P&B’s range of replacement Reyrolle air breakers and contactors have been designed for total reliability. Utilising a new vacuum contactor and the ABB VC4 vacuum circuit breaker, our Reyrolle retrofits are relied upon for achieving trouble-free performance over many thousands of maintenance free operations. Type S14(A) Vacuum Contactor Retrofit Utilising many parts from the original truck, including the original frame, contact arms, racking and interlock mechanism, the Type S14(A) replacement contactor fits perfectly into your existing cubicle with no alterations. All current carrying parts are fully refurbished and re-plated. The unit is completely re-wired to your specific requirements. Many options are available for this unit, often above your original specification. Retrofit Circuit Breaker Type S14(A) Ratings Maximum System Voltage kV 3.3 Rated Power Frequency Withstand kV 10 Basic Impulse Level kVp 40 Normal Rated Current A 400 Contactor SC Breaking Current kA rms 10 Short Circuit Breaking Current kA up to 26.3 rms (incl.
Fuse link) Short-Time Current kA 3secs 26.3 Mechanical Endurance Performance 10,000 Operations Type S27(A) Vacuum Circuit Breaker Retrofit Utilising many parts from the original truck, including the original frame, contact arms, racking and interlock mechanism, the Type S27(A) replacement circuit breaker fits perfectly into your existing cubicle with no alterations to the existing unit. All current carrying parts are fully refurbished and re-plated. The unit is completely re-wired to your specific requirements. Many options including fused versions are available for this unit, often above your original specification.
Retrofit Circuit Breaker Type S27(A) Ratings Maximum System Voltage kV 3.3 Rated Power Frequency Withstand kV 10 Basic Impulse Level kVp 40 Normal Rated Current A up to 1250A Short Circuit Breaking Current kA rms 31.5 Short-Time Current kA 3secs. 31.5 Peak Making Current kAp 80 Mechanical Endurance Performance 10,000 Type S36 & S45 Vacuum Circuit Breaker Retrofit Utilising many parts from the original truck, including the original frame, contact arms, racking and interlock mechanism, the Type S36 and S45 replacement circuit breakers fit perfectly into your existing cubicle with no alterations to the existing unit.
Siemens Switchgear Manual
All current carrying parts are fully refurbished and re-plated. The unit is completely re-wired to your specific requirements.
Coal Mine Unions. Inspectors Safety Circular Dear Sir Mine Managers should note the enclosed information relating to the use of Reyrolle LM, 11 kV switchgear. The problem outlined can lead to the circuit breaker failing to correctly remove power when a fault occurs and this can be a danger to anyone in the vicinity of the switchgear. If you have this type of switchgear in use at a mine then the manufacturers, or persons competent to carry out the necessary modifications, should be contacted without undue delay. Yours faithfully S P Wing HM Principal District Inspector of Mines LM23T, LM36T and LMI Switchgear Information, recommendations and instructions Summary This document relates to EA SOP 206 raised on type LM23T, LM36T and LMI Switchgear circuit breakers and the long term maintenance of dashpot washers.
This information does not apply to type lmt2 switchgear Background Dashpot Buffer Washer SOP 206 was raised following an internal fault on a LM23T circuit breaker manufactured in 1974. Investigation has revealed this was probably due to the opening spring dashpot piston seizing within the cylinder resulting in incomplete travel of the main contacts. The dashpot contains a PVC buffer washer which is immersed in oil and over a long period of time, the pasticizer in the PVC can migrate into the oil, in some cases causing shrinkage and hardening of the washer. Subsequently the washer could become loose and displaced and due to the impact of the piston it could disintegrate.
LM23T/LM36T/LMI Circuit breakers were manufactured between 1960 and 1976 and can be easily identified from the data label by the article number. 861A - and/or a constructional number X2 to X22. LMT2 Circuit breakers NOT AFFECTED were manufactured between 1973 and 1997 and can be identified from the data label by an article number 971A - and/or a constructional number X30, X31, X32 or X33. Mtd canada manuals single stage. Recommendations / Inspection / Actions Although the incident rate is low (second recorded incident) the consequences could be severe therefore all buffer washers over 12 years old should be replaced.
This affects LM23T, LM36T and LMI Switchgear, all use the same type buffer washer. A replacement buffer washer is now available of superior material which will have a life of at least 20 years.
