Heat Shrink High Voltage Joints

HV Heat Shrink Joint. Polymeric insulated cables of various designs can be adapted with respect to shielding and metal sheath. Raychem heat shrink accessories have been used by utilities and industrial companies around the world for over 40 years. The ongoing field experience makes Raychem a leader in materials science and technology for high voltage applications. The materials used in TE Connectivity Raychem cable accessories are extensively optimized with respect to product design, function, manufacturing and expected service environment.

Parameter

Heat-shrinkable stress control sleeves
Torque-controlled connector
Water and corrosion-resistant
Joint fits on all polymeric cable constructions
Proven shield continuity concept
Short cut-back dimension
Cable size transition possible
Unlimited shelf life under normal storage conditions
Suitable for wide range of mechanical connectors
Tested under International standards

Sr. No.  

Particulars  

Specifications  

Applicable Standards 

IEC 60840 

Nominal System Voltage 

66kV Phase to Phase 

Highest System Voltage 

72.5kV 

Impulse Voltage at 95 to 1000C temperature 

325kV (Peak) 

Frequency 

50 Hz. 

AC High Voltage withstand test 15 min dry 

95 kV 

Partial Discharge Test at Ambient 

Pre-Stressed at 1.75U0 (67kV) 10sec 

Measured at 1.5U0 (57kV)  

Less than 5pC 

Partial Discharge Test at Elevated (95-1000C)  

Pre-Stressed at 1.75U0 (67kV) 10sec 

Measured at 1.5U0 (57kV) 

Less than 5pC 

Heating Cycle Voltage Test 

 
  1. Total Duration of one cycle 

24hr 

  1. Duration of Heating period 

8hr 

  1. Duration of natural cooling period 

16hr 

  1. Temp. of conductor during heating 

95 to 1000C 

  1. AC voltage applied during test 

76kV 

  1. No. of cycles 

20 

10 

Short Circuit Current 

Same as cable size subject to max. Conductor temperature of 250oC  

11 

Creepage (outdoor) 

2300mm min. 

12 

Accessories 

Mechanical connectors (if ordered separately for terminations) 

13 

Method of Stress Control 

Heat Shrinkable type 

14 

Tubing’s & Molded parts 

Heat Shrinkable type 

15 

Non-Tracking material  

As per ASTM D-2303 

16 

Di-electric strength of insulating material 

10 kV/mm min 

Heat Shrink Type Indoor/Outdoor Termination and Straight Through Joint for 66kV (E)   

CPRI

More info available on request
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