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  • RN1, RN3 double tube high voltage fuse

    Guide: RN1, RN3 double tube high-voltage fuse tags (tags): RN1 , RN3 , high-voltage fuse ,
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  • Product description and use method:

    RN1, RN3 double tube high voltage fuse

    I. Overview

    RN1, RN3 indoor high-voltage current-limiting fuses are used for overload and short-circuit protection of power lines. The so-called line is the function of the fuse to cut off the short-circuit current before it reaches the peak.
    Fusing characteristics: When the current through the fuse is 1.3 times its rated current, it will not fuse for 1 hour.

    Use of fuse

    RN1, RN3 high-voltage indoor fuses are used for overload and short-circuit protection of power lines. This fuse has a large cutting capacity and can also be used to protect the road branched out by the power system. When the short-circuit current of the line reaches the maximum, it will blow The device cuts the line, so it is the recommended appliance to protect electrical equipment from damage.

    Third, the fuse structure

    RN1, RN3 type fuses are composed of two pillar insulators , contact bases, and fuse tubes and seat plates. The post insulator is installed on the seat plate, the contact seat is fixed on the post insulator, and the fuse tube is fixed in the contact seat, but the copper caps at both ends are wound on the porcelain tube. The fuse in the fuse tube is used according to the rated current. One or more fuses are wound on a core with a core (with a rated current of less than 7.5A) or spirally installed directly inside the tube (with a rated current of more than 7.5A) and then filled with quartz sand, with copper caps at both ends The end cap is pressed tightly and tinned tightly to keep the seal.
    When the overload current or short-circuit current is passed, the fuse is immediately blown, and an arc is generated at the same time. The quartz sand immediately extinguishes the arc. When the fuse is blown, the spring wire is also blown out and ejected from the spring. Device to complete the task.

    Fourth, the fuse instructions

    ※ The RN1, RN3 type indoor-filled quartz sand fuses are suitable for:
    (1) The altitude is not higher than 1000 meters.
    (2) The temperature of the surrounding medium is not higher than + 40 ° C and not lower than -40 ° C.
    ※ The RN1 and RN3 fuses cannot work in the following environments:
    (1) Indoor places with relative humidity greater than 95%.
    (2) Some places where the burning cargo is dangerous.
    (3) Places subject to severe vibration, swing or impact.
    (4) Areas where the altitude exceeds 2000 meters.
    (5) Air pollution areas and special humid places.
    (6) Special places (eg for X-ray installations).

    Five, appearance and installation dimensions

    Product number

    Rated voltage

    Rated current

    Main dimensions

    A

    a

    L

    H

    b

    RN1,3-3 / 150

    3

    150

    260

    400

    450

    350

    108

    RN1,3-3 / 200

    200

    RN1,3-6 / 100

    3

    100

    360

    500

    550

    RN1,3-6 / 150

    150

    RN1,3-6 / 200

    200

    RN1,3-10 / 75

    10

    75

    460

    600

    650

    RN1,3-10 / 100

    100

    Product number

    Rated voltage

    Rated current

    Main dimensions

    A

    a

    L

    h2

    h1

    H

    b

    RN1,3-3 / 300

    3

    300

    260

    400

    450

    201

    247

    389

    108

    108

    RN1,3-3 / 400

    400

    RN1,3-6 / 300

    6

    300

    360

    500

    550

    201

    247

    389

    RN1,3-10 / 150

    10

    150

    460

    600

    650

    226

    272

    414

    RN1,3-10 / 200

    200

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