Roof-Mounted Photovoltaic Module Fire Test Apparatus，UL 790 photovoltaic roof fire test equipment

The Roof-Mounted Photovoltaic Module Fire Test Apparatus is a specialized testing system developed in accordance with GB/T 30735-2014 for evaluating the external fire performance of roof-mounted photovoltaic modules and roofing products. Based on test principles derived from ENV 1187 (t1 method) and ISO 12468-1. the apparatus simulates different fire exposure conditions such as wind influence and thermal radiation. It provides standardized test methods for assessing the external reaction to fire of roof systems and roof coverings, supporting fire safety evaluation of photovoltaic installations on roofs.

Application

The test apparatus is suitable for fire performance evaluation of roofing systems and photovoltaic installations under external fire exposure conditions. Typical applications include:

External fire reaction testing of roof-mounted photovoltaic modules

Fire performance evaluation of roof coverings and roofing assemblies

Assessment of building-integrated photovoltaic (BIPV) systems

Combustion behavior testing of roof construction materials

Fire safety research related to renewable energy installations

Type testing and compliance verification in certification and testing laboratories

Standards

The apparatus is designed to meet the requirements of the following standards:

(1) GB/T 30735-2014 – Test Method for Reaction to External Fire of Roofs and Roof Coverings

(2) ENV 1187: t1 – Test Methods for External Fire Exposure to Roofs

(3) ISO 12468-1:2013 (Method B) – Fire Performance of External Roofs and Roof Coverings — Part 1: Test Methods

(4) ISO 12468-1:2013 (Method C) – Fire Performance of External Roofs and Roof Coverings — Part 1: Test Methods

(5) UL 1703: multi-family and hotel room individual dwelling unit smoke detection monitors: electric signal detection of house dust;

(6)UL 790: standard method of fire test for roof covering materials;

(7)ASTM e 108-04: standard method of fire test for roof covering materials;

(8)NFPA 256: fire test of roof deck.

(9)IEC 61730-2 Appendix b: fire tests on PV modules.

Parameters

Item	Specification
Radiant Panel Radiation Surface	600 mm × 600 mm
Wood Crib Fire Gas Combustion Device	1 set
Test Specimen Rack Angle	Adjustable, 0–50°
Air Duct Material	SUS304 stainless steel
Air Duct Thickness	2 mm
Fan Airflow Capacity	Max. 250 m³/min
Fan Power	5.5 kW
Fan Frequency Control	3-phase 380 V, 5.5 kW
Air Duct Adjustable Angle	0–35°
Impeller Anemometer	3 units
Wind Speed Accuracy	0.1 m/s

Features

Frame-type structure for combustion and specimen holding systems, providing high mechanical stability.

Independent control cabinet and gas supply cabinet design, facilitating laboratory layout and improving operational safety.

Supplied with a compact stainless steel tube burner for wood shavings combustion tests.

Burner equipped with a silicon nitride igniter and UV flame detector, ensuring reliable ignition and real-time flame monitoring to prevent gas leakage.

Imported high-precision rotameter and branded pressure gauges for accurate control of fuel gas flow, combined with solenoid valves for automatic gas shutoff at the end of tests.

Specimen support frame constructed from welded metal square tubes and angle steel, ensuring rigidity during testing.

Adjustable specimen inclination angle using pneumatic actuation, allowing convenient push-button operation.

Fine honeycomb grille installed in the upper air duct and coarse honeycomb grille at the outlet to stabilize airflow.

Air duct angle adjustment driven by a ball screw and servo motor, enabling automatic and precise positioning.

Computer and dedicated software control the entire test process, ensuring convenient operation and reliable safety management.

Accessories

(1) Radiant panel assembly

(2) Wood crib fire gas combustion device

(3) Stainless steel tube burner

(4) Specimen support rack

(5) Air duct system with adjustable angle

(6) Centrifugal fan and frequency control unit

(7) Impeller-type anemometers

(8) Control cabinet and gas supply cabinet

(9) Computer and professional test software

Test Procedures

Specimen Installation

Mount the photovoltaic module or roofing specimen securely on the adjustable test rack and set the required inclination angle.

System Configuration

Adjust the air duct angle and configure the fan speed according to the selected test method and standard requirements.

Ignition and Heating

Activate the radiant panel and combustion system. For applicable tests, ignite the wood crib or burner using the silicon nitride igniter.

Fire Exposure Simulation

Expose the specimen to controlled thermal radiation and wind conditions to simulate external fire scenarios as defined in the selected method.

Monitoring and Recording

Monitor airflow velocity using the impeller anemometers and observe the combustion behavior of the specimen throughout the test.

Test Completion

After the test cycle is completed, the system automatically cuts off the gas supply and records test data for further evaluation.

Maintenance Information

Routine inspection of the burner, gas pipelines, solenoid valves, and flame detection system is recommended to ensure safe operation. The airflow system, including the fan, air duct, and honeycomb grilles, should be checked periodically for cleanliness and proper alignment. Moving components such as the specimen rack adjustment mechanism and air duct angle drive system should be maintained to ensure smooth operation. Electrical and control systems should be verified regularly according to laboratory safety procedures.

Conclusion

The Roof-Mounted Photovoltaic Module Fire Test Apparatus provides a standardized and reliable solution for evaluating the external fire reaction performance of roof-mounted photovoltaic modules and roofing products. By simulating fire exposure conditions involving thermal radiation and wind effects, the system meets the requirements of GB/T 30735. ENV 1187. and ISO 12468-1. Its stable structure, precise airflow control, and automated operation make it suitable for fire safety research, product certification, and compliance testing.

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