Reyrolle LMT Breaker Retrofit
BU PPMV – PG Service
Marketing and Sales
© ABB Group
April 9, 2015 | Slide 1
The Breaker Retrofit
Table of Contents
© ABB Group
April 9, 2015 | 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
April 9, 2015 | 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
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

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

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© ABB Group
April 9, 2015 | 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
Safety

Modern breakers features:

Number of operations.

Gas Control interlock.


Modern breaker mechanism are lighter
and have longer mechanical life

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© ABB Group
April 9, 2015 | Slide 5
Offer opportunity of eliminating oil and airblast
insulation through use of SF6 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
April 9, 2015 | Slide 6

Retrofit Concept

General Description

Technical Specification

Necessary details for standard retrofit solutions

Manufacture Process

Certification

Contact and Support
General Description
VD4-LMT Retrofitting
VD4-LMT
Vacuum
Circuit Breaker and
original Reyrolle LMT
panel.
Note the VD4-LMT &
the HD4-LMT are
fully interchangeable
VD4-LMT 12kV
© ABB Group
April 9, 2015 | Slide 7
Reyrolle LMT Panels
General Description
HD4-LMT Retrofitting
HD4-LMT SF6 Circuit
Breaker and original
Reyrolle LMT Circuit
Breaker.
Note the VD4-LMT &
the HD4-LMT are
fully interchangeable
HD4-LMT 12kV
© ABB Group
April 9, 2015 | 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
April 9, 2015 | Slide 9
Reyrolle LMT Panel
The Breaker Retrofit
Table of Contents
© ABB Group
April 9, 2015 | Slide 10

Retrofit Concept

General Description

Technical Specification

Necessary details for standard retrofit solutions

Manufacture Process

Certification

Contact and Support
Technical Specification
VD4-LMT Ratings
Rated voltage
[kV]
12
Rated insulation voltage
[kV]
12
Rated power frequency
withstand voltage
[kV]
28
Rated lightning impulse
withstand voltage
[kV]
95
Rated frequency
[Hz]
50-60
Rated short-time
withstand current
[kA 3s]
Up to
31.5
Peak current
[kA]
Up to
80
Rated current
[A]

© ABB Group
April 9, 2015 | Slide 11
Note VD4-LMT 630A, STC Rating is 31.5kA for 1 sec
630,1250 & 2000
Technical Specification
HD4-LMT Ratings
© ABB Group
April 9, 2015 | Slide 12
Rated voltage
[kV]
12
Rated insulation voltage
[kV]
12
Rated power frequency
withstand voltage
[kV]
28
Rated lightning impulse
withstand voltage
[kV]
95
Rated frequency
[Hz]
50-60
Rated short-time
withstand current
[kA 3s]
Up to
31.5
Peak current
[kA]
Up to
80
Rated current
[A]
1250
Technical Specification
LM-AVU Ratings
Rated voltage
[kV]
12
Rated insulation voltage
[kV]
12
Rated power frequency
withstand voltage
[kV]
28
Rated lightning impulse
withstand voltage
[kV]
95
Rated frequency
[Hz]
50-60
Rated short-time
withstand current
[kA 3s]
Up to
Rated current
[A]
Up to 1250
Internal Arc Rating (IEC60298)
© ABB Group
April 9, 2015 | Slide 13
31.5
25kA for 200 ms
Technical Specification
VD4-LMT New Schematic Diagram – Circuit breaker
Schematic Diagram Based on Standard VD4
© ABB Group
April 9, 2015 | Slide 14
Technical Specification
HD4-LMT New Schematic Diagram – Circuit breaker Schematic
Diagram Based on Standard HD4
© ABB Group
April 9, 2015 | Slide 15
The Breaker Retrofit
Table of Contents
© ABB Group
April 9, 2015 | 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
VD4-LMT/HD4-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
April 9, 2015 | 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 Positioned inside the instrument
every breaker type.
compartment of the panel
© ABB Group
April 9, 2015 | Slide 18
Necessary Details for Standard Solution
Existing Schematic
© ABB Group
April 9, 2015 | Slide 19
Necessary Details for Standard Solution
View of MV Panel Shutter Arrangement
© ABB Group
April 9, 2015 | Slide 20
Necessary Details for Standard Solution
View of Secondary Isolating Contacts
The self-connecting
secondary isolating
contacts

© ABB Group
April 9, 2015 | 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
ensure
interchangeability
to

© ABB Group
April 9, 2015 | Slide 22
View of Breaker Main Earth contact

View of Panel door handle
Necessary Details for Standard Solution
Generator Breaker Replacement
RANTAMBE : breaking with HD4-HXA delayed 60 ms
30

In order to use a distribution breaker like
VD4 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
[kA]
20
10
0
-10
-20
-30
0.00
0.02
(file RAN.pl4; x-var t) c:A3
-
0.04
c:B3
-
c:C3
0.06
0.08
0.10
[s]
0.12
-
! Please fill out the generator data request list !
© ABB Group
April 9, 2015 | 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
[kV]
[MVA]
[Hz]
[%]
Generator
Information
[%]
[ms]
[ms]
[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
April 9, 2015 | Slide 24
Sk’’
[MVA]
Sr [MVA]
Uk [%]
Sr [MVA]
Uk [%]
Pr [MW]
Ir/Ia [p.u.]
Net Information
The Breaker Retrofit
Table of Contents
© ABB Group
April 9, 2015 | 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
April 9, 2015 | Slide 26

Manufacturing & assembly of :

VD4-LMT , HD4-LMT , Retrofit

Circuit Breakers
The Breaker Retrofit
Table of Contents
© ABB Group
April 9, 2015 | Slide 27

Retrofit Concept

General Description

Technical Specification

Necessary details for standard retrofit solutions

Manufacture Process

Certification

Contact and Support
Certification
Type Test Availability
© ABB Group
April 9, 2015 | Slide 28

Dielectric, up to 28kV Power frequency & 95kV Impulse

Short circuit, up to 31.5kA for 3 seconds

Temperature rise, up to 2000A

Are available on request for both HD4-LMT & VD4-LMT

Internal Arc Certification for LM-AVU available up to 25kA for
200ms
The Breaker Retrofit
Table of Contents
© ABB Group
April 9, 2015 | 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 VD4-LMT/HD4-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
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© ABB Group
April 9, 2015 | Slide 30

Tel. +27 10 202 6095
Mobile. +27 83 327 6088
Fax +27 11 579 8462
Email: egon.worthmann@za.abb.com
© ABB Group
April 9, 2015 | Slide 31