For further information please contact: Reyrolle Switchgear Tel.
Reyrolle & Company was a British engineering firm founded by Alphonse Constant Reyrolle, a Frenchman, in 1886 to produce scientific instruments. At its peak it employed 12,000 people and manufacturered switchgear for power stations worldwide. Reyrolle was a leader in electrical manufacturing in the United Kingdom throughout the 1900’s through to about 1980. During this period there were many Reyrolle plants established outside the UK including switchgear factories in South Africa and Melbourne, Australia. The South Africa based division of Reyrolle, a division of NEI Africa Ltd., was acquired by ABB in 2002. It included the medium-voltage part of Reyrolle South Africa.
Reyrolle's medium-voltage switchgear got an impressive reputation for quality and reliability, with a long service life. Nowadays ABB is offering extensive retrofit solutions for Reyrolle LMT, LMS, LMR and LMRP switchgear. There is a specific benefit of circuit-breaker retrofit, where the original breakers are of an oil-insulated type and there is a need to reduce fire risk in the sub-station for safety or insurance purposes. The breaker can easily be replaced with the latest vacuum or SF 6 circuit breakers, enabling the switchboard to reach its full lifespan. Reyrolle LM panels retrofitted with the Internal Arc modifications increase operator safety at a fraction of the cost of new switchgear with minimal downtime and all modifications done on site.
Replacing Switchgear Parts Will Not Save Your Personnel From Electrical Flash Fatalities, Nor Will It Improve The Durability And Performance! Retrofit is a reliable solution that guarantees full protection from electrical flash fatalities and many other accidents, without the outrageous costs of having to replace the entire switchgear panel. At the same time it will provide the trouble-free durability that you would expect from a brand new panel. Discover how it works and how it fits to your switchgear panel by downloading our comprehensive report (we will send it to the email address you provide below). The report includes 3D models of retrofitted switchgear, including your model of switchgear.
Are You Tired Of Switchgear Malfunctions Or The Risk of Arc Flash Fatality? This site has been created by a group of Retrofit Service Providers from around the Globe. We are specialists in switchgear retrofitting and have a portfolio of almost one hundred ready-to-supply retrofit solutions for legacy switchgear panels of medium voltage classes. These retrofit solutions have been designed using non-genuine parts. We have initially refrained from applying parts from OEM or their successors due to many of them no longer existing.
Abb Switchgear Manual 12th Edition
Neither original nor updated parts of OEM can provide outstanding performance and value for money. The offered retrofit solutions have been designed to perform 30 000 CO at rated currents, have the possibility for fast trip and reclose functionality and are ready for internal arc-flash relay operations which are the only active personal arc-protection available for these legacy installations. Based on our profound knowledge of legacy products, these retrofit solutions have been intensively lab and field tested from Saudi to Norway. Please see the Retrofit Application Portfolio. CESI or KEMA product certification assures long lasting and trouble free world acceptance and performance.
We value the time of our customers and take immediate actions to support. Our service associates are located in close proximity to our customers enabling prompt customer visits or response in the local language. If you would like to become one of our local partners please feel free to contact us. AE +51. AM +0. AZ +31.
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Switchgear Manual
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Why Retrofit?. Fault level upgrades - where the fixed portion needs to be compatible with a proposed enhanced rating. Remote control of switchgear – many originally manufactured ocb’s have manually operated mechanisms that cannot be converted to electrical release or motor charged mechanisms.
Troublesome individual breakers on a multipanel switchboard where there are no technical or economical reasons to change the switchboard. Desire to upgrade the moving portion but cannot practically consider installing new switchgear (i.e. Process industry). Less maintenance and asset management costs (no oil, frequency of maintenance reduced, post fault maintenance reduced).
Loss of expertise on particular ranges of circuit breaker. Lack of availability of spares for oil circuit breakers. Change of duty – increased frequency of switching. Increase in circuit rating from 400-630A (or upgrade from 400-1250A if other internal components changed). We have experience with over 5,000 retrofit installations and can offer the complete package from initial consultation, to choice of circuit breakers, to final removal and disposal of the original breakers via fully licensed means. In particular we have extensive knowledge of ranges and type C/D ranges of retrofits with unparalleled knowledge of the original fixed portions of switchgear.