m-LVD Low Voltage Disconnect - Dimensioned Drawing

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Blue Sea Systems

7635-BSS

Atvienotājs zemā sprieguma m-LVD

Le déconnecteur basse tension BLUE SEA m-LVD est une solution automatique pour protéger vos batteries 12V DC de la décharge profonde, en coupant les charges non essentielles. Il offre une tension de déconnexion ajustable de 11.3V à 12.1V et une certification IP67. Ce produit inclut le commutateur de contrôle à distance PN 7928 et un couvercle isolant arrière.

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127,73€

127,73€ ~~138,72€~~

TTC Piegāde aprēķināta maksājuma brīdī.

Noliktavā

Free pickup point from €150 in France
Collection at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of certified installers

Find an installer

Service d'assistance

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Technical specifications

Nominālais spriegums	12
Savienojuma spailes izmērs	M6 (1/4"-20)
IP indekss	IP67
AFD aizsardzība	Non
Alarm Time Before Disconnect	5
Pastāvīgā strāva (A)	65.0
Vadības tips	Commutateur à distance
Izmēri (G x A x D)	70 x 70 x 50
Disconnect Voltage Range	11.3V - 12.1V
Factory Default Disconnect Voltage	12.1
Pārtrauktais strāvas stiprums (A)	115 (5 min)
Slēdzis ar atslēgu	Non
Montāžas tips	Surface, panneau avant ou panneau arrière
Pālu skaits	1
Operating Current Connected Ma	95
Operating Current Open Ma	4
Strāvas sprieguma darbības diapazons	11.3V - 13.5V DC (nominal 12V DC)
Paneļa izgriezuma diametrs (mm)	58.7
Pozīcijas	Réglage de la tension de déconnexion, Override, Arrêt
Produkta pielietojums	Déconnecte automatiquement les charges non essentielles pour préserver la batterie et assurer le démarrage du moteur.
Reconnect Voltage	13
Remote Control Switch Included	Oui
Pārslēga tips	Déconnecteur de basse tension automatique
Savienojuma spailes tips	Goujon fileté
Time Delay To Alarm	5
Total Disconnect Delay	10
Kabeļu savienojuma tips	À goujons

Detailed description

Izstrādāts 12V līdzstrāvas sistēmu barošanas pārvaldībai, m-LVD Low Voltage Disconnect no BLUE SEA ir automātisks zemā sprieguma atvienotājs. Tas aizsargā baterijas no dziļas izlādes, automātiski atvienojot nebūtiskās slodzes, kad baterijas spriegums noslīd zem iepriekš noteikta sliekšņa. Šī funkcija nodrošina nepieciešamo energiju motora iedarbināšanai un pagarina baterijas kalpošanas laiku.

Tehniskie parametri un galvenās iespējas

m-LVD darbojas ar nominālo spriegumu 12V līdzstrāvā, ar 65A nepārtrauktu un 115A 5 minūšu laikā. Atvienošanas spriegums ir pielāgojams no 11.3V līdz 12.1V, ar rūpnīcas iestatījumu 12.1V. Sistēma iekļauj 5 minūšu aizkavējumu pirms trauksmes (ja iespējams) aktivizēšanas, kad spriegums noslīd zem sliekšņa, sekojot vēl 5 minūšu aizkavējumam pirms faktiskās atvienošanas — kopā 10 minūtes. Pieslēgšana notiek automātiski, kad spriegums ir lielāks par 13.0V 2 minūšu vai 13.5V 30 sekundžu laikā. Strāvas patēriņš ir 95mA pieslēgtā stāvoklī un 4mA atvienotā stāvoklī.

