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Test Condition and method |
Requirement |
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5.1.1 Bursting Strength
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Test Temp:23¡À5 ¡æ |
Min 2500N |
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5.1.2 Thermal Ageing
Bursting Strength
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168Hrs at 150¡À2 ¡æ
(After free shrinkage)
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Min 2700N |
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5.1.4 Dielectric strength
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Electrode Surface
Dia: 6mm
Wight: 50¡À2gms
Voltage steps:2KV/20sec |
Min 12 KV/mm |
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5.1.5 Split Resistance |
Temp: 200¡À2 ¡æ
Test time 23¡À3 ¡æ
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No split
Propagation
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5.1.6 Carbon Content
UV Res of Out/layer
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Heating rate:20 ¡æ /min
Gas flow rate:300cc/min
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Min 2.5% |
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5.1.8 Cold Crack Resistance
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Test temp ¡Ü -40 ¡æ |
No crack |
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5.1.9 Resistance to aggressive media Bursting Strength
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Test media: Fuel oil, petroleum jelly
Test temp: 70¡À2 ¡æ
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Min 2000N |
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5.1.10 Environmental
Stress cracking
|
10% Igepal Co 630
solution immersion
Time 30 days
Test Temp: 50¡À3 ¡æ |
No cracking |
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5.1.11 Temp. indicating
paint conversion
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Scraped off paint from sleeve
|
230-250 ¡æ |
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Item |
Test methods and conditions |
Requirement |
|
5.3.2Appearance |
According to YD/T590-1 requirements
The sleeve shall be homogenous and free of flaws, defects, pinholes, bubbles, cracks or inclusions visible with the unaided eye.
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No defects which will affect the product performance
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5.3.3 Tightness test |
According to YD/T590-1 requirements
Immerse in water bath at
Temp: 23¡À3 ¡æ Time:15 min
Internal Regulated
Pressure: 35¡À2Kpa
|
No leakage |
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5.3.4 Temperature cycling test |
According to YD/T590-1 requirements
Highest Temp: 60¡À2 ¡æ
Lowest temp: -30 ¡æ ¡À2 ¡æ
Dwell time: 4hours
Transition time: 2 hours
Cycle duration; 12 hours
Internal regulated
Pressure; 35¡À2Kpa
Number of cycles: 10 |
Tightness as per 5.3.3 |
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5.3.5
High temperature tightness test
|
According to YD/T590-1-5.5 requirements
Temp: 60¡À2 ¡æ
Pressure; 35¡À2Kpa
Time: 168h |
Tightness as per 5.3.3 |
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5.3.6 Axial tension test |
According to YD/T590-1-5.6 requirements
Time: 8 hours each cable
Load: D/45¡Á1000N
(700N¡À10N max)
Internal Regulated
Pressure: 35¡À2Kpa |
Tightness as per 5.3.3 |
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5.3.7 Bending test
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According to YD/T590-1-5.7 requirements
Clamping distance: 10¡ÁD from closure edge(min 250 mm)
Force: max 500N or 45 deg
Bend. Internal regulated
Pressure: 35¡À2Kpa
Bending cycle: 2
cable cycle: bend cable & hold for 5 minutes, bring to normal & bend in opposite direction, hold 5 minutes & bring to normal position
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Tightness as per 5.3.3 |
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5.3.8 Tension test |
According to YD/T590-1-5.7 requirements
Torque: 50 Nm. Or 90 deg rotation
Clamping distance: 10¡ÁD from closure edge
(D=outer dia Of cable)
2 complete torsion cycles per cable. Internal regulated Pressure: 35¡À2Kpa
cycle: Twist cable and hold for 5 minutes; bring cable back to starting position
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Tightness as per 5.3.3 |
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5.3.10 Static Load test |
According to YD/T590-1-5.7 requirements
Load: 1000N/5sq cm
Load application: 90¡ã from seam, Int, regulated pressure: 35¡À2Kpa
Time: 5 min remove load, turn sample through 180¡ã, reapply load for 5 min
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Tightness as per 5.3.3 |
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5.3.11Impact test
Steel ball test |
According to YD/T590-1-5.7 requirements
steel ball
Weight: 1Kg Drop height 1m
Impact: 90Deg. From seam
(sleeve middle)
Internal regulated
Pressure: 35¡À2Kpa
Temp: -15 ¡æ
Internal regulated
Pressure: 35¡À2Kpa
(Channel closing)
|
Tightness as per 5.3.3
¡¡ |
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5.3.12 Vibration test
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According to YD/T590-1-5.7 requirements
Vibration: 10Hz
Amplitude: 3mm (6mm peak to peak)
Time: 6days
Clamping distance:10¡ÁD from closure edge.
(D=the cable outer dia)
Internal regulated
Pressure: 35¡À2Kpa
|
Tightness as per 5.3.3 |
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5.3.13 Resistance to stress cracking
|
According to YD/T590-1-5.7 requirements
Test temp: 50¡À2 ¡æ
Internal regulated pressure: 35¡À2Kpa
Test medium: 10% igepal
Solution test time: 7 days |
Tightness as per 5.3.3 |