TESTech TTech-GBT19216A Fire Resistance Testing System for Cables and Optical Fibers (Compliant with GB/T 19216 & IEC 60331)
| Brand | TESTech |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TTech-GBT19216A |
| Voltage Range | AC 0–1000 V (adjustable) |
| Test Duration | 0–999 min |
| Flame Temperature Range | 0–1100 °C |
| Air Flow Rate | (80 ± 5) L/min |
| Propane Flow Rate | (5.0 ± 0.25) L/min |
| Specimen Support Ring ID | 150 mm |
| Ring Cross-Section Diameter | 10 ± 2 mm |
| Specimen Length Between Supports | ~300 mm |
| Burner Nozzle Dimensions | 500 mm × 15 mm |
| Orifice Diameter | 1.32 mm |
| Orifice Spacing | 3.2 mm (staggered triple row) |
| Thermocouple Type | Dual K-type (Ø1.5 mm), positioned 45 mm laterally from burner centerline |
| Power Supply | AC 380 V, 3-phase, 50/60 Hz, 30 A |
| Max. Power Consumption | 5000 VA |
| Short-Circuit Protection Current | 2 A |
| Test Load Current | 0.25 A (adjustable) |
| Overall Dimensions | 1600(W) × 850(D) × 1650(H) mm |
| Control Console Dimensions | 600(W) × 750(D) × 1200(H) mm |
| Net Weight | 100 kg |
Overview
The TESTech TTech-GBT19216A Fire Resistance Testing System is an engineered solution for evaluating the circuit integrity of electric cables and optical fiber cables under defined fire exposure conditions. It operates in strict accordance with the performance requirements specified in GB/T 19216.11–2003 (replacing GB 12666.6) and IEC 60331-11, IEC 60331-21 — international standards governing the ability of cables to maintain operational continuity during and after exposure to flame at elevated temperatures. The system implements a controlled, reproducible flame source based on premixed propane–air combustion, delivering thermal stress representative of real-world fire scenarios while enabling precise monitoring of electrical functionality throughout the test duration. Its design emphasizes metrological traceability, mechanical stability, and long-term repeatability — critical attributes for laboratories performing accredited fire resistance verification per ISO/IEC 17025 or supporting product certification under CCC, UL, or CE frameworks.
Key Features
- Stainless-steel construction throughout the combustion chamber, specimen support frame, and fixture components ensures long-term resistance to thermal oxidation, acidic smoke corrosion, and mechanical warping.
- Integrated dual-K-type thermocouple system (Ø1.5 mm) provides real-time, spatially resolved temperature measurement at standardized positions 45 mm lateral to the burner centerline — enabling continuous validation of flame temperature compliance per IEC 60331 (e.g., 750 ± 50 °C for Category B, 950–1000 °C for Category A).
- Precision gas delivery subsystem featuring independent mass flow control for propane and compressed air, regulated via calibrated needle valves and pressure-reducing assemblies — ensuring stable stoichiometric ratio and flame geometry across repeated tests.
- Linear 500 mm × 15 mm ribbon burner with staggered triple-row orifice array (1.32 mm diameter, 3.2 mm pitch) generates uniform thermal flux along the specimen length; burner positioning is mechanically fixed relative to specimen axis (70 ± 10 mm vertical offset, ~45 mm horizontal offset) per standard geometric constraints.
- Intelligent electrical supervision module continuously monitors specimen voltage drop and insulation integrity; automatic shutdown is triggered upon short-circuit detection (2 A fuse threshold) or open-circuit failure, preserving test validity and operator safety.
- Modular control platform with programmable timer (0–999 min), adjustable AC supply (0–1000 V), and configurable load current (0.25 A typical) supports both standard-compliant testing and custom protocol development.
Sample Compatibility & Compliance
The TTech-GBT19216A accommodates single-core and multi-core power cables, instrumentation cables, and optical fiber cables with outer diameters compatible with the 150 mm internal-diameter stainless steel support rings. Specimens are mounted horizontally across two concentric rings, exposing a nominal 300 mm active length to direct flame impingement. The system satisfies mandatory test configuration requirements of GB/T 19216.12 (for mineral-insulated cables), GB/T 19216.21 (for non-mineral insulated cables), and corresponding IEC 60331 parts. All hardware interfaces, gas calibration records, and electrical safety interlocks are documented to support GLP-compliant operation and audit readiness for regulatory submissions (e.g., CCC certification, EU Construction Products Regulation CPR Annex ZA reporting).
Software & Data Management
While the base configuration employs embedded digital instrumentation with LED-based time/temperature/voltage readouts, optional PC-integrated data acquisition modules enable timestamped logging of thermocouple outputs, supply voltage, current draw, and event flags (ignition, fault, shutdown). Export formats include CSV and XML, compatible with laboratory information management systems (LIMS). Audit trails comply with FDA 21 CFR Part 11 requirements when configured with user authentication, electronic signatures, and immutable record storage — facilitating GMP-aligned quality assurance workflows in cable manufacturing QA labs.
Applications
- Verification of fire-resistance classification (Category A/B per IEC 60331) for building wiring, emergency lighting circuits, fire alarm systems, and life-safety infrastructure cables.
- Development and qualification of novel intumescent, ceramic-based, or mica-reinforced insulation systems under standardized thermal stress profiles.
- Comparative evaluation of jacket material formulations (e.g., LSZH vs. halogenated polymers) on circuit integrity retention time.
- Third-party type testing for national and international certification bodies (e.g., CNCA, SGS, TÜV Rheinland).
- Root-cause analysis of premature circuit failure during fire exposure through synchronized thermal–electrical parameter correlation.
FAQ
What standards does this system fully support?
It is designed and validated for GB/T 19216.11–2003, GB/T 19216.12, GB/T 19216.21, IEC 60331-11, IEC 60331-21, and IEC 60331-23 — covering both methodological execution and pass/fail criteria.
Can the system be used for both Category A and Category B fire resistance testing?
Yes — flame temperature is adjustable up to 1100 °C, and burner geometry, gas flow rates, and thermocouple placement meet the distinct thermal input specifications for both categories.
Is calibration documentation provided with the system?
Each unit ships with factory calibration certificates for thermocouples, flow meters, and voltage/current sensors, traceable to national metrology institutes (NIM, China); on-site calibration services and annual verification protocols are available.
Does the system include safety interlocks for operator protection?
Yes — integrated flame failure detection, over-temperature cutoff, electrical ground-fault monitoring, and emergency stop circuitry conform to IEC 61000-6-2 and GB/T 18216.1 requirements.
What maintenance is required for long-term reliability?
Recommended quarterly inspection includes orifice cleaning, thermocouple drift verification, gas line leak testing, and mechanical alignment check of burner-to-specimen geometry — all procedures detailed in the bilingual (EN/CN) technical manual.
