Jiubin JB-19216 Fire Resistance Testing System for Cables and Wires

Overview

The Jiubin JB-19216 Fire Resistance Testing System is a purpose-built combustion test apparatus engineered to evaluate circuit integrity of electric cables and wires under defined fire exposure conditions. It operates on the principle of controlled flame impingement—applying a calibrated, high-temperature flame (≥750 °C) to a vertically mounted cable sample while maintaining electrical continuity under rated voltage. The system implements the standardized heating profile and mechanical stress protocols specified in international fire resistance standards, including IEC 60331 series and BS 6387. Unlike generic burners or open-flame setups, the JB-19216 integrates a precision band-type burner with Venturi-based gas-air mixing to ensure stable stoichiometric combustion, uniform thermal distribution across the test zone, and reproducible flame geometry—critical for compliance-driven pass/fail determinations in quality assurance and regulatory certification workflows.

Key Features

• Band-type burner assembly with integrated Venturi mixer for consistent fuel-air ratio and flame stability at ≥750 °C
• Dedicated fire-resistant test chamber constructed from refractory ceramic fiber insulation and stainless-steel structural framing
• Modular test fixture system supporting simultaneous evaluation of fire-only, fire-plus-water-spray, and fire-plus-mechanical-impact test modes per BS 6387
• Adjustable vertical cable mounting frame with calibrated tensioning mechanism (0–100 N range) to replicate installation-relevant mechanical loading
• Integrated flame temperature monitoring via dual-point Type K thermocouples (±1.5 °C accuracy), traceable to NIST standards
• Independent control cabinet with programmable logic controller (PLC), real-time event logging, and emergency shutdown interlock circuits compliant with IEC 61508 SIL1

Sample Compatibility & Compliance

The JB-19216 accommodates cable specimens up to Ø40 mm in diameter and 1200 mm in exposed length. It supports mineral-insulated copper-sheathed (MICC), cross-linked polyethylene (XLPE), ethylene propylene rubber (EPR), and low-smoke zero-halogen (LSZH) cable constructions rated ≤450/750 V. All operational parameters—including flame duration (90 min standard), water spray pressure (0.25 ± 0.05 MPa), impact energy (2.5 J pendulum strike), and voltage application timing—are aligned with the procedural requirements of GB/T 19216.11–2003, IEC 60331-21:1999, and BS 6387:1994 Clause 9. The system’s design enables full traceability to ISO/IEC 17025:2017 calibration practices, and its test reports may be structured to support GLP documentation requirements for third-party certification bodies.

Software & Data Management

The JB-19216 operates without proprietary closed-source software; instead, it utilizes a deterministic PLC-based control interface with timestamped digital event logging (flame ignition, voltage application, water spray activation, impact trigger, continuity failure). Logged data are exportable in CSV format via USB port, compatible with laboratory information management systems (LIMS) and audit-ready reporting tools. Optional RS-485 Modbus RTU interface enables integration into centralized plant-level SCADA networks. While no embedded analytical software is included, the system satisfies FDA 21 CFR Part 11 requirements for electronic records when paired with validated external data acquisition platforms that implement user authentication, audit trails, and electronic signatures.

Applications

This system is deployed in cable manufacturing QA laboratories, national metrology institutes, and accredited testing facilities performing type approval testing per IEC 60331 and BS 6387. Typical use cases include pre-certification validation of fire-resistive cable designs, batch release testing for MICC cables used in emergency lighting and fire alarm circuits, comparative evaluation of intumescent coatings under sustained flame exposure, and root-cause analysis of circuit integrity failure modes (e.g., insulation charring, conductor oxidation, sheath delamination). Its modular architecture allows adaptation to emerging standards such as IEC 60331-2:2022 (fire resistance with mechanical shock) through hardware retrofitting and firmware updates.

FAQ

Does the JB-19216 meet IEC 60331-23:1999 requirements for fire-with-mechanical-impact testing?

Yes—the system includes a calibrated pendulum impact mechanism delivering 2.5 J kinetic energy at the designated test height, synchronized with flame exposure per Clause 8.3 of IEC 60331-23.
Can it be used for cables rated above 450/750 V?

No—its electrical continuity monitoring circuitry and safety interlocks are validated only for cables within the ≤450/750 V voltage class, as stipulated in GB/T 19216.21 and IEC 60331-21.
Is calibration documentation provided with shipment?

Each unit ships with a factory calibration certificate covering thermocouple linearity, gas flowmeter accuracy (±2% FS), and impact energy verification, traceable to CNAS-accredited reference standards.
What utilities are required for operation?

Propane or natural gas supply (15–25 kPa regulated), compressed air (0.6 MPa, oil-free), 220 VAC ±10%, 50 Hz single-phase power, and potable water source for spray mode.
Is remote diagnostics supported?

Not natively—but the PLC’s Modbus RTU port permits integration with third-party remote monitoring gateways configured for secure industrial Ethernet communication.