THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer Up to 63A Website : http://www.appareils-precision.fr 20 avril 2021

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer Up to 63A Built from the following components to be included in your order: SWITCHING UNIT HR Tap Changer CORE sub-assembly with TUBULAR Fixed Contacts for cable crimping or brazing. Nominal Voltage BRIDGE Series-Parallel (S-P) Star-Delta Common Output per Phase Multi-stage CONTROL DEVICE, options & Mounting instructions – Pages 10 to 15 Website : http://www.appareils-precision.fr 20 avril 2021

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 Website : http://www.appareils-precision.fr 20 avril 2

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer SERIES-PARALLEL – 20 kV – 30 and 63 A Website : http://www.appareils-precision.fr 20 avril 202

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer STAR - DELTA – 20 kV – 30 and 63 A Website : http://www.appareils-precision.fr 20 avril 202

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 L = 150, L = 170, L = 200 are also available 6 Email : [email protected] Website : http://www.appareils-precision.fr 20 avril 2

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 L = 150, L = 170, L = 200 are also available 7 Email : [email protected] Website : http://www.appareils-precision.fr 20 avril 2

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer MULTI-STAGE TAP CHANGERS Website : http://www.appareils-precision.fr 20 avril 2021

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer 1 stage – series-parallel coupling – 15-20 kV – 30 to 63 A 2 stages – bridge coupling – 20 kV – 30 to 63 A 3-5-7 positions – setting 2.5 % per position

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer ADDITIONAL INSULATING SUPPORTS Insulating support for single tap changers Bridge diagram Star diagram Star-delta coupling Common output per phase Series-parallel coupling The total length of the tap changer must be modified in terms of the above mentioned values I. Insulating support for multi-stage tap changers The values of dimension I remain the same as those of the relevant single tap changers. Website : http://www.appareils-precision.fr 20 avril 2021

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer POLYAMIDE CONTROL DEVICE 70768 Washer 70706 Spring 70707 Polyamide knob 70703 Thickness washer 02- 70009 Seal ring O ring R16 Assembly of tap changer : Insert the bracket in the dia. 20 mm hole of the Transformer tank Fit the following order : - the R16 O ring - the seal ring - the thickness washers (tank + washers = 10 mm) - the positioning ring 70008 - the nut 70005 After blocking the nut (minimum torque 60 meter-Newton), install : - the polyamide knob 70703 in correct position. - the spring 70707 and washer 70706, by pushing and...

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer ALUMINIUM CONTROL DEVICE 70770 Aluminium cap 70702 O ring 70705 Washer 70706 Spring 70707 Aluminium knob 70704 Nut 70005 Positionning ring 70008 Thickness washer 02-70009 Seal ring O ring R16 Assembly of tap changer : Insert the bracket in the dia. 20 mm hole of the Transformer tank Fit the following order : - the R16 O-ring - the seal ring - the thickness washers (tank + washers = 10 mm) - the positioning ring 70008 - the nut 70005 After blocking the nut (minimum torque 60 meter-Newton), install : - the aluminium knob 70704 in correct...

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer POLYAMID KNOB AND ALUMINIUM COVER - CONTROL DEVICE 70774 Polyamid cap 70701 Washer 70706 Spring 70707 Polyamid knob 70703 Nut 70005 Positionning ring 70008 Seal ring Insert the bracket in the dia. 20 mm hole of the Transformer tank. Fit the following order : - the R16 O-ring - the seal ring - the base plate ; Place the padlocking holes in your wished orientation. - the thickness washers (tank + washers = 9 mm) - the positioning ring 70008 - the nut 70005 After blocking the nut (minimum torque 60 meter-Newton), install : - the polyamide...

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer ALUMINIUM KNOB AND COVER - CONTROL DEVICE 70775 Aluminium cap 70702 Washer 70706 Spring 70707 O ring 70705 Aluminium knob 70704 Nut 70005 Positionning ring 70008 Seal 56161 Protective cover 56160 Seal ring Insert the bracket in the dia. 20 mm hole of the Transformer tank. Fit the following order : - the R16 O-ring - the seal ring - the base plate ; Place the padlocking holes in your wished orientation. - the thickness washers (tank + washers = 9 mm) - the positioning ring 70008 - the nut 70005 After blocking the nut (minimum torque...

THREE-PHASE OFF-CIRCUIT TAP CHANGER For oil-filled transformer CONTROL DEVICE - NUMBERING OF THE KNOBS Website : http://www.appareils-precision.fr 20 avril 2021