Technical Specification for Nonpressurized Fibre-reinforcing Product
B3100 (97)2822
Q/BKBT/A-1997

Proservice Specification for Non-pressurized Joint Splice Closure

1997-10-05 Issue

A1.Scope
This Chapter details the technical requirements for heat shrinkable wraparound splice closure ,for use in the main and distribution non pressurized cable networks.

A2.Applied standards and abbreviations
The following unattached China national &international standard shall be applied &deemed to be an integral part of this specification.
YD/T590.1-92 Splice closure 1 part-General technology
YD/T590.1-92 Splice closure 2 part-Heat shrinkable sleeve

A3.Type and size
A3.1 RSBJ type shall be used in non pressurized network.
A3.2 All closures shall be capable of in-line and branched applications up to three cables on each side.
A3.3 Size
A3.3.1 D/d-L
D: Maximum splice bundle diameter
d: Minimum cable diameter
L: Nominal sheath opening
A3.3.2 Non-pressurized closures size shall be as shown

Cable Pairs

Pairs Diameter

Size for B-type

Size for UR

Size for Module4000DWP

10

0.4-0.6

43/8-300

43/8-300

  

30

0.4-0.6

43/8-300

43/8-300

  

50

0.4-0.6

43/8-300

43/8-300

43/8-300

100

0.4-0.6

43/8-500

43/8-500

43/8-500

200

0.4-0.6

75/15-500

75/15-500

75/15-500

300

0.4-0.6

75/15-500

75/15-500

92/25-500

400

0.4-0.6

92/25-500

122/30-500

122/30-500

500

0.4-0.6

92/25-500

122/30-500

122/30-500

600

0.4-0.6

122/30-500

122/30-500

122/30-500

800

0.4-0.6

122/38-500

122/30-650

122/30-650

1000

0.4-0.6

122/30-650

160/42-500

160/42-500

1200

0.4-0.6

160/42-500

160/42-500

160/42-500

1400

0.4-0.6

160/42-500

160/42-500

160/42-500

1600

0.4-0.5

160/42-500

160/42-650

160/42-650

1800

0.4-0.5

200/50-500

200/50-500

200/50-720

 

 

 

 

 

 

 

 

 

A3.3.3 For example “RSBJ550 43/8-300”, please see product installation sheet.
A3.3.4 Accept special size ordered by customers

A4. Design requirements
A4.1 General description
A4.1.1Closure shall retain the electrical & mechanical properties in the working temperature range -30℃to 60℃ and atmosphere pressure range 86kPa to 106kPa.
A4.1.2 Closure shall be installed at temperatures between –10℃to 45℃.
A4.1.3 Dimension of main parts shall meet YD/T590.2-4.1requirements, please see documents (Q/Raylinks-09-01-1999 process control).
A4.2 Heat shrinkable sleeve
A4.2.1 The sleeve shall be homogenous and free of flaws, defects, pinholes, bubbles, cracks or inclusions visible with the unaided eye.
A4.2.2 The sleeve shall be made of a fibre reinforced high strength composite material with integrated layer of aluminium serving as a moisture barrier.
A4.2.3 The sleeve shall be internally coated with a flexible heat activated adhesive which will melt and adhere to the cable to form an air and water tight seal
A4.2.4 The sleeve shall be coated externally with a heat sensitive thermo chromic indicator which changes colour when adequate heat has been applied.
A4.2.5 A flexible channel to be used to wrap the sleeve shall be manufactured from corrosion resistant stainless steel.
A4.3 Closure components
A4.3.1 Following items shall be provided for straight and branch joints.
A4.3.1.1 Wrap-around fibre re-inforced heat shrinkable sleeve as specified (with or without valve)
A4.3.1.2 A flexible stainless steel closure channel
A4.3.1.3 A wrap-around metal support canister/variable liner
A4.3.1.4 Branch-off clips (in Branch kits only)
A4.3.1.5 Shield continuity hardware.
A4.3.1.6 Silica gel dessicant in adequate quantity
A4.3.1.7 Cleaning tissure
A4.3.1.8 Abrasive strip(s)
A4.3.1.9 Aluminium foil strips
A4.3.1.10 Aluminium strip for closing canister
A4.3.1.11 PVC tape
A4.3.1.12 Installation gauge
A4.3.1.13 Installation in English language
A4.3.2 In addition to items, the following accessories shall also be provided.
A4.3.2.1 For single branch (one each of following)
A4.3.2.2 For double branch (two each of following)
A4.3.2.3 Branch off clip small for: 10-100 pairs
A4.3.2.4 Branch off clip medium for:200-300 pairs
A4.3.2.5 Branch off clip large for: 600-800 pairs
A4.3.2.6 Branch continuity wire
A4.3.2.7 Continuity wire connecting clip
A4.3.2.8 Tie wrap
A4.3.2.9 Cleaning tissue
A4.3.2.10 Aluminium foil
A4.3.2.11 Abrasive strip

A5. Performance requirements of completed joint closures

A5.1 Materials
 

Test Condition and method

Requirement

A5.1.1 Bursting Strength

Test Temp:23±5℃

Min 2500N

A5.1.2
Thermal Ageing
Bursting Strength

168Hrs at 150±2℃
(After free shrinkage)

