Microduct Connectors Compliance Standard EN 61386-22 Glow Wire Test at 750℃

In European data centers, municipal networks, and FTTH/FTTD microcable blowing projects involving high-density fiber optics, the EN 61386-22 standard has become a mandatory entry requirement for fiber duct connector. As the EU's specialized safety standard for flexible conduit systems, its rigorous requirements—covering flame retardancy, mechanical strength, and environmental adaptability—directly determine whether a product can legally enter the European market and ensure long-term operational safety.

From the very inception of its design, the Microduct Connector manufactured by FCST has been meticulously aligned with every clause of the EN 61386-22 standard. Having successfully passed the 750°C Glow-Wire Test with a 100% success rate, it offers comprehensive, multi-dimensional compliance—providing your global projects with both seamless integration security and a definitive market passport.

Testing Standards

1. Test Equipment Parameters

1.1 Glow-wire: Ni80/Cr20 nickel-chromium alloy wire with a diameter of 4 mm

1.2 Temperature: 750±3℃ (applied to the specimen after stabilizing for 1 minute)

1.3 Contact Pressure: 1.0N±0.2N (applied vertically)

1.4 Contact Duration: 30 s±0.1 s

1.5 Temperature Measurement: Type K Class 1 thermocouple, with the welded junction located 1 mm from the tip of the glow-wire

PIG1-EN 61386-22 Glow Wire Test at 750℃: Schematic Diagram

2. Specimen Requirements

2.1 Taken from a microduct coupling specimen; retains original wall thickness and structure

2.2 Pre-conditioning: Placed in an environment of 23℃ and 50% RH for 24 hours prior to testing

3. Test Procedure

3.1 Energize and heat the glow-wire to 750℃, maintaining a stable temperature for 1 minute

3.2 Apply the glow-wire vertically to the surface of the specimen with a pressure of 1.0 N for a duration of 30 seconds

3.3 Remove the glow-wire and commence a 30-second observation period

3.4 Full Recording: Whether ignition occurs; duration of flame/glow; presence of burning droplets; and whether any droplets ignite the tissue paper placed underneath

4. Acceptance Criteria (All conditions must be met simultaneously)

4.1 No ignition occurs; or, if ignition does occur, the flame/glow self-extinguishes within 30 seconds after the glow-wire is removed. (tₑ≤30 s)

4.2 During the test and after removal of the glow-wire, no burning droplets shall ignite the tissue paper placed beneath the specimen

4.3 No continuously burning flames or burning fragments shall fall outside the test bench area.

PIG1-EN 61386-22 Glow Wire Test at 750℃: Test Report Screenshot

EN 61386-22 is the specific standard within the IEC 61386 series dedicated to Pliable Conduit Systems. This testing directly determines whether micro duct couplers can prevent becoming a source of ignition in high-temperature risk scenarios—such as overheating server rooms or electrical faults—thereby safeguarding both fiber optic networks and personnel safety. Contact us today to obtain the full test report, product samples, and customized solutions, and let compliant products serve as your key strategic asset for expanding into high-end global markets.

FCST - Better FTTx, Better Life.

At FCST, we manufacture top-quality microduct connector, microduct closure, telecom manhole chambers,marker ball and fiber splice boxes since 2003. Our products boast superior resistance to failure, corrosion, and deposits, and are designed for high performance in extreme temperatures. We prioritize sustainability with mechanical couplers and long-lasting durability.

FCST, aspires to a more connected world, believing everyone deserves access to high-speed broadband. We're dedicated to expanding globally, evolving our products, and tackling modern challenges with innovative solutions. As technology advances and connects billions more devices, FCST helps developing regions leapfrog outdated technologies with sustainable solutions, evolving from a small company to a global leader in future fiber cable needs.