Reyrolle LMT Breaker Retrofit BU PPMV PG Service

Reyrolle LMT Breaker Retrofit BU PPMV – PG Service Marketing and Sales © ABB Group 26 November 2020 | Slide 1

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 2 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 3 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

Retrofit Concept Retrofit Aim RETROFIT means the implementation of modern components (primary switching devices and digital protection/control technology) in the existing MV installation with following benefits § § § § © ABB Group 26 November 2020 | Slide 4 Cheaper than a complete replacement Short implementation time for replacement Minimum shutdown of the switchboard Remaining service life extension Improved operator protection Minimisation of further maintenance costs Warranty on the conversion work Spare parts availability for long time

Retrofit Concept The Benefits Technology § Bus communication between breaker and control panel § Motorized rack-in rack-out operations Quality of Supply § Through advanced switching features. ) § Faster reclosing times § Large communication option to downstream and upstream Reliability Investment § Lower maintenance requirements. § § Spare parts availability and delivery time for obsolete products can result in unexpected down time. (DOWN TIME) Where limited funds are available of capital investment § Lets update equipment with lower investments § Lets plan customer maintenance budget § Reduction of insurance costs § By using new technology § Reduction of fire risk from old oil breakers § Relay on operation performance and lose of production/time § Modern breakers features: § Number of operations. § Gas Control interlock. § Modern breaker mechanism are lighter and have longer mechanical life Safety § § § © ABB Group 26 November 2020 | Slide 5 Offer opportunity of eliminating oil and airblast insulation through use of SF 6 or vacuum interrupting technology Dramatically reduce fire risk. (people & plants) Reduced insurance costs. (people & plants) Increasing making current capacity protects personnel and equipment from unexpected failures. Modern control circuits supports remote operations. Additional safety standards embedded in modern breaker increases installation safety (i. e. internal/external interlocks)

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 6 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

General Description VD 4 -LMT Retrofitting VD 4 -LMT Vacuum Circuit Breaker and original Reyrolle LMT panel. Note the VD 4 -LMT & the HD 4 -LMT are fully interchangeable VD 4 -LMT 12 k. V © ABB Group 26 November 2020 | Slide 7 Reyrolle LMT Panels

General Description HD 4 -LMT Retrofitting HD 4 -LMT SF 6 Circuit Breaker and original Reyrolle LMT Circuit Breaker. Note the VD 4 -LMT & the HD 4 -LMT are fully interchangeable HD 4 -LMT 12 k. V © ABB Group 26 November 2020 | Slide 8 Reyrolle LMT Breaker

General Description LM-AVU Retrofitting LM-AVU Reyrolle LMT Panel Internal arc upgrade kit Reyrolle LMT Panel fitted with LM-AVU kit © ABB Group 26 November 2020 | Slide 9 Reyrolle LMT Panel

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 10 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

Technical Specification VD 4 -LMT Ratings Rated voltage [k. V] 12 Rated insulation voltage [k. V] 12 Rated power frequency withstand voltage [k. V] 28 Rated lightning impulse withstand voltage [k. V] 95 Rated frequency [Hz] 50 -60 Rated short-time withstand current [k. A 3 s] Up to 31. 5 Peak current [k. A] Up to 80 Rated current [A] § © ABB Group 26 November 2020 | Slide 11 Note VD 4 -LMT 630 A, STC Rating is 31. 5 k. A for 1 sec 630, 1250 & 2000

Technical Specification HD 4 -LMT Ratings © ABB Group 26 November 2020 | Slide 12 Rated voltage [k. V] 12 Rated insulation voltage [k. V] 12 Rated power frequency withstand voltage [k. V] 28 Rated lightning impulse withstand voltage [k. V] 95 Rated frequency [Hz] 50 -60 Rated short-time withstand current [k. A 3 s] Up to 31. 5 Peak current [k. A] Up to 80 Rated current [A] 1250

Technical Specification LM-AVU Ratings Rated voltage [k. V] 12 Rated insulation voltage [k. V] 12 Rated power frequency withstand voltage [k. V] 28 Rated lightning impulse withstand voltage [k. V] 95 Rated frequency [Hz] 50 -60 Rated short-time withstand current [k. A 3 s] Up to Rated current [A] Up to 1250 Internal Arc Rating (IEC 60298) © ABB Group 26 November 2020 | Slide 13 31. 5 25 k. A for 200 ms

Technical Specification VD 4 -LMT New Schematic Diagram – Circuit breaker Schematic Diagram Based on Standard VD 4 © ABB Group 26 November 2020 | Slide 14

