IEC60695-2-20 Flammability Testing Equipment Hot wire ignition tester With Electrical control

Standard:

IEC60950-1 Information technology equipment – Safety – Part 1: General requirements Annex A.4 Hot wire ignition test;

IEC60947-1 Low-voltage switchgear and controlgear –Part 1: General rules Annex M M.1 Hot wire ignition test (HWI);

IEC60695-2-20 Fire hazard testing — Part 2: Glowing/Hot wire based test methods — Section 20: Hot-wire coil ignitability test on materials.

Description of test apparatus:

The sample shall be fastened in a fixture which provides two supporting posts positioned 70 mm apart to support the test specimen in a horizontal position, at a height of 60 mm above the bottom of the chamber, in the approximate centre of the test chamber (see Figure M.1 ).

A 250 mm ± 5 mm length of NiCr-wire (80 % nickel, 20 % chromium, iron free) approximately 0.5 mm diameter and having a cold resistance of approximately 5.28 Ω/m and a length-to-mass ratio of 580 m/kg shall be used. Prior to testing, the wire shall be connected in a straight length to a variable source of power which is adjusted to cause a power dissipation of 0.26 W/mm in the wire for a period of 8 s to 1 2 s.

After cooling, the wire shall be wrapped around a sample to form five complete turns spaced 6.35 mm ± 0.05 mm apart. A winding fixture shall be used, which will uniformly position the wire in the centre portion of the sample with a winding force of 5.4 N ± 0.02 N.

The ends of the wire shall be connected to the variable power source.

The supply circuit capacity shall be sufficient to maintain a continuous linear 48 Hz to 62 Hz power density of at least 0.31 W/mm over the length of the heater wire at or near unity power factor. The power density of the supply circuit at 60 A and 1.5 V shall be approximate 0.3 W/mm. It shall be possible to adjust the power level, smoothly and continuously and measure the power to within ±2 %.

Parameter:

Guangzhou Hejin Automation Control Technology Co., Ltd. is a modern enterprise specialized in R & D, manufacturing and sales of technology intensive industrial equipment. Its main products include laboratory testing equipment and production line detection system, which are widely applied to refrigeration, automotive, electric power industries, military, home appliances and other industries.

The company is led by Mr. Li Jianhe, an expert with profound knowledge in vacuum and automatic testing equipment. The company has its own core technology and a number of invention and utility model patents. Relying on a high-level talent team, the company adopts a new production mode focusing on development and design, assembly and debugging and after-sales service, and launches products suitable for its use and technical requirements according to different situations of customers. Since its establishment, the company has launched various types of special equipment to the market. While meeting the domestic market demand, the equipment is also exported to the Americas, Europe, Asia and Africa and other countries and regions. The pursuit of excellence and respect is the business philosophy and the highest guiding principle of the company's operation and management.

Our business goal is to rely on our technology to provide customers with excellent products and services. We will promote core competitiveness, create high performance, and build into the world's top brand in the field of automation and control.

HeJin Product Series:

Auto Parts Test Equipment

Leak Testing Equipment

IP Test Equipment

Automatic flame Brazing Machine

Flammability Testing Equipment

Impact Testing Machine

Plug Socket Test Equipment

Test Finger Probe

Household Appliance Test Equipment

Appliance Performance Test Lab