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HM

HM
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HM

Product catalog summary
Overview: This document provides technical specifications and instructions for the HM Tap Changer CORE sub-assembly with TUBULAR Fixed Contacts, intended for use in oil-filled transformers. It covers switching units, control devices, and mounting instructions.
Specifications: The document details configurations of switching units such as BRIDGE, Series-Parallel (S-P), Star-Delta, and Common Output per Phase, with nominal voltages of 20/30 kV and rated currents of 30/63 A or 150 A. Each configuration includes the number of positions, bracket type, and angular steps.
Switching Units: Tables provide dimensions and specifications for switching units categorized by voltage class (20 kV and 30 kV) and current ratings (30 A and 63 A), including parameters like angular step and specific dimensions.
Fixed Contacts: Instructions for removing and mounting 150 A fixed contacts are provided, requiring a special tool (56265-HZ-HM). Threaded fixed contacts (26260-M8) are available upon request.
Control Devices: Sections 20 to 27 describe options and accessories for HM control devices, including shafts and mounting instructions.
Mounting Instructions: Detailed instructions for mounting control devices are provided on pages 28 to 33, ensuring proper installation and operation.
Key Features: The document highlights the adaptability of tap changers for various configurations and the importance of using specified tools for maintenance and installation. Threaded contacts are available for enhanced connectivity.
Universal Aluminium Knob Control Device: Specifications and mounting instructions for universal aluminium control devices, including knobs and handles, are detailed. These devices are padlockable and feature a cover drilling of Ø 27 mm H12, but are not compatible with 7-position 150A tap changers.
Specifications:
  • Ref. 43170-UNI: Universal aluminium knob with protective cover, padlockable.
  • Ref. 43168-UNI: Universal aluminium knob, padlockable.
  • Ref. 43167-UNI: Universal aluminium handle, padlockable.
  • Ref. 43167-UNI-FOLD: Universal folding aluminium handle, padlockable.
Mounting Instructions:
  • Ensure shaft pre-drillings and stuffing-box notches are perpendicular.
  • Insert the bracket into the Ø 27 mm hole of the transformer tank.
  • Follow the specified order for fitting components like O-rings, seal rings, spacers, washers, and nuts.
  • Block the nut with a minimum torque of 60 meter-Newton.
  • Install the control device in the reference position, aligning with the stuffing box notches.
Optional Features:
  • Anodic oxidation and primer painting for aluminium components.
  • Stainless steel options for certain components.
  • Silicone O-rings as an alternative to Viton.
Additional Components:
  • Optional aluminium protective cover (Ref. 26794) for certain control devices.
  • Numbering and repeater discs for position indication, available in clockwise and counter-clockwise configurations.
Recommendations:
  • Ensure correct alignment and torque specifications during installation to maintain device integrity and functionality.
  • Consider optional features for enhanced durability and performance in specific environments.
See more

Catalog excerpts

HM-1

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer Up to 150A SWITCHING UNITS: HM Tap Changer CORE sub-assembly with TUBULAR Fixed Contacts for cable crimping or brazing. Diagram Nominal Voltage Rated current BRIDGE BRIDGE BRIDGE Series-Parallel (S-P) Star-Delta Common Output per Phase Insulating Metal Insulating Insulating Metal Metal BRIDGE BRIDGE BRIDGE Series-Parallel (S-P) Star-Delta Common Output per Phase Insulating Metal Insulating Metal Metal Metal DOUBLE-CONTROL, 3-stage : one S-P + two BRIDGE DOUBLE-CONTROL, 3-stage : one S-P + two BRIDGE 150 A Fixed Contacts are REMOVABLE – Removal/mounting instructions: 150 A Fixed Contacts threaded: CONTROL DEVICES – Shafts, options & accessories: MOUNTING INSTRUCTIONS of the control devices: Email : [email protected] Website : http://www.appareils-precision.fr 20th January 202

 Open the catalog to page 1
HM-2

SWITCHING UNITS Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2022

 Open the catalog to page 2
HM-3

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – 30 and 63 A N = 3 to 7 positions – setting 2.5 % per position Angular Step Email : [email protected] Website : http://www.appareils-precision.