Technical Specification HD 4 -LMT New Schematic Diagram – Circuit breaker Schematic Diagram Based on Standard HD 4 © ABB Group 26 November 2020 | Slide 15

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 16 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

Necessary Details for Standard Solution VD 4 -LMT/HD 4 -LMT Retrofit Solution Development In case of Generator CB, to be filled the relevant data sheet. § Essential technical data § Name plate on the existing breaker with § Serial number § Type § Rated Current § Auxiliary voltage for coils and spring charging motor § § © ABB Group 26 November 2020 | Slide 17 Existing Schematic diagram Data for Clarification of electrical/mechanical interchangeability § Internal view of the MV Panel Shutter arrangement § Internal view of Secondary contact arrangement § View of front door handle § View of circuit breaker main earth clip

Necessary Details for Standard Solution Picture of Name Plate Positioned on the CB front for every breaker type. © ABB Group 26 November 2020 | Slide 18 Positioned inside the instrument compartment of the panel

Necessary Details for Standard Solution Existing Schematic © ABB Group 26 November 2020 | Slide 19

Necessary Details for Standard Solution View of MV Panel Shutter Arrangement © ABB Group 26 November 2020 | Slide 20

Necessary Details for Standard Solution View of Secondary Isolating Contacts The self-connecting secondary isolating contacts § © ABB Group 26 November 2020 | Slide 21 View of Secondary contacts on Reyrolle LMT Circuit Breaker § View of Secondary contacts in Reyrolle LMT Switchgear

Necessary Details for Standard Solution View of Breaker Main Earth & Panel door handle Useful views to ensure interchangeability § © ABB Group 26 November 2020 | Slide 22 View of Breaker Main Earth contact § View of Panel door handle

Necessary Details for Standard Solution Generator Breaker Replacement § In order to use a distribution breaker like VD 4 correctly, we have to calculate the DC current in case of generator short circuit § Why? The distribution breaker can only open when DC current is going to a reasonable low level where the energy can not destroy the breaker § The opening time might be increased and sometimes capacitors could be requested at generator site ! Please fill out the generator data request list ! © ABB Group 26 November 2020 | Slide 23

Necessary Details for Standard Solution Generator Breaker Data sheet 2. Technical data of generator Rated voltage Rated apparent power Rated frequency Subtransient direct axis reactance (saturated) Ur Sr fr Xd‘‘ Transient direct axis reactance (saturated) Xd‘ [%] Synchronous direct axis reactance (saturated) Subtransient short-circuit time constant Transient short-circuit time constant Armature short-circuit time constant Xd Td‘‘ Td‘ Ta [k. V] [MVA] [Hz] [%] Generator Information [%] [ms] 3. Data of network Short circuit power of high voltage network Rated power of main transformer Impedance voltage of main transformer Rated power of auxiliary transformer *) Impedance voltage of auxiliary transformer *) Rated power of connected medium voltage motor(s) *) Rated motor current related to motor starting current *) Single line diagram of network © ABB Group 26 November 2020 | Slide 24 Sk’’ [MVA] Sr [MVA] Uk [%] Pr [MW] Ir/Ia [p. u. ] Net Information

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 25 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

Manufacture Process Base Breaker Assembling Line © ABB Group 26 November 2020 | Slide 26 § Manufacturing & assembly of : § VD 4 -LMT , HD 4 -LMT , Retrofit § Circuit Breakers

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 27 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

Certification Type Test Availability § Dielectric, up to 28 k. V Power frequency & 95 k. V Impulse § Short circuit, up to 31. 5 k. A for 3 seconds © ABB Group 26 November 2020 | Slide 28 § Temperature rise, up to 2000 A § Are available on request for both HD 4 -LMT & VD 4 -LMT § Internal Arc Certification for LM-AVU available up to 25 k. A for 200 ms

The Breaker Retrofit Table of Contents © ABB Group 26 November 2020 | Slide 29 § Retrofit Concept § General Description § Technical Specification § Necessary details for standard retrofit solutions § Manufacture Process § Certification § Contact and Support

Service Support and Contacts Medium Voltage Service Contacts for VD 4 -LMT/HD 4 -LMT Please contact us if you need more information Reyrolle Retrofit § § Export Retrofit Development Manager Fanie Delport Tel. +27 10 202 6143 § Mobile + 27 83 287 8362 § Fax +27 11 579 8510 § Email: fanie. delport@za. abb. com Product Group Manager – MV and HV Service Egon Worthmann § § § © ABB Group 26 November 2020 | Slide 30 § Tel. +27 10 202 6095 Mobile. +27 83 327 6088 Fax +27 11 579 8462 Email: egon. worthmann@za. abb. com