimensions (approx.): W1200mm × D1900mm × H2555mm (height excluding lamp box: 1955mm)
• Rear air outlet with double-deflection air grilles on the back wall
• Single-opening door with hinges on the left
• Heatable observation window, size: W200xH300mm
• Instrument operation panel located at the front of the machine

1.1.2 Refrigeration System

• Cooling method of refrigeration unit: Air-cooled
• Compressor: Hermetic refrigeration compressor
• Refrigerant: DuPont R404A

1.2 Heating System

• Heater type: Nickel-chromium alloy electric heating wire heater
• Heater control method: Contactless equal-cycle pulse width modulation, SSR (Solid State Relay)

1.3 Humidification System

Adopts boiler humidification combined with a stainless steel sheathed humidifier. The pipelines of the humidification system are separated from the control circuit board to avoid malfunctions caused by water leakage in the humidification pipelines and improve safety.

1.4 Air Circulation System

•  The air circulation system adopts forced ventilation and circulation. Multiple high-power motors drive centrifugal fans to force air circulation, achieving excellent temperature uniformity. The circulation air duct consists of a built-in air conditioning compartment, stainless steel centrifugal fan, heater, evaporator, return air grille, adjustable louvers, etc.

1.5 Instruments and Meters

• Touch screen: 7-inch, closed-loop irradiance control systemInterfaces: RS485, USB
• Temperature control: Sheathed platinum resistance PT100
• Irradiation intensity: Closed-loop control

1.6Electrical Protection

• Light irradiation system fault alarm (alarm for faults in the light irradiation unit)
• Phase sequence protector (phase loss alarm)
• Leakage protector (leakage circuit breaker for power supply)
• Compressor overpressure protection switch (prevents excessive or insufficient compressor pressure)
• Compressor overheating protection switch (prevents excessive compressor temperature)
• Compressor overcurrent protection switch (prevents excessive compressor current)
• Overvoltage/undervoltage protection switch (prevents excessive or insufficient equipment voltage)
• Air switch (prevents equipment overcurrent or short circuit)
• Buzzer (audible alarm for equipment faults)
• Grounding protection terminal (prevents static electricity generation in the equipment)
• Motor overheating protection (prevents excessive motor temperature), etc.

1.7Others

• Black standard sensor
• Electronic version of installation drawings, operation manual, and equipment maintenance manual
• 1-year quality guarantee and rapid after-sales service response

Parameters and Performance Data

Sunlight Simulation Lighting Parameters
Effective radiation area	800x700mm
Irradiance intensity Spectral range	600-1200W/m² 280-3000nm
Light source grade	Spectral matching: Class B Uniformity: Class B Stability: Class A	In accordance with the spectral energy distribution requirements in IEC 60904-9 for solar simulator performance
Temperature range	-30℃--100℃ -20℃--100℃	@ No light @ With light
Temperature uniformity	≥±2℃	@ No light
Rate of temperature change: heating rate cooling rate ≥2℃/min ≥2℃/min
Humidity range	20%RH -- 80%RH
Humidity fluctuation	≤±3%R.H. (when humidity ＞75%R.H.) ≤±5%R.H. (when humidity ≤75%R.H.)	In accordance with IEC 60068-3-5 standard
Temperature-humidity range chart

Test Standard Compliance

DIN 75220 Aging of automotive components in sunlight simulation devices;

Outdoor - Daytime

Indoor 1 - Daytime

Indoor 2 - Daytime

Indoor/Outdoor - Nighttime

3.Lighting Unit

Light Source

Each NSC4000 radiation unit is equipped with a 4000W high-performance metal halide lamp. Corresponding optical filters ensure that the measured spectrum meets the correct spectral distribution specified in relevant standards by filtering out all unnecessary radiation. The lampshade features a four-sided perforated structure for excellent heat dissipation. Each lamp is equipped with a bracket suitable for on-site installation, facilitating user disassembly and daily maintenance.

Spectrum

NEPS Power Module

The lamp power supply NEPS4000 offers stable power output and compensates for all electrical factors that may affect lamp performance, such as voltage fluctuations, individual lamp aging (voltage and current), and electrical aging. It provides high irradiance modulation accuracy (<±1%), delivering near-steady natural solar light with excellent stability and repeatability.

Facility Parameters

Controller and Programs

The controller adopts computer technology and advanced PID control methods to measure and perform closed-loop control of temperature, humidity, and irradiance intensity in the test chamber, with independently developed control logic parameters. The display and control interface are intuitive and clear, featuring a touch-sensitive selection menu for easy operation and stable, reliable performance. Flexible program control provides users with high-end products with stable performance and high cost-effectiveness.

