66kv Fully Prefabricated Type Insulating Joint

66kv Fully Prefabricated Type Insulating Joint

US$2,400.00-3,000.00 3 Sets (MOQ)

Basic Info.

Model NO.
YJJJI
Voltage
38/66kv
Material
Silicone Rubber
Color
Grey
Usage
Connect Cable
Standard
IEC60502
Transport Package
Wooden Case
Specification
240-1600mm2
Trademark
9V
Origin
China
HS Code
8535900090
Production Capacity
50000sets/Year

Packaging & Delivery

Package Size
100.00cm * 100.00cm * 100.00cm
Package Gross Weight
100.000kg

Product Description

66-220kV High Voltage Cable Accessories
Our company provides the voltage level of 48/66kV, 64/110kV, 127/220kV and other series of cable accessories are all in accordance with IEC 60502, IEC 60840, IEC 62067, IEC 60859, IEC 62271-209, GB/T 11017, GB/T 18890, GB/T 12706, GB 311, GB 772, DL508, DL509, JB/T8144 and other standards, and have passed the stringent factory test, type test, pre-qualification test.
One piece pre-molded straight joint/sectionalizing joint
Scope of application
For cross linked polyethylene insulated power cables 240-3000mm2.
Suitable for large-scale chemical industry, iron and steel, power substations, coastal areas.
Features
The main body is a monolithic prefabricated structure, i.e. insulation, shielding and stress cone in one piece.
The stress cone is made of imported liquid silicone rubber injection molding, with a long and stable holding force and electric field uniformity.
Compact structure, small size, light weight, easy to install.
The shell is protected by an insulated, magnetically isolated metal protection box with good mechanical properties and good sealing.
Structure & Size
1,glass fiber
2,copper shell
3,stress cone
4,insulation of cable
5,epoxy insulating insulation
6,connecting pipe
7,shielding tiles
8,prefabricated body
9,coaxial cable
10,cable
Size / mm 38/66kV 50/66kV 64/110kV 76/132kV 127/220kV
L 1300 1300 1500 1500 1800
A 1900 1900 2100 2100 2400
Test Specification
All test classifications and codes:
No.# Test Name Code
1 Routine test R
2 Sample test S
3 Type test T
4 Pre-qualification test P
5 Additional test A
The following routine tests are performed on stress cones, epoxy bushings of GIS terminals and prefabricated intermediate joints of each product at 66kV and above.
Item Voltage
38/66kV 50/66kV 64/110kV 76/132kV 127/220kV
Partial discharge 54kV, no detectable local discharge over background 72kV, no detectable local discharge over background 96kV, no detectable local discharge over background 114kV, no detectable local discharge over background 190kV, no detectable local discharge over background
The power frequency withstand voltage 90kV/30min 125kV/30min 160kV/30min 190kV/30min 318kV/30min
Sealing Seal fittings, porcelain bushings, composite bushings for 0.25±0.01MPa/1h, no leakage
The epoxy casing was subjected to 0.6~0.7MPa/1h with no leakage.
Appearance The products are free of damage, cracks, and other defects that may affect the quality and appearance of the products.
66-220kV Main Test Parameters
Item Standard Test Category Product Category
48/66kV 64/110kV 127/220kV Porcelain Sleeve Terminal Composite Sleeve Terminal GIS terminal Straight / Insulated Joint flexible terminal
Sealing Fittings, Porcelain, Composite Sleeves 0.25±0.01MPa/1h, no leakage R yes yes yes - -
Epoxy Sleeve 0.6~0.7MPa/1h, no leakage
Partial discharge of prefabricated parts 72kV 96kV 190kV R yes yes yes yes yes
Detects no more than background discharge
Frequency withstand voltage of prefabricated parts 120kV 160kV 318kV R yes yes yes yes yes
30min,no flashover, no breakdown
Partial discharge at room temperature 72kV 96kV 190kV T yes yes yes yes yes
Detects no more than background discharge
Thermal cycling voltage test 96kV 128kV 254kV T yes yes yes yes yes
20 cycles, no flashover, no breakdown
Partial discharge test at high temperature 72kV 96kV 190kV T yes yes yes yes yes
Detects no more than background discharge
Lightning impact test and subsequent frequency withstand voltage test 450kV 550kV 1050kV T yes yes yes yes yes
10 times for each positive and negative polarity
120kV 160kV 318kV
15min, no flashover, no breakdown
Directly buried joint outer protective layer immersion voltage test Two ends impact among the 60/75kV,an end of hit 30/37.5kV Two ends impact among the 60/95kV,an end of hit 30/47.5kV T - - - yes -
Sealing test after assembly of accessories 0.25±0.01MPa/1h, no leakage T yes yes yes yes yes
Outdoor terminal rain frequency voltage test 140kV 185kV 460kV T yes yes - - yes
1min, no flashover, no breakdown
Pillar insulator voltage test 20kV/1min, no flashover, no breakdown T yes yes - - -
Radio interference test for outdoor terminals 61kV 81kV 140kV A yes yes - - yes
1MHz radio interference, voltage ≤ 450μV 1MHz radio interference, voltage ≤ 500μV
Accessory specimen test Visual inspection of accessory systems containing cables with no signs of deterioration that could affect the normal operation of the system T yes yes yes yes yes
DC voltage test / No breakdown between conductor and metal shield in connector, 20kV/1min. T - - - yes -
Performance test of crimped connectors for conductor connecting rods The total area after crimping is not more than 1.2 times the resistance of an equal length of conductor of the same cross-section. T yes yes yes yes yes
Company Profile
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