m-LVD Low Voltage Disconnect - Dimensioned Drawing

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Blue Sea Systems

7635-BSS

Atjungimo įtaisas žemai įtampai 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€~~

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Sandėlyje

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

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

through our network of certified installers

Find an installer

Support service

Choose additional assistance for installation

Technical specifications

Nominalioji įtampa	12
Gnybto dydis	M6 (1/4"-20)
IP klasifikacija	IP67
AFD apsauga	Non
Alarm Time Before Disconnect	5
Nuolatinė srovė (A)	65.0
Valdymo tipas	Commutateur à distance
Matmenys (P x A x G)	70 x 70 x 50
Disconnect Voltage Range	11.3V - 12.1V
Factory Default Disconnect Voltage	12.1
Trumpalaikė srovė (A)	115 (5 min)
Galimas užraktas	Non
Montavimo tipas	Surface, panneau avant ou panneau arrière
Polių skaičius	1
Operating Current Connected Ma	95
Operating Current Open Ma	4
Veikimo įtampos diapazonas	11.3V - 13.5V DC (nominal 12V DC)
Panelio išpjovos skersmuo	58.7
Pozicijos	Réglage de la tension de déconnexion, Override, Arrêt
Produkto paskirtis	Déconnecte automatiquement les charges non essentielles pour préserver la batterie et assurer le démarrage du moteur.
Reconnect Voltage	13
Remote Control Switch Included	Oui
Perjungiklio tipas	Déconnecteur de basse tension automatique
Gnybto tipas	Goujon fileté
Time Delay To Alarm	5
Total Disconnect Delay	10
Kabelių jungties tipas	À goujons

Detailed description

Skirtas protingam 12V nuolatinės srovės maitinimo sistemų valdymui, m-LVD Low Voltage Disconnect įrenginys iš BLUE SEA yra automatinis žemos įtampos atjungimo įtaisas. Jis apsaugo baterijas nuo gilaus iškrovimo, automatiškai atjungdamas nebūtinas apkrovas, kai baterijos įtampa nukrenta žemiau nustatyto slenksčio. Ši funkcija leidžia išsaugoti energiją variklio paleidimui arba prailginti baterijos eksploatacijos trukmę.

Techninės specifikacijos ir pagrindinės funkcijos

m-LVD veikia su 12V nuolatinės srovės įtampa, turi 65A ištisinį ir 115A trumpo trukmės (5 minučių) srovės pajėgumą. Atjungimo įtampa reguliuojama nuo 11.3V iki 12.1V, gamykloje nustatyta įtampa – 12.1V. Įrenginys turi 5 minučių delstį prieš įjungiant (jei naudojama) signalizaciją, kai įtampa nukrenta žemiau slenksčio, o po to – papildomą 5 minučių delstį prieš atjungimą, tai yra iš viso 10 minučių. Vėljungimas įvyksta automatiškai, kai įtampa viršija 13.0V 2 minutes arba 13.5V 30 sekundžių. Veikimo srovė – 95mA jungtoje būsenoje ir 4mA atjungtoje būsenoje.

Šis atjungimo įtaisas tiekiamas su nuotolinio valdymo jungikliu PN 7928, kuris leidžia reguliuoti atjungimo įtampą, įjungti „Override“ režimą, kuris atideda atjungimą 10 minučių, arba rankiniu būdu atjungti grandines naudojant „OFF“ funkciją. Jungiklis taip pat leidžia išjungti (arba įjungti) garso signalizaciją. m-LVD atitinka IP67 apsaugos standartą, leidžiantį trumpalaikį panardinimą, ir atitinka ISO 8846 bei SAE J1171 standartus, skirtus išoriniam uždegimo apsaugai. Jis palaiko laidus iki 1/0 AWG (50mm²) su 1/4"-20 (M6) gnybtų varžtais, reikalaujančiais 60 in-lb (6.78 Nm) momento. Įrenginio svoris nenurodytas pateiktoje dokumentacijoje ar interneto šaltiniuose.

Įdiegimas ir pozicionavimas

Nors rankinio atjungimo įtaisai (BLUE SEA) arba krūvio paskirstymo įrenginiai (ACR) valdo atitinkamai izoliaciją arba krūvio paskirstymą, m-LVD pozicionuojamas kaip baterijų proaktyvios apsaugos elementas. Jis skiriasi nuo paprasto atjungimo įtaiso savo automatizacija ir gebėjimu valdyti tik nebūtinas apkrovas. Palyginti su sudėtingesnėmis baterijų valdymo sistemomis, m-LVD siūlo specializuotą ir supaprastintą žemos įtampos atjungimo sprendimą, ypač tinkamą 12V nuolatinės srovės sistemoms, kurioms reikalinga patikima apsauga nuo gilaus iškrovimo be sudėtingų sistemų kompleksiškumo.

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

Skaitmeninės veiklos vadovas

« Smart 12V DC battery protection: expert review of the BLUE SEA 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 or rear panel) and clear documentation. For optimal integration, it is recommended to place it on non-critical charging circuits downstream of the main battery switch. Wiring must comply with recommendations for 6 AWG (16mm²) for nominal currents, though the device physically accepts up to 1/0 AWG (50mm²). Adding an optional alarm provides an early warning before actual disconnection.

This m-LVD stands out from traditional battery switches by its intelligence and automation. Unlike a simple switch, it actively monitors voltage and acts preventively. Its ability to adjust the disconnection 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 supplement to existing installations. Its robust design, IP67 certified and compliant with ignition protection standards, ensures reliability in marine environments.

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Atjungimo įtaisas žemai įtampai m-LVD

127,73€

127,73€ ~~138,72€~~

Frequently asked questions

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What is the BLUE SEA m-LVD Low Voltage Disconnect?

The BLUE SEA 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 preset threshold. This preserves the energy required for engine starting or extends battery life.

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

The main functions of the m-LVD include:

Protection of batteries 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 of low-voltage status.An alarm output for optional audible warning.Remote control for adjusting disconnection 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 at 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 water-resistant or suitable for 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 on 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 on the m-LVD?

To adjust the disconnect voltage, hold the OVERRIDE position on 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 approximately 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 switch installation.

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

To meet the m-LVD’s current capacity, 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 advised 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).