Full Compliance with Global Cable Fire Test Standards

The NH-016 cable fire resistance test machine is engineered and manufactured in full alignment with mainstream international and national cable fire circuit integrity standards:

• GB/T 19216.21-2003 / IEC 60331-21:1999: Tests for circuit integrity of electric cables rated 0.6/1.0kV and below
• GB/T 19216.23-2003 / IEC 60331-23:1999: Circuit integrity tests for data cables under fire conditions
• GB/T 19216.25-2003 / IEC 60331-25:1999: Fire resistance testing for optical fiber cables
• BS 6387:2013 Protocol C: British standard cable fire resistance test specification

Core Technical Specifications

1. Heavy-Duty Combustion Chamber

• Chamber internal dimensions: 3.0m (L) × 3.0m (W) × 3.0m (H), with ±0.1m tolerance
• Exterior shell: 304 stainless steel; interior lining: 700℃ high-temperature fireproof board
• Observation window: 750℃ fire-resistant glass for full visual monitoring of test process
• Optional chamber structures: Steel plate sealed structure (standard) or brick-wall structure (customizable, customer-side masonry required)

2. Precision Combustion Control System

• High-voltage electronic automatic ignition with built-in flame detection function
• Imported mass flow controllers for precise air and propane flow regulation
• Dual pressure reducing valves stabilize gas pressure at 0.1MPa
• Two 1.5mm K-type thermocouples for real-time flame temperature monitoring
• Adjustable flame temperature: 600℃ ~ 1000℃, with graded settings (Grade A: 650℃, Grade B: 750℃, Grade C/D: 950℃)
• Two burner options:
  • Multi-hole strip burner: 500mm length, 15mm width, 3 staggered rows of 1.32mm holes
  • BS 6387 Protocol C ribbon burner: 610mm nominal length, with Venturi mixer
• Burner assembly mounted on guide rails for flexible position adjustment

3. Circuit Integrity Monitoring System

• 5kW three-phase transformer, supports 3-phase 5-wire 5-circuit simultaneous testing
• Each circuit equipped with ammeter, indicator light, 2A fuse and adjustable resistor (0.25A step adjustment)
• Test voltage: 0 ~ 1000V adjustable
• Load current range: 0.1 ~ 3A, with over 3A overload protection
• Intelligent short-circuit detection: automatic alarm and fire shut-off when specimen short-circuits
• Real-time temperature curve display via touch screen control panel

4. Specimen Holding & Auxiliary Configuration

• 304 stainless steel specimen ladder with adjustable vertical supports, length 1200mm, height 60mm, load capacity 30kg
• 7 pieces of 150mm inner diameter metal support rings with freely adjustable spacing
• Mobile cabinet with casters for easy lab layout adjustment
• Full timer range: 0 ~ 99h 99min 99s, with programmable burn time and water spray time
• Automatic end-of-test gas shut-off and audible alarm for flameout or test completion

Key Product Advantages

1. All-in-One Multi-Function Testing: Integrates fire resistance, water spray and mechanical impact test capabilities in one unit, covering all IEC 60331 test scenarios without extra equipment.
2. Fully Automated Test Workflow: Automatic ignition, timing, temperature control, gas shut-off and alarm system reduces manual operation and improves test repeatability.
3. High-Precision Gas & Temperature Control: Imported mass flow controllers and dual thermocouple monitoring ensure stable flame temperature matching standard grade requirements.
4. Multi-Circuit Simultaneous Testing: 5 independent test circuits support batch testing of multiple cable samples, improving lab throughput.
5. Flexible Customization Options: Customizable chamber structure, burner types and test parameters to meet special lab testing demands.
6. Comprehensive Safety Protection: Flameout alarm, short-circuit protection, over-current protection and over-temperature protection ensure safe long-term operation.

Wide Application Scenarios

• Power cable manufacturers: 0.6/1.0kV low-voltage cable fire resistance QC testing
• Data cable & optical fiber cable factories: Circuit integrity performance verification
• Third-party ISO 17025 accredited testing laboratories: Cable fire certification testing
• Building fire safety inspection agencies: On-site cable fire performance verification
• Wire & cable R&D institutes: New flame-retardant insulation material development

FAQ

Q1: What international standards does the NH-016 cable fire resistance tester comply with? A: The tester fully meets IEC 60331-21, IEC 60331-23, IEC 60331-25, GB/T 19216 series and BS 6387:2013 Protocol C standards, covering power cables, data cables and optical fiber cables.

Q2: What is the adjustable range of flame temperature for this test machine? A: The flame temperature can be adjusted from 600℃ to 1000℃, with standard graded settings: Grade A 650℃, Grade B 750℃, Grade C and D 950℃, matching different cable fire resistance rating requirements.

Q3: Can this equipment perform water spray and impact tests besides fire resistance testing? A: Yes. The NH-016 is an integrated test system that supports cable fire resistance, water spray and mechanical impact testing, fully meeting the full test requirements of IEC 60331 series standards.

Q4: Is the combustion chamber size or structure customizable? A: The standard chamber is 3m×3m×3m steel plate structure. We also offer custom brick-wall structure options and custom chamber sizes to meet specific laboratory testing needs.