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Fritz Driescher & Söhne GmbH
Indoor Disconnectors, Fuse Bases, Earthing Switches

Indoor Disconnectors, Fuse Bases, Earthing Switches

Product catalog summary

Overview: The document outlines the technical specifications and descriptions for DRIESCHER indoor disconnectors, fuse bases, and earthing switches, designed for medium voltage switchgear applications in compliance with EN 62271-102 standards.

Specifications:

Rated Voltages: Options include 12 kV, 24 kV, 36 kV, and 38.5 kV.
Rated Currents: Available in 630 A, 1600 A, 2500 A, 4000 A, and 6300 A.
Short Time Current: Disconnectors support up to 63 kA, while earthing switches support up to 31.5 kA.

Components:

3-pole Indoor Earthing Switches: Offered for 12 kV, 24 kV, 36 kV, and 38.5 kV with short-time currents of 20 kA and 31.5 kA.
3-pole Indoor Disconnectors: Designed for currentless switching with rated currents from 630 A to 6300 A.
1-pole and 2-pole Indoor Disconnectors: Tailored for specific voltage and current needs.

Technical Description:

Equipped with energy storage mechanisms for rapid switching.
Base frames are zinc-plated and chromated; current paths are silver-plated.
Contacts are made from electrolytic copper with rustproof pressure springs.

Operating Conditions:

Suitable for installation up to 1000 m above sea level; adjustments required for higher altitudes.
Temperature limits: +40°C peak, +35°C average over 24 hours, -5°C minimum.

Accessories:

Signalling switches and motor drives (UM 10 and 50) available for all models.
Optional earthing switches and mechanical interlocks for enhanced safety.

Drawings and Mechanical Life: Each component type includes specific drawings and mechanical life specifications for proper installation and operation.

Fuse Bases:

Available in single-pole and three-pole configurations with rated voltages of 12 kV, 24 kV, and 36 kV, and a rated current of 200 A.
Dimensions include 'e' for fuse length: 292 mm, 442 mm, and 537 mm for 12 kV, 24 kV, and 36 kV respectively.
Electrical ratings: 50 Hz frequency, power frequency withstand voltages of 28 kV, 50 kV, and 70 kV, and impulse withstand voltages of 75 kV, 125 kV, and 180 kV.

Procedures and Recommendations:

Refer to list 791 for high voltage high breaking capacity (h.v. h.b.c.) fuses.
See list 773 for fuse handles.
Consult list 776 for indoor actuators.

Additional Features:

Motor drives and various actuator types available depending on mounting type.

Notes:

All dimensions, weights, diagrams, and descriptions are non-binding and subject to change without notice.
Printed on chlorine-free bleached paper for environmental considerations.

Catalog excerpts

Indoor Disconnectors, Fuse Bases, Earthing Switches-1

DRIESCHER Indoor Disconnectors, Fuse Bases, Earthing Switches • Rated voltages Ur 12 kV, 24 kV, 36 kV and 38,5 kV • Rated currents Ir 630 A, 1600 A, 2500 A, 4000 A and 6300 A ITr ELEKTROTECHNISCHE WERKE FRITZ DRIESCHER & SÖHNE GMBH D-85366 MOOSBURG • TEL. +49 87 61 6 81-0 • FAX +49 87 61 68 11 37 http://www.driescher.com [email protected]

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Indoor Disconnectors, Fuse Bases, Earthing Switches-2

731 DRIESCHER - Indoor Disconnectors, - Fuse Bases, - Earthing Switches acc. to EN 62271-102 General, Operating conditions, Technical description 3-pole Indoor - Earthing Switch ES 12-.. ; (Ur 12 kV) 3-pole Indoor - Earthing Switch ES 24-.. ; (Ur 24 kV) 3-pole Indoor - Earthing Switch ES 36-.. ; (Ur 36 kV and 38,5 kV) 2-pole Indoor - Disconnector ITr ..-630-20-2 ; (Ur 12 kV and 24 kV) special design Indoor Fuse Bases for h.v. h.b.c. fuses with rated currents of up to 200 A Examples mounted on motor drives General The 1-, 2- and 3-pole Disconnectors ITr are applicable for a rated voltage range...

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Indoor Disconnectors, Fuse Bases, Earthing Switches-3

DRIESCHER - 3-pole Indoor Earthing Switches 3-pole Indoor Earthing Switch Type ES 12-.. ; (Ur 12 kV) Accessories: • Signalling switches Rated short time current lk Rated duration of short-time circuit Rated peak withstand current Rated short-circuit making current Rated impulse withstand voltage Rated power frequency withstand voltage Ud Mechanical life Weight approx.

