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RMSYS

RMSYS
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RMSYS

Product catalog summary
Generalities
The RMSYS Ring Main Unit (RMU) is a compact, integrated system housed in a sealed stainless steel shell, ensuring safety with a relief valve and pressure monitoring as per IEC 62271-1 standards.
Employment
RMSYS switchboards are designed for medium voltage (MV) secondary power distribution networks, suitable for both public and private sectors, with voltages up to 24kV, ideal for ring networks.
Description
The RMU comprises on-load switches, vacuum circuit breakers, fuses, bushings, and protection relays. It features a three-position switch (close, open, earthed) with a locking system to prevent incorrect operations, and can be motorized.
Cable Termination
The unit supports separable connectors interface C, with specific recommendations for conductor sizes and earthing shield, tested in RMSYS cubicles.
Norms and Homologations
RMSYS switchboards have passed type tests at CESI and comply with IEC standards, with homologations in various countries. The production process adheres to ISO 9001 and ISO 14000 quality systems.
Electrical Features
The rated voltage ranges from 12 to 24 kV, with specific withstand voltages for power-frequency and lightning impulse. The rated current for main bus bars and functional units is up to 630 A.
Typical Configuration
A selection table is provided for transformer ratings and operating voltages, compatible with DIN type fuses.
Installation Details
Installation involves checking cable insulation and using bushings type "C" as per CEI EN 50181 standards. Current transformers provide necessary signals and energy for relay operation.
Dimensional Features
Details on dimensions and components such as conductive EPDM jackets and insulating layers ensure compatibility with specified standards.
Specifications
- Short-time withstand current: 20 kA for 3 seconds
- Peak value: 50 kA
- Internal arc withstand: 20 kA for 1 second
- Protection degree for stainless steel tank: IP 67
- Altitude: ≤1000 meters
- Ambient temperature: -5 to 40°C
- Compliance with GOST rules for the Russian market.
Typical Configurations
1. Distribution point with switch-disconnector: Configurations include various arrangements with auxiliary contacts and key locks.
2. Transformer protection with switch-fuse combination: Includes auxiliary contacts, key locks, and shunt opening release.
3. Transformer protection with vacuum circuit breaker: Features auxiliary contacts, motor operating mechanism, and signalling lamps.
4. Line protection with vacuum circuit breaker: Similar features as transformer protection with VCB.
Installation Details
Recommendations for placement and civil works with indicative values.
Dimensions and Weight
Specific dimensions and weights are provided for different configurations, including those with vacuum circuit breakers and fuse types.
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Catalog excerpts

RMSYS-3

Cable termination Attacco cavo Connexion cable Electrical features Caratteristiche elettriche Caractéristiques électriques Typical configuration Configurazioni tipiche Configurations tipiques Installation details Details d’installation Dimensional features Caratteristiche dimensionali Caractéristiques dimensionnelles

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RMSYS-4

Generalities Generalità Généralités RMSYS switchboard (Ring Main Unit - RMU) is composed by a monoblock partitioned into integrated operating units. The stainless steel shell is absolutely sealed, and contains the switchgears and all the live parts. The possible combinations of 3 position rotary switches (close, open, earthed) with vacuum circuit breakers or fuses assure to protect the outgoing circuits and/or transformers. Every operating unit contains a plug-in cable connection compartment. A relief valve ensures the safety in the event of overpressure inside the container, in accordance with...

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RMSYS-5

Employment Impiego Emploi RMSYS switchboards are used in MV secondary power distribution, public or private, with voltage up to 24kV. I quadri RMSYS vengono utilizzati nelle reti di distribuzione secondaria di MT, pubbliche o private, con tensioni fino a 24kV. Particularly they can be employed to power lines and transformers of ring networks. Nello specifico per la protezione e l’alimentazione di linee e trasformatori installati su una rete ad anello. Les tableaux RMSYS sont utilisés dans les réseaux électrique de distribution secondaire de MT, publiques ou privées, avec des tensions jusqu’à...

