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Protective Fittings

Protective Fittings

Application: Mainly used to protect conductor and insulator, etc., such as grading ring protecting insulators, counter weight keeping insulator string downwards, damper and armor rod preventing conductor galloping.

Product Details

Application:

Mainly used to protect conductor and insulator, etc., such as grading ring protecting insulators, counter weight keeping insulator string downwards, damper and armor rod preventing conductor galloping. It should enable the protected target to stand the aeolian vibration, yet causing no fatigue damage. It undertakes certain amount of mechanical load.


Category:

Including damper, preformed armor rod (FYH type), aluminum tape, weight assemble, counter weight, spacer, grading and shielding ring, etc.

1) Dampers can be further divided into several types, e.g. FD, FG, FF, FR, FDZ, etc

2)Spacers have cross type spacer-damper, square frame type spacer-damper (JZF/JZFD type), rectangular frame spacer-damper (JZJD type), anti-gallop type spacer (JZ), rectangular frame spacer-damper with anti-gallop device, spacer-damper for six-bundle conductor (FJZ type), jumper spacers for six-bundle conductor(FJT type), spacer for four-bundle conductor (for lines of 330kV),

spacer for three-bundle conductor (for lines of 330kV), jumper spacer of type JTZ/JTGF/JT, spacers for jumpers of 500kV, spacers for two-bundle conductor(JJB2/JZQ type), etc.

3)Grading and shielding rings contains types for lines of 500kV, 300kV, etc.

4)Generally made of malleable cast iron, steel and aluminum alloy. All ferrous metals are hot-dip galvanized.


Note: 

Based on type and application, products to be introduced herein is divided into 6 categories, namely, suspension clamp, strain clamp, link fitting, splicing fitting, protective fitting, guy wire fitting. 

Based on product structure and function, each category can be further divided into several series. 

1.Product type code consists of phonetic alphabet, Arabic numbers and additional letter. Each part refers to the following meaning: 

QQ截图20170608114920.png

2.For strain clamps and slicing sleeves of compression type, only the sleeve OD, applicable conductor specification or type are available herein. See attachment for conductor parameter. 

3.For suspension clamps, parallel groove clamps and dampers, the calculation of applicable conductor diameters listed herein have taken into account of the wrapping and winding material.

4.For products not included herein, customized manufacturing service is available. 

5.For bolt type electric fittings, the recommended bolt tightening torque is as follows: (4.8 Class)

(mm)Bolt Dia.

8

10

12

14

16

18

20

(N.m)Tightening torque

13

22

36

50

65

83

105

6.The technical parameters of the introduced electric fittings herein conform to GB/T2314-2008, General Technical Requirements of Electric Fittings, IEC61284/IEC61897, and other relevant standards.


If you are in need of protective fittings, welcome to buy the quality and discount products with low price from our factory. Known as one of the leading manufacturers and suppliers, we must be your best choice. Check the price list and the quotation with us now.

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