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Indoor Disconnectors, Fuse Bases, Earthing Switches-4

DRIESCHER - 3-pole Indoor Earthing Switches 3-pole Indoor Earthing Switch Type ES 24-.. ; (Ur 24 kV) Accessories: • Signalling switches Rated voltage Rated frequency Rated short-time current Rated duration of short-time circuit Rated peak withstand current Rated short-circuit making current Rated impulse withstand volt; Rated power frequency withstand voltage Ud Mechanical life Weight appn Measures x and y according declaration

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Indoor Disconnectors, Fuse Bases, Earthing Switches-5

DRIESCHER - 3-pole Indoor Earthing Switches 3-pole Indoor Earthing Switch Type ES 36-.. ; (Ur 36 a. 38,5 kV)

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Indoor Disconnectors, Fuse Bases, Earthing Switches-6

DRIESCHER - 3-pole Indoor Disconnectors Rated voltage Rated frequency Rated current Rated short time current Rated duration of short-time circuit Rated peak withstand current Rated impulse withstand voltage Rated power frequency withstand voltage Mechanical life Motor drive opt. Earthing switch (see page 3) Weight approx. ** 2 Motor dirves necessary • Signalling switches • Earthing switch 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nuts DIN 934 ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-7

DRIESCHER - 3-pole Indoor Disconnectors 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nuts DIN 934 ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-9

DRIESCHER - 3-pole Indoor Disconnectors Rated voltage Rated frequency Rated current Rated short time current Rated duration of short-time current Rated peak withstand current Rated impulse withstand voltage Rated power frequ. withstand voltage Ud Mechanical life Motor drive opt. Earthing switch (see page 4) Weight approx. • Signalling switches ** 2 motor drives necessary 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nut DIN 934 ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-10

DRIESCHER - 3-pole Indoor Disconnectors 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nut DIN ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-12

DRIESCHER - 3-pole Indoor Disconnectors Rated voltage Rated frequency Rated current Rated short time current Rated duration of short-time current Rated peak withstand current Rated impulse withstand voltage Rated power frequency withstand voltage Mechanical life Motor drive opt. Earthing switch (see page 5) Weight approx •Rated short-circuit making current I, mech. interlock between disconnector Signalling switches 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nut DIN 934 ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-13

DRIESCHER - 3-pole Indoor Disconnectors 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nut DIN 934 ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-14

DRIESCHER - 3-pole Indoor Disconnectors Rated voltage Rated frequency Rated current Rated short time current Rated duration of short-time current Rated peak withstand current Rated impulse withstand voltage Rated power frequency withstand voltage Mechanical life Motor drive opt. Earthing switch (see page 5) Weight approx. • Earthing switches • mech. interlook between disconnector • Signalling switches •Rated short-circuit making current lma limited to 50 kA!

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Indoor Disconnectors, Fuse Bases, Earthing Switches-15

DRIESCHER - 3-pole Indoor Disconnectors 1) Hexagon screw M12 with 2 spring washers DIN 6796 and nuts DIN 934 ISO 4032

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Indoor Disconnectors, Fuse Bases, Earthing Switches-16

731 DRIESCHER - 1-pole Indoor Disconnectors 1-pole Indoor Disconnector Type ITr ..-630-20-1 Type Rated peak withstand current Ratet impulse withstand voltage - Phase to Earth Rated short time current Rated duration of short-time current Rated frequency Rated current Rated voltage - Across the Open Gap Rated power frequency withstand voltage - Phase to Earth - Across the Open Gap Drawing no. Mechanical life Motor drive Weight approx. Accessories: • Signalling switches • Motor drive UM 10 and 50 • Earthing switch or earthing equipment Fig.: ITr 12-630-20-1 Drawing for ITr 24-630-20-1 / Drawing...

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Indoor Disconnectors, Fuse Bases, Earthing Switches-17

731 DRIESCHER - 1-pole Indoor Disconnectors 1-pole Indoor Disconnector Type ITr ..-1600-40-1 ITr 12-1600-40-1 Type Rated voltage Rated frequency Rated current Rated short time current Rated duration of short-time circuit Rated peak withstand current Rated impulse withstand voltage - Phase to Earth - Across the Open Gap Rated power frequency withstand voltage - Phase to Earth - Across the Open Gap Drawing no. Mechanical life Motor drive Weight approx. Accessories: • Signalling switches • Motor drive UM 10 and 50 • Earthing switch or earthing equipment Fig.: ITr 24-1600-40-1 Drawing for ITr ..-1600-40-1...

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Indoor Disconnectors, Fuse Bases, Earthing Switches-18

731 DRIESCHER - 2-pole Indoor Disconnectors 2-pole Indoor Disconnector Type ITr ..-630-20-2 ; (Ur 12 u. 24 kV) Type Rated voltage Rated frequency Rated current Rated short time current Rated duration of short-time current Rated peak withstand current Rated impulse withstand voltage - Phase to Earth - Across the Open Gap Rated power frequency withstand voltage - Phase to Earth - Across the Open Gap Drawing no. Mechanical life Motor drive Earthing switch Weight approx. (without Motor drive) Regarding higher current power please ask us for consultation. Accessories: • Signalling switches • Motor...

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