Šis atvienotājs tiek piegādāts ar attālinātā kontroles slēdzi PN 7928, kas ļauj pielāgot atvienošanas spriegumu, aktivizēt "Override" režīmu, kas aizkavē atslēgšanu par 10 minūtēm, vai manuāli atslēgt shēmas ar "OFF" funkciju. Slēdzis arī ļauj atspējot opcionālo skaņu trauksmi. m-LVD ir sertificēts IP67, kas nodrošina pagaidu iegremdēšanu, un atbilst aizsardzības prasībām pret ārēju uzliesmojumu saskaņā ar ISO 8846 un SAE J1171. Tas atbalsta kabeļus līdz 1/0 AWG (50mm²) ar 1/4"-20 (M6) spailēm, kurām nepieciešams 60 in-lb (6.78 Nm) moments. Ierīces svars nav norādīts dokumentācijā vai tīmekļa avotos.

Integrācija un pozicionēšana

Kamēr BLUE SEA manuālie bateriju atslēdzēji vai slodzes sadalītāji (ACR) pārvalda attiecīgi izolāciju vai slodzes sadali, m-LVD pozicionējas kā bateriju proaktīvas aizsardzības elements. Tas atšķiras no vienkārša bateriju atslēdzēja ar savu automātisko darbību un spēju pārvaldīt tikai nebūtiskās slodzes. Salīdzinot ar sarežģītākām risinājumiem, kas ietver daudzfunkcionālas bateriju pārvaldības sistēmas, m-LVD piedāvā mērķtiecīgu un vienkāršotu risinājumu zemā sprieguma atvienošanai, īpaši piemērotu 12V līdzstrāvas instalācijām, kurām nepieciešama droša aizsardzība pret dziļo izlādi bez sarežģītības, kādas prasa pilnvērtīgas pārvaldības sistēmas.

Documentation

Type	Nom
	EN - Instructions - m-LVD Low Voltage Disconnect
	EN - Certificate - m-LVD Low Voltage Disconnect
	EN - Certificate - m-LVD Low Voltage Disconnect

Expert review

Pol CONIN

Digital Manager

« Smart 12V DC battery protection: expert review of the m-LVD disconnect »

The BLUE SEA m-LVD low-voltage disconnect is a critical component for the longevity of 12V DC onboard electrical systems. It is specifically designed for boat owners, recreational vehicles, or standalone installations seeking to protect their service battery bank from deep discharges without constant manual intervention. Its primary function is to maintain sufficient energy reserves for engine starting by automatically shedding secondary loads before the voltage reaches a critical threshold.

Installation is simplified by its multiple mounting options (surface, front panel, or rear panel) and clear documentation. For optimal integration, it is recommended to install it on non-critical charging circuits downstream of the main battery switch. Wiring must comply with recommendations for 6 AWG (16mm²) for nominal currents, although the device physically accepts up to 1/0 AWG (50mm²). Adding an optional audible alarm provides an early warning before the actual disconnection.

This m-LVD stands out from traditional battery switches due to its intelligence and automation. Unlike a simple switch, it actively monitors voltage and acts preventively. Its ability to adjust the disconnect voltage (between 11.3V and 12.1V) and the "Override" function via the remote switch offers valuable flexibility to adapt to different battery types and immediate user needs. It is a standalone and effective solution that does not require integration into a complex NMEA 2000 network, making it particularly relevant for simpler electrical systems or as a complement to existing installations. Its robust design, IP67 certified and compliant with ignition protection standards, ensures reliability in marine environments.

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Atvienotājs zemā sprieguma m-LVD

127,73€

127,73€ ~~138,72€~~

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Frequently asked questions

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What is BLUE SEA's m-LVD Low Voltage Disconnect?

BLUE SEA's m-LVD (Low Voltage Disconnect) is an automatic low-voltage disconnect device designed for 12V DC systems. Its primary function is to protect batteries from deep discharge by automatically cutting non-essential loads when the battery voltage drops below a predefined threshold. This preserves the energy required for engine starting or extends battery lifespan.

What are the main functions of the m-LVD Low Voltage Disconnect?

The main functions of the m-LVD include:

Battery protection against deep discharge.Automatic disconnection of non-essential loads in case of low voltage.Automatic reconnection of circuits when battery voltage is restored.A visual indicator for low-voltage status.An alarm output for optional sound warning.Remote control for adjusting disconnect voltage, an "Override" mode, and a manual "OFF" function.

