The cord winding crack tester is used to determine the bending performance of wires and cables at low temperatures. It is suitable for round wire and cable with outer diameter ≤12.5mm or round insulated core, and flat wire and cable with size ≤20mm or fan-shaped insulated core that cannot be made into dumbbells. The machine is an indispensable instrument in the wire and cable industry for the bending function test of products. The test standards be used for cord winding crack machine include: IEC 60811-1-4JIS C 3005 2014ISO 6722-1ISO 6722 -2
Test Mothod for Cord Winding Crack Tester: The machine is specialized in testing the impact and bending of the variable wires under low-temperature condition. If the cross -sectional area of than 100mm², then specimen must be put into testing chamber for freezing for one hour, after that immediately rolls specimen aro specified rod in a uniform speed. Otherwise, for the cross – sectional area over 100mm², roll the specimen before hand and put in freezing one hour. Afterwards, immediately roll specimen around the rod in reverse direction. Finally, take out of specimen for check its surface has crack or fissure or not.
The cord winding crack tester produced by Wewon Tech is suitable for the bending performance test of power distribution and communication cables and optical cables, including the material changes of the polymer insulation and protective sheath materials of marine and offshore cables and optical cables after bending at different temperatures. The test standards frequently used by customers are: ISO 6722-1 and ISO 6722-2. ISO 6722 has two parts, Part 1 is the size, test methods and requirements of copper conductor wires, and Part 2 is the size, test methods and requirements of aluminum conductor wires. Page Source: http://blog.sina.com.cn/xmsgstest
Model Description
WEW-XL-010
WEW-XL-100
Test Room (mm)
400×500×500
1000×1000×1000
Dimensions (mm)
1030×1020×1470
1610×1560×1960
Temperature Range
-40°C (C type) ︱-70°C (E type)
Volatility Uniformity
≤±0.5℃︱≤2℃
Temperature Rise
0.7~1℃/min (3℃/min, 5℃/min, 10℃/min)
Insulation Materials
Glass Fiber Cotton ︱Rigid Polyurethane Foam
Cooler System
Multi-stage Diaphragm Evaporator
Air Circulation
Single circulation, extended shaft, stainless steel centrifugal fan blades
Cooling Method
Unit Cooling Method︱Dual (cascade) Cooling Method
Compressor
French “Tecumseh” fully enclosed refrigeration compressor
Controller
Japan “Fuji” ︱ Honeywell, USA
Sensor Type
PT100 Platinum Resistance
Security Device
Leakage protection, over-temperature protection, fast fuse, compressor over-voltage protection
Standard Configuration
Internally heated hollow glass observation window: one 250×300 (mm), One test hole φ50mm, Two sample holders, One lighting lamp
Power Supply
220V 50Hz︱380V 50Hz
ISO 6722-1 Road Vehicles 60V and 600V Single-Core Cables, Part 1: Dimensions, test methods and requirements for copper conductor cables. ISO 6722-1: 2011 Main Test Content Include:
ISO 6722 -2 Road Vehicles 60V and 600V Single-Core Cables, Part 2: Dimensions, test methods and requirements for aluminium conductor cables. ISO 6722-2: 2013 Main Test Content Include:
1 Outside Cable Diameter (ISO 6722-2 Section 5.1)
2 Insulation Thickness (ISO 6722-2 Section 5.2)
3 Conductor Diameter
4 Cross-Sectional Area (ISO 6722-2 Section 5.3.2 Method 2)
5 Conductor Resistance
6 Withstand Voltage
7 Insulation Faults
8 Insulation Volume Resistivity
9 Pressure Test at High Temperature
10 Strip Force
11 Low Temperature Winding
12 Cold Impact
13 Sandpaper Abrasion
14 Scrape Abrasion
15 Long-Term Ageing, 3000 Hours
16 Short-Term Ageing, 240 Hours
17 Thermal Overload
18 Shrinkage by Heat
19 Fluid Compatibility (ISO 6722-2 Section 5.17)
20 Durability of Cable Marking
21 Resistance to Ozone (ISO 6722-2 Section 5.19)
22 Resistance to Hot Water
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ISO 6722-1 Road Vehicles –60V and 600V Single-Core Cables –Part 1: Dimensions, Test Methods and Requirements for Copper Conductor Cables
ISO 6722-2 Reference Standards
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ISO 6892-1 Metallic Materials –Tensile Testing –Part 1: Method of Test at Room Temperature
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EN 573-1 Aluminium and Aluminium Alloys –Chemical Composition and Form of Wrought Products –Part 1: Numerical Designation System
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EN 573-3:2009 Aluminium and Aluminium Alloys –Chemical Composition and Form of Wrought Products –Part 3: Chemical Composition and Form of Products
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