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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER

Product catalog summary

Overview: This document provides comprehensive technical specifications, procedures, and instructions for cable-operated three-phase off-circuit tap changers used in oil-filled transformers. It covers switching units, control devices, mounting instructions, and accessories.

Specifications: The tap changers are designed for voltage classes of 20/30 kV and current ratings of 30, 63, and up to 175 A. They support configurations such as Bridge, Series-Parallel, Star-Delta, and Common Output per Phase, detailing nominal voltage, rated current, and positions for each.

Procedures: Instructions are provided for removing and mounting 175 A fixed contacts using a special tool (56265-CA), which must be ordered separately. The document stresses using the correct control device for configurations with 6 or 7 positions.

Control Devices: Options for control devices include universal aluminum knobs and handles, which are padlockable and require specific cover drilling dimensions. An optional aluminum protective cover is also described.

Mounting Instructions: Detailed mounting instructions emphasize correct installation for proper operation, including diagrams and measurements for drilling and fitting components into the transformer tank.

Important Notes: Each tap changer comes with two 2-meter steel cables. Additional components like steel sheaths and Rilsan inner linings must be ordered separately. Cautionary notes are included regarding control devices for higher current ratings.

Introduction: The document details mounting instructions for control devices 20184-UNI, 20192-UNI, 20189-UNI, and 20189-UNI-FOLD, delivered in four components: electrical parts, control device, metallic sheath, and Rilsan sheath.

Mounting Instructions:

Electrical Part: Bolt onto the active part of the transformer, ensuring the setting/checking window is visible.
Control Device: Bolt through the transformer tank, using a temporary frame if necessary. Secure the control head with a blocking nut at 10 daN.m torque.
Sheaths Preparation: Delivered in rolls, the route should be short with large radius bends. Cut and grind ends to remove burrs.
Wiring of Driving Cables: Ensure correct positioning of the moving bar index and operating knob. Coil cables correctly around the drum for proper contact positioning.

Checking and Adjustments: After assembly, check driving cable tension by turning the operation knob to position 1 and returning to the setting position to verify the moving bar index location through the checking window.

Positioning and Alignment: Set the highest position correctly, return to the setting position, and verify the index location. Adjust setting/tightening screws to correct misalignment.

Verification: Use a multimeter to check the tap changer's setting and functioning in all positions and directions. Secure setting screws with block nuts and trim excess from driving cables.

Applicable Devices: Instructions apply to switching units with control devices 20184-UNI, 20192-UNI, 20189-UNI, and 20189-UNI-FOLD.

Catalog excerpts

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-1

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer Up to 175 A SWITCHING UNITS: Cable operated Tap Changer CORE sub-assembly with TUBULAR Fixed Contacts for cable crimping or brazing. Nominal Voltage Rated current BRIDGE Series-Parallel (S-P) Star-Delta Common Output per Phase BRIDGE - double BRIDGE Star-Delta 175 A Fixed Contacts are REMOVABLE – Removal/mounting instructions: CONTROL DEVICES – Options & accessories: MOUNTING INSTRUCTIONS of Switching Units and Control Devices: Website : http://www.appareils-precision.fr 20th January 202

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-2

SWITCHING UNITS Website : http://www.appareils-precision.fr 20th January 2022

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-3

CABLE OPERATED THREEPHASE 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 C Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV (*) : Fixing by insulating rods and nuts Caution : For 6 positions / 7 positions, the control device for 175A must be used. 3 Email : [email protected] Website : http://www.appareils-precision.fr 20th Janua

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-4

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer SERIES-PARALLEL diagram – 10-20 kV – 30 and 63 A Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV (*) : Fixing by insulating rods and nuts 4 Email : [email protected] Website : http://www.appareils-precision.fr 20th January 20

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-5

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer STAR-DELTA– 20 / 30 kV – 30 and 63 A Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV 20 AC : 50 BIL : 125 30 AC : 70 BIL : 170 Website : http://www.appareils-precision.fr 20th January 202

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-6

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer COMMON OUTPUT PER PHASE – 20 and 30 kV – 30 or 63 A N = 3 to 7 positions – setting 2.5 % per position C O Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV 20 AC : 50 BIL : 125 30 AC : 70 BIL : 170 Caution : For 6 positions / 7 positions, the control device for 175A must be used. 6 Email : [email protected] Website : http://www.appareils-precision.fr 20th January

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-7

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer Double tap changer - BRIDGE – 20 / 30 kV – 30 and 63 A N = 3 to 7 positions – setting 2.5 % per position 17,5 Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV 20 AC : 50 BIL : 125 30 AC : 70 BIL : 170 (*) : Fixing by insulating rods and nuts Caution : For 6 positions / 7 positions, the control device for 175A must be used. 7 Email : [email protected] Website : http://www.appareils-precision.fr...

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-8

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer BRIDGE – 20 / 30 kV – Up to 175 A N = 3 and 5 positions – setting 2.5 % per position C REMOVABLE CONTACTS Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV 20 AC : 50 BIL : 125 30 AC : 70 BIL : 170 Website : http://www.appareils-precision.fr 20th January 2

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-9

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer STAR - DELTA – 20 kV – Up to 175 A 17,5 Important note: Two steel cables, 2 meters long each, are provided with the Tap changer. Steel sheath and Rilsan inner lining to be ordered separately. Voltage class kV 20 AC : 50 BIL : 125 Website : http://www.appareils-precision.fr 20th January 202

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-10

FIXED CONTACTS 175 A REMOVAL USING 56265-CA SPECIAL TOOL (To be ordered separately) Email : [email protected] Website : http://www.appareils-precision.fr 20th January 2022

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-11

FIXED CONTACTS 175 A MOUNTING USING 56265-CA SPECIAL TOOL (To be ordered separately) Website : http://www.appareils-precision.fr 20th January 2022

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-12

CONTROL DEVICES Website : http://www.appareils-precision.fr 20th January 2022

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-13

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER MOUNTING OF THE TAP CHANGERS CONFIGURATION AND OPTIONS Normal R mini : 140 mm IF CONTROL DEVICE IS ORDERED SEPARATELY : IF ADAPTOR FOR CONTROL DEVICE IS ORDERED SEPARATELY : These 2 parts are always supplied with the control device Website : http://www.appareils-precision.fr 20th January 2022

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-14

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER CONTROL DEVICES FOR 30 AND 63 A TAP CHANGERS (1 / 4) Ref. 20168-UNI Universal aluminium knob – Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 25 40 Transformer tank Ref. 20170-UNI Universal aluminium knob and Aluminium protective cover– Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 26 O 98 Transformer tank Website : http://www.appareils-precision.fr 20th Janua

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-15

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER CONTROL DEVICES FOR 30 AND 63 A TAP CHANGERS (2 / 4) Ref. 20222-UNI Universal aluminium handle – Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 27 20 Transformer tank Website : http://www.appareils-precision.fr 20th January 20

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CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER-16

CABLE OPERATED THREEPHASE OFF-CIRCUIT TAP CHANGER CONTROL DEVICES FOR 30 AND 63 A TAP CHANGERS (3 / 4) Ref. 20222-UNI-FOLD Universal aluminium handle – Folding - Padlockable – Cover drilling Ø 27 mm H12 Options and mounting instructions page 28 100 Transformer tank Website : http://www.appareils-precision.fr 20th January 20

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