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  • Product description and use method:

    ZN-10 / 8 indoor plastic pillar insulator

    I. Overview of indoor pillar insulators

    Indoor pillar insulators are used in indoor power stations with a rated voltage of 6 ~ 35kV, substation power distribution devices and electrical equipment to insulate and fix conductive parts.
    Insulators are suitable for ambient temperatures ranging from -40 ° C to + 40 ° C. The altitude of the installation site does not exceed 1000m for ordinary types and the height of the prototype does not exceed 4000m.
    According to the structure of the insulator, the insulator is divided into three types of structure: the outer glue, the inner glue and the joint glue. The insulators are classified according to the rated voltage and bending strength grade as follows:

    Rated voltage

    kV

    Bending strength kN

    Outer plastic

    Inner plastic

    United rubber

    6

    7.5 3.75 , 7.5

    4

    10

    7.520 3.75 , 7.5 , 20

    (7)816 4 , (7) , 8 , 16

    4

    20

    20

    30

    35

    (7.5)

    (7.5)8 4 , (7.5) , 8

    Note: () in the table indicates non-standard grade


    Brief introduction of insulator structure

    The insulator is made of porcelain and the upper and lower metal accessories are glued together with an adhesive. The end parts of the porcelain parts and the metal parts of the plastic parts are fitted with elastic pads. The plastic parts of the porcelain parts are sanded, knurled, and grooved to ensure mechanical strength and prevent loosening and twisting. The surface of the porcelain pieces is evenly white-glazed, and the surface of the metal accessories is painted with gray magnetic paint.
    The main structure of insulator porcelain has two types of cavity partition (breakable) structure and solid (non-breakable) structure. Joint glued post insulators are generally solid, non-breakable structures. The latter structure improves the safety and reliability and reduces the maintenance and testing workload compared with the former structure.
    There are two types of insulator ceramics: polygonal or less angular. Polygonal shape increases the creepage distance and its electrical performance is better than less prismatic. Except for the outer plastic pillar insulators that will be phased out, the rest of the products are polygonal.
    The inner glued structure, because the metal attachment is glued into the hole of the porcelain, correspondingly increases the insulation distance, improves the electrical performance, and also reduces the space occupied by the installation. However, because the inner glue is not good for improving the mechanical strength, Insulators that require high mechanical strength should be combined with rubber (that is, the upper attachment is inner rubber, and the lower attachment is outer rubber).

    Third, technical standards

    Indoor pillar insulators are manufactured according to the national standard GB8287.1 ~ 8287.2 "High-voltage pillar porcelain insulators".

    4. Model description

    Z——Indoor and outdoor plastic pillar insulators;
    ZN——Indoor glued pillar insulator;
    ZL——Indoor jointed pillar insulator;
    For outer rubber pillar insulators, the letter L in front of the dash indicates a polygonal shape, and the letters A, B, and D indicate mechanical damage loads of 3.75, 7. 5, 20kN, respectively. The fraction after the letter, the numerator represents the kilovolt of rated voltage, and the denominator is the number of mechanical damage load kN.
    N——The upper and lower attachments of the inner rubber are single screw holes;
    Y——The outer attachment and the lower attachment of the joint installation are round;
    T——The outer part of the outer package is oval;
    F——The bottom of the outer package is square;
    G——high prototype (old product is GY)


    Five, appearance and installation dimensions

    model

    Drawing number

    The main size mm

    Weight kg

    H

    D

    h1

    h2

    d

    d1

    d2

    a1

    a2

    ZN-6 / 4

    10-6

    100

    78

    18

    20

    60

    2-M8

    M12

    18

    -

    1.25

    10-6

    100

    78

    18

    20

    60

    M12

    M12

    -

    -

    1.25

    ZN-10 / 4

    10-6

    120

    82

    18

    20

    62

    2-M8

    M12

    18

    -

    1.6

    ZN-10 / 8

    10-6

    120

    100

    18

    25

    82

    2-M10

    M16

    twenty four

    -

    2.55

    ZN-10 / 8N

    10-6

    120

    100

    18

    25

    82

    M16

    M16

    -

    -

    2.55

    ZN-10 / 16

    10-7

    170

    160

    18

    30

    100

    2-M12

    M20

    36

    -

    8.0

    10-8

    205

    190

    15

    20

    68

    4-M12

    4-M16

    40

    65

    15.0

    10-9

    320

    130

    20

    40

    70

    M10

    M16

    -

    -

    8.1

    10-10

    320

    130

    25

    75

    80

    2-M10

    M16

    30

    -

    10.1

    model

    Rated voltage kv

    Power frequency voltage kv rms

    Full-wave impulse withstand voltage kv peak

    Bending and tensile failure load kN

    Dry tolerance

    breakdown

    ZN-6 / 4

    6

    36

    58

    60

    4

    6

    36

    58

    60

    4

    ZN-10 / 4

    10

    47

    75

    80

    4

    ZN-10 / 8

    10

    47

    75

    80

    8

    ZN-10 / 8N

    10

    47

    75

    80

    8

    ZN-10 / 16

    10

    47

    75

    80

    16

    20

    75

    120

    125

    30

    35

    110

    -

    195

    75

    35

    110

    -

    195

    75


    Six, ordering instructions

    1. Specify the model and factory code when ordering.
    2. The drawing numbers are for reference. There are porcelain pieces with umbrella skirts with nominal creepage distances indoors.

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