Min 2700N

A5.1.4
Dielectric strength

Electrode Surface
Dia: 6mm
Wight: 50±2gms
Voltage steps:2KV/20sec

Min 12 KV/mm

A5.1.5
Split Resistance

Temp: 200±2℃
Test time 23±3℃

No split
Propagation

A5.1.6
Carbon Content
UV Res of Out/layer

Heating rate:20℃/min
Gas flow rate:300cc/min

Min 2.5%

A5.1.8
Cold Crack Resistance

Test temp≤-40℃

No crack

A5.1.9
Resistance to aggressive media
Bursting Strength

Test media: Fuel oil,petroleum jelly
Test temp: 70±2℃

Min 2000N

A5.1.10
Environmental
Stress cracking

10% Igepal Co 630
solution immersion
Time 30 days
Test Temp: 50±3℃

No cracking

A5.1.11
Temp. indicating
paint conversion

Scraped off paint from sleeve

230-250℃

A5.2 Hot melt adhesive

 

Test method and conditions

Requirements

A5.2.1 Peel Strength

-PE at 23±2°C
-PE at 23±2°C
-Pb at 23±2°C

Min 100N/25mm

A5.2.2 Shear Strength

At 23±2°C

Min200N

A5.2.4 Corrosive Effect 

Copper Mirror test
Test time:16hrs
Test temp:60±2°C

No effect

A5.3 Completed Closure
A5.3.1 Test environment conditions
temperature:15-35℃
relatively humidity:45-75%
atmosphere pressure:80-106kPa


Test  methods and conditions

Requirement

A5.3.2Appearance

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.

No defects which will affect the product performance

A5.3.3 Tightness test

According to YD/T590-1 requirements
Immerse in water bath at
Temp: 23±3℃ Time:15 min
Internal Regulated
Pressure: 35±2Kpa

No leakage

A5.3.4 Temperature cycling test

According to YD/T590-1 requirements
Highest Temp: 60±2℃
Lowest temp: -30℃±2℃
Dwell time: 4hours
Transition time: 2 hours
Cycle duration; 12 hours
Internal regulated
Pressure; 35±2Kpa
Number of cycles: 10

Tightness as per 5.3.3

A5.3.5
High temperature tightness test

According to YD/T590-1-5.5 requirements Temp: 60±2℃
Pressure; 35±2Kpa
Time: 168h

Tightness as per 5.3.3

A5.3.6 Axial tension test

According to YD/T590-1-5.6 requirements
Time: 8 hours each cable
Load: D/45×1000N
(700N±10N max)
Internal Regulated
Pressure: 35±2Kpa

Tightness as per 5.3.3

A5.3.7 Bending test

According to YD/T590-1-5.7 requirements Clamping distance: 10×D from closure edge(min 250 mm)
Force: max 500N or 45 deg
Bend. Internal regulated
Pressure: 35±2Kpa
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

Tightness as per 5.3.3

A5.3.8 Tension test

According to YD/T590-1-5.7 requirements Torque: 50 Nm. Or 90 deg rotation
Clamping distance: 10×D from closure edge(D=outer dia Of cable)
2 complete torsion cycles per cable. Internal regulated Pressure: 35±2Kpa
cycle: Twist cable and hold for 5 minutes; bring cable back to starting position

Tightness as per 5.3.3

A5.3.10 Static Load test

According to YD/T590-1-5.7 requirements Load: 1000N/5sq cm
Load application: 90° from seam, Int, regulated pressure: 35±2Kpa
Time: 5 min remove load, turn sample through 180°, reapply load for 5 min

Tightness as per 5.3.3

A5.3.11
Impact 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±2Kpa
Temp: -15℃
Internal regulated
Pressure: 35±2Kpa
(Channel closing)

Tightness as per 5.3.3

A5.3.12
Vibration test

According to YD/T590-1-5.7 requirements Vibration: 10Hz
Amplitude: 3mm (6mm peak to peak)
Time: 6days
Clamping distance:10×D from closure edge.(D=the cable outer dia)
Internal regulated
Pressure: 35±2Kpa

Tightness as per 5.3.3

A5.3.13
Resistance to stress cracking

According to YD/T590-1-5.7 requirements
Test temp: 50±2℃
Internal regulated pressure: 35±2Kpa
Test medium: 10% igepal
Solution test time: 7 days

Tightness as per 5.3.3

A6.Inspection, please see documents (Q/proservice-12-01-1999 Inspection and Test Status)

A7. Marking package transportation and storage
A7.1 Printed marking shall be distinct even after shrinking.
A7.1.1 On the outer surface of the sleeve, following shall be printed
i)                     Product size
ii)                    Manufacture logo or name
iii)                   Manufacturing batch
iv)                  Or Purchase order No& date
A7.1.2 The closure shall be supplied in a kit form, marking and documentation within and outside the packages shall comply strictly with following requirements or shall be expressly provided for in the contract 
v)                   Manufacturer
vi)                  Product name
vii)                 Size
viii)                Manufacturing date or batch
ix)                  Manufacturing batch
x)                   Suitable cable’s diameter
xi)                  Checker stamp
A7.2 Package
A7.2.1 The packing unit is paper case which shall be sufficient to with stand during transit and upon storage.
A7.2.2 Packing case size and weight shall take into consideration, where appropriate, the remoteness of the goods final destination aid the absence of heavy handling faculties at all point in transit.
A7.2.3 The packing list and operation instruction shall be inside.
A7.2.4 The closure offered shall be proven one unit, marking and documentation within and outside the packages shall comply strictly with following requirements or shall be expressly provided for in the contract 
xii)                 Manufacturer
xiii)                Product name
xiv)               Size
xv)                Manufacturing date or batch
xvi)               Marking for keeping from dry and hot

A7.3 Transportation and storage
A7.3.1 Package shall be prevent from exposure to extreme environment, and precipitation during transit and upon storage.
A7.3.2 Products shall be storage in house.