High Voltage Suspension Insulator U160BL Toughed Glass Insulator for Transmission Line
Product Overview
● Model: U160BL
• U Refers To Disc Suspension Insulator
• B For Ball And Socket Type
• L Stands For Long Steel Foot
● Type: Standard Profile Toughened Suspension Type
● Rated mechanical load: 160 kn (about 16 tons)
● Purpose: Usually used for transmission lines with voltage levels of 110kV, 220kV, 500kV, and higher. As a suspension insulator, it forms an insulator string and suspends wires or ground wires. Used to withstand the tension of wires in high stress locations such as corner towers and terminal towers.
● The product model is in accordance with GB/T 7253-2005 and JB/T9683-2012(EC60305:1995MOD)
● The connection structure is in accordance with GB/T4056-2008(IEC60120:1984,MOD) and BS 3288 part lll.
● According to customer requirements, the locking pin can be either W-pin or R-pin.
● lf there is no special instruction, R pin is used for U160BL.
Structure and materials
-
Material characteristic
• High mechanical strength: The U160BL's mechanical and electrical failure load can reach 160KN due to the metal materials of the iron cap and steel base and the properties of the tempered glass itself.• Excellent insulation performance: tempered glass has good insulation performance, can effectively isolate the current between the wire and the earth, its power frequency wet withstand voltage up to 55KV, lightning impulse withstand voltage up to 140KV.• Strong corrosion resistance: iron cap and steel foot after anti-corrosion treatment, tempered glass also has good chemical stability, can resist a variety of harsh environmental conditions of corrosion and erosion.• Good self-cleaning performance: the glass surface is smooth, not easy to accumulate dirt, and can maintain a good clean state under rain wash, reducing the workload of manual cleaning. -
Shape size
• Height: The structural height is available in a variety of specifications, including 146 mm, 155 mm and 170 mm. The insulator's height can be selected based on the specific application scenario and voltage level.• Diameter: The diameter of the umbrella skirt of the glass insulator is larger, which can increase the creepage distance, improve the insulation performance, and reduce the possibility of flashover in a dirty environment.• Connection size: The connection size of the top iron cap and the bottom steel foot conforms to ISO cylindrical head structure, the head size is small, light weight, high strength, easy to connect with other fittings in the transmission line, and has good interchangeability.
key parameters
|
IEC designation |
U160BS/146 |
U160BM/155 |
U160BL/170 |
|
|
Diameter D |
mm |
280 |
280 |
280 |
|
Height H |
mm |
146 |
155 |
170 |
|
Creepage distance L |
mm |
400 |
400 |
400 |
|
Socket coupling |
mm |
20 |
20 |
20 |
|
Mechanical failing load |
kn |
160 |
160 |
160 |
|
Mechanical routine test |
kn |
80 |
80 |
80 |
|
Wet power frequency withstand voltage |
kv |
45 |
45 |
45 |
|
Dry lightning impulse withstand voltage |
kv |
110 |
110 |
110 |
|
Impulse puncture voltage |
P.U |
2.8 |
2.8 |
2.8 |
|
Power frequency puncture voltage |
kv |
130 |
130 |
130 |
|
Radio influence voltage |
μv |
50 |
50 |
50 |
|
Corona visual test |
kv |
18/22 |
18/22 |
18/22 |
|
Power frequency electric arc voltage |
ka |
0.12s/20Ka |
0.12s/20Ka |
0.12s/20Ka |
|
Net weight per unit |
kg |
6.7 |
6.6 |
6.7 |
Typical Installation Example
1.High voltage/ultra-high voltage overhead transmission lines
Voltage level: Usually used for transmission lines with voltage levels of 110kV, 220kV, 500kV, and higher.
Suspension string: As a suspension insulator, it forms an insulator string to suspend wires or ground wires.
Tension string: Used in high stress locations such as corner towers and terminal towers to withstand the tension of wires.
2.Special application scenarios
Large span lines: In high mechanical load areas such as crossing rivers and canyons, the U160BL's 160kN (approximately 16 tons) mechanical strength can meet the requirements.
Railway Electrification: Some high-speed railway catenary support insulators may use similar models.
Substation: Substation support or equipment connection insulation.
3.Typical Installation Example
Single string suspension: used for straight towers to vertically suspend wires.
V-shaped string: used for compact circuits or wind deviation control.
Double tension string: used for terminal towers or large angle towers.
Packaging method
● Three or five glass insulators are arranged in a string, and two strings are crossed and fixed in wooden boxes to ensure that they will not be bumped or damaged during transportation.
● Wooden boxes are evenly stacked on pallets and secured with plastic strapping.
● Each tray is wrapped in plastic film to protect the insulation from dust and dirt.
● The pallet itself can be stacked to ensure optimal utilization of space during transportation and storage.
● All wooden strips of wooden boxes and pallets have undergone high-temperature fumigation treatment.
● We can also wrap a layer of pearl cotton around the product to better protect it from scratches
● Other packaging methods: bamboo strip packaging
Contact Us
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Due to the time difference, we may not be able to reply to you immediately. We will reply to your email as soon as we start working.