What is the nominal operating voltage of the m-LVD?

The m-LVD Low Voltage Disconnect is designed to operate with a nominal voltage of 12V DC.

What is the DC current capacity of the m-LVD?

The m-LVD can handle a DC current of 65 amperes (A).

What is the intermittent current capacity of the m-LVD?

The m-LVD has an intermittent current capacity of 115 amperes (A) for a maximum duration of 5 minutes.

Is the m-LVD waterproof or resistant to marine environments?

Yes, the m-LVD is IP67 certified, meaning it is protected against temporary immersion. It also meets the external ignition protection requirements of ISO 8846 and SAE J1171, making it suitable for marine environments.

What are the safety certifications of the m-LVD?

The m-LVD complies with external ignition protection requirements per ISO 8846 and SAE J1171 standards. It is also CE certified under Directive 2013/53/EU for recreational craft and powered watercraft.

What is the current consumption of the m-LVD?

The m-LVD consumes 95 mA in connected state (normal operation) and only 4 mA in open state (disconnected).

Does the m-LVD have a visual indicator for voltage status?

Yes, the m-LVD features a status light that provides a visual warning of low voltage before disconnection. This indicator is present on both the m-LVD unit and the remote control switch.

Can the m-LVD trigger an audible alarm in case of low voltage?

Yes, the m-LVD has an alarm output that can be connected to an optional audible alarm. This alarm triggers 5 minutes after the voltage drops below the disconnect threshold, providing an audible warning before the circuits are effectively cut off.

How to adjust the disconnect voltage of the m-LVD?

To adjust the disconnect voltage, hold the OVERRIDE position of the remote control switch for 10 seconds. The LED will start flashing to indicate the current setting. Use the OFF position to decrease the voltage in 0.2V increments (down to 11.3V) and the OVERRIDE position to increase it (up to 12.1V). The factory setting is 12.1V. Release the switch and wait about 20 seconds for the new setting to be saved.

What are the safety prerequisites before installing the m-LVD?

Before starting any electrical installation, it is imperative to disconnect all AC and DC power sources. If you are not familiar with electrical systems, it is recommended to consult a qualified professional. Never service equipment that has been automatically disconnected by the m-LVD without first permanently removing power by another means than the m-LVD itself.

How to choose the mounting location for the m-LVD and its remote control switch?

The m-LVD can be mounted in three ways: on the rear panel, on the front panel, or surface-mounted. The remote control switch is typically mounted on a panel. Drilling dimensions are provided for the remote control switch installation.

What cable size is recommended to connect the m-LVD?

To meet the current rating of the m-LVD, the minimum recommended cable size is 6 AWG (16mm²). However, larger cable sizes may be required to minimize voltage drop over long distances. It is recommended to consult a certified ABYC electrician for proper cable sizing and fuse selection.

What are the dimensions of the m-LVD connection terminals?

The m-LVD connection terminals are 1/4"-20 (M6) studs.

Is the m-LVD supplied with a remote control switch?

Yes, the m-LVD is supplied with the remote control switch PN 7928. This switch allows you to adjust the disconnect voltage, activate the "Override" mode, or manually cut circuits using the "OFF" function.

Should fuses be used with the m-LVD? And if so, what size?

Yes, using fuses is essential for circuit protection. The fuse size depends on the maximum current of the protected circuit:

For ≤30A: 40A-50A fuse with #10 AWG (6mm²) cableFor ≤50A: 60A-65A fuse with #8 AWG (10mm²) cableFor ≤65A: 90A-100A fuse with #6 AWG (16mm²) cableIt is recommended to consult a certified ABYC electrician for correct fuse placement and sizing.

Is the m-LVD compatible with systems other than 12V DC?

No, the m-LVD is specifically designed for electrical systems with a nominal voltage of 12V DC. It is not compatible with systems of different voltage (e.g., 24V DC or AC).