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RMSYS-6

Description Descrizione Description 1 On-load switch Interruttore di manovra-sezionatore Interrupteur 4 Cable test Prova cavi Test câbles Manometer Manometro Manomètre Fuses Fusibili Fusibles 5 Bushing Isolatori passanti Isolateurs passants

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RMSYS-7

8 Protection relay Relè di protezione Relais de protection 4 Cable test Prova cavi Test câbles 2 Vacuum circuit breaker Interruttore sottovuoto Disjoncteur sous vide 7 Manometer Manometro Manomètre 5 Bushing Isolatori passanti Isolateurs passants 6 Current transformers Trasformatori di corrente Transformateurs de courant

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RMSYS-8

On-load switch Interruttore di manovra-sezionatore Interrupteur The switch has three different positions: close, open and earthed, with an effective locking system that prevents incorrect operations. L’apparecchio può assumere tre posizioni, chiuso, aperto e messo a terra, presentando un efficace sistema di interblocco che previene manovre errate. L’appareil peut avoir trois positions: fermé, ouvert et mise à la terre, et il est doté d’un efficace naturel système de verrouillage qui prévient les manoeuvres incorrectes. The operating mechanism can be motorized. Il comando può essere motorizzato....

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RMSYS-9

Cable test Prova cavi Test câbles In order to check the insulation of the cable or to search failures you can enter a voltage across the dedicated loops by closing the earth switch and opening the mobile connection of grounding. Per controllare l’isolamento dei cavi o ricercare eventuali guasti è possibile immettere una tensione attraverso gli appositi passanti chiudendo il sezionatore di terra e aprendo la connessione mobile di messa a terra. Pour vérifier l’isolament des câble ou chercher des fautes vous pouvez entrer une tension à travers les boucles en fermant les interrupteur de mise à la...

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RMSYS-10

Protection relay Relè di protezione Relais de protection Threshold Soglia Seuil Features Caratteristiche Caractéristiques Normal Inverse1 (IEC "A") Normal Inverse2 Very Inverse (IEC “B”) Extremely Inverse (IEC “C”) Long Time Inverse Define Time Define Time Normal Inverse1 (IEC "A") Normal Inverse2 Very Inverse (IEC “B”) Extremely Inverse (IEC “C”) Long Time Inverse Define Time Define Time Current regulation Regolazione corrente Règulation courant Timing Temporizzazione Timing Instantaneous Istantaneo Instantané < 60ms Minimum 20% In on a phase or 10% In on two phases Minimo 20% In su una fase...

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RMSYS-11

Cable termination Attacco cavo Connexion câble 183 mm Conductive EPDM jacket Guaina conduttiva EPDM Enveloppe conductive EPDM Conductive rubber cap Cappuccio in gomma conduttiva Bouchon en gomme conductive Interface type “C” 630A as described by CENELEC EN 50180 and 50181 Interfaccia tipo “C” 630A come descritto dal CENELEC EN 50180 e 50181 Type d'interface “C” 630A comme décrit par le CENELEC EN 50180 et 50181 Clamping screw Vite di serraggio Vis de serrage Basic insulating plug Spina isolante base Fiche isolante de base Conductive EPDM insert Inserto conduttore EPDM Élément conducteur EPDM...

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RMSYS-12

Norms and homologations Norme e certificati Normes et certificats RMSYS switchboards have positively I quadri RMSYS hanno positivamente Les tableaux RMSYS ont positivement passed all type tests at official superato, presso laboratori ufficiali passé dans laboratoires officiels (CESI) laboratories (CESI), according to the (CESI), tutte le prove di tipo, in accordo non seulement tous les essais de type International Standards IEC, as well alle Norme Internazionali IEC, oltre en accord aux Normes Internationales as they have obtained the peculiar che aver ottenuto omologazioni IEC, mais aussi ils...

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RMSYS-13

Technical features Caratteristiche tecniche Caractéristiques techniques Etant donné l’évolution des matériels building materials and the updating materiali e norme, quanto riportato ainsi que des normes, les informations of standards, reported data are not nel presente documento si potrà contenues dans le présent document, ritenere impegnativo solo dopo ne seront considérées comme étant nostra conferma. valable qu’après confirmation de notre part.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.