 Open the catalog to page 3
HM-4

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – 30 and 63 A N = 3 to 7 positions – setting 2.5 % per position Angular Step Email : [email protected] Website : http://www.appareils-precision

 Open the catalog to page 4
HM-5

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – 30 and 63 A N = 3 to 7 positions – setting 2.5 % per position Angular Step Email : [email protected] Website : http://www.appareils-precision.

 Open the catalog to page 5
HM-6

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer SERIES-PARALLEL – 20 / 30 kV – 30 and 63 A Angular Step Email : [email protected]

 Open the catalog to page 6
HM-7

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer STAR - DELTA – 20 kV – 30 and 63 A Email : [email protected] Website : http://www.appareils-precision.fr 20th January

 Open the catalog to page 7
HM-8

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer COMMON OUTPUT PER PHASE – 20 / 30 kV – 30 or 63 A N = 3 / 5 / 7 positions – setting 2.5 % per position Angular Step Email : [email protected] Website : http://www.appareils-precision.fr

 Open the catalog to page 8
HM-9

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – Up to 150 A N = 3 to 7 positions – setting 2.5 % per position REMOVABLE CONTACTS Angular Step Email : [email protected]

 Open the catalog to page 9
HM-10

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – Up to 150 A N = 3 to 7 positions – setting 2.5 % per position REMOVABLE CONTACTS Angular Step Email : [email protected]

 Open the catalog to page 10
HM-11

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – Up to 150 A N = 3 to 7 positions – setting 2.5 % per position REMOVABLE CONTACTS Email : [email protected]

 Open the catalog to page 11
HM-12

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer SERIES-PARALLEL – 20 / 30 kV – Up to 150 A REMOVABLE CONTACTS Email : [email protected] Website : http://www.appareils-precision.fr 20th Januar

 Open the catalog to page 12
HM-13

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer STAR - DELTA – 20 kV – Up to 150 A REMOVABLE CONTACTS Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2

 Open the catalog to page 13
HM-14

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer COMMON OUTPUT PER PHASE – 20 kV – 150 A N = 3 / 5 / 7 positions – setting 2.5 % per position REMOVABLE CONTACTS Common contact per phase Angular Step Email : [email protected] Website : http://www.appareils-precision.fr 20th Janu

 Open the catalog to page 14
HM-15

CHANGER HM THREE-PHASE OFF-CIRCUIT TAP transformer For oil-filled 1 SERIES – PARALLEL or 1 STAR – DELTA – 30 or 63 A 2 BRIDGE – setting 2.5 % per position W : to be specified Email : [email protected] Website : http://www.appareils-precision.fr 20th January

 Open the catalog to page 15
HM-16

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer 1 SERIES – PARALLEL or 1 STAR – DELTA – Up to 150 A 2 BRIDGE – setting 2.5 % per position W : to be specified REMOVABLE CONTACTS Email : [email protected] Website : http://www.appareils-precision.fr 20th January

 Open the catalog to page 16
HM-17

FIXED CONTACTS 150 A REMOVAL USING 56265-HZ-HM SPECIAL TOOL (To be ordered separately) Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2022

 Open the catalog to page 17
HM-18

FIXED CONTACTS 150 A MOUNTING USING 56265-HZ-HM SPECIAL TOOL (To be ordered separately) Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2022

 Open the catalog to page 18
HM-19

THREADED FIXED CONTACTS On request, threaded fixed contacts 26260-M8, available for all HM Tap Changers 150 A. Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2022

 Open the catalog to page 19
HM-20

CONTROL DEVICES Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2022

 Open the catalog to page 20
HM-21

UNIVERSAL ALUMINIUM KNOB CONTROL DEVICE (Does NOT fit 7-position 150A) Ref. 43168-UNI Universal aluminium knob – Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 29 Ref. 43170-UNI Universal aluminium knob and Aluminium protective cover– Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 30 Transformer Tank Email : [email protected] Website : http://www.appareils-precision.fr 20th Janua

 Open the catalog to page 21
HM-22

UNIVERSAL ALUMINIUM HANDLE CONTROL DEVICE (Does NOT fit 7-position 150A) Ref. 43167-UNI Universal aluminium handle – Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 31 Transformer Tank Email : [email protected] Website : http://www.appareils-precision.fr 20th January 20

 Open the catalog to page 22

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