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  • Product description and use method:

    SN10-10 (C), SN10-35 (Kv) series indoor high voltage and low oil circuit breaker

    I. Overview

    SN10-10 series oil-free circuit breaker is composed of frame, fuel tank and transmission part. The frame is equipped with opening limiters, closing buffers, opening springs and 6 supporting insulators . The transmission part includes the main shaft of the circuit breaker, the insulation rod and so on. The fuel tank is fixed on a supporting insulator.
    The arc extinguishing chamber of this circuit breaker is designed to work in combination with vertical and horizontal blowing and mechanical oil blowing, which can effectively extinguish large, medium and small currents in a short time. SN10-10 type I. Type II and SN10-10III / 1250-40 are single-barreled structures, and SN10-10 / III / 2000-40 and SN10-10 / 3000/40 are additional double-barreled structures, because the auxiliary barrel does not generate arc Therefore, its contacts do not need arc-resistant alloys and arc-extinguishing chambers.


    Second, the main technical parameters

    Rated current ( KA )

    Lightning impulse withstand voltage (full wave) KV

    Rated current ( A )

    Rated short-circuit breaking current ( KA )

    Rated peak withstand current ( KV )

    Rated short-circuit duration ( S )

    Overall weight ( KG )

    10

    75

    630

    40

    4

    100

    1000

    16

    50

    120

    1250

    20

    60

    140

    2000

    31.5

    80

    170

    3000

    40

    125

    190

    Test items

    unit

    Eligibility criteria

    Type I

    Type II

    1250 Type III 1250

    3000 III type 3000

    Upper end distance of conductive rod in closing position

    Upper end of wiring

    mm

    ± 1.5 130 ± 1.5

    End face of flange

    106

    -

    Upper end of contact frame

    ± 1.5 120 ± 1.5

    136

    +1

    136

    +1

    2

    2

    Stroke of conductive rod

    Main tube

    mm

    145

    + 4

    155

    + 4

    157

    + 4

    157

    + 4

    3

    Pay tube

    3

    3

    3

    66

    + 4

    3

    Loop resistance

    μΩ

    100

    60

    40

    17

    Low voltage rigid closing speed

    m / s

    3

    3.8

    4

    4

    Closing speed

    3.5

    40

    4

    4

    Closing speed

    3 + 0.3

    Three-phase opening in different periods

    ms

    三相尺寸之差免试≯ 2; the difference between three-phase size is exempt 2mm

    Power frequency withstand voltage

    42KV, 1mm No breakdown flashover

    Oil pressure resistance

    Not lower than 25KV

    Third, the external installation dimensions

    model

    Dimensions (mm)

    x

    y

    A

    B

    C

    D

    Φ

    /630 SN10-10 / 630

    475

    815

    50

    20

    40

    /

    13

    /1000 SN10-10 / 1000

    475

    815

    80

    20

    40

    40

    13

    /1000 SN10-10 / 1000

    485

    858

    80

    20

    40

    40

    13

    /1250 SN10-10 / 1250

    497

    925

    100

    25

    50

    50

    18

    /2000 SN10-10 / 2000

    647

    925

    100

    25

    50

    50

    18

    /3000 SN10-10 / 3000

    632

    925

    100

    25

    50

    50

    18

Copyrght 2010-2012 Yueqing Chuantai Power Equipment Co., Ltd. All Rights Reserved Tel: 0577-62755895 Fax: 0577-62759767 Mobile: 13986710797 Zhejiang ICP No. 11039091-1
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