5.Cabinet Technology

Internal Cabinet

The inner liner is made of SUS304 stainless steel with demagnetization treatment, offering high corrosion resistance. All internal cabinet seams are welded using helium arc welding to reduce moisture and air penetration within the environmental chamber's insulation layer.

External Cabinet

The outer cabinet is made of 1.2mm-thick Q235 cold-rolled steel sheet, subjected to grinding, polishing, phosphating (to enhance metal corrosion resistance and paint adhesion), and high-temperature powder coating (large chrysanthemum pattern) to prevent rust and corrosion.

Thermal Insulation Layer

The insulation layer is 100mm-thick ultra-fine glass wool (commonly referred to as asbestos), a general term for natural fibrous silicate minerals, including 6 types in 2 categories (e.g., serpentine asbestos, amphibole asbestos, actinolite asbestos, anthophyllite asbestos, amosite, tremolite asbestos). Asbestos consists of fiber bundles, which are composed of long, thin, separable fibers. It exhibits high fire resistance, electrical insulation, and thermal insulation properties, making it an important fireproof, insulating, and thermal insulation material. Asbestos is manually packed into the cabinet during production, a relatively tedious process, but it is suitable for a wide range of high and low temperatures, making it the most commonly used material for test chamber insulation layers.

Door and Handle

High-quality door handles and hinges ensure strength and prevent detachment. The door frame is reinforced around the perimeter—specifically, reinforcing ribs are welded inside the door before insulation to ensure strength and prevent door deformation.

Sealing Ring

Special high and low temperature resistant silicone rubber sealing strips are used to ensure the tightness of the test area. A door frame heating wire is installed around the door frame to prevent condensation at low temperatures.

Anti-Condensation Device

Condensation occurs when the dew point temperature is lower than the ambient temperature. Most aging test chambers experience condensation on the cabinet glass shortly after the lamps are turned on, seriously affecting test progress. Our company adopts a specially processed anti-condensation filter system, eliminating condensation on the cabinet after the lamps are activated.

Drawer-Type Lamp Housing

Refrigeration and Heating Design

Compressor Unit

Refrigeration principle: The refrigeration cycle adopts the reverse Carnot cycle, consisting of two isothermal processes and two adiabatic processes. The process is as follows: The refrigerant is adiabatically compressed to a higher pressure by the compressor, consuming work and increasing the discharge temperature. The refrigerant then exchanges heat isothermally with the surrounding medium through the condenser, transferring heat to the medium. Subsequently, the refrigerant undergoes adiabatic expansion through the throttle valve to do work, reducing its temperature. Finally, the refrigerant absorbs heat isothermally from objects with higher temperatures through the evaporator, lowering the temperature of the cooled objects. This cycle repeats continuously to achieve cooling.

Evaporator

A single-stage evaporator combination provides more uniform and efficient cooling exchange rate and refrigeration output. Flow control is automatically adjusted by matching thermal expansion valves.

Refrigeration Pipes

High-quality oxygen-free copper pipes are used in the refrigeration system, with gas shielded welding to avoid oxide formation on the inner wall of the copper pipes (a common issue with traditional welding methods) that can damage the refrigeration system and compressor. Vibration reduction measures are fully considered in the refrigeration system design: A) Compressor: Equipped with spring shock absorbers; B) Refrigeration pipes: Arc bends are added to prevent pipe deformation and leakage caused by operational vibration and temperature changes, thereby improving the reliability of the entire refrigeration system.

Main Component List

Installation and Services

Acceptance Conditions for Equipment and Accessories

• Intact packaging: Equipment and accessories must be in original packaging.
• Good condition of equipment and accessories (no damage, breakage, or rust).
• Complete accessories and spare parts.
• Complete operation manual and technical documents.
• The name, model, specification, and configuration of the equipment and accessories meet the requirements.。

Training

The seller provides free equipment operation training.

Quality Guarantee Period

• 12 months from the date of successful installation and acceptance of the equipment.
• Third-party calibration and customer acceptance must be completed within 30 days from the completion of operation training. If acceptance is delayed due to equipment abnormalities, the acceptance period will be extended until completion.
• Users can consult the seller's technical personnel via telephone, fax, email, or other means regarding the equipment or other related technical issues, and the seller will strive to provide satisfactory responses.

Maintenance Services

• During the quality guarantee period, all non-human-damaged accessories are provided free of charge, with no labor costs.
• Within 24 hours of receiving a user's maintenance request, the seller will provide simple diagnosis and troubleshooting guidance to the operator.
• If the fault persists, a maintenance engineer will arrive at the site within 48 hours to provide maintenance and diagnostic services.
• After the quality guarantee period, lifelong maintenance services are provided, and the seller will be responsible for troubleshooting the entire fault. Replacement of parts will be charged separately, with fees determined based on the severity of the fault.